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458 articles for “concentration”
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Comprehensive Review of Membrane Fouling Control Mechanisms
Abstract: One of the biggest problems with membrane-based separation procedures is membrane fouling. As particles, organic matter, microbes, and other materials build up on the membrane’s surface or inside its pores, the effectiveness of membranes – such as those used in reverse osmosis, ultrafiltration, and microfiltration – declines over time. The effectiveness and longevity of the membrane are eventually lowered because of this fouling, which causes a drop in flux and …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 2, 2025 · pp. 1–9 Read article
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Design and Development of Semiconductor Nanocomposites for Photoelectrocatalytic Applications
Abstract: Humanity is currently facing an unprecedented challenge: anthropogenic climate change. This complex phenomenon is driven by a multitude of factors, including scientific, psychological, societal, and social dimensions, among others. the release of greenhouse gases, such as CO2, CH4, N2O, HFCs, and PFCs have increased significantly. Since the industrial revolution, atmospheric CO2 levels have surged by 50%. Although gases like CO2 and CH4 occur naturally and are essential for maintaining the …
Published in International Journal of Composite and Constituent Materials · Vol. 10, Issue 2, 2024 · pp. 25–32 Read article
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A Quasi-experimental Study to Evaluate the Effectiveness of Spirulina with Lemon Juice on Anemia among Under-five Children in Selected Schools at Madurai, Tamil Nadu
Abstract: Anemia among under-five children is an important concern for the health authorities in India. Untreated anemia in children can have a serious effect on their growth. Spirulina is blue-green algae. It contains protein, iron, vitamins, and minerals. It is aimed at a quasi-experimental study to evaluate the effectiveness of spirulina with lemon juice on anemia among under-five children in selected schools at Madurai, Tamilnadu. Quasi-experimental pre-test post-test control group design …
Published in International journal of Nursing Science Practice and Research · Vol. 8, Issue 2, 2022 · pp. 50–61 Read article
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Suitability of Methyldiethanolamine (MDEA) and Piperazine (PZ) for Improving CO2 Absorption Efficiency Using Rotating Packed Bed (RPB) Technology: A Modeling and Simulation Study
Abstract: Carbon dioxide (CO2) capture and storage (CCS) is an essential technology for reducing atmospheric CO2 emissions and mitigating climate change, especially in fossil-fuel power generation. However, the high cost of CCS technologies has hindered their widespread adoption. In this study, we modeled CO2 removal using a rotating packed bed (RPB) technology using Visual Fortran and Aspen Plus software. We made use of a blended amine solution including different molar concentration …
Published in International Journal of Chemical Engineering and Processing · Vol. 9, Issue 2, 2023 · pp. 9–15 Read article
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Biological Recovery of Soil Impacted by 30,000 ppm of Gasoline
Abstract: Gasoline is a mixture of low and high molecular weight hydrocarbons, which spilled on the soil due to fuel theft, causes environmental pollution. In consequence the Mexican standard, called NOM-138- SEMARNAT/SSA1-2012, establishes a maximum allowed limit of 4,400 ppm gasoline in soil. Therefore, the objectives of this research were i) biological recovery of the soil impacted by 30,000 ppm of gasoline, by biostimulation with commercial detergent 123® plus a mineral …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 2, 2023 · pp. 31–39 Read article
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Production of Biogas from the Anaerobic Co-Digestion of Cow-Dung and Tannery By-Products
Abstract: This work was majorly focused on the production of biogas anaerobically through the co-digestion of cow-dungs and tannery waste and also to reduce the concentration of sulphide by direct inclusion of facultative lagoon sediment with sodium and calcium alginate. Various tannery fleshing to cow-dung ratio of 1:0, 1:0.5, 1:1 and 1:2 were investigated. The optimum was established to be ratio 1:2 is designated as a top methane concentration up to …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 2, 2021 · pp. 1–10 Read article
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Evaluation of Antimicrobial Activity using Zinc Oxide Nanoparticles
