All articles
466 articles
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Bifurcation-Aware Nonlinear Dynamics and Optimal Control of PEM and SOFC Fuel Cells for Stable and Efficient Operation
Abstract: This study presents a detailed analysis of two main fuel cell technologies: Proton Exchange Membrane (PEM) fuel cells and Solid Oxide Fuel Cells (SOFCs). Both systems are modeled using simplified nonlinear differential equations that capture the linked electrochemical, thermal, and mass transport interactions shaping their behavior. The main goal of this work is to examine the occurrence of Hopf bifurcation phenomena in both systems and assess how effective bifurcation-aware control …
Published in International Journal of Chemical Engineering and Processing Read article
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State-wise Assessment of Rooftop Solar Progress: Role of Financial Assistance and Policy Frameworks in Driving Market Growth in India
Abstract: India's rooftop solar (RTS) sector has experienced significant growth, aligning with the nation's commitment to sustainable energy. This paper explores the growth trajectory of the rooftop solar sector, particularly focusing on the domestic category in Indian states, where government initiatives and financial support from both the Central Government (Ministry of New and Renewable Energy, MNRE) and state governments have played crucial role in promoting adoption. Over the years, improvements to …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 11, Issue 2, 2025 · pp. 65–81 Read article
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Advanced Membrane Technologies and Materials for Sustainable Industrial Separations: Alternatives to Energy-Intensive Distillation Processes
Abstract: Distillation is one of the most widely used separation processes in the chemical, petrochemical, pharmaceutical, and food industries; however, it is also among the most energy-intensive operations, accounting for a substantial portion of global industrial energy consumption. The increasing demand for sustainable manufacturing and reduced carbon emissions has driven significant interest in membrane-based separation technologies as alternatives or complements to conventional distillation. Advanced membrane processes, including Organic Solvent Nanofiltration (OSN), …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 32–53 Read article
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Optimization of Hybrid Adsorption–Membrane Systems for Enhanced PFAS Separation from
Drinking Water Sources
Abstract: Perfluorooctanesulfonic acid (PFOS) is an emerging environmental pollutant that has been discovered in water sources around the world. The stability of these pollutants and their effects on human health have necessitated the need for remediation measures. Hybrid adsorption–membrane technology has been suggested as a possible solution to this problem because of its ability to integrate the capability of adsorption materials and membranes to remove contaminants from the environment. This study …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 9–21 Read article
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Design and Development of Solar-Powered Carbon Sequestration Device: A Step Towards Sustainable Development in Air Pollution
Abstract: Rising levels of atmospheric carbon dioxide (CO₂) and other greenhouse gases, primarily driven by industrialization, rapid urbanization, and the large-scale burning of fossil fuels, have intensified global climate change and worsened air quality worldwide. Ecological imbalance resulting from these anthropogenic activities remains one of the most critical environmental challenges of the twenty-first century. Conventional Carbon Capture and Storage (CCS) technologies, such as amine scrubbing, have been widely explored but remain …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 64–68 Read article
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Dynamic Matrix Control Versus Nonlinear ModelPredictive Control for the Van de Vusse ContinuousStirred-Tank Reactor: Diagnosing and Correcting aCost-Function Pathology That Masked NMPC’sTrue Performance
Abstract: The Van de Vusse reaction in a continuous stirred-tank reactor (CSTR) is a benchmark for nonlinear multivariable control, but its narrow operating envelope creates a trap for nonlinear model predictive control (NMPC): when the setpoint step is small relative to the plant’s reachable range, a standard quadratic NMPC cost function can make zero control action mathematically optimal, even with a perfect prediction model. This paper documents that failure mode, traces …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 55–66 Read article
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Automatic Floating Structured Hybrid Power Plant
Abstract: Hybrid renewable energy systems provide an effective solution to overcome the intermittency and reliability issues associated with individual renewable energy sources. This paper presents the design and development of an automatic floating structured hybrid power plant that integrates floating solar photovoltaic (FSPV) technology with a pico-hydroelectric generation system on a single platform. The floating structure enables efficient utilization of water surfaces while enhancing solar panel performance through natural cooling effects. …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 12, Issue 2, 2026 · pp. 61–74 Read article
