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Dr. Md. Sohrab Hossain
Senior lecturer

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0 Waste to Energy
0 Wastewater Treatment
0 Renewable and Sustainable Energy
0 solid waste management
0 Supercritcial CO2 technology

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Wastewater Treatment

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Review
Published: 06 August 2021 in International Journal of Environmental Research and Public Health
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Work-related musculoskeletal disorders (WMSDs) are among the most common disorders in any work sector and industry. Ergonomic risk assessment can reduce the risk of WMSDs. Motion capture that can provide accurate and real-time quantitative data has been widely used as a tool for ergonomic risk assessment. However, most ergonomic risk assessments that use motion capture still depend on the traditional ergonomic risk assessment method, focusing on qualitative data. Therefore, this article aims to provide a view on the ergonomic risk assessment and apply current motion capture technology to understand classical mechanics of physics that include velocity, acceleration, force, and momentum in ergonomic risk assessment. This review suggests that using motion capture technologies with kinetic and kinematic variables, such as velocity, acceleration, and force, can help avoid inconsistency and develop more reliable results in ergonomic risk assessment. Most studies related to the physical measurement conducted with motion capture prefer to use non-optical motion capture because it is a low-cost system and simple experimental setup. However, the present review reveals that optical motion capture can provide more accurate data.

ACS Style

Muhamad Nurul Hisyam Yunus; Mohd Hafiidz Jaafar; Ahmad Sufril Azlan Mohamed; Nur Zaidi Azraai; Sohrab Hossain. Implementation of Kinetic and Kinematic Variables in Ergonomic Risk Assessment Using Motion Capture Simulation: A Review. International Journal of Environmental Research and Public Health 2021, 18, 8342 .

AMA Style

Muhamad Nurul Hisyam Yunus, Mohd Hafiidz Jaafar, Ahmad Sufril Azlan Mohamed, Nur Zaidi Azraai, Sohrab Hossain. Implementation of Kinetic and Kinematic Variables in Ergonomic Risk Assessment Using Motion Capture Simulation: A Review. International Journal of Environmental Research and Public Health. 2021; 18 (16):8342.

Chicago/Turabian Style

Muhamad Nurul Hisyam Yunus; Mohd Hafiidz Jaafar; Ahmad Sufril Azlan Mohamed; Nur Zaidi Azraai; Sohrab Hossain. 2021. "Implementation of Kinetic and Kinematic Variables in Ergonomic Risk Assessment Using Motion Capture Simulation: A Review." International Journal of Environmental Research and Public Health 18, no. 16: 8342.

Review article
Published: 07 June 2021 in International Journal of Green Energy
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The demand for renewable energy has risen rapidly due to the depletion of petroleum oil. Biodiesel has attracted potential interest to be utilized as an alternative to petroleum oil since it is produced from renewable resources with minimal environmental impact. However, the production and quality of biodiesel potentially influence several factors including physicochemical properties of lipids, selection of feedstock, and technology utilized for lipids extraction. Candlenut contains the highest amount of oil among the oilseed crops. Supercritical carbon dioxide (scCO2) is viewed as an effective alternative method over conventional solvent extraction methods for the extraction and separation of lipids from various plant matrices. The distinct properties of the fluid CO2, such as nonflammability, nontoxicity, environmental friendliness, and its ability to solubilize lipophilic substance led to the wide application of the scCO2 in various industrial applications. Hence, the present study attempts to review the influence of the supercritical carbon dioxide (scCO2) technology for the extraction of lipids from candlenut as a potential feedstock for biodiesel production. The limitations of existing technologies in candlenut oil extraction and the potential scCO2 technology for the extraction of lipids from candlenut were also reviewed.

ACS Style

Ahmad Noor Syimir Fizal; Sohrab Hossain; Muzafar Zulkifli; Nor Afifah Khalil; Hamidah Abd Hamid; Ahmad Naim Ahmad Yahaya. Implementation of the supercritical CO2 technology for the extraction of candlenut oil as a promising feedstock for biodiesel production: potential and limitations. International Journal of Green Energy 2021, 1 -12.

AMA Style

Ahmad Noor Syimir Fizal, Sohrab Hossain, Muzafar Zulkifli, Nor Afifah Khalil, Hamidah Abd Hamid, Ahmad Naim Ahmad Yahaya. Implementation of the supercritical CO2 technology for the extraction of candlenut oil as a promising feedstock for biodiesel production: potential and limitations. International Journal of Green Energy. 2021; ():1-12.

Chicago/Turabian Style

Ahmad Noor Syimir Fizal; Sohrab Hossain; Muzafar Zulkifli; Nor Afifah Khalil; Hamidah Abd Hamid; Ahmad Naim Ahmad Yahaya. 2021. "Implementation of the supercritical CO2 technology for the extraction of candlenut oil as a promising feedstock for biodiesel production: potential and limitations." International Journal of Green Energy , no. : 1-12.

Journal article
Published: 25 May 2021 in Journal of Composites Science
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The present study was conducted to develop a nanocomposite film of carboxymethyl cellulose (CMC) reinforced with cellulose nanocrystals isolated from microcrystalline cellulose (CNCMCC) in the presence of bismuth ferrite (BFO)/poly-o-phenylenediamine (PoPD). The physicochemical properties, the mechanical and thermal stability, and its photocatalytic activity towards the removal of methyl orange (MO) were determined. Results show that the integration of CNCMCC into the CMC matrix enhanced the mechanical strength of the film. The tensile strength (TS) of the nanocomposite film increased from 0.205 to 0.244 MPa, while elongation at break (EB) decreased from 201.44 to 168.78% in the presence of 20 wt.% of CNCMCC. The incorporation of CNCMCC in the CMC matrix substantially enhanced the nanocomposite’s thermal stability from 181.16 to 185.59 °C and decreased the degradation residue from 72.64 to 63.16%. The determination of the photocatalytic activity of the CMC/CNCMCC/BFO/PoPD composite film revealed the removal of methyl orange (MO) of 93.64% with high structural integrity after 3 h of treatment. Thus, the isolated CNCMCC-reinforced CMC/BFO/PoPD composite film can be used as a photocatalyst for the removal of organic pollutants from wastewater, including the methyl orange.

