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The mineralization of urea fertilizer mostly regulates the nitrogen dynamics in the soil. A laboratory-scale study was conducted to compare the nitrogen dynamics in two tropical soil series incubated with either liquid urea (LU) or granular urea (GU) at 0, 300, 400 or 500 mg/kg of soil. The soils samples used in the experiment were the Bungor and Selangor soil series which have a sandy clay loam and clay texture, respectively. The NH4+-N, NO3−-N concentration in the soils were measured for four weeks to determine the urea-N mineralization while ten pore volumes of water were used for the NH4+-N and NO3−-N leaching loss. At the same application rate, higher NH4+-N and NO3−-N concentrations were recorded in the LU applied soils throughout the incubation period in case of N mineralization. Urea-N recovery was higher in GU than LU treated soils in the first two weeks while no urea-N was present in both GU and LU treated soils after the third week of incubation. The leaching of N (NH4+-N and NO3−-N) was higher in GU treated soils than that of LU and leaching was increased with increased application rate in both LU and GU in both soils. The NH4+-N and NO3−-N concentrations were higher in the Selangor soil whereas the total N leaching loss was higher in Bungor soil. The results suggest that the LU was a better N fertilizer source than GU for rapid mineralization, quicker N availability and lower N leaching loss.
Ahmmed Motasim; Abd Samsuri; Arina Abdul Sukor; Amin Adibah. Nitrogen Dynamics in Tropical Soils Treated with Liquid and Granular Urea Fertilizers. Agriculture 2021, 11, 546 .
AMA StyleAhmmed Motasim, Abd Samsuri, Arina Abdul Sukor, Amin Adibah. Nitrogen Dynamics in Tropical Soils Treated with Liquid and Granular Urea Fertilizers. Agriculture. 2021; 11 (6):546.
Chicago/Turabian StyleAhmmed Motasim; Abd Samsuri; Arina Abdul Sukor; Amin Adibah. 2021. "Nitrogen Dynamics in Tropical Soils Treated with Liquid and Granular Urea Fertilizers." Agriculture 11, no. 6: 546.
Densification of ashy biochar into tablet can enhance the handling and conveyance efficiencies of biochar. It was hypothesized that fertilizer-embedded biochar tablets can slowly release embedded nutrients in synchrony with optimum nutrient uptake by crops. The objectives of this research were to determine the effects of biochar tablets with and without embedded fertilizer on soil chemical properties and nutrient use efficiency of Zea mays (sweet corn). The biochar tablet (BT) was produced by blending a biochar mixture with starch followed by densification using a single punch tablet press whereas the fertilizer embedded biochar tablet (BF) was prepared using the same procedure except that NPK fertilizer was added during blending. A pot experiment with five fertilization treatments including control was carried out in an open field located in Perlis, Malaysia. Co-application of biochar and fertilizer increased soil total carbon, nitrogen, but it reduced soil electrical conductivity (EC). Additionally, the BF significantly increased leaf chlorophyll content, dry root weight, and total plant nutrient use efficiency of sweet corn. The findings suggest that BF can serve as a slow release fertilizer to improve crop nutrient use efficiency. Therefore, embedding fertilizer in biochar tablets is recommended for sweet corn production following a long term field study to confirm the findings of this pot study.
Yit Lee; Osumanu Ahmed; Samsuri Wahid; Zakry AB Aziz. Biochar Tablets with and without Embedded Fertilizer on the Soil Chemical Characteristics and Nutrient Use Efficiency of Zea mays. Sustainability 2021, 13, 4878 .
AMA StyleYit Lee, Osumanu Ahmed, Samsuri Wahid, Zakry AB Aziz. Biochar Tablets with and without Embedded Fertilizer on the Soil Chemical Characteristics and Nutrient Use Efficiency of Zea mays. Sustainability. 2021; 13 (9):4878.
Chicago/Turabian StyleYit Lee; Osumanu Ahmed; Samsuri Wahid; Zakry AB Aziz. 2021. "Biochar Tablets with and without Embedded Fertilizer on the Soil Chemical Characteristics and Nutrient Use Efficiency of Zea mays." Sustainability 13, no. 9: 4878.
Gaseous loss of N leads to lower nitrogen use efficiency (NUE) of applied urea and N content of the soil. This laboratory study was conducted to compare the nitrogen losses from two tropical soil series (Bungor sandy clay loam and Selangor clay) incubated with either liquid urea (LU) or granular urea (GU) at 0, 300, 400, or 500 mg/kg of soil for thirty days. The NH3 volatilization, N2O emission, and N content in the soils were measured throughout the incubation period. For the same application rate, the total NH3 volatilization loss was higher in GU-treated soils than the LU-treated soils. NH3 volatilization loss continued up to the 15th day in the Selangor soil, while in the Bungor soil series it continued up to the 26th day. Higher amounts of N2O emissions were recorded in GU-treated soils than the LU-treated soils, and N2O emission increased with increasing rate of GU and LU applications in both soils. The N2O emission was higher only in the first few days and then tapered off at the seventh and eighth day in Bungor and Selangor soil series, respectively. The total N2O emission was higher in the Selangor soil series than that of Bungor soil series. The total N content that remained in the LU-treated soils after 30 days of incubation was higher than the GU-treated soils. The total N loss from applied urea was higher in the sandy clay loam Bungor soils than that of clayey Selangor soil series. The results suggest that the LU may be a better N fertilizer source than GU due to lower N loss from NH3 volatilization and N2O emission.
