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Reverse Osmosis (RO) has already proved its worth as an efficient treatment method in chemical and environmental engineering applications. Various successful RO attempts for the rejection of organic and highly toxic pollutants from wastewater can be found in the literature over the last decade. Dimethylphenol is classified as a high-toxic organic compound found ubiquitously in wastewater. It poses a real threat to humans and the environment even at low concentration. In this paper, a model based framework was developed for the simulation and optimisation of RO process for the removal of dimethylphenol from wastewater. We incorporated our earlier developed and validated process model into the Species Conserving Genetic Algorithm (SCGA) based optimisation framework to optimise the design and operational parameters of the process. To provide a deeper insight of the process to the readers, the influences of membrane design parameters on dimethylphenol rejection, water recovery rate and the level of specific energy consumption of the process for two different sets of operating conditions are presented first which were achieved via simulation. The membrane parameters taken into consideration include membrane length, width and feed channel height. Finally, a multi-objective function is presented to optimise the membrane design parameters, dimethylphenol rejection and required energy consumption. Simulation results affirmed insignificant and significant impacts of membrane length and width on dimethylphenol rejection and specific energy consumption, respectively. However, these performance indicators are negatively influenced due to increasing the feed channel height. On the other hand, optimisation results generated an optimum removal of dimethylphenol at reduced specific energy consumption for a wide sets of inlet conditions. More importantly, the dimethylphenol rejection increased by around 2.51% to 98.72% compared to ordinary RO module measurements with a saving of around 20.6% of specific energy consumption.
Mudhar Al-Obaidi; Alejandro Ruiz-García; Ghanim Hassan; Jian-Ping Li; Chakib Kara-Zaïtri; Ignacio Nuez; Iqbal Mujtaba. Model Based Simulation and Genetic Algorithm Based Optimisation of Spiral Wound Membrane RO Process for Improved Dimethylphenol Rejection from Wastewater. Membranes 2021, 11, 595 .
AMA StyleMudhar Al-Obaidi, Alejandro Ruiz-García, Ghanim Hassan, Jian-Ping Li, Chakib Kara-Zaïtri, Ignacio Nuez, Iqbal Mujtaba. Model Based Simulation and Genetic Algorithm Based Optimisation of Spiral Wound Membrane RO Process for Improved Dimethylphenol Rejection from Wastewater. Membranes. 2021; 11 (8):595.
Chicago/Turabian StyleMudhar Al-Obaidi; Alejandro Ruiz-García; Ghanim Hassan; Jian-Ping Li; Chakib Kara-Zaïtri; Ignacio Nuez; Iqbal Mujtaba. 2021. "Model Based Simulation and Genetic Algorithm Based Optimisation of Spiral Wound Membrane RO Process for Improved Dimethylphenol Rejection from Wastewater." Membranes 11, no. 8: 595.
Floods are a great concern for people and infrastructure, and this is an issue which has increased in several regions around the globe in recent years. This study aims to evaluate flood risk areas and create a flood risk map using integrated remote sensing data and a geographic information system (GIS) in the Wasit governorate – eastern Iraq. Specifically, GIS‑based multi‑criteria analysis (MCA) was used to map flood hazard areas using a four‑criteria layer which is as follows: flow accumulation, slope, rainfall, and elevation. These four layers are standardized and combined using the overlay approach in ArcGIS software and a final map was produced. The study area was divided into five zones based on the results map, namely: very low, low, medium, high, and very high, according to the flood risk area. The resulting map indicates that over 60% of the study area is likely to experience a high and very high level of propensity of flooding. This study could be useful for government planners and decision‑makers to predict potential flooding areas and enhance flood management plans.
Kouther Hasheem Rasn; Qutaiba Abdulwahhab Nsaif; Mudhar A. Al-Obaidi; Yakubu Mandafiya John. Designation of Flood Risk Zones Using the Geographic Information System Technique and Remote Sensing Data in Wasit, Iraq. Geomatics and Environmental Engineering 2021, 15, 129 -140.