ACS Style

Nurul Nazri; Yogesh Kumar; Mohd Ramlan; Mohammad Mohammad Kassim; Sohrab Hossain; Noor Mohd Kaus. Physico-Mechanical Study of CMC/BFO/PoPD Nanocomposite Films Reinforced with Cellulose Nanocrystals (CNCMCC) for Effective Photocatalytic Removal of Methyl Orange. Journal of Composites Science 2021, 5, 142 .

AMA Style

Nurul Nazri, Yogesh Kumar, Mohd Ramlan, Mohammad Mohammad Kassim, Sohrab Hossain, Noor Mohd Kaus. Physico-Mechanical Study of CMC/BFO/PoPD Nanocomposite Films Reinforced with Cellulose Nanocrystals (CNCMCC) for Effective Photocatalytic Removal of Methyl Orange. Journal of Composites Science. 2021; 5 (6):142.

Chicago/Turabian Style

Nurul Nazri; Yogesh Kumar; Mohd Ramlan; Mohammad Mohammad Kassim; Sohrab Hossain; Noor Mohd Kaus. 2021. "Physico-Mechanical Study of CMC/BFO/PoPD Nanocomposite Films Reinforced with Cellulose Nanocrystals (CNCMCC) for Effective Photocatalytic Removal of Methyl Orange." Journal of Composites Science 5, no. 6: 142.

Journal article
Published: 26 February 2021 in Journal of Water Process Engineering
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The effective removal of organic and inorganic pollutants from landfill leachate is challenging because of their high concentration. In this study, stabilized landfill leachate was treated with the organic and inorganic pollutants, such as color, turbidity, ammonium nitrogen (NH3–N), total dissolved solid (TDS), and chemical oxygen demand (COD) with a combination of Fe2O3 nanoparticles as adsorbents and electroflotation technology. Pollutant removal was achieved with Fe2O3 nanoparticles and electroflotation separately to determine the optimal experimental conditions for adsorption using Fe2O3 nanoparticles (pH, doses, and contact time) and electroflotation (pH, contact time, and current density). Finally, the optimal experimental conditions for both treatment processes were employed to remove COD, color, NH3–N, turbidity, and TDS from the landfill leachate. The combination of adsorption with Fe2O3 nanoparticles and electroflotation technology was effective in removing over 96 % of COD, 99 % of NH3–N, approximately 100 % of color, 99 % of turbidity, and 99 % of TDS from landfill leachate. The residual COD, NH3–N, color, turbidity, and TDS were determined to be approximately 89 mg/L, 4.5 mg/L, 12 ADMI, 5 NTU, and 61 mg/L, respectively, which complies with the standard regulation of leachate discharge limits set by the Department of Environment (DoE), Malaysia in 2009. The finding of this study demonstrates an effective treatment method to remove the organic and inorganic pollutants from stabilized landfill leachate.

ACS Style

Abdubaki Mohamed Hussen Shadi; Mohammad Anuar Kamaruddin; Noorzalila Muhammad Niza; Madu Ijanu Emmanuel; Norli Ismail; Sohrab Hossain. Effective removal of organic and inorganic pollutants from stabilized sanitary landfill leachate using a combined Fe2O3 nanoparticles/electroflotation process. Journal of Water Process Engineering 2021, 40, 101988 .

AMA Style

Abdubaki Mohamed Hussen Shadi, Mohammad Anuar Kamaruddin, Noorzalila Muhammad Niza, Madu Ijanu Emmanuel, Norli Ismail, Sohrab Hossain. Effective removal of organic and inorganic pollutants from stabilized sanitary landfill leachate using a combined Fe2O3 nanoparticles/electroflotation process. Journal of Water Process Engineering. 2021; 40 ():101988.

Chicago/Turabian Style

Abdubaki Mohamed Hussen Shadi; Mohammad Anuar Kamaruddin; Noorzalila Muhammad Niza; Madu Ijanu Emmanuel; Norli Ismail; Sohrab Hossain. 2021. "Effective removal of organic and inorganic pollutants from stabilized sanitary landfill leachate using a combined Fe2O3 nanoparticles/electroflotation process." Journal of Water Process Engineering 40, no. : 101988.

Journal article
Published: 19 February 2021 in Polymers
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There is an interest in the sustainable utilization of waste cotton cloths because of their enormous volume of generation and high cellulose content. Waste cotton cloths generated are disposed of in a landfill, which causes environmental pollution and leads to the waste of useful resources. In the present study, cellulose nanocrystals (CNCs) were isolated from waste cotton cloths collected from a landfill. The waste cotton cloths collected from the landfill were sterilized and cleaned using supercritical CO2 (scCO2) technology. The cellulose was extracted from scCO2-treated waste cotton cloths using alkaline pulping and bleaching processes. Subsequently, the CNCs were isolated using the H2SO4 hydrolysis of cellulose. The isolated CNCs were analyzed to determine the morphological, chemical, thermal, and physical properties with various analytical methods, including attenuated total reflection-Fourier transform-infrared spectroscopy (ATR-FTIR), field-emission scanning electron microscopy (FE-SEM), energy-filtered transmission electron microscopy (EF-TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The results showed that the isolated CNCs had a needle-like structure with a length and diameter of 10–30 and 2–6 nm, respectively, and an aspect ratio of 5–15, respectively. Additionally, the isolated CNCs had a high crystallinity index with a good thermal stability. The findings of the present study revealed the potential of recycling waste cotton cloths to produce a value-added product.

