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568 articles for “dependent”
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Impact of Agriculture Production on Climate: Contributor and Victim
Abstract: The agriculture production is one of the major contributors in emission of Greenhouse gases (GHGs) emission, soil degradation, biodiversity losses and pollution and hence both contributor and victim to climate change. According to IPCC, Agriculture sector accounts to around 24 percent of total GHGs emission. The Impact on climate largely depends on the agricultural practices of scale of these farming/agricultural practices of farmers. As per consensus of IPCC, its already …
Published in International Journal of Green Chemistry · Vol. 9, Issue 1, 2023 · pp. 37–43 Read article
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A Novel Approach to Pulse Anodizing for Decreasing Energy Consumption and Increasing Productivity
Abstract: Anodizing is a resourceful method used to give aesthetic appearance and to prevent a metal from corrosion by forming an oxide layer over its surface. Depending upon the different fields of application various power supply such as direct current (DC) and pulsed current (PC) are used. This paper reviews an existing anodizing method which can be optimized with a few simple guidelines. Several current densities and pulse periods were tested …
Published in International Journal of Analytical and Applied Chemistry · Vol. 1, Issue 1, 2015 · pp. 21–39 Read article
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Electrodes at commercial forefronts
Abstract: Electrodes at commercial forefronts describe self sustenance approaches in place of traditional cent percent dependence on fissile fuels. Application of solid oxide fuel cells in developed multi-electrode systems have employed in cases of power shortages at nano-material designs. Nano-materials have large surface area but introduced problems such as poor electrode packing densities, high electrolyte reactivity, and expensive synthesis procedures. Thermal stress assisted electrolytic decomposition has motivated use of high temperature …
Published in International Journal of Analytical and Applied Chemistry · Vol. 5, Issue 1, 2019 · pp. 15–28 Read article
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PETROLEUM PRODUCTS: FRACTIONS OF CRUDE OIL
Abstract: Petroleum (also called crude oil), is a source of energy which is non-renewable. It is a naturally occurring liquid found beneath the Earth’s surface (Lithosphere) that can be refined into fuel. Petroleum is a fossil fuel, which means that it has been created by the decomposition of organic matter over millions of years. It is developed in sedimentary rock under severe heat and pressure. Petroleum or crude oil is a …
Published in International Journal of Analytical and Applied Chemistry · Vol. 5, Issue 2, 2019 · pp. 17–33 Read article
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Experimental Demonstration on Microfluidic-Leakage in SU-8 based Glass Devices for Applications towards the Polymer Microfluidics
Abstract: Classical mechanics and quantum mechanics belong to the first quantisation in physics. Quantummechanics is dependent on quantum theory. Quantum field theory is the second quantisation inphysics. Fluid mechanics is a branch of classical mechanics (non-quantum). Therefore, fluidmechanics is present at the first quantisation in physics. Bulk-fluidics (microfluidics), microfluidicsand nanofluidics are the three levels of fluid mechanics towards miniaturisation. In this experimentalwork, the microfluidic-leakage is prominently demonstrated by fabrication of 12 …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 1, 2021 · pp. 1–7 Read article
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Macro-compounds and Macro-cycles with Their Applications
Abstract: Macro-compounds represent an ancient class of compounds that enter into coordination chemistry as a ligands such as (crown ethers, aza, thia and others), or in the field of organic chemistry through large cyclic compounds such as porphyrins, vitamins and others, where corona ethers are strongly linked with specific cations forming coordination complexes, In which the oxygen atoms occupy positions suitable for coordination with a cation located inside the ring, and …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 2, 2021 · pp. 1–12 Read article
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Numerical Analysis of Flow Characterization in a Continuous Crystallizer
Abstract: In this work, hydrodynamics in a draft tube continuous crystallizer is analyzed computationally through Ansys CFD to crystallization phenomena. Hindrance to fluid mixing and particle suspension due to vortexing can be overcome by providing baffles. A draft tube ensures that it directs the flow in vertical direction ensuring good axial blending. Here CFD simulations are performed using multiple reference frame (MRF) with sliding mesh approach in transient condition for flow …
Published in International Journal of Chemical Separation Technology · Vol. 2, Issue 2, 2016 · pp. 33–43 Read article
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An Innovative Approach to Improve Cleaning Efficiency of Filter Cake in Gas & Oil Drilling Wells
Abstract: Drilling fluids are the complex fluids used for the drilling of oil and gas wells. The effective completion of an oil and gas well and invention of hydrocarbons from the oil and gas reservoir depends to a significant extent on the properties of drilling fluids selected during drilling operations. Filter cake stick provisionally until it is removed by dissolvers at the last stage of the well drilling. Theoretically the filter …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 1, 2017 · pp. 24–28 Read article
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Hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline in a three-phase Reactor
Abstract: The liquid-phase catalytic hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was carried out in ethanol using 5% Pd/C as a catalyst. The effects of hydrogen partial pressure (400–1000 kPa), reaction temperature (343–403 ), catalyst loading (5–15 g/lit), speed of stirring range (200-800 rpm) and dimethyl-nitrobenzene concentration (0.12–0.75 mol/lit) on the hydrogenation of dimethyl-nitrobenzene and the yield of Dimethyl-aniline have been studied. Dimethyl-aniline was the only reaction product, generated through the …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 2, 2017 · pp. 1–13 Read article
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Analysis of Vapour-Liquid Equilibrium Behaviour of Cryogenic Hydrogen-Deuterium Mixtures Using Cubic Equation of State-based Method