AMA StyleKouther Hasheem Rasn, Qutaiba Abdulwahhab Nsaif, Mudhar A. Al-Obaidi, Yakubu Mandafiya John. Designation of Flood Risk Zones Using the Geographic Information System Technique and Remote Sensing Data in Wasit, Iraq. Geomatics and Environmental Engineering. 2021; 15 (3):129-140.
Chicago/Turabian StyleKouther Hasheem Rasn; Qutaiba Abdulwahhab Nsaif; Mudhar A. Al-Obaidi; Yakubu Mandafiya John. 2021. "Designation of Flood Risk Zones Using the Geographic Information System Technique and Remote Sensing Data in Wasit, Iraq." Geomatics and Environmental Engineering 15, no. 3: 129-140.
The preparation of mesoporous silica supported zinc oxide photocatalyst (MS/ZnO) was carried out using the direct and indirect approaches (impregnation) in solvent media and grinding approach (mechanochemical) in a solvent-free media. This showed the dissemination of zinc oxide nanoparticles over mesoporous substrates that associated with the formation of a secondary phase of ZnO crystallites on the mesoporous materials. Consequently, a noticeable reduction of the total surface areas, pore volume and average pore size of mesoporous materials was affirmed due to a combination of ZnO nanoparticles, which entirely investigated via the N2 adsorption and desorption isotherms. In this respect, the efficiency of the photocatalysts was recognized using the photo-degradation reaction of Ibuprofen (IBP) as an assigned model of contaminant. Interestingly, the prepared photocatalysts using grinding approach (the mechanochemical approach, the focus of this research) sustained the best photocatalytic efficacy compared to the old-style wetness impregnation approach. This is also commensurate with a complete dispersion of ZnO on mesoporous material in a solvent-free media. Overall, the recent research has confirmed the merits and flexibility of the grinding approach in the preparation of MS/ZnO photocatalyst that incorporated with an efficient removal of solvent.
Mishal W. Ibrahim; Mudhar A. Al-Obaidi; Hendrik Kosslick; Axel Schulz. Photocatalytic degradation of pharmaceutical pollutants using zinc oxide supported by mesoporous silica. Journal of Sol-Gel Science and Technology 2021, 98, 300 -309.
AMA StyleMishal W. Ibrahim, Mudhar A. Al-Obaidi, Hendrik Kosslick, Axel Schulz. Photocatalytic degradation of pharmaceutical pollutants using zinc oxide supported by mesoporous silica. Journal of Sol-Gel Science and Technology. 2021; 98 (2):300-309.
Chicago/Turabian StyleMishal W. Ibrahim; Mudhar A. Al-Obaidi; Hendrik Kosslick; Axel Schulz. 2021. "Photocatalytic degradation of pharmaceutical pollutants using zinc oxide supported by mesoporous silica." Journal of Sol-Gel Science and Technology 98, no. 2: 300-309.
Reverse osmosis (RO) process is progressively engaged in various industrial applications as a promising separation process in favour of classical methods. In this study, an earlier one-dimensional distributed model of RO process, developed by the author, is used to simulate the transport phenomena of phenol removal. The proposed model represented the process parameters as a function of longitudinal variation along the x-coordinate of feed side. The transport parameters of the membrane are optimised by the gEST parameter estimation tool of gPROMS. The model is verified against phenol removal experimental data for a pilot-scale spiral wound RO (SWRO) treatment system. The model has been used to explore the effects of key operating parameters on the phenol removal for five feed concentration cases.
Mudhar A. Al-Obaidi; Samir N. Mustafa; Kawther H. Malek. Evaluation of phenol removal via a spiral wound reverse osmosis process with different feed concentrations: simulation study. Water Science and Technology 2020, 82, 1885 -1895.
AMA StyleMudhar A. Al-Obaidi, Samir N. Mustafa, Kawther H. Malek. Evaluation of phenol removal via a spiral wound reverse osmosis process with different feed concentrations: simulation study. Water Science and Technology. 2020; 82 (9):1885-1895.
Chicago/Turabian StyleMudhar A. Al-Obaidi; Samir N. Mustafa; Kawther H. Malek. 2020. "Evaluation of phenol removal via a spiral wound reverse osmosis process with different feed concentrations: simulation study." Water Science and Technology 82, no. 9: 1885-1895.
