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99 articles for “Hydrogen Production”
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The Study of the Formation of Negatively Charged Electrolysis Hydrogen Bubbles and Their Size Control Under Microgravity Conditions for Separation of Solid Inclusions from Fluid
Abstract: The previously conducted theoretical description of the mechanism of formation of negatively charged electrolysis hydrogen bubbles and control of their size under terrestrial conditions, confirmed experimentally, permitted to conclude that negatively charged electrolysis hydrogen bubbles, floating up in a fluid, meet on their way the solid particle with dimensions much larger than the size of bubbles and induce a positive charge on the surface of the solid particle. As a …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 3, 2021 · pp. 14–26 Read article
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A new method of phytoplankton concentration as a cycle of solving environmental problems and obtaining energy from high-quality biofuel (lipid oil)
Abstract: The stagnant zones of fresh lakes, formed due to increased reproduction of phytoplankton in stagnant water under the influence of the sun, pose a serious threat to the environment, leading to the death of phytoplankton and fish, releasing hydrogen sulfide and making the water unsuitable even for agricultural use. In this regard, the development of a method for concentrating phytoplankton from "green water" becomes an urgent task associated not only …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 12, Issue 2, 2022 · pp. 55–61 Read article
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Proposal of System for High Efficiency Energy Extraction from LNG and Study of Use of EGR and SCR System in Ships
Abstract: The paper focuses on the green shipping methodologies and environment friendly practices. Liquefied natural gas (LNG) is one of the most effective alternatives to traditional shipping fuels. Ports have LNG re-gasification systems, which generally use Open Rack Vaporizers (ORVs) to convert the LNG to NG. In this process, a lot of the ‘cold energy’ is lost. A proposal for a LNG re-gasification system has been made in this paper which …
Published in Journal of Offshore Structure and Technology · Vol. 8, Issue 4, 2021 Read article
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Aspen HYSYS Simulation of Suspension (Slurry) Process for the Production of Polyethylene
Abstract: AbstractThis study deals with the steady state simulation of polyethylene plant using Aspen HYSYS V10 simulation model. Looped reactor model is used to mimic the behaviour of the suspension (slurry) polymerization process. Effect of various operating conditions like the inflow rate of the monomer ethylene on solvent, catalyst, co-monomer and hydrogen flow rate are studied. Model predicted that the change in monomer flow rate linearly affected the process variables. Keywords: …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 31–34 Read article
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Heterogeneous vs. Homogeneous Catalysis: Comparative Insights and Breakthroughs
Abstract: Catalysis, a pivotal process in chemical reactions, can be classified into two main types: heterogeneous and homogeneous catalysis. This comparative analysis delves into the distinctions, advantages, and breakthroughs in both domains. Heterogeneous catalysis, involving catalysts in a different phase than the reactants, is characterized by ease of separation and catalyst recovery, making it industrially favorable. Conversely, homogeneous catalysis, where catalysts and reactants share the same phase, offers superior selectivity and …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 3, 2023 · pp. 1–7 Read article
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From Photoreceptors to Photoelectrodes: Integrating Biological Light-Harvesting Mechanisms with Nanostructured Photoelectrochemical Systems
Abstract: The efficient conversion of solar energy into electrical and chemical energy is a major scientific challenge of the twenty-first century. Natural photoreceptors provide valuable models for addressing this challenge because they have evolved highly efficient mechanisms for capturing and converting light energy. Biological systems such as rhodopsins, bacteriorhodopsins, proteorhodopsins, cryptochromes, phototropins, and phytochromes employ chromophore-driven photoinduced electron and proton transfer processes to initiate a wide range of physiological responses, including …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 4, Issue 2, 2026 · pp. 25–33 Read article
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New Advanced Life Support System (LSS) for long-duration missions on the International Space Station (ISS) and Interplanetary Spacecraft
Abstract: Oxygen in the air and the water are vital for the smooth operation of the crews of the International Space Station and interplanetary spacecraft during long-term flights. Replenishing by the water, oxygen and micro algae biomass by delivering them to the International Space Station or to the interplanetary spacecraft is not economically viable. Therefore, the task arises of using and developing new systems that use the regeneration of oxygen, hydrogen, …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 10, Issue 3, 2021 · pp. 28–45 Read article
