This page has only limited features, please log in for full access.

Prof. Iqbal Mujtaba
Department of Chemical Engineering, University of Bradford, Bradford, West Yorkshire, BD7 1DP, UK

Basic Info


Research Keywords & Expertise

0 Dynamic Modelling
0 Hydrotreating
0 Optimization
0 Wastewater Treatment
0 Refinery

Fingerprints

Optimization
Batch distillation
Wastewater Treatment
Batch reactor
Refinery
Dynamic Modelling
Hydrotreating
Fluidised bed reactor

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

Iqbal M. Mujtaba is a Professor of Computational Process Engineering and is the Associate Dean (Learning, Teaching & Quality). He is a Chartered Chemical Engineer, a Chartered Scientist and is a Fellow of the IChemE. He is currently an executive member of (a) IChemE Computer Aided Process Engineering Subject Group (Secretary 2000-2010; Chair 2015 onwards), (b) the European Committee for Computers in Chemical Engineering Education (Secretary 2007-2010; Chair 2010-2013) and (c) Chair of BUET Chemical Engineering Forum, Bangladesh (2007 onwards). He was the Head of the School of Engineering from 2016 to 2018. He led the Mechanical and Process Engineering research group in the School of Engineering from 2010 to 2014. Professor Mujtaba was the member of the University Senate from 2002 to 2010, and then from 2018 onwards and was a member of a number of committees including University Equality & Diversity committee, University Research Degree committee (Deputy Chair), School Board and School Executive Committee, School HR committee (Chair). He is currently the Associate Editor for South African Journal for Chemical Engineering, Editorial Board Member for Processes (open access journal), Energies (open access journal), Desalination Journal, Asia Pacific Journal of Chemical Engineering, BMC Chemical Engineering (open access).

Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 04 August 2021 in Membranes
Reads 0
Downloads 0

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.

ACS Style

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 Style

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 (8):595.

Chicago/Turabian Style

Mudhar 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.

Book chapter
Published: 18 July 2021 in 13th International Symposium on Process Systems Engineering (PSE 2018)
Reads 0
Downloads 0

Due to depletion of freshwater resources in arid and semi-arid regions accompanied with an increase in water demand, the focus is on improving thermal desalination technologies such as multi effect distillation (MED) that are energy intensive. Undoubtedly, this technology plays an important role in generating high quantity of freshwater from saline water resources. To maintain a sustainable seawater desalination technology, this research suggests a new hybrid system of 10 effects of MED and a farm of 100 wind turbines to be instilled in Al-Shuaibah Power Plant located 103 km south of Jedda in the Kingdom of Saudi Arabia. To carry out this proposal, a generic model for MED developed by the same authors and a set of model equations of wind power turbine are embedded in a mathematical framework. The developed framework is then used to carry out a simulation for a given set of seawater characteristics, and input design parameters at different months of the year 2019. The study investigates the average monthly saving of power for the proposed hybrid system compared to a single MED system. It is revealed that the wind turbines can save around 43% of electrical power of MED system in June 2019 based on the mean monthly wind speed.

ACS Style

O.M.A. Al-Hotmani; Mudhar.A. Al-Obaidi; Y.M. John; Raj. Patel; Iqbal M. Mujtaba. An integrated system of multi effect distillation and wind power system - Evaluation of total energy saving. 13th International Symposium on Process Systems Engineering (PSE 2018) 2021, 50, 81 -86.

AMA Style

O.M.A. Al-Hotmani, Mudhar.A. Al-Obaidi, Y.M. John, Raj. Patel, Iqbal M. Mujtaba. An integrated system of multi effect distillation and wind power system - Evaluation of total energy saving. 13th International Symposium on Process Systems Engineering (PSE 2018). 2021; 50 ():81-86.

Chicago/Turabian Style

O.M.A. Al-Hotmani; Mudhar.A. Al-Obaidi; Y.M. John; Raj. Patel; Iqbal M. Mujtaba. 2021. "An integrated system of multi effect distillation and wind power system - Evaluation of total energy saving." 13th International Symposium on Process Systems Engineering (PSE 2018) 50, no. : 81-86.

Journal article
Published: 15 July 2021 in Computers & Chemical Engineering
Reads 0
Downloads 0

Phenol is one of most toxic and harmful pollutants in industrial wastewater streams, the removal of which is therefore of critical importance. The use of reverse osmosis (RO) systems as a means of treating wastewater is continuously growing. This research investigates the effect of operating parameters on the performance of five different multistage RO configurations coupled with a trickle bed reactor (TBR) using model-based simulation. The results were compared, and an analysis was then performed to identify which hybrid TBR and multistage RO arrangement rejected the most phenol content. The basis for comparison was four performance metrics of permeate concentration, rejection, recovery, and specific energy. The study found that the flow rate and concentration have little effect on the operation unless there is a concurrent increase of both. It was also found that the four-performance metrics used were interlinked and affect the quality and quantity of the final freshwater product.