Desalination has become one of the obvious solutions for the global water crisis due to affording high-quality water from seawater and brackish water resources. As a result, there are continuing efforts being made to improve desalination technologies, especially the one producing high-quantity freshwater, i.e., thermal desalination. This improvement must be accomplished via enhancement of process design through optimization which is implicitly dependent on providing a generic process model. Due to the scarcity of a comprehensive review paper for modeling multi-effect distillation (MED) process, this topic is becoming more important. Therefore, this paper intends to capture the evolution of modeling the forward feed MED (most common type) and shed a light on its branches of steady-state and dynamic modeling. The maturity of the models developed for MED will be thoroughly reviewed to clarify the general efforts made highlighting the advantages and disadvantages. Depending on the outputs of this review, the requirements of process development and emerging challengeable matters of modeling will be specified. This, in turn, would afford a possible improvement strategy to gain a reliable and sustainable thermal desalination process.
Omer Mohamed Abubaker Al-Hotmani; Mudhar Abdul Alwahab Al-Obaidi; Yakubu Mandafiya John; Raj Patel; Iqbal M Mujtaba. Scope and Limitations of the Mathematical Models Developed for the Forward Feed Multi-Effect Distillation Process—A Review. Processes 2020, 8, 1174 .
AMA StyleOmer Mohamed Abubaker Al-Hotmani, Mudhar Abdul Alwahab Al-Obaidi, Yakubu Mandafiya John, Raj Patel, Iqbal M Mujtaba. Scope and Limitations of the Mathematical Models Developed for the Forward Feed Multi-Effect Distillation Process—A Review. Processes. 2020; 8 (9):1174.
Chicago/Turabian StyleOmer Mohamed Abubaker Al-Hotmani; Mudhar Abdul Alwahab Al-Obaidi; Yakubu Mandafiya John; Raj Patel; Iqbal M Mujtaba. 2020. "Scope and Limitations of the Mathematical Models Developed for the Forward Feed Multi-Effect Distillation Process—A Review." Processes 8, no. 9: 1174.
Multieffect distillation with thermal vapour compression (MED–TVC) is one of the most attractive thermal desalination technologies for the production of freshwater. Several mathematical models were presented in the open literature to analyse the steady‐state performance of such process. However, these models have several limitations and assumptions. Therefore, there remains the challenge of having a reliable model to accurately predict the performance of the MED process. Thus, this research attempts to resolve this challenge by rectifying the shortcomings of the models found in the literature and create a new one. The robustness of the developed model is evaluated against the actual data of Umm Al‐Nar commercial plant situated in UAE. In seawater desalinisation, a large amount of high‐salinity stream (brine) is rejected back into the sea. This paper investigates the influence of the rejected (exit) brine temperature on the system performance parameters of MED–TVC process. Specifically, these parameters are considered as total heat consumption, gain output ratio, freshwater production, heat transfer area and performance ratio. Also, the particular parameters of TVC section of the entrainment ratio, compression ratio and expansion ratio are also addressed. Moreover, a critical evaluation of the influence of the rejected brine temperature on the seawater is also embedded.
Saleh K. Buabbas; Mudhar A. Al‐Obaidi; Iqbal M. Mujtaba. A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts. Asia-Pacific Journal of Chemical Engineering 2020, 15, 1 .
AMA StyleSaleh K. Buabbas, Mudhar A. Al‐Obaidi, Iqbal M. Mujtaba. A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts. Asia-Pacific Journal of Chemical Engineering. 2020; 15 (6):1.
Chicago/Turabian StyleSaleh K. Buabbas; Mudhar A. Al‐Obaidi; Iqbal M. Mujtaba. 2020. "A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts." Asia-Pacific Journal of Chemical Engineering 15, no. 6: 1.