ACS Style

Siti Mohamed; Sohrab Hossain; Mohamad Mohamad Kassim; Mardiana Ahmad; Fatehah Omar; Venugopal Balakrishnan; Muzafar Zulkifli; Ahmad Yahaya. Recycling Waste Cotton Cloths for the Isolation of Cellulose Nanocrystals: A Sustainable Approach. Polymers 2021, 13, 626 .

AMA Style

Siti Mohamed, Sohrab Hossain, Mohamad Mohamad Kassim, Mardiana Ahmad, Fatehah Omar, Venugopal Balakrishnan, Muzafar Zulkifli, Ahmad Yahaya. Recycling Waste Cotton Cloths for the Isolation of Cellulose Nanocrystals: A Sustainable Approach. Polymers. 2021; 13 (4):626.

Chicago/Turabian Style

Siti Mohamed; Sohrab Hossain; Mohamad Mohamad Kassim; Mardiana Ahmad; Fatehah Omar; Venugopal Balakrishnan; Muzafar Zulkifli; Ahmad Yahaya. 2021. "Recycling Waste Cotton Cloths for the Isolation of Cellulose Nanocrystals: A Sustainable Approach." Polymers 13, no. 4: 626.

Review
Published: 25 January 2021 in International Journal of Energy Research
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The rapid depletion of diesel fuel, increasing energy demand, and environmental pollution concerns are increasing worldwide interest in the production of liquid biofuels. Biofuel (bio‐aviation and biodiesel) is a potential and plausible alternative to diesel fuel to substantially mitigate the environmental impact of future energy demand. Non‐edible crop oil is viewed as a potential feedstock for liquid biofuel production owing to the massive demand for edible oil as a food source. However, the major limitation of utilizing non‐edible crop oil for biodiesel production is the cost due to the high price of feedstocks and the limited supply of large‐scale biodiesel production. Candlenut trees can grow in harsh and arid climates due to low moisture requirements. Therefore, candlenut can be cultivated in the most unused lands, particularly in developing countries along coasts and riverbanks and in deserts and other wastelands unsuitable for edible crops. Additionally, candlenut seed contains a high amount of oil (30%‐60%). Thus, candlenut oil is a promising source for commercial biodiesel production. The present study was conducted to review the possibilities and challenges of utilizing candlenut as a potential feedstock for biodiesel production. Additionally, several important aspects related to candlenut oil processing, such as extraction technology, physicochemical properties, biodiesel production technologies, and advantages and limitations of candlenut biodiesel production are discussed.

ACS Style

Marwan Abdulhakim Shaah; Faisal Allafi; Sohrab Hossain; Alyaa Alsaedi; Norli Ismail; Mohd Omar Ab Kadir; Mardiana Idayu Ahmad. Candlenut oil: review on oil properties and future liquid biofuel prospects. International Journal of Energy Research 2021, 1 .

AMA Style

Marwan Abdulhakim Shaah, Faisal Allafi, Sohrab Hossain, Alyaa Alsaedi, Norli Ismail, Mohd Omar Ab Kadir, Mardiana Idayu Ahmad. Candlenut oil: review on oil properties and future liquid biofuel prospects. International Journal of Energy Research. 2021; ():1.

Chicago/Turabian Style

Marwan Abdulhakim Shaah; Faisal Allafi; Sohrab Hossain; Alyaa Alsaedi; Norli Ismail; Mohd Omar Ab Kadir; Mardiana Idayu Ahmad. 2021. "Candlenut oil: review on oil properties and future liquid biofuel prospects." International Journal of Energy Research , no. : 1.

Journal article
Published: 30 December 2020 in Polymers
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In the present study, magnetic oil palm empty fruits bunch cellulose nanofiber (M-OPEFB-CNF) composite was isolated by sol-gel method using cellulose nanofiber (CNF) obtained from oil palm empty fruits bunch (OPEFB) and Fe3O4 as magnetite. Several analytical methods were utilized to characterize the mechanical, chemical, thermal, and morphological properties of the isolated CNF and M-OPEFB-CNF. Subsequently, the isolated M-OPEFB-CNF composite was utilized for the adsorption of Cr(VI) and Cu(II) from aqueous solution with varying parameters, such as pH, adsorbent doses, treatment time, and temperature. Results showed that the M-OPEFB-CNF as an effective bio-sorbent for the removal of Cu(II) and Cr(VI) from aqueous solution. The adsorption isotherm modeling revealed that the Freundlich equation better describes the adsorption of Cu(II) and Cr(VI) on M-OPEFB-CNF composite. The kinetics studies revealed the pseudo-second-order kinetics model was a better-described kinetics model for the removal of Cu(II) and Cr(VI) using M-OPEFB-CNF composite as bio-sorbent. The findings of the present study showed that the M-OPEFB-CNF composite has the potential to be utilized as a bio-sorbent for heavy metals removal.

ACS Style

Aina Mardhia Khalid; Sohrab Hossain; Norli Ismail; Nor Afifah Khalil; Venugopal Balakrishnan; Muzafar Zulkifli; Ahmad Naim Ahmad Yahaya. Isolation and Characterization of Magnetic Oil Palm Empty Fruits Bunch Cellulose Nanofiber Composite as a Bio-Sorbent for Cu(II) and Cr(VI) Removal. Polymers 2020, 13, 112 .

AMA Style

Aina Mardhia Khalid, Sohrab Hossain, Norli Ismail, Nor Afifah Khalil, Venugopal Balakrishnan, Muzafar Zulkifli, Ahmad Naim Ahmad Yahaya. Isolation and Characterization of Magnetic Oil Palm Empty Fruits Bunch Cellulose Nanofiber Composite as a Bio-Sorbent for Cu(II) and Cr(VI) Removal. Polymers. 2020; 13 (1):112.