ACS Style

Jude S. Al-Huwaidi; Mudhar A. Al-Obaidi; Aysar T. Jarullah; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. Modeling and simulation of a hybrid system of trickle bed reactor and multistage reverse osmosis process for the removal of phenol from wastewater. Computers & Chemical Engineering 2021, 153, 107452 .

AMA Style

Jude S. Al-Huwaidi, Mudhar A. Al-Obaidi, Aysar T. Jarullah, Chakib Kara-Zaïtri, Iqbal M. Mujtaba. Modeling and simulation of a hybrid system of trickle bed reactor and multistage reverse osmosis process for the removal of phenol from wastewater. Computers & Chemical Engineering. 2021; 153 ():107452.

Chicago/Turabian Style

Jude S. Al-Huwaidi; Mudhar A. Al-Obaidi; Aysar T. Jarullah; Chakib Kara-Zaïtri; Iqbal M. Mujtaba. 2021. "Modeling and simulation of a hybrid system of trickle bed reactor and multistage reverse osmosis process for the removal of phenol from wastewater." Computers & Chemical Engineering 153, no. : 107452.

Journal article
Published: 24 May 2021 in Cleaner Engineering and Technology
Reads 0
Downloads 0

The Reverse Osmosis (RO) input parameters have key roles in mass transport and performance indicators. Several studies can be found in open literature. However, an experimental research on evaluating the brackish water RO input parameters influence on the performance metrics with justifying the interference between them via a robust model has not been addressed yet. This paper aims to design, construct, and experimentally evaluate the performance of a 50 m3/d RO pilot-plant to desalinate brackish water in Shahid Chamran University of Ahvaz, Iran. Water samples with various salinity ranging from 1000 to 5000 ppm were fed to a semi-permeable membrane under variable operating pressures from 5 to 13 bar. By evaluating permeate flux and brine flowrate, permeate and brine salinities, membrane water recovery, and salt rejection, some logical relations were derived. The results indicated that the performance of an RO unit is largely dependent on feed pressure and feed salinity. At a fixed feed concentration, an almost linear relationship was found to relate feed pressure and both permeate and brine flowrates. Statistically, it was found that 13 bar feed pressure results in a maximum salt rejection of 98.8% at a minimum permeate concentration of 12 ppm. Moreover, 73.3% reduction in permeate salinity and 30.8% increase in brine salinity are reported when feed pressure increases from 5 to 13 bar. Finally, it is concluded that the water transport coefficient is a function of feed pressure, salinity, and temperature, which is experimentally estimated to be 2.8552 L/(m2 h bar).

ACS Style

Mostafa Ansari; Mudhar A. Al- Obaidi; Zeinab Hadadian; Morteza Moradi; Ali Haghighi; Iqbal M. Mujtaba. Performance evaluation of a brackish water reverse osmosis pilot-plant desalination process under different operating conditions: Experimental study. Cleaner Engineering and Technology 2021, 4, 100134 .

AMA Style

Mostafa Ansari, Mudhar A. Al- Obaidi, Zeinab Hadadian, Morteza Moradi, Ali Haghighi, Iqbal M. Mujtaba. Performance evaluation of a brackish water reverse osmosis pilot-plant desalination process under different operating conditions: Experimental study. Cleaner Engineering and Technology. 2021; 4 ():100134.

Chicago/Turabian Style

Mostafa Ansari; Mudhar A. Al- Obaidi; Zeinab Hadadian; Morteza Moradi; Ali Haghighi; Iqbal M. Mujtaba. 2021. "Performance evaluation of a brackish water reverse osmosis pilot-plant desalination process under different operating conditions: Experimental study." Cleaner Engineering and Technology 4, no. : 100134.

Journal article
Published: 18 April 2021 in Separation and Purification Technology
Reads 0
Downloads 0

Synthesis of methyl palmitate (MP) has not been considered in the past using a reactive distillation process (continuous or batch) due to the challenge of keeping the reactants palmitic acid (PA) and methanol (MeOH) together in the reactive zone. MeOH, being the lightest in the reaction mixture, travels up the distillation column as distillation proceeds and will be removed from the system via the distillate in a conventional batch reactive distillation (CBRD) column and thus will limit the conversion of PA. Therefore, in this work semi-batch reactive distillation (SBRD) column is proposed where additional methanol will be fed at the bottom of the column in a continuous mode allowing the chemical reaction to continue. However, as water (H2O) is one of the reaction products and is the second lightest component in the mixture, it will travel up the column next and will be removed in the distillate tank. Also due to wide difference in the boiling points of the reaction products and due to diminishing amount of water in the reboiler, the backward reaction will not be a dominating factor and therefore ignored in this work. With this backdrop, optimal performance of the SBRD column is evaluated in terms of conversion of PA to MP and energy consumption via minimization of the operating batch time for a wide range on MP purity.