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Design of a Plant for the Production of Ammonia and Urea Using Aspen HYSYS
Abstract: The design of a plant for the production of 1800 MT/Day of ammonia and 1400 MT/Day of urea using aspen HYSYS was carried out in this work. Ammonia is produced through the Haber-Bosch process, where hydrogen and nitrogen react in the presence of a catalyst producing mixture containing ammonia while urea is produced by the reaction between ammonia and carbon IV oxide. In this work, aspen HYSYS, chemical engineering design …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 1, 2022 · pp. 29–44 Read article
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Nano- Catalysts for Enhanced Performance in Hydrogenation Reactions
Abstract: The development of nano-catalysts has revolutionized the field of hydrogenation reactions, offering unparalleled efficiency and selectivity. This study explores the synthesis, characterization, and application of novel nano-catalysts designed to enhance hydrogenation processes. By leveraging advanced materials science techniques, we have engineered catalysts with precisely controlled particle sizes, shapes, and surface properties. These nano-catalysts exhibit remarkable activity and stability, attributed to their high surface area-to-volume ratios and unique electronic structures. Our …
Published in Journal of Catalyst & Catalysis · Vol. 11, Issue 1, 2024 · pp. 22–27 Read article
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Formation of Anolyte and Catholyte Types of Water during electrolysis and their Effect on Living Organisms
Abstract: During electrolysis, an anolyte (dead water) and catholyte (living water) solutions are formed. Anolyte promotes metabolic processes, and is also mild antiseptic. The disinfecting effect of the anolyte is equivalent to treatment with iodine, brilliant green, hydrogen peroxide, without causing chemical burns of living tissues and not staining them. The living water, being a catholyte, has enhanced bio stimulating properties. It has a beneficial effect on the human organism, enhancing …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 3, 2021 · pp. 34–40 Read article
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TiO2-ZrO2 Supported Nickel Oxide Catalysts for Hydrogenation of Levulinic Acid to -Valerolcatone
Abstract: The Titania-Zirconia (TZ) mixed oxide sample (50:50 wt.% percent) was prepared by a simple coprecipitation method and used as a support for the nickel catalyst. The various loadings of nickel content from 1 to 20 wt.% were synthesized for the production of γ-valerolactone (GVL) from levulinic acid (LA). Among all the tested samples, the 5 wt.% Ni/TZ sample exhibited the 98% conversion of LA and 96% selectivity to GVL and …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 35–44 Read article
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Effects of Chlorpyrifos as Inducer for Oxidative Stress in Liver, Kidney and Spleen of Freshwater Fish, Pseudetroplus maculatus (Bloch, 1795)
Abstract: Chlorpyrifos is one of the most common organophosphate insecticides found abundantly in freshwater ecosystems and has been detected in agricultural and fishery products worldwide. The study focused to determine the effect of chlorpyrifos on the induction of oxidative stress in freshwater fish Pseudetroplus maculatus. Fish were exposed to sublethal concentrations (0.661 and 1.32 μg/l) of chlorpyrifos for 15 and 30 days. Activities of antioxidant enzymes and the levels of hydrogen …
Published in Research and Reviews: A Journal of Toxicology · Vol. 8, Issue 1, 2018 · pp. 20–29 Read article
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An Overview of Blends Based on Thermoplastic Starch
Abstract: In recent years, research has concentrated on biodegradable substances to replace petroleum- based polymers for use in food packaging. Biopolymers are seen to be the most promising material for this purpose due to their biodegradable nature and long shelf life characteristics like resistance to chemical or enzymatic processes. Starch is a biopolymer that is cheap, sustainable, and eco-friendly and could be a feasible method for making biocomposites. The production and …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 14, Issue 3, 2023 · pp. 47–52 Read article
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Catalysed Biofuels Using Vegetable Oils and Animal Fats
Abstract: It is a first to use biochemical modification of fats to create fuel for transport. The chemical transformation is required to produce products that are more useful and have qualities similar to those of crude oil-derived fuels. Biodiesel (a combination of methyl esters produced by transesterification) and green diesel are the two forms of fuels discussed (paraffins produced by hydrogenation of oils). Three bio-lubricant synthesis strategies are also discussed. Biofuels …
Published in Journal of Catalyst & Catalysis · Vol. 9, Issue 1, 2022 · pp. 30–34 Read article
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Synthesis, physicochemical and FTIR characterization of vegetable oil-based polyol from (Ximenia americana) seed oil.