Chicago/Turabian Style

Aina Mardhia Khalid; Sohrab Hossain; Norli Ismail; Nor Afifah Khalil; Venugopal Balakrishnan; Muzafar Zulkifli; Ahmad Naim Ahmad Yahaya. 2020. "Isolation and Characterization of Magnetic Oil Palm Empty Fruits Bunch Cellulose Nanofiber Composite as a Bio-Sorbent for Cu(II) and Cr(VI) Removal." Polymers 13, no. 1: 112.

Review article
Published: 26 October 2020 in Journal of Cleaner Production
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Raw sheep wool contains various impurities such as wax, suint, dirt, and microorganisms. Water-based cleaning process of sheep wool requires toxic volatile organic compounds that generate a significant portion of toxic effluents. Supercritical CO2 (scCO2) is a waterless technology that has been utilized for sterilization, extraction, cleaning, and drying in various manufacturing sectors. The application of the scCO2 technology in sheep wool processing is cleaner, as it avoids the generation of toxic effluents. scCO2 is a promising technology that can be simultaneously utilized in sheep wool processing for sterilization, extraction of lanolin, and cleaning and drying. Therefore, the present study was conducted to evaluate the potential and limitations of the use of the scCO2 technology for sheep wool processing. Moreover, the properties of sheep wool, the impurities associated with sheep wool fiber, and treatment technology are discussed.

ACS Style

Faisal Aboelksim Salem Allafi; Sohrab Hossain; Mohd Omar Ab Kadir; Marwan Abdul Hakim Shaah; Japareng Lalung; Mardiana Idayu Ahmad. Waterless processing of sheep wool fiber in textile industry with supercritical CO2: Potential and challenges. Journal of Cleaner Production 2020, 285, 124819 .

AMA Style

Faisal Aboelksim Salem Allafi, Sohrab Hossain, Mohd Omar Ab Kadir, Marwan Abdul Hakim Shaah, Japareng Lalung, Mardiana Idayu Ahmad. Waterless processing of sheep wool fiber in textile industry with supercritical CO2: Potential and challenges. Journal of Cleaner Production. 2020; 285 ():124819.

Chicago/Turabian Style

Faisal Aboelksim Salem Allafi; Sohrab Hossain; Mohd Omar Ab Kadir; Marwan Abdul Hakim Shaah; Japareng Lalung; Mardiana Idayu Ahmad. 2020. "Waterless processing of sheep wool fiber in textile industry with supercritical CO2: Potential and challenges." Journal of Cleaner Production 285, no. : 124819.

Journal article
Published: 14 October 2020 in Polymers
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The refining of the crude palm oil (CPO) generates the palm oil refinery effluent (PORE). The presence of high contents of biochemical oxygen demand (BOD), chemical oxygen demand (COD), turbidity, and suspended solids (SS) in PORE encourages the determination of an effective treatment process to minimize the environmental pollution and preserve aquatic life. In the present study, a biodegradable natural polymer, namely tannin, was utilized as a coagulant to treat PORE. The coagulation experiment was conducted using a jar test apparatus. The tannin coagulation efficiency was evaluated based on the BOD, COD, turbidity, and SS removal from PORE by varying the tannin dose (50–300 mg/L), pH (pH 4–10), treatment time (15–90 min), and sedimentation time (15–90 min). It was found that the maximum removal of BOD, COD, turbidity, and SS was 97.62%, 88.89%, 93.01%, and 90.21%, respectively, at pH 6, a tannin dose of 200 mg/L, 60 min of coagulation time, and 60 min of sedimentation time. Analyses of isotherm models revealed that the Freundlich isotherm model was well fitted with the coagulation study. Kinetics studies show that the pseudo-second-order kinetics model was the well-fitted kinetics model for the BOD, COD, turbidity, and SS removal from PORE using tannin as a polymeric coagulant. The determination of thermodynamics parameters analyses revealed that BOD, COD, turbidity, and SS removal from PORE was spontaneous, exothermic, and chemical in nature. The finding of the present study shows that tannin as a natural polymeric coagulant would be utilized in PORE treatment to avoid toxic sludge generation.

ACS Style

Nik Mohd Farid Mat Yasin; Sohrab Hossain; Abdul Khalil H.P.S.; Muzafar Zulkifli; Adel Al-Gheethi; Ahmad Jaril Asis; Ahmad Naim Ahmad Yahaya. Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses. Polymers 2020, 12, 2353 .

AMA Style

Nik Mohd Farid Mat Yasin, Sohrab Hossain, Abdul Khalil H.P.S., Muzafar Zulkifli, Adel Al-Gheethi, Ahmad Jaril Asis, Ahmad Naim Ahmad Yahaya. Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses. Polymers. 2020; 12 (10):2353.

Chicago/Turabian Style

Nik Mohd Farid Mat Yasin; Sohrab Hossain; Abdul Khalil H.P.S.; Muzafar Zulkifli; Adel Al-Gheethi; Ahmad Jaril Asis; Ahmad Naim Ahmad Yahaya. 2020. "Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses." Polymers 12, no. 10: 2353.

Journal article
Published: 15 September 2020 in Journal of Water Process Engineering
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Natural Fe₂O₃ nanoparticles was successfully investigated in the treatment of raw landfill leachate. Pre-characterisation of raw landfill leachate was done to identify the concentration of certain pollutants; which the effluent concentration of COD, NH₃-N, and color were 2081 mg/L, 449 mg/L and 2851 Pt-Co, respectively. Following mechanical milling to reach the nanoparticle size, the exploration of structural characteristic of Fe₂O₃ nanoparticles was done. X-ray powder diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM), Transmission electron microscopy (TEM), and Energy Dispersive X-Ray (EDX) were used to distinguish the structure and morphology of the nanoadsorbents. The results revealed that the particle size were varied between 21 nm–70 nm. FT-IR confirms the phase purity of the natural nanoparticles. The adsorption of COD, NH₃-N, and color from landfill leachate onto the novel of natural Fe₂O₃ was studied with variable parameters such as contact time, pH of the leachate, dose, and temperature by applying the method of batch adsorption. It was found that the adsorption treatment was sharply high at the first stage and reached a stable state condition with 97 %, 43.8 %, and 75.9 % removal of color, NH₃-N and COD, respectively. In addition, the adsorption capacity was about 78.8 %, 31 %, and 59.3 % for color, NH₃-N, and COD, respectively of the initial saturation adsorption capacity after being used three times. Thus, iron oxide magnetic nanoparticles (Fe₂O₃) was found efficient for treatment of raw landfill leachate and it could be further studied for other types of wastewater and polluted water.