Ahmmed Motasim; Abd Samsuri; Arina Abdul Sukor; Amin Adibah. Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application. Sustainability 2021, 13, 3128 .
AMA StyleAhmmed Motasim, Abd Samsuri, Arina Abdul Sukor, Amin Adibah. Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application. Sustainability. 2021; 13 (6):3128.
Chicago/Turabian StyleAhmmed Motasim; Abd Samsuri; Arina Abdul Sukor; Amin Adibah. 2021. "Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application." Sustainability 13, no. 6: 3128.
In the present study, a mixed culture from a local agricultural soil sample was isolated for Metanil Yellow (MY) dye decolorization. The metagenomic analysis confirmed that 42.6% has been dominated by genus Bacillus, while Acinetobacter (14.0%) is present in the microbial communities of the mixed culture. For fungi diversity analysis, around 97.0% was “unclassified” fungi and 3% was Candida. The preliminary investigation in minimal salt media (MSM) showed that 100% decolorization was achieved after 24 h of incubation. Response surface methodology (RSM) was successfully applied using Box-Behnken design (BBD) to study the effect of four independent parameters—MY dye concentration, glucose concentration, ammonium sulfate concentration, and pH—on MY dye decolorization by the mixed bacterial culture. The optimal conditions predicted by the desirability function were 73 mg/L of MY, 1.934% glucose, 0.433 g/L of ammonium sulfate, and a pH of 7.097, with 97.551% decolorization The correlation coefficients (R2 and R2 adj) of 0.913 and 0.825 indicate that the established model is suitable to predict the effectiveness of dye decolorization under the investigated condition. The MY decolorization of the mixed bacterial culture was not affected by the addition of heavy metals in the growth media. Among the 10 heavy metals tested, only copper gave 56.19% MY decolorization, whereas the others gave almost 100% decolorization. The decolorization potential of the mixed bacterial culture indicates that it could be effective for future bioremediation of soil-contaminated sites and treatment solutions of water bodies polluted with the MY dye.
Fatin Muliadi; Mohd Halmi; Samsuri Wahid; Siti Gani; Uswatun Zaidan; Khairil Mahmud; Mohd Abd Shukor. Biostimulation of Microbial Communities from Malaysian Agricultural Soil for Detoxification of Metanil Yellow Dye; a Response Surface Methodological Approach. Sustainability 2020, 13, 138 .
AMA StyleFatin Muliadi, Mohd Halmi, Samsuri Wahid, Siti Gani, Uswatun Zaidan, Khairil Mahmud, Mohd Abd Shukor. Biostimulation of Microbial Communities from Malaysian Agricultural Soil for Detoxification of Metanil Yellow Dye; a Response Surface Methodological Approach. Sustainability. 2020; 13 (1):138.
Chicago/Turabian StyleFatin Muliadi; Mohd Halmi; Samsuri Wahid; Siti Gani; Uswatun Zaidan; Khairil Mahmud; Mohd Abd Shukor. 2020. "Biostimulation of Microbial Communities from Malaysian Agricultural Soil for Detoxification of Metanil Yellow Dye; a Response Surface Methodological Approach." Sustainability 13, no. 1: 138.
In this study, the Metanil Yellow (MY) decolorizing mixed culture, namely FN3, has been isolated from agriculture soil. The mixed culture was immobilized using gellan gum. In order to optimize the immobilization process for maximal dye decolorization, Response Surface Methodology (RSM) was performed. The optimal conditions for immobilization predicted by desirability function are 130 mg/L of MY dye concentration, 1.478% of gellan gum concentration, 50 beads and 0.6 cm of beads size with the percentage of decolorization of 90.378%. The correlation coefficients of the model (R2 and R2 adj) are 0.9767 and 0.9533, respectively. This indicates that the established model is suitable to predict the effectiveness of dye decolorization under the investigated condition. The immobilized beads of mixed culture FN3 were able to be reused up to 15 batches of decolorization. The immobilized cells also have high tolerance towards heavy metals. This was proven by higher dye decolorization rate by the immobilized cells even with the addition of heavy metals in the media. The decolorization potential of the mixed culture indicates that it could be useful for future bioremediation of soil contaminated sites and treatment solutions of water bodies polluted with MY dye.
Fatin Muliadi; Mohd Halmi; Samsuri Wahid; Siti Gani; Khairil Mahmud; Mohd Shukor. Immobilization of Metanil Yellow Decolorizing Mixed Culture FN3 Using Gelling Gum as Matrix for Bioremediation Application. Sustainability 2020, 13, 36 .
