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172 articles for “absorption”
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Chemical Separations to Transform the Domain
Abstract: The chemical industry includes producers of industrial gases, large-volume commodity chemicals and polymers, chemical products for agricultural and medicinal uses, and performance-targeted chemical and polymer specialties. The industry produces more than 70,000 products, including raw and basic materials, intermediate materials, and finished products. The chemical industry obtains raw materials from the petroleum refining, natural gas, and mining industries, as well as from biological sources. Air emissions included 4.3 million metric …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 2, 2017 · pp. 24–29 Read article
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Preparation and Performance Evaluation of LDPE/Rice Starch Blend Composites by Extrusion Method
Abstract: Discarding synthetic polymers such as low-density polyethylene (LDPE) used in food packaging ingredients is today considered a serious ecological threat because they are non-decomposable. The goal of this article is to create a decomposable polymer by incorporating a bio-polymer (starch) into its polymeric matrix. This article focuses on the preparation and characterization of rice starch (RS)-mixed LDPE decomposable polymer. In the first study, the effect of variability of RS content …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 1, 2022 · pp. 1–22 Read article
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Multivariate modeling of mineral water Karachi, Pakistan
Abstract: In last few decades the demand of mineral water has increased and is very important for human life due to shortage of pure and clean water. The mineral water is produced by various companies with different names and brand with approval of the relevant authorities. The present study was carried out for the preconcentration and determination of trace amount of metals (Cd, Cu, Pb, Fe, Mn, Ni, and Zn) from …
Published in International Journal of Environmental Chemistry · Vol. 5, Issue 2, 2019 · pp. 49–59 Read article
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Electronic Waste Vs Environmental Sustainability: Global Ultimatum to Society
Abstract: We often suppose that the risks of electronic waste solely have an effect on us which come back directlywith it and are in the main a consequence of inappropriate handling. Obviously, this can be right andthere are many studies that proof the risks ensuing from direct contact with harmful materialscomparable to lead, metal or chromium. The studies together alert us concerning however differentelements, let's say brominated flame retardants generate toxic …
Published in International Journal of Environmental Chemistry · Vol. 7, Issue 1, 2021 · pp. 1–5 Read article
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Synthesis of Zeolites: An Overview
Abstract: Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents and catalysts. Zeolite synthesized from CFA is a minor but interesting product, with high environmental applications. Zeolites may be easily obtained from CFA by relatively cheap and fast conversion processes. This paper provides an overview on the methodologies for zeolite synthesis from CFA, and a detailed description of conventional alkaline conversion processes, with special emphasis on the experimental conditions to …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 3, Issue 2, 2017 · pp. 8–14 Read article
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Fundamentals of Mass Transfer Operations
Abstract: Mass transfer operation is one of the most important subjects in chemical engineering. It contains concepts of diffusion, mass transfer coefficient and interface mass transfer. Also important unit operations such as distillation, absorption, extraction, crystallization, drying, humidification and dehumidification are covered in mass transfer operation. We come across these unit operation in our domestic applications and day to day life. These unit operations can be intensified to improve the cost …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 15–18 Read article
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SYNTHESIS AND IR-SPECTROSCOPIC STUDY OF MIXED LIGAND COMPLEX COMPOUNDS OF COPPER (II) FORMAT WITH SOME AMIDES
Abstract: Complex compounds of metals with amides, having biological activity are widely used in agriculture. Complex compounds of copper with organic ligands are physiologically active, participating in the vital processes of living organisms; the formiats have bactericidal and fungicidal properties. For the first time, mixed ligand complex compounds of copper (II) formate with formamide, thiocarbamide, acetamide and carbamide in an aqueous solution were synthesized. Using the methods of IR spectroscopy and …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 2, 2020 · pp. 31–38 Read article
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Aerogel from Ceramic Composite
Abstract: This article is written from conferred articulated forms of aerogel. Sol-gel is a usual method toprepare aerogel. Compromise of inherent fragile mater under extensive moisture absorption tendencyof silica network has mitigated after inclusive of polyhedral oligomeric silsesquioxane (POSS)molecule. Long term applicability of silica aerogel has cited to confer superhydrophobic and flexibleconfigure based on synthesis by the catalysed sol-gel process; in accord of usual two-step method ofacid activation followed by basic …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 1, 2021 · pp. 1–12 Read article
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INVESTIGATION ON PORTABILITY OF OTUOKE UNDERGROUND WATER.