Abstract: The goal of the study was to use common laboratory techniques to create Zinc Oxide nanoparticles in a short amount of time and to check the antibacterial activity of zinc oxide nanoparticles on gram negative and gram positive bacteria. Wet chemical technique was used to make zinc oxide nanoparticles. Activity augmentation for Escherichia coli and Staphylococcus aureus were studied when used in combination with Zinc Oxide Nanoparticles. The Nps are …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 1, 2021 · pp. 24–27 Read article
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Sugar Powder Impact on Strength of Concrete
Abstract: Abstract This experimental study examines the effect of adding sugar powder to concrete on its compressive strength. The research explores how sugar powder, when used as an additive in concrete mixtures, alters the concrete’s structural performance, particularly in terms of its ability to resist compressive forces. Through systematic testing and analysis, the study aims to determine the extent to which sugar powder can influence the strength and durability of concrete, …
Published in International Journal of Concrete Technology · Vol. 11, Issue 1, 2025 · pp. 15–21 Read article
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A Study on Stress Analysis of Aluminum Alloy Solidified in Metallic Molds
Abstract: Abstract The casting technique is regarded as the primary manufacturing process. It has several process parameters that affect the cast structure. Mold geometry is considered one of the most important metal parameters to cast. In the current work, the influence of mold geometries on mechanical properties (deformation and stress concentration) of liquid Aluminum alloy solidified in the steel mold is assessed using ANSYS simulation software. Molds were subject to a …
Published in International Journal of Manufacturing and Materials Processing · Vol. 10, Issue 2, 2024 · pp. 10–15 Read article
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An Evaluation of Lactate Dehydrogenase in the Lindane Exposed Fresh Water Fish, Channa punctatus
Abstract: The objective of this study was to investigate the changes in lactate dehydrogenase (LDH) activity and its isozyme profile in the lindane exposed fish, Channa punctatus, after 96h treatment with three subacute concentrations (0.025, 0.05, 0.1mg/l)). The results showed decreased activity of LDH in different organs of the fish; the values recorded were in following order: gills>brain>liver>muscle>heart>kidney. The maximum decrease was found in liver (22.53%) and minimum in muscle (12.74%). …
Published in International Journal of Animal Biotechnology and Applications · Vol. 7, Issue 1, 2021 · pp. 9–19 Read article
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Ethanol Production from Banana Peels by Fermentation Process using Yeast
Abstract: The need of energy is increasing day by day and sustainability is becoming important factor in growth. To fulfil the need of rising population, it has become necessary to find alternative sources of fuel. Non-renewable sources are depleting fast. Use of renewable sources has become important area of research in sustainable engineering. Synthesis of biofuel from waste feedstock is being explored for increasing fuel economy and reduce environmental footprints. Ethanol …
Published in International Journal of Green Chemistry · Vol. 8, Issue 1, 2022 · pp. 1–8 Read article
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Comparative Study of Corrosion Inhibition In Carbon Steel Using Non Ionic Surfactants In Acidic Medium
Abstract: The use of surfactants is one of the numerous ways of protecting a metallic surface from electrochemical oxidation or corrosion. The amphiphilic nature of these surfactants leads to the formation of a protective layer on the metallic surface, effectively minimizing the area of contact between the fluids and the metal, thus inhibiting corrosion. Cationic surfactant like CTAB (Cetyltrimethylammonium bromide) has been most commonly used as a corrosion inhibitor, but since …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 1, 2018 · pp. 21–29 Read article
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Essence of Physicochemical Model of the Formation of Negatively Charged Microdispersed Hydrogen Bubbles in the Process of Electrolysis of Water Solutions
Abstract: Electrolytic hydrogen bubbles, formed during the electrolysis of water solutions, have two unique properties: microdispersion and negative charge of their surface, which allow them as a result of an elementary act of flotation to form strong complexes: negatively charged micro dispersed hydrogen bubbles-microscopic solid particle, biological cell, whose floatation to the free surface of water solution due to their increased volume compared to individual components ensures the successful completion of …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 1, 2022 · pp. 30–42 Read article
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STUDY OF NANOFLUIDS AND THEIR APPLICATION IN HEAT TRANSFER