AMA StyleFatin Muliadi, Mohd Halmi, Samsuri Wahid, Siti Gani, Khairil Mahmud, Mohd Shukor. Immobilization of Metanil Yellow Decolorizing Mixed Culture FN3 Using Gelling Gum as Matrix for Bioremediation Application. Sustainability. 2020; 13 (1):36.
Chicago/Turabian StyleFatin Muliadi; Mohd Halmi; Samsuri Wahid; Siti Gani; Khairil Mahmud; Mohd Shukor. 2020. "Immobilization of Metanil Yellow Decolorizing Mixed Culture FN3 Using Gelling Gum as Matrix for Bioremediation Application." Sustainability 13, no. 1: 36.
Lack of regulation in bauxite mining has caused land contamination in Malaysia. Land rehabilitation requires plants with excellent adaptability to adverse conditions. Inedible, economical viable crops with environmental co-benefits, like phytoremediation, are preferred. In this study, Jatropha curcas was evaluated for its growth performance in bauxite mine soil. Topsoil and exposed subsoil were sampled from a bauxite mine at Bukit Goh, Kuantan and used for growing J. curcas for 90 days under greenhouse conditions. The soil physicochemical properties, plant growth parameters (increase in number of leaves, plant height, and basal diameter), and oil yield were determined. The findings showed that the mine soils had lower nutrient status than unmined soil as reflected by the total C, N, P, and K values. Al, Fe, and Pb were relatively high in topsoil and subsoil. Plants grown in both mine soils recorded significantly lower increases in plant height and basal diameter but higher increases in number of leaves than that of nursery soil. Oil yield was significantly different between the plants grown in subsoil (46.54%) and topsoil (41.65%). The study demonstrated that J. curcas has the potential to be cultivated as an alternative crop in bauxite mine soil.
Lim Mingyuan; Abd Samsuri; Mohd Shukor; Lai Phang. Growth Performance of Jatropha curcas Cultivated on Local Abandoned Bauxite Mine Soil. Sustainability 2020, 12, 8263 .
AMA StyleLim Mingyuan, Abd Samsuri, Mohd Shukor, Lai Phang. Growth Performance of Jatropha curcas Cultivated on Local Abandoned Bauxite Mine Soil. Sustainability. 2020; 12 (19):8263.
Chicago/Turabian StyleLim Mingyuan; Abd Samsuri; Mohd Shukor; Lai Phang. 2020. "Growth Performance of Jatropha curcas Cultivated on Local Abandoned Bauxite Mine Soil." Sustainability 12, no. 19: 8263.
The release of wastewater from textile dyeing industrial sectors is a huge concern with regard to pollution as the treatment of these waters is truly a challenging process. Hence, this study investigates the triazo bond Direct Blue 71 (DB71) dye decolorization and degradation dye by a mixed bacterial culture in the deficiency source of carbon and nitrogen. The metagenomics analysis found that the microbial community consists of a major bacterial group of Acinetobacter (30%), Comamonas (11%), Aeromonadaceae (10%), Pseudomonas (10%), Flavobacterium (8%), Porphyromonadaceae (6%), and Enterobacteriaceae (4%). The richest phylum includes Proteobacteria (78.61%), followed by Bacteroidetes (14.48%) and Firmicutes (3.08%). The decolorization process optimization was effectively done by using response surface methodology (RSM) and artificial neural network (ANN). The experimental variables of dye concentration, yeast extract, and pH show a significant effect on DB71 dye decolorization percentage. Over a comparative scale, the ANN model has higher prediction and accuracy in the fitness compared to the RSM model proven by approximated R2 and AAD values. The results acquired signify an efficient decolorization of DB71 dye by a mixed bacterial culture.
Khairunnisa’ Mohd Zin; Mohd Izuan Effendi Halmi; Siti Salwa Abd Gani; Uswatun Hasanah Zaidan; A. Wahid Samsuri; Mohd Yunus Abd Shukor. Microbial Decolorization of Triazo Dye, Direct Blue 71: An Optimization Approach Using Response Surface Methodology (RSM) and Artificial Neural Network (ANN). BioMed Research International 2020, 2020, 2734135 -16.
AMA StyleKhairunnisa’ Mohd Zin, Mohd Izuan Effendi Halmi, Siti Salwa Abd Gani, Uswatun Hasanah Zaidan, A. Wahid Samsuri, Mohd Yunus Abd Shukor. Microbial Decolorization of Triazo Dye, Direct Blue 71: An Optimization Approach Using Response Surface Methodology (RSM) and Artificial Neural Network (ANN). BioMed Research International. 2020; 2020 ():2734135-16.
Chicago/Turabian StyleKhairunnisa’ Mohd Zin; Mohd Izuan Effendi Halmi; Siti Salwa Abd Gani; Uswatun Hasanah Zaidan; A. Wahid Samsuri; Mohd Yunus Abd Shukor. 2020. "Microbial Decolorization of Triazo Dye, Direct Blue 71: An Optimization Approach Using Response Surface Methodology (RSM) and Artificial Neural Network (ANN)." BioMed Research International 2020, no. : 2734135-16.