ACS Style

Dhia Y. Aqar; Ammar S. Abbas; Raj Patel; Iqbal M. Mujtaba. Optimisation of semi-batch reactive distillation column for the synthesis of methyl palmitate. Separation and Purification Technology 2021, 270, 118776 .

AMA Style

Dhia Y. Aqar, Ammar S. Abbas, Raj Patel, Iqbal M. Mujtaba. Optimisation of semi-batch reactive distillation column for the synthesis of methyl palmitate. Separation and Purification Technology. 2021; 270 ():118776.

Chicago/Turabian Style

Dhia Y. Aqar; Ammar S. Abbas; Raj Patel; Iqbal M. Mujtaba. 2021. "Optimisation of semi-batch reactive distillation column for the synthesis of methyl palmitate." Separation and Purification Technology 270, no. : 118776.

Editorial
Published: 18 March 2021 in Processes
Reads 0
Downloads 0

Water scarcity due to the ever-increasing worldwide demand and climate change is one of the greatest hurdles of our time

ACS Style

Viviani Onishi; Iqbal Mujtaba. Special Issue “Design, Control and Optimization of Desalination Processes”. Processes 2021, 9, 541 .

AMA Style

Viviani Onishi, Iqbal Mujtaba. Special Issue “Design, Control and Optimization of Desalination Processes”. Processes. 2021; 9 (3):541.

Chicago/Turabian Style

Viviani Onishi; Iqbal Mujtaba. 2021. "Special Issue “Design, Control and Optimization of Desalination Processes”." Processes 9, no. 3: 541.

Original article
Published: 21 February 2021 in Applied Nanoscience
Reads 0
Downloads 0

This study investigated adsorption kinetics, adsorption equilibrium, and adsorption isotherm of three dyes [i.e., methylene blue (MB), rhodamine-B (RB), and safranin T (ST)] onto polyacrylonitrile (PAN) and ethanolamine (EA) grafted PAN nanofibers (NFs) membranes (EA-g-PAN). The membranes were characterized by field emission scanning electron microscopy (FE-SEM), Fourier-transform infrared spectroscopy (FT-IR) spectroscopy, and Brunauer–Emmet–Teller (BET). FE-SEM showed a smooth morphology for the NFs before and after grafting, while FT-IR confirmed EA grafting into the nitrile group of PAN. The grafting percentage with no change in the physical nature of the membrane was 12.18%. The nitrogen adsorption–desorption isotherms for PAN and EA-g-PAN NFs membranes were similar and classified as a Type IV according to the International Union of Pure and Applied Chemistry. The surface area, pore-volume, and pore size of the EA-g-PAN increased to 21.36 m2 g−1, 0.16 cm3 g−1, and 304.93 Å, respectively. The pores were cylindrical mesopores with bimodal openings, which means that pores were open at both ends. The adsorption of the MB, RB, and ST dyes onto the PAN and EA-g-PAN NFs membranes leveled off at ~ 60 min. The adsorption kinetics showed good fitting to pseudo-second-order kinetic model and multi-step diffusion process. The order of the dye adsorption was PAN < EA-g-PAN. The data were fitted to Langmuir and Freundlich models. The correlation coefficient (r2) for Langmuir ranged from 0.940 to 0.995, whereas that for Freundlich ranged from 0.941 to 0.998. After adsorption, FTIR only showed hydrogen bonding between the dyes and the membrane. The reusability experiments showed max desorption for MB (94%), RB (92%), and ST (85%). The EA-g-PAN NFs membrane showed potential for the removal of organic pollutants from the environment.

ACS Style

Fahad A. Alabduljabbar; Sajjad Haider; Abdulaziz A. Alghyamah; Adnan Haider; Rawaiz Khan; Waheed A. Almasry; Raj Patel; Iqbal M. Mujtaba; Fekri Abdulraqeb Ahmed Ali. Ethanol amine functionalized electrospun nanofibers membrane for the treatment of dyes polluted wastewater. Applied Nanoscience 2021, 1 -14.

AMA Style

Fahad A. Alabduljabbar, Sajjad Haider, Abdulaziz A. Alghyamah, Adnan Haider, Rawaiz Khan, Waheed A. Almasry, Raj Patel, Iqbal M. Mujtaba, Fekri Abdulraqeb Ahmed Ali. Ethanol amine functionalized electrospun nanofibers membrane for the treatment of dyes polluted wastewater. Applied Nanoscience. 2021; ():1-14.