Abstract: The study was designed to investigate the portability on groundwater in Otuoke, Bayelsa State. A total of four groundwater samples were acquired and analyzed for their physico-chemical and heavy metal parameters. Heavy metals were all analyzed with the Atomic Absorption Spectrometer and spectrophotometer. The result revealed that for the heavy metals, iron was most predominant, ranging from 0.70 to 0.08 mg/L. Arsenic was below the machine detectable limit and Assessment …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 8, Issue 2, 2022 · pp. 30–36 Read article
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EFFECT OF GLUCOSE ON PHYSICO-CHEMICAL PROPERTIES OF SOME SURFACTANT SOLUTIONS
Abstract: Physico-chemical and thermodynamic studies of some aqueous surfactant solutions were carried out by employing conductance and dye solubilization (UV-Vis absorption spectroscopy) techniques. From the above measurements, critical micelle concentration (CMC) and thermodynamic properties of micellization (ΔGomic , ΔHomic and ΔSomic) have been obtained for an anionic [Sodium dodecyl sulphate (SDS)],a cationic [hexadecyl trimethyl ammonium bromide, (HTAB)] and non ionic (Tween-20) surfactant solutions. Effect of mixing cosolute on CMC and thermodynamics …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 1–22 Read article
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Physical and Chemical Adsorption and its Applications
Abstract: The content of the review requires extensive information about the excellence of its physical and chemical types, which is a superficial phenomenon that refers to the ability of solid or liquid materials to attract or pull molecules of gases or liquid solutions to their surface to come into direct contact with them, where the term adsorbents is used to denote those solid or liquid materials. The liquid used to adsorb …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 1–9 Read article
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Laws of Thermodynamics Challenge Greenhouse-Gas and CLIMATE- change Hypotheses
Abstract: The greenhouse-gas hypothesis (GGH), i.e., CO2 is the cause of global warming by ~1K from ~1950-2023, is popularly believed to be established scientific truth. It is generally assumed that heat emissions from global fuel combustion are, by comparison, negligible. An application of the Hess-Gibbs 1st law of thermodynamics, however, shows that the enthalpy (H) output from yearly fossil fuel consumption is seven times greater than the H- increase of hypothetical …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 1, 2023 · pp. 7–19 Read article
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Evaluation of Strength in Natural Bricks by Using Mineral Admixtures
Abstract: In the construction field nowadays substructures and superstructure are adopted by bricks only for the framed type of structure and also load bearing wall adopted for bricks in super structure works. Last four decades in our Tamil Nadu more number of bricks were used for the buildings. In this work, it is decided to design an alternate to clayey soil with addition of stabilisers such as fly ash, rice husk …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 85–89 Read article
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A Study on Mechanical Properties and Fracture Behavior of Chopped Fiber Reinforced Self-Compacting Concrete
Abstract: The development of self-compacting concrete (SCC) is innovatory landmark in the history of construction industry resulting in predominant usage of SCC worldwide nowadays. It has many advantages over normal concrete in terms of enhancement in productivity, reduction in labor and overall cost, excellent finished product with excellent mechanical response and durability. Further, incorporation of fibers enhances its properties specially related to post crack behavior of SCC. Hence, the aim of …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 90–122 Read article
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Study of Durability Properties of Bagasse Ash Concrete and Its Behaviour when Exposed to Elevated Temperatures
Abstract: The major driver for the economic growth and social progress of any country is its construction sector. In India, it is estimated that construction contributes 8% to 9% to GDP and this share is likely to increase in coming years. High-performance concrete made from ordinary Portland cement (OPC) and various supplementary cementitious materials (SCM) are alarmingly finding their use in construction worldwide. Bagasse ash (BA), one such SCM, the agro-industrial …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 2, 2022 · pp. 51–62 Read article
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Fresh and Hardened Properties of High Performance Concrete with Weld Slag as Fine Aggregate
Abstract: This research centers on the incorporation of welding slag, the residue remaining after the welding process, as fine aggregates in the production of high-performance concrete with a compressive strength of 70 MPa. The chemical and physical characteristics of welding slag aggregates (WSA), such as chemical compositions, specific gravity, SEM images, XRD, and EDS analysis, were investigated. Additional investigations were carried out by substituting welding slag with standard sand at varying …
Published in International Journal of Construction Engineering and Planning · Vol. 9, Issue 2, 2023 · pp. 29–36 Read article
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Utilization of Paper Waste in Making of Cement Concrete
Abstract: Cement manufacturing industry is one of the main carbon dioxide constructing sources moreover burning of fossil fuels and deforestation and concrete industry is one of the major consumers of natural virgin materials. India is the country that is facing a severe contest in the disposing the waste in landfills throughout the country. The landfill disposal is resulting in high disposal costs and potential environmental problems. If the current situation continues, …
Published in International Journal of Concrete Technology · Vol. 4, Issue 1, 2018 · pp. 36–41 Read article
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Compressive Strength and Chloride penetration on Semi-Lightweight Concrete Made Up of Artificial Aggregates
Abstract: This paper deals with the properties of semi-Light weight concrete prepared by using Light weight wood ash pellets as coarse aggregates. It can be prepared by varying the cement content from 300 to 450 kg/m3. Optimum design mix can be finalised by studying the engineering properties such as compressive strength, split tensile strength, young’s modulus and rapid chloride penetration test. Various trial mixes have been attempted in the laboratory by …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 14–25 Read article
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Evaluating the Rate of Response on Asphalt Concrete Mix Permeability Influenced by Non-Bituminous Modifier on Light Traffic
Abstract: Characterization of material property is fundamental in the Mechanistic-Empirical design of flexible pavement. One such key material property is the stiffness of the pavement these influences tensile strain levels and is imperative for either the determination or pavement cracking synonymous with pavement life. It is on this basis, that the present study explored techniques that will improve the performance of flexible road pavement by modifying its stiffness; dynamic modulus, E* …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 33–39 Read article
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Ground Water Quality Assessment and Testing for Irrigation Purpose, in irrigation potential Areas of Eastern Ethiopia
Abstract: Ground water quality test was conducted for different purpose in line with that irrigation water is the major issue related with crop production in terms of yield reduction due to soil salinization. Mostly, ground water contain significant amounts of detrimental substances that may reduce soil production and productivity. In the Easter parts of Ethiopia, surface and ground water not yet tested but salinity problems become worsening in the area. Thus, …
Published in International Journal of Water Resources Engineering · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article