Pentachlorophenol (PCP) has been used extensively in the wood preservation industry. It is highly persistent in the environment and toxic to living organisms. The present study investigated the effectiveness of an oil palm empty fruit bunch biochar (EFBB) pyrolyzed at 350, 550 and 650°C in adsorbing PCP as compared to a commercial activated carbon (AC). The ash content, surface area and aromaticity increased while the pore volume, cation exchange capacity, O/C and (O+N)/C molar ratios decreased as the pyrolysis temperature increased. Only the EFBB pyrolyzed at 350°C and the AC adsorbed the PCP while no PCP adsorption was observed on the EFBBs pyrolyzed at 550°C and 650°C. The Langmuir maximum adsorption capacity (Qmax) values was 6.035 mg g−1, and 126.582 mg g−1 for the 350°C EFBB and the AC, respectively. The higher porosity and more oxygenated functional groups of the EFBB pyrolyzed at 350°C EFBB could be the reason for its ability to adsorb the PCP compared to the other EFBBs. The high PCP sorption by the AC on the other hand, could be attributed to its high surface area and microporous structure.
Puvaneswaree Nalaya; Samsuri Abd. Wahid; Halmi Effendi Mohd. Izuan. Characterization of Empty Fruit Bunch Biochar Pyrolyzed at Different Temperatures with Respect to Activated Carbon and their Sorption Capacities for Pentachlorophenol. Journal of Water and Environment Technology 2020, 18, 314 -326.
AMA StylePuvaneswaree Nalaya, Samsuri Abd. Wahid, Halmi Effendi Mohd. Izuan. Characterization of Empty Fruit Bunch Biochar Pyrolyzed at Different Temperatures with Respect to Activated Carbon and their Sorption Capacities for Pentachlorophenol. Journal of Water and Environment Technology. 2020; 18 (5):314-326.
Chicago/Turabian StylePuvaneswaree Nalaya; Samsuri Abd. Wahid; Halmi Effendi Mohd. Izuan. 2020. "Characterization of Empty Fruit Bunch Biochar Pyrolyzed at Different Temperatures with Respect to Activated Carbon and their Sorption Capacities for Pentachlorophenol." Journal of Water and Environment Technology 18, no. 5: 314-326.
Glyphosate (GLY) is a major herbicide used throughout the world, and its continuous application has become an environmental issue. Adsorption is an important mechanism for removing organic contaminant in water. The present study characterized cow dung (CD) and rice husk ash (RHA), and determined the adsorption-desorption of GLY and its metabolite, aminomethylphoshonic acid (AMPA), on to them. The results revealed that both CD and RHA were alkaline and had no or low content of arsenic, cadmium, chromium and lead. The CD had lower surface area (13.104 mg2g−1) than RHA (21.500 m2g−1). The CD contained amines, phenol, ethers and carboxylic functional groups, while in addition to carboxylic and ether, RHA contains siloxane. Both CD and RHA had high affinities for GLY and AMPA. The Freundlich sorption coefficient (Kf) on AMPA were 2.915 and 2.660 for CD and RHA, respectively, while the values on GLY were 1.168 and 1.166 (mg g−1) for CD and RHA, respectively. Desorption of GLY only occurred at lower concentrations, while no desorption of AMPA was recorded, indicating their strong adsorption on CD and RHA. Considering their availabilities and affordable prices, both CD and RHA can be recommended as economical adsorbent for the removal of GLY and AMPA.
Jamilu Garba; Wahid Abd Samsuri; Radziah Othman; Muhammad Saiful Ahmad Hamdani. Evaluation of Adsorptive Characteristics of Cow Dung and Rice Husk Ash for Removal of Aqueous Glyphosate and Aminomethylphoshonic Acid. Scientific Reports 2019, 9, 1 .
AMA StyleJamilu Garba, Wahid Abd Samsuri, Radziah Othman, Muhammad Saiful Ahmad Hamdani. Evaluation of Adsorptive Characteristics of Cow Dung and Rice Husk Ash for Removal of Aqueous Glyphosate and Aminomethylphoshonic Acid. Scientific Reports. 2019; 9 (1):1.
Chicago/Turabian StyleJamilu Garba; Wahid Abd Samsuri; Radziah Othman; Muhammad Saiful Ahmad Hamdani. 2019. "Evaluation of Adsorptive Characteristics of Cow Dung and Rice Husk Ash for Removal of Aqueous Glyphosate and Aminomethylphoshonic Acid." Scientific Reports 9, no. 1: 1.