In recent times two or more desalination processes have been combined to form integrated systems that have been widely used to resolve the limitations of individual processes as well as producing high performance systems. In this regard, a simple integrated system of the Multi Effect Distillation (MED)/Thermal Vapour Compression (TVC) and Permeate Reprocessing Reverse Osmosis (PRRO) process was developed by the same authors and confirmed its validity after a comparison study against other developed configurations. However, this design has a considerable amount of retentate flowrate and low productivity. To resolve this issue, two novel designs of MED and double reverse osmosis (RO) processes including Permeate and Retentate Reprocessing designs (PRRP and RRRO) are developed and modelled in this paper. To systematically assess the consistency of the presented designs, the performance indicators of the novel designs are compared against previous simple designs of MED and PRRO processes at a specified set of operating conditions. Results show the superiority of the integrated MED and double permeate reprocessing design. This has specifically achieved both economic and environmental advantages where total productivity is increased by around 9% and total retentate flowrate (disposed to water bodies) is reduced by 5% with a marginally reduced energy consumption.
Omer Mohamed Abubaker Al-Hotmani; Mudhar Abdul Alwahab Al-Obaidi; Yakubu Mandafiya John; Raj Patel; Iqbal Mhohammed Mujtaba. An Innovative Design of an Integrated MED-TVC and Reverse Osmosis System for Seawater Desalination: Process Explanation and Performance Evaluation. Processes 2020, 8, 607 .
AMA StyleOmer Mohamed Abubaker Al-Hotmani, Mudhar Abdul Alwahab Al-Obaidi, Yakubu Mandafiya John, Raj Patel, Iqbal Mhohammed Mujtaba. An Innovative Design of an Integrated MED-TVC and Reverse Osmosis System for Seawater Desalination: Process Explanation and Performance Evaluation. Processes. 2020; 8 (5):607.
Chicago/Turabian StyleOmer Mohamed Abubaker Al-Hotmani; Mudhar Abdul Alwahab Al-Obaidi; Yakubu Mandafiya John; Raj Patel; Iqbal Mhohammed Mujtaba. 2020. "An Innovative Design of an Integrated MED-TVC and Reverse Osmosis System for Seawater Desalination: Process Explanation and Performance Evaluation." Processes 8, no. 5: 607.
The reverse osmosis (RO) process is one of the best desalination methods, using membranes to reject several impurities from seawater and brackish water. To systematically perceive the transport phenomena of solvent and solutes via the membrane texture, several mathematical models have been developed. To date, a large number of simulation and optimisation studies have been achieved to gauge the influence of control variables on the performance indexes, to adjust the key variables at optimum values, and to realise the optimum production indexes. This paper delivers an intensive review of the successful models of the RO process and both simulation and optimisation studies carried out on the basis of the models developed. In general, this paper investigates the scope and limitations of the RO process, as well as proving the maturity of the associated perspective methodologies.
Alanood A. Alsarayreh; Mudhar A. Al-Obaidi; Raj Patel; Iqbal M. Mujtaba. Scope and Limitations of Modelling, Simulation, and Optimisation of a Spiral Wound Reverse Osmosis Process-Based Water Desalination. Processes 2020, 8, 573 .
AMA StyleAlanood A. Alsarayreh, Mudhar A. Al-Obaidi, Raj Patel, Iqbal M. Mujtaba. Scope and Limitations of Modelling, Simulation, and Optimisation of a Spiral Wound Reverse Osmosis Process-Based Water Desalination. Processes. 2020; 8 (5):573.
Chicago/Turabian StyleAlanood A. Alsarayreh; Mudhar A. Al-Obaidi; Raj Patel; Iqbal M. Mujtaba. 2020. "Scope and Limitations of Modelling, Simulation, and Optimisation of a Spiral Wound Reverse Osmosis Process-Based Water Desalination." Processes 8, no. 5: 573.
In this research, the effect of operating parameters on the fresh water production cost of hybrid Multi Effect Distillation (MED) and Reverse Osmosis (RO) system is investigated. To achieve this, an earlier comprehensive model developed by the authors for MED + RO system is combined with two full-scale cost models of MED and RO processes collected from the literature. Using the economic model, the variation of the overall fresh water cost with respect to some operating conditions, namely steam temperature and steam flow rate for the MED process and inlet pressure and flow rate for the RO process, is accurately investigated. Then, the hybrid process model is incorporated into a single-objective non-linear optimisation framework to minimise the fresh water cost by finding the optimal values of the above operating conditions. The optimisation results confirm the economic feasibility of the proposed hybrid seawater desalination plant.
