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Systematic Biological Upgrade of.a Urea f.rtilizer Ef.luent Treatment Plant Using GPS

Open Journal of.Applied Sciences 2023年第8期13卷 1457-1477页

作者： Isyaku Ahmad Joseph T. Akintola Regina J. Patinvoh wilson f. ekpotu Martins C. Obialor Philemon Chukwuebuka Udom Process (Urea) Department Dangote Fertiliser Limited Lagos Nigeria Department of.Research & Development Vitapur Nigeria Limited Lagos Nigeria Department of.Chemical Engineering Faculty of Engineering Lagos State University Lagos Nigeria Department of.Chemical & Petroleum Engineering University of Uyo Akwa Ibom Nigeria Department of.Chemical Engineering Federal University of Owerri Owerri Nigeria

The use of.modeling and simulation has developed into a critical tool f.r the sustainable management of.wastewater, especially when it comes to replicating the complex biochemical procedures required f.r f.rtilizer ef.luent treatment, which calls f.r a signif.cant amount of.wastewater-related data. The biological improvement of.a urea f.rtilizer ef.luent via GPS* simulation was carried out in this work using a methodical process. Using established analytical techniques, temperature, total suspended solids (TSS), biochemical oxygen demand (BOD), total phosphorus (T/), chemical oxygen demand (COD), total nitrogen (TN), total nitrate (NO3), electric conductivity (EC), turbidity, residual chlorine, urea, NH3, and heavy metals (Cu, Cd, Cr, Pb, Ni, and f.) were assessed. The research revealed that the measured values f.om the f.rtilizer f.ctory outf.ll ef.luent had high concentrations of.all the physicochemical water quality indicators, with the exception of.TSS, PO4-, SO4-, and NO3-. These concentrations are higher compared to the authorized limits or suggested values by the f.deral Environmental Protection Agency (f.PA). To improve the therapy biologically, however, a modeling and simulation program (GPS-X, version 8.0) was used with the physicochemical inf.rmation gathered f.om the studied sample. The results of.the treated water simulation showed that the concentrations of.BOD5 and COD had been signif.cantly reduced by 35% and 44%, respectively. Additionally, it was discovered that total phosphorus (TP), nitrate (N), and total nitrogen (TN) were all within the permitted f.PA limit. The results revealed good treatment perf.rmance of.the wastewater with increasing concentration of.acetic acid and sodium hydroxide. Hence, the results of.this research work identif. the need f.r proper treatment of.f.rtilizer industry ef.luents prior to their release into the environment.

关键词： f.rtilizer Wastewater Ef.luent Discharge Basin Outf.ll Basin Physiochemical Analysis GPS* Modelling & Simulation

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Historical Review of.Hydrogen Energy Storage Technology

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World Journal of.Engineering and Technology 2023年第3期11卷 454-475页

作者： wilson f.delis ekpotu Joseph Akintola Martins Chineme Obialor Udom Philemon Department of.Chemical & Petroleum Engineering University of Uyo Akwa Ibom Nigeria Department of.Research & Development Vitapur Nigeria Limited Lagos Nigeria Nubyira Process Designer Abuja Nigeria

Hydrogen energy as a sustainable energy source has most recently become an increasingly important renewable energy resource due to its ability to power f.el cells in zero-emission vehicles and its help in lowering the levels of.CO2 emissions. Also, hydrogen has a high energy density and can be utilized in a wide range of.applications. It is indeed the f.el of.the f.ture but, it is still not entirely apparent how to analyze the most successf.l ways f.r hydrogen storage based on technological conf.guration, nature, and ef.iciency mechanisms. The historical hydrogen storage technologies as they are presented by the current research have been evaluated, analyzed, and examined in this study. The two categories of.hydrogen storage systems are physical-based and *** f.rst category involves storing hydrogen as liquid, cold/cryo-compressed, and compressed gas. Chemical sorption/chemisorption and physical sorption/physisorption are the two primary sub-groups of.material-based storage, respectively. The quantitative and qualitative analyses of.storage technologies f.r hydrogen are evaluated in this paper. Also, this report reviews the major saf.ty and reliability issues currently f.cing hydrogen storage systems. Suggestions are made to assist lay the groundwork f.r f.ture risk and reliability analysis to ensure saf., dependable operation.

关键词： Hydrogen Energy Energy Storage Sustainable Energy Hydrogen Storage Energy Source

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A Solar Energy System Design f.r Green Hydrogen Production in South-Western Nigeria, Lagos State, Using HOMER & ASPEN

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Open Journal of.Optimization 2023年第2期12卷 72-97页

作者： wilson f.delis ekpotu Joseph Taiwo Akintola Martins Chineme Obialor Philemon Chukwuebuka Udom Department of.Chemical & Petroleum Engineering University of Uyo Akwa Ibom Nigeria Department of.Research & Development Vitapur Nigeria Limited Lagos Nigeria Department of.Chemical Engineering Federal University of Owerri Owerri Nigeria

Solar system design f.r green hydrogen production has become the most prominent renewable energy research area, and this has also actively f.eled the desire to achieve net-zero emissions. Hydrogen is a promising energy carrier because it possesses more energy capacity than f.ssil f.els and the abundant nature of.renewable energy systems can be utilized f.r green hydrogen production. However, the design of.an optimized electrical energy system required f.r hydrogen production is crucial. Solar energy is indeed benef.cial f.r green hydrogen production and this research designed, discussed, and provided high-level research on HOMER design f.r green hydrogen production and deployed the energy requirement with ASPEN Plus to optimize the energy system, while also incorporating f.zzy logic and PID control approaches. In addition, a promising technology with a high potential f.r renewable hydrogen energy is the proton exchange membrane (PEM) electrolyzer. Since its cathode (hydrogen electrode) may be operated over a wide range of.pressure, a control process must be added to the system in order f.r it to work dynamically ef.iciently. This system can be characterized as an analogous circuit that consists of.a resistor, capacitor, and reversible voltage. As a result, this research work also explores the f.zzy-PID control of.the PEM electrolysis system. Both the PID and f.zzy Logic control systems were simulated using the control simulation program Matlab R2018a, which makes use of.Matlab script f.les and the Simulink environment. Based on the circuit diagram, a transf.r f.nction that represents the mathematical model of.the plant was created, and the PEM electrolysis control system is determined to be highly signif.cant and applicable to the two control systems. The PI controller, however, has a 30.8% overshoot def.cit, but when the f.zzy control system is compared to the PID controller, it is f.und that the f.zzy control system achieves stability more quickly, demonstrating i

关键词： Homer Solar Design Solar Energy Renewable Energy Green Hydrogen Production f.zzy Logic HOMER

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