Various amendments are used to reduce the phytoavailability of heavy metals in contaminated soils, but recently the use of biochar is receiving serious attention. In this study, two particle sizes of an oil palm empty fruit bunch biochar (EFBB); 2 mm (C-EFBB) were applied at either 0, 0.5, or 1% (w/w) to soils contaminated with either Cd or Pb and the phytoavailability of these metals by mustard plants grown on the soils was evaluated. Results revealed that the application of EFBB at 1% significantly increased plant growth parameters as compared with the control in Cd-soil. However, there was no significant effect of EFBB application rate on plant growth parameters in Pb-soil. There was a significant difference in the concentrations of Cd and Pb in the plant root and shoot between soils receiving different particle sizes of EFBB. The treatment of 1% F-EFBB gave the lowest concentration of the Cd concentration in the shoot (115.200 mgkg−1) and Pb concentration in the root and shoot (4196.000 and 78.467 mgkg−1, respectively) as compared with the other treatments. Therefore, F-EFBB application at high rates can be recommended for reducing the phytoavailability of Cd and Pb in contaminated soils.
Wahid Samsuri; Alaa Hasan Fahmi; Hamdan Jol; Singh Daljit. Particle size and rate of biochar affected the phytoavailability of Cd and Pb by mustard plants grown in contaminated soils. International Journal of Phytoremediation 2019, 22, 567 -577.
AMA StyleWahid Samsuri, Alaa Hasan Fahmi, Hamdan Jol, Singh Daljit. Particle size and rate of biochar affected the phytoavailability of Cd and Pb by mustard plants grown in contaminated soils. International Journal of Phytoremediation. 2019; 22 (6):567-577.
Chicago/Turabian StyleWahid Samsuri; Alaa Hasan Fahmi; Hamdan Jol; Singh Daljit. 2019. "Particle size and rate of biochar affected the phytoavailability of Cd and Pb by mustard plants grown in contaminated soils." International Journal of Phytoremediation 22, no. 6: 567-577.
This study investigated the effect of rice husk ash (RHA) and inorganic fertilizer on the phytoremediation of heavy metals in mine tailings by vetiver grass (Vetiveria zizanioides L. Nash). The mine tailings were amended with either RHA or iron-coated RHA (Fe-RHA) at 0 or 10% (w/w) application rates and vetiver grass was planted on the tailings. The vetiver grass was fertilized with three rates (0, 50 and 100 kg ha−1) of NPK fertilisers during the 75 days growth period in a glasshouse and the experimental units were arranged in a randomized complete block design. At harvest, the shoot and root of the plants were separated and their uptake of As, Cd, Cu, Cr, Pb, Mn and Zn were determined. Application of RHA showed an increase (p < 0.05) in pH and dissolved organic carbon (DOC) contents of the tailings. Growth and total dry biomass of the vetiver was higher (p < 0.05) in the tailings applied with NPK only compared to RHA and Fe-RHA amended tailings Meanwhile, application of NPK and RHA enhanced the heavy metals uptake by vetiver grass from the mine tailings. The plants grown in tailings amended with RHA +100 kg ha−1 NPK had the highest (p < 0.05) As uptake while the highest (p < 0.05) Cd and Cr uptake was observed in plants grown on tailings amended with Fe-RHA + 100 kg ha−1 NPK. The highest (p < 0.05) Cu and Mn uptake were observed in plants grown on tailings receiving only NPK. The bioaccumulation coefficient (BAC) values for all elements were 1.0. The results suggest that the vetiver grass can be recommended for stabilisation of Zn and for phytoextraction of Cr, Cu and Mn from the mine tailings.
Wahid Samsuri; F.S. Tariq; D.S. Karam; A.Z. Aris; G. Jamilu. The effects of rice husk ashes and inorganic fertilizers application rates on the phytoremediation of gold mine tailings by vetiver grass. Applied Geochemistry 2019, 108, 104366 .
AMA StyleWahid Samsuri, F.S. Tariq, D.S. Karam, A.Z. Aris, G. Jamilu. The effects of rice husk ashes and inorganic fertilizers application rates on the phytoremediation of gold mine tailings by vetiver grass. Applied Geochemistry. 2019; 108 ():104366.
Chicago/Turabian StyleWahid Samsuri; F.S. Tariq; D.S. Karam; A.Z. Aris; G. Jamilu. 2019. "The effects of rice husk ashes and inorganic fertilizers application rates on the phytoremediation of gold mine tailings by vetiver grass." Applied Geochemistry 108, no. : 104366.
This study was conducted to determine the effects of rice husk ash (RHA) and Fe-coated rice husk ash (Fe-RHA) on the bioavailability and mobility of As, Cd, and Mn in mine tailings. The amendments were added to the tailings at 0, 5, 10, or 20% (w/w) and the mixtures were incubated for 0, 7, 15, 30, 45, and 60 days. The CaCl2 extractable As, Cd, and Mn in the amended tailings were determined at each interval of incubation period. In addition, the tailings mixture was leached with simulated rain water (SRW) every week from 0 day (D 0) until day 60 (D 60). The results showed that both RHA and Fe-RHA application significantly decreased the CaCl2-extractable Cd and Mn but increased that of As in the tailings throughout the incubation period. Consequently, addition of both RHA and Fe-RHA leached out higher amount of As from the tailings but decreased Cd and Mn concentration compared to the controls. The amount of As leached from the Fe-RHA-amended tailings was less than that from RHA-amended tailings. Application of both RHA and Fe-RHA could be an effective way in decreasing the availability of cationic heavy metals (Cd and Mn) in the tailings but these amendments could result in increasing the availability of anionic metalloid (As). Therefore, selection of organic amendments to remediate metal-contaminated tailings must be done with great care because the outcomes might be different among the elements.