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Hybrid Organic–Inorganic Metal Halide Perovskite Solar Cells: A Comprehensive Review of Materials, Device Architectures, Stability, Hysteresis, and Commercialization Challenges
Abstract: Hybrid organic–inorganic metal halide perovskite solar cells (PSCs) have emerged as a major focus of photovoltaic research due to their remarkable increase in power conversion efficiency, reaching 28% within a short period. Perovskite materials exhibit several attractive properties, including long charge-carrier diffusion lengths, tunable band gaps, and excellent light absorption capability. In addition, their low-cost fabrication processes combined with high efficiency make PSCs strong competitors to conventional silicon-based solar cells. …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 12, Issue 2, 2026 · pp. 47–60 Read article
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Computation of Total Petroleum Hydrocarbon Percentage Reduction in Soil: Application of Grape Leaf as Bio-Stimulant for Remediation
Abstract: The potential of the grape leaf effectiveness in treating polluted soil environment was monitored on this research and the bio-stimulant was processed on two ways condition namely room-dried and sun-dried conditions. The characteristics of the bio-stimulant was checked and tested after passing through these processes for the purpose of degerming its performance in the treatment of contaminated soil environment with crude oil. Both bio-stimulants were rated excellence in handling the …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 1–8 Read article
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Overview of Influence of Biomass Pretreatment: Hydrolyzed vs Unhydrolyzed on BioH2 Yield
Abstract: Infact, overview on the potential of the hydrolyzed and unhydrolyzed biodigester system to produce biohydrogen (BioH2) gas using wood saw dust material obtained from Nigeria was examined with respect to the influence of the biomass build-up as well as related to the pretreatment property. The production of hydrogen gas was influenced by the pH and particle size of the wood saw dust and both the hydrolyzed and unhydrolyzed biodigester yielded …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 10–19 Read article
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Sonochemical Synthesis of Copper Nanoparticles:Process Fundamentals, Scale-Up Challenges, andIndustrial Opportunities
Abstract: The sonochemical synthesis of copper nanoparticles (Cu NPs) has emerged as a powerful and widely investigated strategy in nanomaterials research, owing to the unique physicochemical conditions generated during ultrasonic irradiation. Acoustic cavitation induced by sonication produces transient microenvironments characterized by extremely high local temperatures, pressures, and rapid cooling rates, which collectively enable efficient reduction of copper precursors into nanoscale particles. These conditions cannot be easily achieved through conventional synthetic routes, …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 37–43 Read article
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Biochemical Pathways in the Biosynthesis of Pharmacologically Active Secondary Phytometabolites
Abstract: Plants are the main storage house of most food products, medicines, and nutritional supplements that exist. There are basically two kinds of phytochemicals in plants: these include primary and secondary metabolites. Primary metabolites play a crucial role in the biological functioning of plants because they play a major role in the processes of mitosis, respiration, metabolism, growth, and reproduction. Secondary metabolites are not just mere by-products of primary metabolism in …
Published in International Journal of Agrochemistry · Vol. 12, Issue 2, 2026 · pp. 1–12 Read article
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Design and Analysis of Grid-Connected Solar PV System with Reactive Power Support for LVRT Capability Under Weak Grid Conditions
Abstract: The increasing integration of renewable energy sources, particularly solar photovoltaic (PV) systems, into modern power systems has introduced significant challenges related to grid stability and voltage regulation Grid-connected PV systems are required to operate reliably under weak grid conditions, where high grid impedance leads to severe voltage fluctuations. During grid faults, especially voltage sag conditions, maintaining voltage stability and ensuring continuous operation of the PV system becomes critical. This paper …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 12, Issue 2, 2026 · pp. 1–21 Read article
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Evaluation of Coconut Coir Feasibility as Fluid Loss Control Material in Comparison with Commonly Used NUTPLUG