Chicago/Turabian Style

Fahad A. Alabduljabbar; Sajjad Haider; Abdulaziz A. Alghyamah; Adnan Haider; Rawaiz Khan; Waheed A. Almasry; Raj Patel; Iqbal M. Mujtaba; Fekri Abdulraqeb Ahmed Ali. 2021. "Ethanol amine functionalized electrospun nanofibers membrane for the treatment of dyes polluted wastewater." Applied Nanoscience , no. : 1-14.

Journal article
Published: 20 February 2021 in Computers & Chemical Engineering
Reads 0
Downloads 0

Multi Effect Distillation (MED) and Reverse Osmosis (RO) processes have been extensively used to produce freshwater from seawater resources. amongst many performance indicators, energy consumption of different configuration of hybrid system of MED and RO processes have been analysed in the past. Hybrid MED-RO system is energy intensive and use of fossil fuel can significantly increase the carbon footprint, unless stable renewable energy sources are used. In this work specific energy consumption of a simple hybrid MED-RO system with permeate reprocessing is minimised while optimising a number of operating decision variables using model based optimisation technique. A detailed process model developed earlier by the authors is embedded in the optimisation framework resulting in a constrained Non-linear Programming (NLP) problem. The minimum specific energy consumption achieved in this work is about 18% lower than what is reported in the literature resulting in a significant energy saving and thus carbon footprint.

ACS Style

O.M.A. Al-Hotmani; M.A. Al-Obaidi; Y.M. John; R. Patel; F. Manenti; I.M. Mujtaba. Minimisation of energy consumption via optimisation of a simple hybrid system of multi effect distillation and permeate reprocessing reverse osmosis processes for seawater desalination. Computers & Chemical Engineering 2021, 148, 107261 .

AMA Style

O.M.A. Al-Hotmani, M.A. Al-Obaidi, Y.M. John, R. Patel, F. Manenti, I.M. Mujtaba. Minimisation of energy consumption via optimisation of a simple hybrid system of multi effect distillation and permeate reprocessing reverse osmosis processes for seawater desalination. Computers & Chemical Engineering. 2021; 148 ():107261.

Chicago/Turabian Style

O.M.A. Al-Hotmani; M.A. Al-Obaidi; Y.M. John; R. Patel; F. Manenti; I.M. Mujtaba. 2021. "Minimisation of energy consumption via optimisation of a simple hybrid system of multi effect distillation and permeate reprocessing reverse osmosis processes for seawater desalination." Computers & Chemical Engineering 148, no. : 107261.

Journal article
Published: 16 January 2021 in Desalination
Reads 0
Downloads 0

Brackish water can be considered an important source of fresh water, via desalination, especially for arid districts. Reverse Osmosis (RO) process has been successfully used to produce fresh water from brackish water sources. However, there is still the challenge of improving the performance of multistage RO desalination plants. From the selection of the RO configurations to the selection of the appropriate type of membranes and the operating conditions at the end determines the performance of RO process in terms of recovery, salt rejection, energy consumptions and ultimately the cost of production of freshwater. Using model-based simulation, this work attempts to investigate the most suitable types of membranes for an industrial scale RO plant from a set of different membrane brands that would attain the highest-performance at lowest specific energy consumption (SEC). As a case study, we considered a multistage multi-pass medium-scale RO plant (1200 m3/day) of Arab Potash Company (APC, Jordan) which produces high quality water for the boilers after pre-treatment stage. The simulation results confirmed that employment of the Filmtec BW30LE-440 would increase water recovery by about 22% besides reducing the product salinity and SEC by about 15% and 10%, respectively compared to the existing membrane.

ACS Style

Alanood A. Alsarayreh; Mudhar A. Al-Obaidi; Shekhah K. Farag; Raj Patel; Iqbal M. Mujtaba. Performance evaluation of a medium-scale industrial reverse osmosis brackish water desalination plant with different brands of membranes. A simulation study. Desalination 2021, 503, 114927 .

AMA Style

Alanood A. Alsarayreh, Mudhar A. Al-Obaidi, Shekhah K. Farag, Raj Patel, Iqbal M. Mujtaba. Performance evaluation of a medium-scale industrial reverse osmosis brackish water desalination plant with different brands of membranes. A simulation study. Desalination. 2021; 503 ():114927.

Chicago/Turabian Style

Alanood A. Alsarayreh; Mudhar A. Al-Obaidi; Shekhah K. Farag; Raj Patel; Iqbal M. Mujtaba. 2021. "Performance evaluation of a medium-scale industrial reverse osmosis brackish water desalination plant with different brands of membranes. A simulation study." Desalination 503, no. : 114927.