ACS Style

Abdubaki Mohamed Hussen Shadi; Mohammad Anuar Kamaruddin; Noorzalila Muhammad Niza; Madu Ijanu Emmanuel; Sohrab Hossain; Norli Ismail.. Efficient treatment of raw leachate using magnetic ore iron oxide nanoparticles Fe₂O₃ as nanoadsorbents. Journal of Water Process Engineering 2020, 38, 101637 .

AMA Style

Abdubaki Mohamed Hussen Shadi, Mohammad Anuar Kamaruddin, Noorzalila Muhammad Niza, Madu Ijanu Emmanuel, Sohrab Hossain, Norli Ismail.. Efficient treatment of raw leachate using magnetic ore iron oxide nanoparticles Fe₂O₃ as nanoadsorbents. Journal of Water Process Engineering. 2020; 38 ():101637.

Chicago/Turabian Style

Abdubaki Mohamed Hussen Shadi; Mohammad Anuar Kamaruddin; Noorzalila Muhammad Niza; Madu Ijanu Emmanuel; Sohrab Hossain; Norli Ismail.. 2020. "Efficient treatment of raw leachate using magnetic ore iron oxide nanoparticles Fe₂O₃ as nanoadsorbents." Journal of Water Process Engineering 38, no. : 101637.

Review
Published: 09 September 2020 in Sustainability
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The presence of SARS-CoV-2 in sewage and water resources has been used as an indication for the possible occurrence of the virus among communities and for its potential of transmission among humans through the surrounding environment or water resources. In order to reduce the transmission of SARS-CoV-2, contaminated surfaces should be disinfected frequently by using an effective disinfectant. The present review discusses a bibliometric analysis of the global SARS-CoV-2 research and focuses mainly on reviewing the efficiency of the most traditional disinfection technologies. The disinfection methods reviewed include those for hospitals’ or medical facilities’ wastewater, contaminated surfaces, and contaminated masks. The elimination of the virus based on the concept of sterility assurance level (SAL) is also discussed. In addition, the chemical disinfectants that are currently used, as well as their temporary efficiency, are also reviewed. The different technologies that are globally used for disinfection processes during the COVID-19 pandemic are shown. However, more advanced technologies, such as nanotechnology, might have more potential for higher inactivation effectiveness against SARS-CoV-2.

ACS Style

Adel Al-Gheethi; Mohammed Al-Sahari; Marlinda Abdul Malek; Efaq Noman; Qais Al-Maqtari; Radin Mohamed; Balkis Talip; Sadeq Alkhadher; Sohrab Hossain. Disinfection Methods and Survival of SARS-CoV-2 in the Environment and Contaminated Materials: A Bibliometric Analysis. Sustainability 2020, 12, 7378 .

AMA Style

Adel Al-Gheethi, Mohammed Al-Sahari, Marlinda Abdul Malek, Efaq Noman, Qais Al-Maqtari, Radin Mohamed, Balkis Talip, Sadeq Alkhadher, Sohrab Hossain. Disinfection Methods and Survival of SARS-CoV-2 in the Environment and Contaminated Materials: A Bibliometric Analysis. Sustainability. 2020; 12 (18):7378.

Chicago/Turabian Style

Adel Al-Gheethi; Mohammed Al-Sahari; Marlinda Abdul Malek; Efaq Noman; Qais Al-Maqtari; Radin Mohamed; Balkis Talip; Sadeq Alkhadher; Sohrab Hossain. 2020. "Disinfection Methods and Survival of SARS-CoV-2 in the Environment and Contaminated Materials: A Bibliometric Analysis." Sustainability 12, no. 18: 7378.

Review
Published: 06 August 2020 in Polymers
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Cellulose nanomaterials from plant fibre provide various potential applications (i.e., biomedical, automotive, packaging, etc.). The biomedical application of nanocellulose isolated from plant fibre, which is a carbohydrate-based source, is very viable in the 21st century. The essential characteristics of plant fibre-based nanocellulose, which include its molecular, tensile and mechanical properties, as well as its biodegradability potential, have been widely explored for functional materials in the preparation of aerogel. Plant cellulose nano fibre (CNF)-based aerogels are novel functional materials that have attracted remarkable interest. In recent years, CNF aerogel has been extensively used in the biomedical field due to its biocompatibility, renewability and biodegradability. The effective surface area of CNFs influences broad applications in biological and medical studies such as sustainable antibiotic delivery for wound healing, the preparation of scaffolds for tissue cultures, the development of drug delivery systems, biosensing and an antimicrobial film for wound healing. Many researchers have a growing interest in using CNF-based aerogels in the mentioned applications. The application of cellulose-based materials is widely reported in the literature. However, only a few studies discuss the potential of cellulose nanofibre aerogel in detail. The potential applications of CNF aerogel include composites, organic–inorganic hybrids, gels, foams, aerogels/xerogels, coatings and nano-paper, bioactive and wound dressing materials and bioconversion. The potential applications of CNF have rarely been a subject of extensive review. Thus, extensive studies to develop materials with cheaper and better properties, high prospects and effectiveness for many applications are the focus of the present work. The present review focuses on the evolution of aerogels via characterisation studies on the isolation of CNF-based aerogels. The study concludes with a description of the potential and challenges of developing sustainable materials for biomedical applications.