Abstract: Heat transfer enhancement has always been the area of improvement. A large amount of research is going by changing the design, shape and size of the devices which requires high quality materials. Nano-fluids can serve this purpose very correctly, because of their high heat transfer capability. Nano-fluids have higher thermal conductivity and higher surface area to volume ratio which helps in increasing the heat transfer. Nano-fluid thermal conductivity models are …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 3, Issue 1, 2017 · pp. 22–27 Read article
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Experimental investigation on single cylinder 4-stroke diesel engine using nanofluids as a coolant to compact the system
Abstract: Recent power sectors associated with an internal combustion engine had a crucial challenge to reduce the size and weight of the thermal management system of internal combustion engines. This work aims to reduce the size and weight of the internal combustion engine cooling system by utilizing particular types of working medium as a coolant in place of traditional ones. In this study, the effects of water base CuO nano-coolant on …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 7, Issue 1, 2021 · pp. 12–25 Read article
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Kinetic and Mechanistic Study of Isomenthol Oxidation by Trichloroisocyanuric Acid in Acidic Medium
Abstract: The oxidation reaction of isomenthol with trichloroisocyanuric acid (TCICA) was systematically investigated in acidic medium to understand its kinetics, reaction mechanism, and overall reactivity. The study was carried out under pseudo-first-order conditions by maintaining a large excess of isomenthol relative to TCICA, allowing accurate determination of the reaction rate. The progress of the oxidation reaction was monitored kinetically, and the obtained data revealed that the reaction follows first-order kinetics with …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 2, 2026 · pp. 1–7 Read article
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Indigo Carmine Oxidations in Aqueous and Micellar Media Using Specific Oxidants—A Review Article
Abstract: Abstract Indigo carmine is an anionic synthetic dye widely used in textile, food, and pharmaceutical industries. The discharge of this dye into water bodies poses severe environmental concerns due to its intense color, more stability, and resistance to biodegradation. Consequently, the oxidation and degradation of this dye through electron transfer reactions have been widely investigated. The present review focuses on studies related to oxidation of indigo carmine dye using various …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 12, Issue 1, 2026 · pp. 44–56 Read article
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Evaluation of Kinetic Parameters of Crude Oil Remediation Using Bio-Stimuant of Mint Leaf (Mentha piperita)
Abstract: Kinetic parameters of crude oil degradation as related to total petroleum hydrocarbon (TPH) were evaluated. The experiment was set-up using crude oil, loamy soil polluted and addition of bio-stimulant (nutrient based substance). The depletion of the pollutant was monitored within the contact time of 7 to 35 days. At intervals of 7 days samples were collected and analyzed to determine the TPH concentration at each bioreactor set-up, through subjecting the …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 1, 2026 · pp. 62–71 Read article
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Investigation on the Comparison of the Physical Properties of Stimulants for Petroleum Hydrocarbon Remediation in Soil
Abstract: Crude oil pollution is a major environmental concern that can cause significant damage to soil ecosystems. Bioremediation, a natural process in which microorganisms degrade pollutants, has emerged as a promising approach for the remediation of crude oil-contaminated soil. Grape leaf powder (Vitis Vinifera), a readily available and inexpensive organic material, has been shown to stimulate microbial activity and enhance bioremediation. This study investigated the effectiveness of grape leaf powder as …
Published in International Journal of Environmental Chemistry · Vol. 12, Issue 1, 2026 · pp. 53–68 Read article
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Studies on Extraction of Bioflavonoids from Leaves of Plumeria rubra
Abstract: Plumeria rubra, a tropical flowering plant from the Apocynaceae family, holds notable aesthetic and traditional significance. It is frequently grown in tropical areas as an ornamental shrub or small tree, reaching up to six meters in height. Renowned for its visual appeal, it is especially valued in the creation of leis and other floral arrangements. Although the plant’s sap is toxic, it is recognized for its medicinal and aromatic potential. …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 11, Issue 1, 2025 · pp. 10–16 Read article