F. S. Tariq; Wahid Samsuri; D. S. Karam; Ahmad Zaharin Aris; G. Jamilu. Bioavailability and mobility of arsenic, cadmium, and manganese in gold mine tailings amended with rice husk ash and Fe-coated rice husk ash. Environmental Monitoring and Assessment 2019, 191, 232 .
AMA StyleF. S. Tariq, Wahid Samsuri, D. S. Karam, Ahmad Zaharin Aris, G. Jamilu. Bioavailability and mobility of arsenic, cadmium, and manganese in gold mine tailings amended with rice husk ash and Fe-coated rice husk ash. Environmental Monitoring and Assessment. 2019; 191 (4):232.
Chicago/Turabian StyleF. S. Tariq; Wahid Samsuri; D. S. Karam; Ahmad Zaharin Aris; G. Jamilu. 2019. "Bioavailability and mobility of arsenic, cadmium, and manganese in gold mine tailings amended with rice husk ash and Fe-coated rice husk ash." Environmental Monitoring and Assessment 191, no. 4: 232.
Plant growth-promoting rhizobacteria (PGPR) are highly promising biofertilizers that contribute to eco-friendly sustainable agriculture. There have been many reports on the anti-microbial properties of nanoparticles (NPs). Toxic effects of NPs under laboratory conditions have also reported; however, there is a lack of information about their uptake and mobility in organisms under environmental conditions. There is an urgent need to determine the highest concentration of NPs which is not detrimental for growth and proliferation of PGPR. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to measure the size and shape of NPs. Minimum inhibitory concentrations (MIC) of nano-silver on selected beneficial microbes and Ralstonia solanacearum were measured using the microdilution broth method. The percentage of seed germination was measured under in vitro conditions. NPs were spherical with a size of 16 ± 6 nm. Nano-silver at 12-40 mg l-1 inhibited the growth of bacteria. Seed application at 40 mg l-1 protected seeds from R. solanacearum and improved the rate of seed germination.
Poopak Sotoodehnia; Norida Mazlan; Halimi Mohd Saud; Wahid Samsuri; Sheikh Hasna Habib; Amin Soltangheisi. Minimum inhibitory concentration of nano-silver bactericides for beneficial microbes and its effect on Ralstonia solanacearum and seed germination of Japanese Cucumber (Cucumis sativus). PeerJ 2019, 7, e6418 .
AMA StylePoopak Sotoodehnia, Norida Mazlan, Halimi Mohd Saud, Wahid Samsuri, Sheikh Hasna Habib, Amin Soltangheisi. Minimum inhibitory concentration of nano-silver bactericides for beneficial microbes and its effect on Ralstonia solanacearum and seed germination of Japanese Cucumber (Cucumis sativus). PeerJ. 2019; 7 ():e6418.
Chicago/Turabian StylePoopak Sotoodehnia; Norida Mazlan; Halimi Mohd Saud; Wahid Samsuri; Sheikh Hasna Habib; Amin Soltangheisi. 2019. "Minimum inhibitory concentration of nano-silver bactericides for beneficial microbes and its effect on Ralstonia solanacearum and seed germination of Japanese Cucumber (Cucumis sativus)." PeerJ 7, no. : e6418.
Biochars have been successfully used to reduce bioavailability and leaching of heavy metals in contaminated soils. The efficiency of biochar to immobilize heavy metals can be increased by reducing the particle size, which can increase the surface area and the cation exchange capacity (CEC). In this study, the empty fruit bunch biochar (EFBB) of oil palm was separated into two particle sizes, namely, fine (F-EFBB < 50 µm) and coarse (C-EFBB > 2 mm), to treat the contaminated soil with Cd and Pb. Results revealed that the addition of C-EFBB and F-EFBB increased the pH, electrical conductivity and CEC of the contaminated soil. The amounts of synthetic rainwater extractable and leachable Cd and Pb significantly decreased with the EFBB application. The lowest extractable and leachable Cd and Pb were observed from 1% F-EFBB-treated soil. The amount of extractable and leachable Cd and Pb decreased with increasing incubation times and leaching cycles. The application of F-EFBB to Cd and Pb-contaminated soil can immobilize the heavy metals more than that of C-EFBB. Therefore, the EFBB can be recommended for the remediation of heavy metal-contaminated soils, and a finer particle size can be applied at a lower application rate than the coarser biochar to achieve these goals.