Journal article
Published: 17 December 2020 in Chemical Engineering Science
Reads 0
Downloads 0

Several new homemade nano-catalysts are prepared here to reduce sulfur compound found in light gas oil (LGO) utilizing the adsorption desulfurization technique. The effect of different support materials (Fe2O3, Cr2O3 and CdO) having the same particle size (20 nm) on the adsorptive desulfurization performance for loading 5% nickel sulfate (5 wt%NiO) as an active component for each catalyst, is studied. Oxidative desulfurization process (ODS) in a novel digital baffle batch reactor (DBBR) is used to evaluate the performance of the catalysts prepared. Moderate operating conditions are employed for the ODS process. The efficient new nano-catalysts with for the removal of sulfur are found to be 93.4%, 85.6% and 62.1% for NiO/Fe2O3, NiO/Cr2O3 and NiO/CdO, respectively at 175 °C, 75 min and 2 ml of H2O2. The best kinetic model and the half-live period for the nano-catalysts related to the relevant reactions have also been investigated here.

ACS Style

Amer T. Nawaf; Hussein H. Hamed; Shymaa Ali Hameed; Aysar T. Jarullah; Layth T. Abdulateef; Iqbal M. Mujtaba. Performance enhancement of adsorption desulfurization process via different new nano-catalysts using digital baffle batch reactor and mathematical modeling. Chemical Engineering Science 2020, 232, 116384 .

AMA Style

Amer T. Nawaf, Hussein H. Hamed, Shymaa Ali Hameed, Aysar T. Jarullah, Layth T. Abdulateef, Iqbal M. Mujtaba. Performance enhancement of adsorption desulfurization process via different new nano-catalysts using digital baffle batch reactor and mathematical modeling. Chemical Engineering Science. 2020; 232 ():116384.

Chicago/Turabian Style

Amer T. Nawaf; Hussein H. Hamed; Shymaa Ali Hameed; Aysar T. Jarullah; Layth T. Abdulateef; Iqbal M. Mujtaba. 2020. "Performance enhancement of adsorption desulfurization process via different new nano-catalysts using digital baffle batch reactor and mathematical modeling." Chemical Engineering Science 232, no. : 116384.

Book chapter
Published: 19 October 2020 in 13th International Symposium on Process Systems Engineering (PSE 2018)
Reads 0
Downloads 0

The Reverse Osmosis (RO) process has been universally employed for the production of potable water from brackish water resources. However, the RO process still operates at an elevated level of an energy consumption, in kWh per m3 of product water, due to the use of high-pressure pumps. In this study, an earlier steady-state operation model developed by the same authors for a medium-scale RO brackish water desalination system of Arab Potash Company (APC) (Jordan) is embedded within an optimisation framework. Typically, the optimisation problem is expressed as a Nonlinear Programming problem to attain the lowest specific energy consumption (objective function), as well as optimising the decision variables of operating flow rate and pressure for a given feed concentration and temperature. Moreover, the optimisation problem has been associated with upper and lower limits of decision variables as characterised by the membrane manufacturer. Also, to quantify the high-standards of filtration process, feasible constraints of the pressure loss along the x-axis of membrane length and upper and lower bound of feed flow rate of each membrane are considered. Interestingly, detailed optimisation results have conceived the optimal operating conditions that have the potential to gain net energy saving of RO system by 35%, whilst fulfilling the need for producing high-quality water. This research has economically upgraded the RO system of APC with a substantial improvement of process performance.

ACS Style

Alanood A. Alsarayreh; M.A. Al-Obaidi; A.M. Al-Hroub; R. Patel; I.M. Mujtaba. Optimisation of Energy Consumption in a Medium-scale Reverse Osmosis Brackish Water Desalination Plant. 13th International Symposium on Process Systems Engineering (PSE 2018) 2020, 48, 373 -378.

AMA Style

Alanood A. Alsarayreh, M.A. Al-Obaidi, A.M. Al-Hroub, R. Patel, I.M. Mujtaba. Optimisation of Energy Consumption in a Medium-scale Reverse Osmosis Brackish Water Desalination Plant. 13th International Symposium on Process Systems Engineering (PSE 2018). 2020; 48 ():373-378.

Chicago/Turabian Style

Alanood A. Alsarayreh; M.A. Al-Obaidi; A.M. Al-Hroub; R. Patel; I.M. Mujtaba. 2020. "Optimisation of Energy Consumption in a Medium-scale Reverse Osmosis Brackish Water Desalination Plant." 13th International Symposium on Process Systems Engineering (PSE 2018) 48, no. : 373-378.