Mudhar Al-Obaidi; G. Filippini; F. Manenti; I.M. Mujtaba. Cost evaluation and optimisation of hybrid multi effect distillation and reverse osmosis system for seawater desalination. Desalination 2019, 456, 136 -149.
AMA StyleMudhar Al-Obaidi, G. Filippini, F. Manenti, I.M. Mujtaba. Cost evaluation and optimisation of hybrid multi effect distillation and reverse osmosis system for seawater desalination. Desalination. 2019; 456 ():136-149.
Chicago/Turabian StyleMudhar Al-Obaidi; G. Filippini; F. Manenti; I.M. Mujtaba. 2019. "Cost evaluation and optimisation of hybrid multi effect distillation and reverse osmosis system for seawater desalination." Desalination 456, no. : 136-149.
Natural draft cooling towers are subjected to dynamic air temperature and humidity ratio of air throughout the day. Their performances based on steady state model is restricted to single air temperature and humidity ratio of air values and thus are not accurate. In this work, a dynamic model for a natural draft cooling tower is developed. Air temperature and relative humidity data for Johannesburg were acquired to develop dynamic correlations for these two parameters and are embedded in the process model together with the dynamic model of the collection basin of the tower. A simple algorithm is proposed to solve the resulting boundary value problem. Finally, the common perception that seawater/river water should be used instead of freshwater as cooling medium is tested via optimisation where the operating costs of the process for two cooling mediums is minimised. The freshwater has been found to be cost effective cooling medium.
A. Dhorat; Mudhar Al-Obaidi; I.M. Mujtaba. Dynamic modelling and operational optimisation of natural draft cooling towers. Thermal Science and Engineering Progress 2018, 9, 30 -43.
AMA StyleA. Dhorat, Mudhar Al-Obaidi, I.M. Mujtaba. Dynamic modelling and operational optimisation of natural draft cooling towers. Thermal Science and Engineering Progress. 2018; 9 ():30-43.
Chicago/Turabian StyleA. Dhorat; Mudhar Al-Obaidi; I.M. Mujtaba. 2018. "Dynamic modelling and operational optimisation of natural draft cooling towers." Thermal Science and Engineering Progress 9, no. : 30-43.
Reverse Osmosis (RO) is one of the most widely used technologies for wastewater treatment for the removal of toxic impurities, such as phenol and phenolic compounds from industrial effluents. In this research, performance of multi-stage RO wastewater treatment system is evaluated for the removal of chlorophenol from wastewater using model-based techniques. A number of alternative configurations with recycling of permeate, retentate, and permeate-retentate streams are considered. The performance is measured in terms of total recovery rate, permeate product concentration, overall chlorophenol rejection and energy consumption and the effect of a number of operating parameters on the overall performance of the alternative configurations are evaluated. The results clearly show that the permeate recycling scheme at fixed plant feed flow rate can remarkably improve the final chlorophenol concentration of the product despite a reduction in the total recovery rate.
M.A. Al-Obaidi; C. Kara-Zaïtri; I.M. Mujtaba. Performance evaluation of multi-stage reverse osmosis process with permeate and retentate recycling strategy for the removal of chlorophenol from wastewater. Computers & Chemical Engineering 2018, 121, 12 -26.
AMA StyleM.A. Al-Obaidi, C. Kara-Zaïtri, I.M. Mujtaba. Performance evaluation of multi-stage reverse osmosis process with permeate and retentate recycling strategy for the removal of chlorophenol from wastewater. Computers & Chemical Engineering. 2018; 121 ():12-26.
Chicago/Turabian StyleM.A. Al-Obaidi; C. Kara-Zaïtri; I.M. Mujtaba. 2018. "Performance evaluation of multi-stage reverse osmosis process with permeate and retentate recycling strategy for the removal of chlorophenol from wastewater." Computers & Chemical Engineering 121, no. : 12-26.