ACS Style

H.P.S. Abdul Khalil; A.S. Adnan; Esam Yahya; N.G. Olaiya; Safrida Safrida; Sohrab Hossain; Venugopal Balakrishnan; Deepu Gopakumar; C.K. Abdullah; A.A. Oyekanmi; Daniel Pasquini. A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications. Polymers 2020, 12, 1759 .

AMA Style

H.P.S. Abdul Khalil, A.S. Adnan, Esam Yahya, N.G. Olaiya, Safrida Safrida, Sohrab Hossain, Venugopal Balakrishnan, Deepu Gopakumar, C.K. Abdullah, A.A. Oyekanmi, Daniel Pasquini. A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications. Polymers. 2020; 12 (8):1759.

Chicago/Turabian Style

H.P.S. Abdul Khalil; A.S. Adnan; Esam Yahya; N.G. Olaiya; Safrida Safrida; Sohrab Hossain; Venugopal Balakrishnan; Deepu Gopakumar; C.K. Abdullah; A.A. Oyekanmi; Daniel Pasquini. 2020. "A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications." Polymers 12, no. 8: 1759.

Data article
Published: 04 August 2020 in Data in Brief
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Data examines the effect of hydroxypropyl methylcellulose (HPMC) HPMC15 cP, and HPMC 5 cP polymer composition on the physicochemical traits of encapsulated oil made using lab scale spray drying (180 °C). The data found showed that the properties of the reconstituted fish oil powder are significantly affected by the polymer's composition and ratio (p < 0.05). In this experiment, powder with the particle sizes below 60 μm was produced and it was observed that HPMC is a good emulsifier for all formulations and the encapsulation efficiency is high with 75.21% for AF1 formulation. It was also observed that the process of fish oil encapsulation employed by HPMC 5 cP produce a more volatile oil powder, while encapsulation with HPMC 15 cP produced a more stable fish oil powder. These finding shows that the utilisation of HPMC as a polymer to encapsulate fish oil can produce a more efficient and stable compound.

ACS Style

I.S.M. Zaidul; T.K. Fahim; F. Sahena; A.K. Azad; M.A. Rashid; M.S. Hossain. Dataset on applying HPMC polymer to improve encapsulation efficiency and stability of the fish oil: In vitro evaluation. Data in Brief 2020, 32, 106111 .

AMA Style

I.S.M. Zaidul, T.K. Fahim, F. Sahena, A.K. Azad, M.A. Rashid, M.S. Hossain. Dataset on applying HPMC polymer to improve encapsulation efficiency and stability of the fish oil: In vitro evaluation. Data in Brief. 2020; 32 ():106111.

Chicago/Turabian Style

I.S.M. Zaidul; T.K. Fahim; F. Sahena; A.K. Azad; M.A. Rashid; M.S. Hossain. 2020. "Dataset on applying HPMC polymer to improve encapsulation efficiency and stability of the fish oil: In vitro evaluation." Data in Brief 32, no. : 106111.

Journal article
Published: 19 June 2020 in Water
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There is increasing concern to determine an alternative coagulant for treating industrial effluent with minimal environmental impact and operational cost. In this study, iron (II) sulphate heptahydrate (FeSO4·7H2O) waste, an industrial byproduct from a titanium oxide processing industry, was used as a coagulant for the removal of ammonia (NH3), chemical oxygen demand (COD), biochemical oxygen demand (BOD), and suspended solid (SS) from secondary rubber processing effluent (SRPE). The highest percentage removal of BOD, COD, SS, and NH3 achieved was approximately 97%, 99%, 98%, and 95%, respectively, at pH 5.0, coagulant dose of 1 g/L, coagulation time of 60 min, sedimentation time of 60 min, and at an elevated temperature of 70 °C. The best described adsorption isotherm model was found to be the Brunauer–Emmett–Teller (BET) model, indicated that the FeSO4·7H2O adsorption took placed on the surface of iron hydroxide precipitates with multilayer formation and random distribution. The kinetics analysis showed that the adsorption mechanism was well fitted with the pseudo-second-order kinetic model. The findings of the present study show that the FeSO4·7H2O waste has the potential to be used as a coagulant for the treatment of industrial effluents, including the secondary rubber processing effluent.

ACS Style

Rahmat Ngteni; Sohrab Hossain; Mohd Omar Ab Kadir; Ahmad Jaril Asis; Zulhafiz Tajudin. Kinetics and Isotherm Modeling for the Treatment of Rubber Processing Effluent Using Iron (II) Sulphate Waste as a Coagulant. Water 2020, 12, 1747 .

AMA Style

Rahmat Ngteni, Sohrab Hossain, Mohd Omar Ab Kadir, Ahmad Jaril Asis, Zulhafiz Tajudin. Kinetics and Isotherm Modeling for the Treatment of Rubber Processing Effluent Using Iron (II) Sulphate Waste as a Coagulant. Water. 2020; 12 (6):1747.

Chicago/Turabian Style

Rahmat Ngteni; Sohrab Hossain; Mohd Omar Ab Kadir; Ahmad Jaril Asis; Zulhafiz Tajudin. 2020. "Kinetics and Isotherm Modeling for the Treatment of Rubber Processing Effluent Using Iron (II) Sulphate Waste as a Coagulant." Water 12, no. 6: 1747.

Journal article
Published: 03 March 2020 in Journal of Oil Palm Research
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Malaysia's Journal of Oil Palm Research Website

ACS Style

Sohrab Hossain. SCALE-UP STUDY ON THE SUPERCRITICAL CARBON DIOXIDE STERILISATION OF OIL PALM FRESH FRUIT BUNCH. Journal of Oil Palm Research 2020, 1 .

AMA Style

Sohrab Hossain. SCALE-UP STUDY ON THE SUPERCRITICAL CARBON DIOXIDE STERILISATION OF OIL PALM FRESH FRUIT BUNCH. Journal of Oil Palm Research. 2020; ():1.