Alaa Hasan Fahmi; Abd Wahid Samsuri; Hamdan Jol; Daljit Singh Karam Singh. Bioavailability and leaching of Cd and Pb from contaminated soil amended with different sizes of biochar. Royal Society Open Science 2018, 5, 181328 .
AMA StyleAlaa Hasan Fahmi, Abd Wahid Samsuri, Hamdan Jol, Daljit Singh Karam Singh. Bioavailability and leaching of Cd and Pb from contaminated soil amended with different sizes of biochar. Royal Society Open Science. 2018; 5 (11):181328.
Chicago/Turabian StyleAlaa Hasan Fahmi; Abd Wahid Samsuri; Hamdan Jol; Daljit Singh Karam Singh. 2018. "Bioavailability and leaching of Cd and Pb from contaminated soil amended with different sizes of biochar." Royal Society Open Science 5, no. 11: 181328.
Biochars have been successfully used to treat wastewater and contaminated soils.
Alaa Hasan Fahmi; Abd Wahid Samsuri; Hamdan Jol; Daljit Singh Karam Singh. Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption. RSC Advances 2018, 8, 38270 -38280.
AMA StyleAlaa Hasan Fahmi, Abd Wahid Samsuri, Hamdan Jol, Daljit Singh Karam Singh. Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption. RSC Advances. 2018; 8 (67):38270-38280.
Chicago/Turabian StyleAlaa Hasan Fahmi; Abd Wahid Samsuri; Hamdan Jol; Daljit Singh Karam Singh. 2018. "Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption." RSC Advances 8, no. 67: 38270-38280.
This study investigates adsorption-desorption and the leaching potential of glyphosate and aminomethylphosphonic acid (AMPA) in control and amended—addition of cow dung or rice husk ash—acidic Malaysian soil with high oxide mineral content. The addition of cow dung or rice husk ash increased the adsorptive removal of AMPA. The isotherm data of glyphosate and AMPA best fitted the Freundlich model. The constant Kf for glyphosate was high in the control soil (544.873 mg g−1) followed by soil with cow dung (482.451 mg g−1) then soil with rice husk ash (418.539 mg g−1). However, for AMPA, soil with cow dung was high (166.636 mg g−1) followed by soil with rice husk ash (137.570 mg g−1) then the control soil (48.446 mg g−1). The 1/n values for both glyphosate and AMPA adsorptions were < 1 indicating their strong affinity for adsorbents. Desorption of both glyphosate and AMPA occurred only in the control soil. The compounds were not detected in soils with added cow dung or rice husk ash. The addition of cow dung or rice husk ash increased glyphosate mobility. However, ground water ubiquity scores for both control and amended soils were < 2.8. This indicated glyphosate is a transitional herbicide; therefore, its leaching potential in the soil is low, despite the addition of cow dung or rice husk ash. Addition of these wastes decreased the mobility and leaching potential of AMPA. The addition of cow dung or rice husk ash could be beneficial in increasing adsorption and enhancing degradation of these compounds.
Jamilu Garba; Wahid Samsuri; Radziah Othman; Muhammad Saiful Ahmad Hamdani. Adsorption-desorption and leaching potential of glyphosate and aminomethylphosphonic acid in acidic Malaysian soil amended with cow dung and rice husk ash. Environmental Monitoring and Assessment 2018, 190, 676 .
AMA StyleJamilu Garba, Wahid Samsuri, Radziah Othman, Muhammad Saiful Ahmad Hamdani. Adsorption-desorption and leaching potential of glyphosate and aminomethylphosphonic acid in acidic Malaysian soil amended with cow dung and rice husk ash. Environmental Monitoring and Assessment. 2018; 190 (11):676.
Chicago/Turabian StyleJamilu Garba; Wahid Samsuri; Radziah Othman; Muhammad Saiful Ahmad Hamdani. 2018. "Adsorption-desorption and leaching potential of glyphosate and aminomethylphosphonic acid in acidic Malaysian soil amended with cow dung and rice husk ash." Environmental Monitoring and Assessment 190, no. 11: 676.
This study aims to produce optimized biochar from oil palm empty fruit bunches (OPEFB), as a green, low cost adsorbent for uptake of zinc from aqueous solution. The impact of pyrolysis conditions, namely, highest treatment temperature (HTT), heating rate (HR), and residence time (RT) on biochar yield and adsorption capacity towards zinc, was investigated. Mathematical modeling and optimization of independent variables were performed employing response surface methodology (RSM). HTT was found to be the most influential variable, followed by residence time and heating rate. Based on the central composite design (CCD), two quadratic models were developed to correlate three independent variables to responses. The optimum production condition for OPEFB biochar was found as follows: HTT of 615°C, HR of 8°C/min, and RT of 128 minutes. The optimum biochar showed 15.18 mg/g adsorption capacity for zinc and 25.49% of yield which was in agreement with the predicted values, satisfactory. Results of the characterization of optimum product illustrated well-developed BET surface area and porous structure in optimum product which favored its sorptive ability.