Abstract: A comparative analysis of the vapour liquid equilibrium behaviour of the cryogenic hydrogen-deuterium system calculated under the assumption of an ideal solution using pure component vapour pressure data versus that of a real solution using Peng-Robinson cubic equation of state has been presented in this work. It is found that assumption of ideal solution leads to over prediction of the relative volatilities by 14% to 57% depending on the mixture …
Published in International Journal of Chemical Separation Technology · Vol. 4, Issue 2, 2018 · pp. 1–13 Read article
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Nanofiltration a chemical separation technique
Abstract: Nanofiltration innovation has made considerable progress since its first commencement in the last part of the 1980s. The essential diaries detailing articles on nanofiltration are the Journal of Membrane Science, Desalination and Separation and Purification Technology. There has been a clear development in the space of natural dissolvable nanofiltration, drug, and organic applications, plan and financial aspects of nanofiltration cycles, and survey articles.Nanofiltration (NF) with benefits of high productivity and …
Published in International Journal of Chemical Separation Technology · Vol. 7, Issue 2, 2021 · pp. 34–38 Read article
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Electrolytic Deposition of Zn–Ni Alloy from Acidic Sulphate Bath and Their Characterization
Abstract: A bath containing ZnSO4.7H2O, NiSO4.7H2O, thiamine hydrochloride (THC) and citric acid (CA) has been proposed. Bright Zn–Ni alloy coatings were developed galvanostatically onto mild steel (MS) and their corrosion resistance and other physical properties were studied. THC was found to improve the brightness and homogeneity of the deposit. The dependency of bath composition, current density (c.d.), pH and temperature, agitation on wt.% Ni were tested. Deposition was carried out under …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 2, 2016 · pp. 19–32 Read article
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Catalytic hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline over Ni catalysts
Abstract: The catalytic transfer hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was studied in the temperature range 343–403 , pressure range of 4–10 bar H2 and ethanol as solvent using Ni on alumina-silicate as catalyst above agitation speed 800 rpm. The substrate feed concentration was varied in the range from 0.124 to 0.745 kmol/m3 while catalyst loading was in the range 4–12% (w/w) of dimethyl-nitrobenzene. Dimethyl-aniline was the only reaction product, …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 2, 2017 · pp. 19–29 Read article
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Analysis and optimization of exergy losses in a heavy water distillation column
Abstract: Heavy water (D2O) of isotopic purity 99.9% and more is used as the moderator and the coolant in pressurized heavy water nuclear reactors (PHWRs). This purity is maintained by vacuum distillation. In the column there are various sources of irreversibility and thermodynamic inefficiency. This work presents an analysis of these losses in a typical heavy water distillation column and their dependence on various design and operating parameters of the column. …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 2, 2018 · pp. 1–22 Read article
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Utilization of Mulberry Methanolic Leaf Extractive (MMLE) for Treating Hypercholesterolemia in Rat, Rattus norvegicus (L)
Abstract: Healthy diet is the foundation for a healthier workforce and lower healthcare costs. The diet therapy for regulation of cholesterol is exerting influence to reduce mortality and morbidity. The Methanolic Mulberry Leaf Extractives (MMLE) (at the rate of 100 and 200 mg/kg body weight) and the standard hypolipidemic medicine Questran were administered through the diet to the rats of hypercholesterolemia (maintained on high cholesterol diet). Treatment was five times per …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 44–68 Read article
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Kinetics of Oxidation of L-Proline by Hexacyanoferrate (III) Ion in Presence of Os (VIII)
Abstract: Amino acids are building block of proteins and maintaining a vital role in growth of human beings as well as animals. Amino acids may form metal complexes and other complexes in animal and human body. Therefore, the study of oxidation of amino acids as well as their complexes is interesting area for academicians and physicians. Amino acids are the compounds of two functional groups -NH2 and –COOH. Hence depending on …
Published in International Journal of Chemical Engineering and Processing · Vol. 7, Issue 1, 2021 · pp. 12–24 Read article
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Chemical Synthesis and Characterization of Polyaniline for Supercapacitors Application
Abstract: Various polyaniline (PANI) synthesis methods are reported in the literature, depending on the experimental parameters involved (T, t, doping, and mixing procedure). Herein, three chemical polymerization methods were used to synthesis PANI from aniline monomer: rapid oxidation (OR), controlled oxidation (CO), and interfacial oxidation (OI). The PANI was therefore deposited next by drop casting on a silicon (Si) substrate. X-ray diffraction, Raman spectroscopy, and scanning electron microscopy were used to …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 2, 2022 · pp. 9–16 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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Fluoride Distribution and Related Health Problems
Abstract: Fluoride is one of the very few chemicals that cause significant effects in people depending upon their concentration. Although present naturally in soil, water and air, fluoride consumption occurs largely through water. Fluoride intake at low concentration is known to cause beneficial effects on teeth, however at high concentrations; it may give rise to a number of adverse effects. These range from mild dental fluorosis to crippling skeletal fluorosis as …
Published in International Journal of Environmental Chemistry · Vol. 1, Issue 2, 2015 · pp. 9–12 Read article
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Development of Predictive Model on Corrosion of Metals in Swampy Soil Environment
Abstract: The research carried out to examine the usefulness of corrosion in metals in swampy soil. It also reveals the weight loss and corrosion rate in a metal. The following physicochemical parameters which include BOD, COD, pH and microbial activities were modelled. The extent of metal corrosion in swampy soil is dependent on many different and often interrelated factors, trying to predict what may happen to a specific object after wrecking …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 1, 2020 · pp. 15–29 Read article