Chicago/Turabian Style

Sohrab Hossain. 2020. "SCALE-UP STUDY ON THE SUPERCRITICAL CARBON DIOXIDE STERILISATION OF OIL PALM FRESH FRUIT BUNCH." Journal of Oil Palm Research , no. : 1.

Journal article
Published: 01 March 2020 in Heliyon
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This study was conducted to determine the influence of the oil palm boiler ash (OPBA) reinforcement on the microstructural, physical, mechanical and thermal properties of epoxy polymer composites. The chemical composition analysis of OPBA revealed that it contains about 55 wt.% of SiO2 along with other metallic oxides and elements. The surface morphology of OPBA showed angular and irregular shapes with porous structures. The influence of OPBA as a reinforcement in epoxy composite was studied with varying filler loadings (10–50 wt.%) and different particle sizes (50–150 μm). The result showed that the incorporation of OPBA in composites has improved the physical, mechanical and thermal properties of the epoxy matrix. The highest physical and mechanical properties of fabricated composites were attained with 30 wt.% loading and size of 50 μm. Also, thermal stability and the percentage of char residue of the composite increased with increasing filler loading. Furthermore, the contact angle of OPBA reinforced epoxy composites increased with the increase of filler loading. The lowest value of the contact angle was obtained at 30 wt.% of filler loading with the OPBA particle size of 50 μm. The finding of this study reveals that the OPBA has the potential to be used as reinforcement or filler as well as an alternative of silica-based inorganic fillers used in the enhancement of mechanical, physical and thermal properties of the epoxy polymer composite.

ACS Style

Samsul Rizal; H.M. Fizree; Sohrab Hossain; Ikramullah; Deepu A. Gopakumar; Eunice Chong Wan Ni; H.P.S. Abdul Khalil. The role of silica-containing agro-industrial waste as reinforcement on physicochemical and thermal properties of polymer composites. Heliyon 2020, 6, e03550 .

AMA Style

Samsul Rizal, H.M. Fizree, Sohrab Hossain, Ikramullah, Deepu A. Gopakumar, Eunice Chong Wan Ni, H.P.S. Abdul Khalil. The role of silica-containing agro-industrial waste as reinforcement on physicochemical and thermal properties of polymer composites. Heliyon. 2020; 6 (3):e03550.

Chicago/Turabian Style

Samsul Rizal; H.M. Fizree; Sohrab Hossain; Ikramullah; Deepu A. Gopakumar; Eunice Chong Wan Ni; H.P.S. Abdul Khalil. 2020. "The role of silica-containing agro-industrial waste as reinforcement on physicochemical and thermal properties of polymer composites." Heliyon 6, no. 3: e03550.

Journal article
Published: 11 October 2019 in Polymers
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This paper presents a comparison on the effects of blending chitin and/or starch with poly(lactic acid) (PLA). Three sets of composites (PLA–chitin, PLA–starch and PLA–chitin–starch) with 92%, 94%, 96% and 98% PLA by weight were prepared. The percentage weight (wt.%) amount of the chitin and starch incorporated ranges from 2% to 8%. The mechanical, dynamic mechanical, thermal and microstructural properties were analyzed. The results from the tensile strength, yield strength, Young's modulus, and impact showed that the PLA–chitin–starch blend has the best mechanical properties compared to PLA–chitin and PLA–starch blends. The dynamic mechanical analysis result shows a better damping property for PLA–chitin than PLA–chitin–starch and PLA–starch. On the other hand, the thermal property analysis from thermogravimetry analysis (TGA) shows no significant improvement in a specific order, but the glass transition temperature of the composite increased compared to that of neat PLA. However, the degradation process was found to start with PLA–chitin for all composites, which suggests an improvement in PLA degradation. Significantly, the morphological analysis revealed a uniform mix with an obvious blend network in the three composites. Interestingly, the network was more significant in the PLA–chitin–starch blend, which may be responsible for its significantly enhanced mechanical properties compared with PLA–chitin and PLA–starch samples.

ACS Style

N.G. Olaiya; Indra Surya; P.K. Oke; Samsul Rizal; E.R. Sadiku; S.S. Ray; P.K. Farayibi; Sohrab Hossain; H.P.S. Abdul Khalil. Properties and Characterization of a PLA–Chitin–Starch Biodegradable Polymer Composite. Polymers 2019, 11, 1656 .

AMA Style

N.G. Olaiya, Indra Surya, P.K. Oke, Samsul Rizal, E.R. Sadiku, S.S. Ray, P.K. Farayibi, Sohrab Hossain, H.P.S. Abdul Khalil. Properties and Characterization of a PLA–Chitin–Starch Biodegradable Polymer Composite. Polymers. 2019; 11 (10):1656.

Chicago/Turabian Style

N.G. Olaiya; Indra Surya; P.K. Oke; Samsul Rizal; E.R. Sadiku; S.S. Ray; P.K. Farayibi; Sohrab Hossain; H.P.S. Abdul Khalil. 2019. "Properties and Characterization of a PLA–Chitin–Starch Biodegradable Polymer Composite." Polymers 11, no. 10: 1656.

Journal article
Published: 01 August 2019 in Heliyon
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Understanding the tanker driver hazard awareness on chemical exposure is important to ensure that they are fortified with the appropriate information regarding the risk of their occupation. This present study was conducted to determine the awareness of the petrol tanker driver on the chemical exposure during transportation petroleum product. The assessment on hazardous awareness of the petrol tank driver was conducted through questionnaire survey. Wherein, the questionnaire was designed with considering the variables of age of the driver, working experience, working hours in a day and knowledge on chemical hazard presence in the petroleum oil. A reliability test of Cronbach's Alpha was performed to validate the questionnaire and the Chi-Square test was conducted to determine the correlation among the studied variables. The findings of the present study revealed that the drivers who are frequently come into direct contact with petrol cannot identify the spillage had occurred during working. The study identified that there is an urgency to conduct training on safe handling of petroleum oil in order to eliminate the risk of chemical hazards exposure to the tanker driver.