Abstract: This work centers on decreasing drilling fluid loss circulation by using coconut coir as a loss circulation material. Millions of dollars are invested yearly to counteract lost circulation and its consequences, including clogged pipes, blowouts, and abandoned wells. Drilling mud was formulated with varied percentages of coconut coir and nut plugs, which were utilized as loss circulation materials to minimize or decrease drilling fluid loss. The two materials being compared …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 20–36 Read article
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Smart Wastewater Treatment Plant Modeling Using ANN And ASM1 MATLAB Simulation
Abstract: Wastewater Treatment Plants (WWTPs) are necessary infrastructure for protecting the environment and public health, but modeling and predicting performance has been an ongoing challenge for engineers working within a WWTP and regulators of the environment. For many years the Activated Sludge Model No. 1 (ASM1) has been the standard for simulating biological treatment processes, but the conventional implementations in MATLAB do not provide the user-friendly interface, the predictive intelligence, or …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 44–62 Read article
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Evaluation of Kinetic Parameters of Total PetroleumHydrocarbon Degradation Using Grape Leaf as Nutrientto Catalyze the Reaction
Abstract: The outcomes of the research are to determine and evaluate the kinetic parameters of total petroleum hydrocarbon degradation using grape leaf as nutrient to catalyze the reaction. The application of the Michaelis–Menten model equation in combination with the Lineweaver–Burk Plot theoretical conceptual techniques was adopted in handling the computation of the functional parameters and coefficients of the system. The impact of bio-remediant dosage was monitored, and the kinetic parameters were …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 1–9 Read article
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A Performance Evaluation of Transformer, LSTM, and ARIMA Models for LoadForecastinginIndia'sRenewable-RichSmart Grid
Abstract: India is trying to use renewable energy such as solar and wind to produce extreme and unpredictable fluctuations within India's National Smart Grid. These extreme fluctuations create difficulties for traditional load forecasting methods, including Autoregressive Integrated Moving Average (ARIMA) models, to provide stable and efficient operation through the creation of accurate short-term load forecasts. To accomplish this, the research aims to develop high-quality predictive models by comparing three modelling methods: …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 12, Issue 2, 2026 Read article
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Density-Based Separation and Polymer Type Verification of Mixed Post-ConsumerThermoplastic Streams: A Sequential Separation and Contamination Reduction Protocol for Secondary Polymer Supply Chains
Abstract: The separation of mixed post-consumer thermoplastic waste streams into polymer-type-specific fractions suitable for industrial reintegration is a fundamental chemical separation challenge in secondary polymer supply chains. Density-based separation, exploiting the characteristic density ranges of common thermoplastic polymers, remains the dominant first-stage separation technique in commercial recycling operations due to its low cost, scalability, and applicability across mixed waste stream compositions. This paper presents a sequential separation and contamination reduction protocol …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 Read article
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An approach for Intelligent detection of dirty PV panels using image processing with YOLOv8
Abstract: The efficiency of solar photovoltaic (PV) systems is greatly affected by the condition of panel surfaces, as dust buildup and other impurities can noticeably reduce power output. Traditional maintenance methods rely largely on manual inspection, which can be subjective, inconsistent, and impractical for large-scale installations. To address these challenges, this work investigates a deep learning-based computer vision approach for the automatic assessment of solar panel cleanliness. In this work, a …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 12, Issue 2, 2026 Read article
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Mathematical Analysis of the Effect of Fly Ash Application in Agricultural Fields on Soil Properties and Crop Productivity
Abstract: Fly ash is regularly generated as a by-product by coal or thermal power stations. The potential of fly ash as a resource material in agriculture and related areas is now a well-established fact. The application of fly ash in agriculture is due to its favorable physicochemical properties, including appreciable content of essential plant nutrients. When compared to soil, fly ash consists of all the elements except organic carbon and nitrogen. …
Published in International Journal of Agrochemistry · Vol. 12, Issue 1, 2026 · pp. 32–38 Read article