Abstract: AbstractTo source for alternatives vegetable oil in the production of polyol, oil was extracted from Ximenia americana seed, and the oil yield was recorded to be 51%. Using standard methods, X. americana seed oil (XSO) was analyzed for its refractive index, density, acid value, peroxide value, iodine value and viscosity, and the results obtained were 1.3680, 0.867 g/cm3, 0.2805 mg KOH/g, 31.33 meqO2/kg, 92.46 mgI2/100 g, 225.23 Cp (at 25°C), …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 9, Issue 3, 2018 · pp. 23–28 Read article
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Theoretical Investigation on Separation of High Purity Nitrogen, Oxygen and Argon from Atmospheric Air at Cryogenic Temperature
Abstract: Air is a mixture of various gases like nitrogen, oxygen, argon, hydrogen, helium, neon, etc. These gases can be separated at cryogenic temperature by liquefying each of their components at different temperature and pressure. This paper presents latest technology in bulk production of high purity of nitrogen, oxygen & argon from air, and analytical process design of a 1250 ton/day plant. The results are compared with the data of actual …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 1, Issue 3, 2014 · pp. 20–25 Read article
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A Technical Review on cause of corrosion on carbon steel
Abstract: Piping is used in power plants, petrochemical plants and refineries to convey fluids to and from their place of usage and forms an essential part of the operation of the plant. It is advantageous for the student at Fourth Class level to understand the differences between piping requirements for the various fluids concerned, the materials best to be used, commercial pipe sizes, methods of connection and fittings. The challenging environment …
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 1, 2018 · pp. 1–4 Read article
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In silico Screening of Some Natural Sesquiterpenes Against Diverse Therapeutic Targets: A Multitargeted Approach
Abstract: The present research was rational in-silico based exploration of other significantly essential pharmacological potentials of the existing natural sesquiterpenes by using the Schrodinger software which is already known to scientific community owing to their anticancer and antibacterial potentials. The sesquiterpenes have been explored for possible therapeutic excellence by screening against Lipoxygenase-5 (anti-inflammatory), Cycloxygenase-2 (anti-inflammatory), Dipeptidyl peptidase (antidiabetic), Cyclin-Dependent Kinase-5 (anticancer), Angiotensin-1 Converting Enzyme (antihypertensive), and Protein kinase C (anticancer). The …
Published in Research & Reviews: A Journal of Bioinformatics · Vol. 6, Issue 2, 2019 · pp. 10–15 Read article
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Upgrading Nutritive Value of Rice Straw: Processing, Supplementation, and Agronomic Innovations for Improved Utilization
Abstract: Rice straw, a major byproduct of rice production, holds significant potential as a livestock feed but is constrained by its high lignocellulosic content, low crude protein, and poor digestibility. Enhancing its nutritive value is imperative for sustainable livestock production. This study explores a range of innovative strategies aimed at improving rice straw’s digestibility and overall nutritional quality. Physical processing techniques, including chopping, grinding, soaking, and steam treatment, enhance its surface …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 1, 2026 · pp. 42–58 Read article
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Self-Healing Polymer Nanocomposites: A Comprehensive Review of Design Strategies, Mechanisms, and Emerging Applications
Abstract: Self-healing polymer nanocomposites (SHPNs) are a new class of materials that can autonomously repair themselves to prolong their lifetime and improve their application performance. Herein, we provide a comprehensive overview of the design strategies, healing mechanisms, and emerging applications of SHPNs. Incorporating nanofillers (nanoparticles, nanofibers, and/or nanotubes) into polymer matrices leads to requisite functionalization that significantly enhances mechanical properties and is essential in self-healable products including improved cross-linking, high dispersion, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 281–293 Read article