Book chapter
Published: 19 October 2020 in 13th International Symposium on Process Systems Engineering (PSE 2018)
Reads 0
Downloads 0

In nowadays, renewable energy has become a key area of interest for solving many problems such as climate changes, security of energy supply, and poverty reduction. To face these challenges and issues, the penetration and the implementation of renewable energy technologies have been done through Hybrid energy systems (HES). The aim of this work is to highlight an overview of software tools used in HES to get an optimum design of HES to get a better reliability and efficiency of electricity generated and to save the cost of installation. Within this context, the most software tools used widely in terms of techno-economic design of HES are so far HOMER, iHOGA, and RETScreen. This paper will help policy makers, academic researchers and energy planners to take a better decision for the paradigm shift of renewable energy.

ACS Style

H.O. Guelleh; I.M. Mujtaba; R. Patel. Computational Tools used in Hybrid Renewable Energy Systems Optimization-An overview. 13th International Symposium on Process Systems Engineering (PSE 2018) 2020, 48, 1477 -1482.

AMA Style

H.O. Guelleh, I.M. Mujtaba, R. Patel. Computational Tools used in Hybrid Renewable Energy Systems Optimization-An overview. 13th International Symposium on Process Systems Engineering (PSE 2018). 2020; 48 ():1477-1482.

Chicago/Turabian Style

H.O. Guelleh; I.M. Mujtaba; R. Patel. 2020. "Computational Tools used in Hybrid Renewable Energy Systems Optimization-An overview." 13th International Symposium on Process Systems Engineering (PSE 2018) 48, no. : 1477-1482.

Book chapter
Published: 19 October 2020 in 13th International Symposium on Process Systems Engineering (PSE 2018)
Reads 0
Downloads 0

Multi Effect Distillation (MED) and Reverse Osmosis (RO) processes have been expansively explored for fresh water production from seawater resources. Interestingly, the performance indicators including energy consumption of different proposed arrangements of hybrid system of MED and RO processes have been analysed in a previous study by the same authors. This in turn has explored the feasibility of a simple design of permeate reprocessing RO process and MED process of hybrid system that corresponding the lowest energy consumption compared to other experienced arrangements of hybrid system. However, this design still operated at a significantly high level of energy utilisation measured in kWh per m3 of produced water. In this research, the lowest possible energy consumption of the chosen hybrid system is investigated via the embedment of an optimisation framework in the same author’s previous operation model for the same design. Occasionally, the optimisation problem is framed as a Nonlinear Programming problem to locate the optimal control variables of the associated RO process within their upper and lower limits to achieve the main objective function. This in turn has resulted in mitigating the total energy utilisation of the hybrid system with satisfying a constraint of high-quality produced water.

ACS Style

O.M.A. Al-Hotmani; M.A. Al-Obaidi; Y.M. John; R. Patel; F. Manenti; I.M. Mujtaba. Minimisation of Energy Consumption via Optimisation of a Simple Hybrid System of Multi Effect Distillation and Permeate Reprocessing Reverse Osmosis Processes for Seawater Desalination. 13th International Symposium on Process Systems Engineering (PSE 2018) 2020, 48, 379 -384.

AMA Style

O.M.A. Al-Hotmani, M.A. Al-Obaidi, Y.M. John, R. Patel, F. Manenti, I.M. Mujtaba. Minimisation of Energy Consumption via Optimisation of a Simple Hybrid System of Multi Effect Distillation and Permeate Reprocessing Reverse Osmosis Processes for Seawater Desalination. 13th International Symposium on Process Systems Engineering (PSE 2018). 2020; 48 ():379-384.

Chicago/Turabian Style

O.M.A. Al-Hotmani; M.A. Al-Obaidi; Y.M. John; R. Patel; F. Manenti; I.M. Mujtaba. 2020. "Minimisation of Energy Consumption via Optimisation of a Simple Hybrid System of Multi Effect Distillation and Permeate Reprocessing Reverse Osmosis Processes for Seawater Desalination." 13th International Symposium on Process Systems Engineering (PSE 2018) 48, no. : 379-384.

Book chapter
Published: 19 October 2020 in 13th International Symposium on Process Systems Engineering (PSE 2018)
Reads 0
Downloads 0

In this study a detailed mechanistic model for the packed column of the humidification-dehumidification (DHD) desalination plant was developed. This model was derived by considering an individual raschig ring with porous wall within a column as control volume then used to establish the relationship of vapor transfer rate to temperature and moisture gradients. gPROMS software was used to simulate the model with second order centered finite difference as discretization method and the results compared with those from literature. It was found that the maximum vapor transfer rate corresponds with coarse-textured media at volumetric moisture content of 0.05 m3/m3. While the volumetric moisture content was highly influential to the isothermal vapor diffusivity which had maximum value of 1.17 x 10-5 cm2/s it had negligible influence to the thermal vapor diffusivity that was relatively low at 4.3 x 10-8 cm2/s for the entire range.

ACS Style

Damson Kaunga; Raj Patel; Iqbal Mujtaba. Modelling and Performance Evaluation of Humidification-Dehumidification Desalination Plant with Column Packing of Various Textures. 13th International Symposium on Process Systems Engineering (PSE 2018) 2020, 48, 385 -390.