The coupling of thermal (multi stage flash, MSF) and membrane processes (reverse osmosis, RO) in desalination systems has been widely presented in the literature to achieve an improvement of performance compared to an individual process. However, very little study has been made to the combined multi effect distillation (MED) and reverse osmosis (RO) processes. Therefore, this research investigates several design options of MED with thermal vapor compression (MED_TVC) coupled with RO system. To achieve this aim, detailed mathematical models for the two processes are developed, which are independently validated against the literature. Then, the integrated model is used to investigate the performance of several configurations of the MED_TVC and RO processes in the hybrid system. The performance indicators include the fresh water productivity, energy consumption, fresh water purity, and recovery ratio. Basically, the sensitivity analysis for each configuration is conducted with respect to seawater conditions and steam supply variation. Most importantly, placing the RO membrane process upstream in the hybrid system generates the overall best configuration in terms of the quantity and quality of fresh water produced. This is attributed to acquiring the best recovery ratio and lower energy consumption over a wide range of seawater salinity.
G. Filippini; Mudhar Al-Obaidi; F. Manenti; I.M. Mujtaba. Performance analysis of hybrid system of multi effect distillation and reverse osmosis for seawater desalination via modelling and simulation. Desalination 2018, 448, 21 -35.
AMA StyleG. Filippini, Mudhar Al-Obaidi, F. Manenti, I.M. Mujtaba. Performance analysis of hybrid system of multi effect distillation and reverse osmosis for seawater desalination via modelling and simulation. Desalination. 2018; 448 ():21-35.
Chicago/Turabian StyleG. Filippini; Mudhar Al-Obaidi; F. Manenti; I.M. Mujtaba. 2018. "Performance analysis of hybrid system of multi effect distillation and reverse osmosis for seawater desalination via modelling and simulation." Desalination 448, no. : 21-35.
Mudhar Al-Obaidi; J-P. Li; S. Alsadaie; Chakib Kara-Zaïtri; I.M. Mujtaba. Modelling and optimisation of a multistage Reverse Osmosis processes with permeate reprocessing and recycling for the removal of N-nitrosodimethylamine from wastewater using Species Conserving Genetic Algorithms. Chemical Engineering Journal 2018, 350, 824 -834.
AMA StyleMudhar Al-Obaidi, J-P. Li, S. Alsadaie, Chakib Kara-Zaïtri, I.M. Mujtaba. Modelling and optimisation of a multistage Reverse Osmosis processes with permeate reprocessing and recycling for the removal of N-nitrosodimethylamine from wastewater using Species Conserving Genetic Algorithms. Chemical Engineering Journal. 2018; 350 ():824-834.
Chicago/Turabian StyleMudhar Al-Obaidi; J-P. Li; S. Alsadaie; Chakib Kara-Zaïtri; I.M. Mujtaba. 2018. "Modelling and optimisation of a multistage Reverse Osmosis processes with permeate reprocessing and recycling for the removal of N-nitrosodimethylamine from wastewater using Species Conserving Genetic Algorithms." Chemical Engineering Journal 350, no. : 824-834.
The modern industrialized world is generating a huge amount of wastewater containing a variety of micro-pollutants which is discharged into rivers and oceans leading to disruption of the biological ecosystem. The reverse osmosis (RO) process is one of the most promising technologies to produce high-quality recycling water at a reasonable cost. In this work we develop a new mathematical model to predict the performance of the RO process for the removal of several organic and non-organic compounds from wastewater simultaneously. The realistic operating conditions ensuring high rejection of multicompounds is explored via the simulation of the RO process first. The model is then used for optimising the operating conditions of the process while maximising the rejection and permeate recovery.
Mudhar A. Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. Simultaneous Removal of Organic Compounds from Wastewater Using Reverse Osmosis Process: Modelling, Simulation, and Optimisation. 13th International Symposium on Process Systems Engineering (PSE 2018) 2018, 44, 1867 -1872.
AMA StyleMudhar A. Al-Obaidi, Chakib Kara-Zaïtri, Iqbal M. Mujtaba. Simultaneous Removal of Organic Compounds from Wastewater Using Reverse Osmosis Process: Modelling, Simulation, and Optimisation. 13th International Symposium on Process Systems Engineering (PSE 2018). 2018; 44 ():1867-1872.