ACS Style

Ahmad Noor Syimir Fizal; Sohrab Hossain; Abbas F.M. Alkarkhi; Adeleke AbdulRahman Oyekanmi; Siti Rahayu Mohd Hashim; Nor Afifah Khalil; Muzafar Zulkifli; Ahmad Naim Ahmad Yahaya. Assessment of the chemical hazard awareness of petrol tanker driver: A case study. Heliyon 2019, 5, e02368 .

AMA Style

Ahmad Noor Syimir Fizal, Sohrab Hossain, Abbas F.M. Alkarkhi, Adeleke AbdulRahman Oyekanmi, Siti Rahayu Mohd Hashim, Nor Afifah Khalil, Muzafar Zulkifli, Ahmad Naim Ahmad Yahaya. Assessment of the chemical hazard awareness of petrol tanker driver: A case study. Heliyon. 2019; 5 (8):e02368.

Chicago/Turabian Style

Ahmad Noor Syimir Fizal; Sohrab Hossain; Abbas F.M. Alkarkhi; Adeleke AbdulRahman Oyekanmi; Siti Rahayu Mohd Hashim; Nor Afifah Khalil; Muzafar Zulkifli; Ahmad Naim Ahmad Yahaya. 2019. "Assessment of the chemical hazard awareness of petrol tanker driver: A case study." Heliyon 5, no. 8: e02368.

Journal article
Published: 08 February 2019 in Journal of Cleaner Production
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Palm oil mill effluent (POME) is a highly polluted industrial wastewater that may cause detrimental environmental pollution if discharged directly due to its biochemical oxygen demand (BOD) and chemical oxygen demand (COD) concentrations. In the present study, the performance of FeSO4.7H2O waste from titanium oxide industry was investigated in removing BOD, COD, and total suspended solids (TSS) from POME. Jar tests were conducted with varying coagulant doses (1–5 g L−1), pH (2–10), and temperature (40–80 °C) as a function of treatment time ranging from 5 to 90 min. Results show that the FeSO4.7H2O waste can remove about 70% COD, over 80% BOD, and over 85% TSS in a single stage coagulation treatment. The coagulation adsorption mechanisms for the removal of COD, BOD, and TSS from POME were investigated based on Brunauer–Emmett–Teller (BET), Freundlich, and Langmuir isotherm models. The removal of COD, BOD, and TSS from POME was best described by the Freundlich isotherm model, indicating that coagulation adsorption occurred in a multilayer formation with non-uniform distribution of adsorbed particles. The coagulation adsorption kinetics studies revealed that the removal of COD, BOD, and TSS from POME using FeSO4.7H2O waste followed the second-order-kinetics modeling. Our findings suggest that the FeSO4.7H2O waste has the potential to be utilized as a coagulant for treating POME in compliance with the standard discharge limits.

ACS Style

Sohrab Hossain; Fatehah Omar; Ahmad Jaril Asis; Robert Thomas Bachmann; Zaidul Islam Sarker; Mohd Omar Ab Kadir. Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies. Journal of Cleaner Production 2019, 219, 86 -98.

AMA Style

Sohrab Hossain, Fatehah Omar, Ahmad Jaril Asis, Robert Thomas Bachmann, Zaidul Islam Sarker, Mohd Omar Ab Kadir. Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies. Journal of Cleaner Production. 2019; 219 ():86-98.

Chicago/Turabian Style

Sohrab Hossain; Fatehah Omar; Ahmad Jaril Asis; Robert Thomas Bachmann; Zaidul Islam Sarker; Mohd Omar Ab Kadir. 2019. "Effective treatment of palm oil mill effluent using FeSO4.7H2O waste from titanium oxide industry: Coagulation adsorption isotherm and kinetics studies." Journal of Cleaner Production 219, no. : 86-98.

Conference paper
Published: 03 October 2018 in Materials Today: Proceedings
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In the present study, the leaching of Cu(II) from the waste mobile phone printed circuit board (WM-PCB) was investigated using concentrated sulphuric acid solution. Cu(II)) uptake efficiency was determined at varying pH (pH 2.0 – pH 8.0), temperatures (40 oC-80 oC) and treatment time (15 - 90 min). It was observed that the copper uptake increased with increasing temperature and acid concentration. The highest Cu(II) uptake was found to be 190 mg/g at pH 6.0 and 80°C within 60 min. Results indicate that sulphuric acid has the potential to recover the heavy metals from WM-PCB.

ACS Style

Sohrab Hossain; Ahmad Naim Ahmad Yahaya; Lily Suhaila Yacob; Mohd Zulkhairi Abdul Rahim; Nor Nadiah Mohamad Yusof; Robert Thomas Bachmann. Selective recovery of Copper from waste mobile phone printed circuit boards using Sulphuric acid leaching. Materials Today: Proceedings 2018, 5, 21698 -21702.

AMA Style

Sohrab Hossain, Ahmad Naim Ahmad Yahaya, Lily Suhaila Yacob, Mohd Zulkhairi Abdul Rahim, Nor Nadiah Mohamad Yusof, Robert Thomas Bachmann. Selective recovery of Copper from waste mobile phone printed circuit boards using Sulphuric acid leaching. Materials Today: Proceedings. 2018; 5 (10):21698-21702.

Chicago/Turabian Style

Sohrab Hossain; Ahmad Naim Ahmad Yahaya; Lily Suhaila Yacob; Mohd Zulkhairi Abdul Rahim; Nor Nadiah Mohamad Yusof; Robert Thomas Bachmann. 2018. "Selective recovery of Copper from waste mobile phone printed circuit boards using Sulphuric acid leaching." Materials Today: Proceedings 5, no. 10: 21698-21702.