AMA Style

Damson Kaunga, Raj Patel, Iqbal Mujtaba. Modelling and Performance Evaluation of Humidification-Dehumidification Desalination Plant with Column Packing of Various Textures. 13th International Symposium on Process Systems Engineering (PSE 2018). 2020; 48 ():385-390.

Chicago/Turabian Style

Damson Kaunga; Raj Patel; Iqbal Mujtaba. 2020. "Modelling and Performance Evaluation of Humidification-Dehumidification Desalination Plant with Column Packing of Various Textures." 13th International Symposium on Process Systems Engineering (PSE 2018) 48, no. : 385-390.

Journal article
Published: 13 October 2020 in Separation and Purification Technology
Reads 0
Downloads 0

The formation of methyl decanoate (MeDC) by esterification reaction of decanoic acid with methanol through batch/continuous reactive distillation columns is operationally challenging, energy intensive and thus cost intensive operation due to complex thermodynamic behaviour of the reaction scheme. Aiming to overcome the equilibrium restriction of the decanoic acid (DeC) esterification operation, to improve the process efficiency and to reduce the total annualised cost (TAC), the semi-batch distillation column (SBD) and the recently proposed integrated semi-batch distillation column configuration (i-SBD) are investigated here. The performances of each of these column operations are evaluated in terms of minimum TAC for a given separation task. In both column configurations, additional operating constraints are considered into the optimization problem to prevent flooding of still pot due to the continuous charging of methanol into it. This study shows the superiority of i-SBD mode of operation over SBD operation in terms of TAC. Also, the optimization results for a defined separation task indicate that the performance of multi-interval control policy is overwhelmingly superior to the single-interval control operation in terms of operating batch time, and overall annual cost in the i-SBD system providing about a time saving of 82.75%, and cost (TAC) saving of 36.61% for a DeC (product) concentration of 0.945 molefraction.

ACS Style

Dhia Y. Aqar; Iqbal M. Mujtaba. Economic feasibility of an integrated semi-batch reactive distillation operation for the production of methyl decanoate. Separation and Purification Technology 2020, 257, 117871 .

AMA Style

Dhia Y. Aqar, Iqbal M. Mujtaba. Economic feasibility of an integrated semi-batch reactive distillation operation for the production of methyl decanoate. Separation and Purification Technology. 2020; 257 ():117871.

Chicago/Turabian Style

Dhia Y. Aqar; Iqbal M. Mujtaba. 2020. "Economic feasibility of an integrated semi-batch reactive distillation operation for the production of methyl decanoate." Separation and Purification Technology 257, no. : 117871.

Review
Published: 17 September 2020 in Processes
Reads 0
Downloads 0

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.

ACS Style

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 Style

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 (9):1174.

Chicago/Turabian Style

Omer 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.

Journal article
Published: 02 September 2020 in Computers & Chemical Engineering
Reads 0
Downloads 0

The semi catalyst regenerative commercial naphtha catalytic reforming of Kaduna Refinery, Nigeria is modelled and simulated with general process modelling systems (gPROMS) model builder 5.0.0 which is a computational tool in modelling process and complex chemical engineering processes. The thermodynamic and kinetics parameters used are obtained from the referenced literature. The model was validated with data from literature and was used to simulate the commercial data of KRPC. Simulation results obtained were good compared with the plant and literature data and these results were used in monitoring the plant performance and the temperature and concentration profiles of the parafins, naphthenes and aromatics as they change across the reactor bed heights. Hydrogen partial pressure effect on the product quality, aromatics and product yields were studied. It was found that an increase in hydrogen hydrocarbon ratio of 5.6 to 7.4, aromatics yield decrease from 58.5% to 55.5%, reformate yield increases from 52,805 kg/h to 53,234.5 kg/h, hydrogen yield increases from 10,955 kg/h to 14,515 kg/hr. The percentage weight of coke on the catalyst decreases with increase in hydrogen hydrocarbon ratio of 5.6 to 7.4 from 1.8%wt to 1.289%wt, 3.297%wt to 2.415%wt, 4.457%wt to 3.351%wt and 5.1850%wt to 3.983%wt for reactors 1, 2, 3 and 4 respectively.

ACS Style

Aminu Z. Yusuf; Yakubu Mandafiya John; Benjamin O. Aderemi; Raj Patel; Iqbal. M. Mujtaba. Effect of hydrogen partial pressure on catalytic reforming process of naphtha. Computers & Chemical Engineering 2020, 143, 107090 .

AMA Style

Aminu Z. Yusuf, Yakubu Mandafiya John, Benjamin O. Aderemi, Raj Patel, Iqbal. M. Mujtaba. Effect of hydrogen partial pressure on catalytic reforming process of naphtha. Computers & Chemical Engineering. 2020; 143 ():107090.