Chicago/Turabian StyleMudhar A. Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. 2018. "Simultaneous Removal of Organic Compounds from Wastewater Using Reverse Osmosis Process: Modelling, Simulation, and Optimisation." 13th International Symposium on Process Systems Engineering (PSE 2018) 44, no. : 1867-1872.
M.A. Al-Obaidi; C. Kara-Zaïtri; I.M. Mujtaba. Performance evaluation of multi-stage and multi-pass reverse osmosis networks for the removal of N-nitrosodimethylamine -D6 (NDMA) from wastewater using model-based techniques. Journal of Environmental Chemical Engineering 2018, 6, 4797 -4808.
AMA StyleM.A. Al-Obaidi, C. Kara-Zaïtri, I.M. Mujtaba. Performance evaluation of multi-stage and multi-pass reverse osmosis networks for the removal of N-nitrosodimethylamine -D6 (NDMA) from wastewater using model-based techniques. Journal of Environmental Chemical Engineering. 2018; 6 (4):4797-4808.
Chicago/Turabian StyleM.A. Al-Obaidi; C. Kara-Zaïtri; I.M. Mujtaba. 2018. "Performance evaluation of multi-stage and multi-pass reverse osmosis networks for the removal of N-nitrosodimethylamine -D6 (NDMA) from wastewater using model-based techniques." Journal of Environmental Chemical Engineering 6, no. 4: 4797-4808.
Reverse Osmosis (RO) processes are readily used for removing pollutants, such as dimethylphenol from wastewater. A number of operating parameters must be controlled within the process constraints to achieve an efficient removal of such pollutants. Understanding the process dynamics is absolutely essential and is a pre-step for designing any effective controllers for any process. In this work, a detailed distributed two-dimensional dynamic (x and y dimensions and time) model for a spiral-wound RO process is developed extending the 2-D steady state model of the authors published earlier. The model is used to capture the dynamics of the RO process for the removal of dimethylphenol from wastewater. The performance of the 2-D model is compared with that obtained using 1-D dynamic model before the model is being used to investigate the performance of the RO process for a range of operating conditions.
Mudhar Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. Simulation and sensitivity analysis of spiral wound reverse osmosis process for the removal of dimethylphenol from wastewater using 2-D dynamic model. Journal of Cleaner Production 2018, 193, 140 -157.
AMA StyleMudhar Al-Obaidi, Chakib Kara-Zaïtri, Iqbal M. Mujtaba. Simulation and sensitivity analysis of spiral wound reverse osmosis process for the removal of dimethylphenol from wastewater using 2-D dynamic model. Journal of Cleaner Production. 2018; 193 ():140-157.
Chicago/Turabian StyleMudhar Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. 2018. "Simulation and sensitivity analysis of spiral wound reverse osmosis process for the removal of dimethylphenol from wastewater using 2-D dynamic model." Journal of Cleaner Production 193, no. : 140-157.
The implementation of Reverse Osmosis (RO) technology is noticeably increased to produce freshwater from brackish and seawater resources. In this work, performance analysis of a multistage multi pass medium-sized spiral wound brackish water RO (BWRO) desalination plant (1200 m3/day) of Arab Potash Company (APC) located in Jordan is evaluated using modelling and simulation. For this purpose, a mathematical model for the spiral wound RO process based on the principles of solution diffusion model is developed. The model is then used to simulate the operating conditions of low-salinity brackish water RO (BWRO) desalination plant. The results obtained are then compared against the real industrial data of BWRO desalination plant of APC which shows a high-level of consistency. Finally, the model is used to analyse the impact of the operating parameters such as salinity, pressure, temperature, and flow rate on the plant performance. The sensitivity analysis confirms that both feed flow rate and operating pressure as the critical parameters that positively affect the product salinity.
Mudhar Al-Obaidi; A.A. Alsarayreh; A.M. Al-Hroub; S. Alsadaie; I.M. Mujtaba. Performance analysis of a medium-sized industrial reverse osmosis brackish water desalination plant. Desalination 2018, 443, 272 -284.
AMA StyleMudhar Al-Obaidi, A.A. Alsarayreh, A.M. Al-Hroub, S. Alsadaie, I.M. Mujtaba. Performance analysis of a medium-sized industrial reverse osmosis brackish water desalination plant. Desalination. 2018; 443 ():272-284.