Seyed Ali Zamani; Robiah Yunus; A. W. Samsuri; M. A. Mohd Salleh; Bahareh Asady. Removal of Zinc from Aqueous Solution by Optimized Oil Palm Empty Fruit Bunches Biochar as Low Cost Adsorbent. Bioinorganic Chemistry and Applications 2017, 2017, 1 -9.
AMA StyleSeyed Ali Zamani, Robiah Yunus, A. W. Samsuri, M. A. Mohd Salleh, Bahareh Asady. Removal of Zinc from Aqueous Solution by Optimized Oil Palm Empty Fruit Bunches Biochar as Low Cost Adsorbent. Bioinorganic Chemistry and Applications. 2017; 2017 ():1-9.
Chicago/Turabian StyleSeyed Ali Zamani; Robiah Yunus; A. W. Samsuri; M. A. Mohd Salleh; Bahareh Asady. 2017. "Removal of Zinc from Aqueous Solution by Optimized Oil Palm Empty Fruit Bunches Biochar as Low Cost Adsorbent." Bioinorganic Chemistry and Applications 2017, no. : 1-9.
MATEC Web of Conferences, open access proceedings in Materials science, Engineering and Chemistry
L.Y. Leng; M. H. A. Husni; Wahid Samsuri; Norawanis Abdul Razak; N. M. Lailina; Ras Izzati Ismail. Chemical Characterization of Pineapple Leaf Residue Chars generated by Controlled Combustion and by open burning. MATEC Web of Conferences 2017, 97, 01061 .
AMA StyleL.Y. Leng, M. H. A. Husni, Wahid Samsuri, Norawanis Abdul Razak, N. M. Lailina, Ras Izzati Ismail. Chemical Characterization of Pineapple Leaf Residue Chars generated by Controlled Combustion and by open burning. MATEC Web of Conferences. 2017; 97 ():01061.
Chicago/Turabian StyleL.Y. Leng; M. H. A. Husni; Wahid Samsuri; Norawanis Abdul Razak; N. M. Lailina; Ras Izzati Ismail. 2017. "Chemical Characterization of Pineapple Leaf Residue Chars generated by Controlled Combustion and by open burning." MATEC Web of Conferences 97, no. : 01061.
Fardin Sadegh-Zadeh; Abd Wahid Samsuri; Bahi Jalili Seh-Bardan; Mostafa Emadi. The effects of acidic functional groups and particle size of biochar on Cd adsorption from aqueous solutions. DESALINATION AND WATER TREATMENT 2017, 66, 309 -319.
AMA StyleFardin Sadegh-Zadeh, Abd Wahid Samsuri, Bahi Jalili Seh-Bardan, Mostafa Emadi. The effects of acidic functional groups and particle size of biochar on Cd adsorption from aqueous solutions. DESALINATION AND WATER TREATMENT. 2017; 66 ():309-319.
Chicago/Turabian StyleFardin Sadegh-Zadeh; Abd Wahid Samsuri; Bahi Jalili Seh-Bardan; Mostafa Emadi. 2017. "The effects of acidic functional groups and particle size of biochar on Cd adsorption from aqueous solutions." DESALINATION AND WATER TREATMENT 66, no. : 309-319.
A two years field study was conducted to explain the effect of Zn and lime application on morphological characteristics, rice yield and yield components, and more broadly, grains bio-fortification (Zn and protein content (CP), and amino acid profiles). The lime and Zn interaction increased grains and straw yield more than two times (6.64 ton ha−1) compared to the control (3.20 ton ha−1). The maximum increase in the Zn content of grain, white rice and bran was obtained about 30% in whole grain, 42% in bran and 56% in white rice. Furthermore, CP increased by about 8% in bran, 12.3% in whole grain, and 27% in white rice compared to control. Also, the Zn and lime application and their interaction were significantly increased the amino acids, especially essential parts.
Shahram Mahmoud Soltani; Mohamed Musa Hanafi; Wahid Samsuri; Sharifah Kharidah Seyed Muhammed; Mohammad Abdol Hakim. Rice growth improvement and grains bio-fortification through lime and zinc application in zinc deficit tropical acid sulphate soils. Chemical Speciation & Bioavailability 2016, 28, 152 -162.
AMA StyleShahram Mahmoud Soltani, Mohamed Musa Hanafi, Wahid Samsuri, Sharifah Kharidah Seyed Muhammed, Mohammad Abdol Hakim. Rice growth improvement and grains bio-fortification through lime and zinc application in zinc deficit tropical acid sulphate soils. Chemical Speciation & Bioavailability. 2016; 28 (1-4):152-162.
Chicago/Turabian StyleShahram Mahmoud Soltani; Mohamed Musa Hanafi; Wahid Samsuri; Sharifah Kharidah Seyed Muhammed; Mohammad Abdol Hakim. 2016. "Rice growth improvement and grains bio-fortification through lime and zinc application in zinc deficit tropical acid sulphate soils." Chemical Speciation & Bioavailability 28, no. 1-4: 152-162.