Chicago/Turabian Style

Aminu Z. Yusuf; Yakubu Mandafiya John; Benjamin O. Aderemi; Raj Patel; Iqbal. M. Mujtaba. 2020. "Effect of hydrogen partial pressure on catalytic reforming process of naphtha." Computers & Chemical Engineering 143, no. : 107090.

Journal article
Published: 27 July 2020 in Chemical Product and Process Modeling
Reads 0
Downloads 0

Reverse Osmosis (RO) process can be considered as one of the intensively used pioneering equipment for reusing wastewater of several applications. The recent study presented the development of an accurate model for predicting the dimethylphenol removal from wastewater via RO process. The Response Surface Methodology (RSM) was applied to carry out this challenge based on actual experimental data collected from the literature. The independent variables considered are the inlet pressure (5.83–13.58) atm, inlet temperature (29.5–32) ° C, inlet feed flow rate (2.166–2.583) × 10–4 m3/s, and inlet concentration (0.854–8.049) × 10-3 kmol/m3 and the dimethylphenol removal is considered as the response variable. The analysis of variance showed that the inlet temperature and feed flow rate have a negative influence on dimethylphenol removal from wastewater while the inlet pressure and concentration show a positive influence. In this regard, F-value of 240.38 indicates a considerable contribution of the predicted variables of pressure and concentration against the process dimethylphenol rejection. Also, the predicted R2 value of 0.9772 shows the high accuracy of the model. An overall assessment of simulating the performance of RO process against the operating parameters has been systematically demonstrated using the proposed RSM model.

ACS Style

Mudhar Al-Obaidi; Basman Al-Nedawe; Abdulrahman Mohammad; Iqbal Mujtaba. Response surface methodology for predicting the dimethylphenol removal from wastewater via reverse osmosis process. Chemical Product and Process Modeling 2020, 1 .

AMA Style

Mudhar Al-Obaidi, Basman Al-Nedawe, Abdulrahman Mohammad, Iqbal Mujtaba. Response surface methodology for predicting the dimethylphenol removal from wastewater via reverse osmosis process. Chemical Product and Process Modeling. 2020; ():1.

Chicago/Turabian Style

Mudhar Al-Obaidi; Basman Al-Nedawe; Abdulrahman Mohammad; Iqbal Mujtaba. 2020. "Response surface methodology for predicting the dimethylphenol removal from wastewater via reverse osmosis process." Chemical Product and Process Modeling , no. : 1.

Research article
Published: 02 June 2020 in Asia-Pacific Journal of Chemical Engineering
Reads 0
Downloads 0

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.

ACS Style

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 Style

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 (6):1.

Chicago/Turabian Style

Saleh 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.

Journal article
Published: 20 May 2020 in Computers & Chemical Engineering
Reads 0
Downloads 0

Batch oxidative desulfurization (ODS) process is investigated here for the removal sulfur compound from light naphtha using homemade new nano-catalyst. The catalyst is made of manganese dioxide supported on zeolite nanoparticles which shows an excellent catalytic performance with good impregnation, high activity, good pore size distribution and larger surface area. Different reaction temperature, time and initial sulfur concentration are used to have a deeper insight of the process. The experimental results reveal that the conversion of sulfur compound is increased by increasing the initial sulfur concentration, the reaction temperature and batch time. A mathematical model of the process is developed and validated using the experimental data within gPROMS software with high accuracy. The validated model (errors less than 5% between experimental and predicted results) is then utilized to obtain the optimal operation conditions of the process giving maximum conversion of sulfur (higher than 99%) resulting in an environmentally friendly fuel.

ACS Style

Aysar T. Jarullah; Ghazwan S. Ahmed; Ban A. Al-Tabbakh; Iqbal M. Mujtaba. Enhancement of light naphtha quality and environment using new synthetic nano-catalyst for oxidative desulfurization: Experiments and process modeling. Computers & Chemical Engineering 2020, 140, 106869 .

AMA Style

Aysar T. Jarullah, Ghazwan S. Ahmed, Ban A. Al-Tabbakh, Iqbal M. Mujtaba. Enhancement of light naphtha quality and environment using new synthetic nano-catalyst for oxidative desulfurization: Experiments and process modeling. Computers & Chemical Engineering. 2020; 140 ():106869.

Chicago/Turabian Style

Aysar T. Jarullah; Ghazwan S. Ahmed; Ban A. Al-Tabbakh; Iqbal M. Mujtaba. 2020. "Enhancement of light naphtha quality and environment using new synthetic nano-catalyst for oxidative desulfurization: Experiments and process modeling." Computers & Chemical Engineering 140, no. : 106869.