Chicago/Turabian StyleMudhar Al-Obaidi; A.A. Alsarayreh; A.M. Al-Hroub; S. Alsadaie; I.M. Mujtaba. 2018. "Performance analysis of a medium-sized industrial reverse osmosis brackish water desalination plant." Desalination 443, no. : 272-284.
In this work, a one-dimensional model of a low-pressure reverse osmosis (LPRO) membrane process has been developed using an augmented model previously developed by the same authors to analyse the rejection of N-nitrosamine from wastewater. The model, based on the principles of the solution-diffusion coupled with the concentration polarization theory, is validated using experimental data of N-nitrosamine rejection from the literature for three different types of membranes in an RO process. Finally, detailed simulation of the LPRO process is carried out for variety of operating conditions such as inlet feed flow rate, pressure, feed concentration, and temperature.
Mudhar A. Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. Modeling the Performance of Low Pressure Reverse Osmosis Membrane System for N-nitrosamine Rejection. 16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering 2018, 43, 19 -24.
AMA StyleMudhar A. Al-Obaidi, Chakib Kara-Zaïtri, Iqbal M. Mujtaba. Modeling the Performance of Low Pressure Reverse Osmosis Membrane System for N-nitrosamine Rejection. 16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering. 2018; 43 ():19-24.
Chicago/Turabian StyleMudhar A. Al-Obaidi; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. 2018. "Modeling the Performance of Low Pressure Reverse Osmosis Membrane System for N-nitrosamine Rejection." 16th European Symposium on Computer Aided Process Engineering and 9th International Symposium on Process Systems Engineering 43, no. : 19-24.
I.M. Mujtaba; M.A. Al-Obaidi; C. Kara-Zaitri. Applications of Reverse Osmosis for the Removal of Organic Compounds from Wastewater: A state-of-the-art from Process Modelling to Simulation. Thermoset Composites 2018, 32, 35 -92.
AMA StyleI.M. Mujtaba, M.A. Al-Obaidi, C. Kara-Zaitri. Applications of Reverse Osmosis for the Removal of Organic Compounds from Wastewater: A state-of-the-art from Process Modelling to Simulation. Thermoset Composites. 2018; 32 ():35-92.
Chicago/Turabian StyleI.M. Mujtaba; M.A. Al-Obaidi; C. Kara-Zaitri. 2018. "Applications of Reverse Osmosis for the Removal of Organic Compounds from Wastewater: A state-of-the-art from Process Modelling to Simulation." Thermoset Composites 32, no. : 35-92.
Phenol and phenolic derivatives found in different industrial effluents are highly toxic and extremely harmful to human and the aquatic ecosystem. In the past, trickle bed reactor (TBR), reverse osmosis (RO) and other processes have been used to remove phenol from wastewater. However, each of these technologies has limitations in terms of the phenol concentration in the feed water and the efficiency of phenol rejection rate. In this work, an integrated hybrid TBR-RO process for removing high concentration phenol from wastewater is suggested and model-based simulation of the process is presented to evaluate the performance of the process. The models for both TBR and RO processes were independently validated against experimental data from the literature before coupling together to make the hybrid process. The results clearly show that the combined process significantly improves the rejection rate of phenol compared to that obtained via the individual processes.
M.A. Al-Obaidi; A.T. Jarullah; C Kara-Zaïtri; I.M. Mujtaba. Simulation of hybrid trickle bed reactor–reverse osmosis process for the removal of phenol from wastewater. Computers & Chemical Engineering 2018, 113, 264 -273.
AMA StyleM.A. Al-Obaidi, A.T. Jarullah, C Kara-Zaïtri, I.M. Mujtaba. Simulation of hybrid trickle bed reactor–reverse osmosis process for the removal of phenol from wastewater. Computers & Chemical Engineering. 2018; 113 ():264-273.
Chicago/Turabian StyleM.A. Al-Obaidi; A.T. Jarullah; C Kara-Zaïtri; I.M. Mujtaba. 2018. "Simulation of hybrid trickle bed reactor–reverse osmosis process for the removal of phenol from wastewater." Computers & Chemical Engineering 113, no. : 264-273.