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1604 articles for “analysis”
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Extraction of Tannin from Psidium guajava Leaves
Abstract: Psidium guajava leaves are widely used as medicine from ancient times. Leaves are important part of guava tree which are useful in curing many health issues. Guava leaves have properties like anti-cancer, antibacterial, anti-oxidant, antiulcer etc. they are used in curing many diseases. In this article, soxhlet extraction method is discussed and yield of this method is represented. Extraction processes with different solvent such as ethanol, methanol, benzene is discussed …
Published in International Journal of Chemical Separation Technology · Vol. 2, Issue 1, 2016 · pp. 19–23 Read article
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Chromatography for Chemical Separation: Types and Uses
Abstract: Chromatography is an analytical tool that is used for separating a variety of chemical mixtures. This technique was developed somewhere during the 1940s to 1950s. Initially, the technique had low efficiency with prolonged time of analysis and reduced detection range. Later, the technique was modified and improved to meet the demands of chemical separation technology. Chromatography is broadly categorized into analytical or preparative. Analytical chromatography is used for small sample …
Published in International Journal of Chemical Separation Technology · Vol. 2, Issue 1, 2016 · pp. 24–25 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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Rheological Study of Waste Polyethylene Terephthalate with Bitumen Mix in Pavement Construction
Abstract: Plastic bags which are composed of polyethylene terephthalate (PET) is commonly used as for soft drink, water bottles and many other applications. However, disposal of this waste PET in large quantities constitutes an environmental problem, as it is considered as non-biodegradable materials. This study investigated rheological study of waste PET to be mixed with bitumen use as a raw material for pavement construction. The effect of temperature was varied from …
Published in International Journal of Chemical Separation Technology · Vol. 4, Issue 1, 2018 · pp. 36–48 Read article
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Production of Waste Animal Bone as a Heterogeneous Solid Base Catalyst for Transesterification of Jatropha Oil
Abstract: Heterogeneous catalyst plays a vital role in transesterification process, especially in view of cost and reusability. In this study, heterogeneous solid base catalyst was prepared by impregnating the waste animal bone with different weight percent (wt%) KOH solution followed by drying and calcination at 900 °C for 3 hr. Having screened the catalytic performance and basicity of animal bone loaded with different K-compounds, 12 wt% KOH loaded on animal bone …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 1, 2019 · pp. 28–48 Read article
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Distribution Parameter Concentration of Alkalinity and Total hardness in Stagnant Water Environment: The Concepts of Oil and Gas Emission Influence
Abstract: Model for predicting the distribution parameter concentration of alkalinity and total hardness in stagnant water environment upon the influence of oil and gasemission was investigated in this paper. The model was formulated from the basic principle of mass and momentum concept which was resolved to obtain an ordinary differential equation. A mathematical tool known as the least square method was applied to resolve the differential equation to obtain quadratic equation …
Published in International Journal of Chemical Separation Technology · Vol. 6, Issue 1, 2020 · pp. 14–22 Read article
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Liquid–Liquid Equilibria of Water + Acetic Acid + Ethyl Acetate, Water + Acetic Acid + MIBK, Water + Acetic Acid + Mixed Solvent (Ethyl Acetate + MIBK) and Its Reliability
Abstract: In this work, binodal curves and tie-line liquid-liquid equilibria experimental data were obtained for the ternary systems water + acetic acid + ethyl acetate, water + acetic acid + methyl isobutyl ketone (MIBK) and water + acetic acid + mixed solvent (ethyl acetate + MIBK) at 293.15 K and atmospheric pressure by cloud-point titration method. Binodal curves, tie-line data, distribution coefficient and separation factor data were determined for these systems. …
Published in International Journal of Chemical Separation Technology · Vol. 7, Issue 2, 2021 · pp. 1–10 Read article
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Application of Hengstebeck's Model in Multicomponent Crude Oil Distillation Design
Abstract: Mathematical models were developed for the analysis of the Atmospheric Crude Distillation Unit of Port Harcourt Refinery in Nigeria. The resultant system of equations was solved using the method of matrix inversion using Mathlab software and the models predicted with reasonable accuracy composition of side draws (different fractions) and temperatures. Also, the effect of process parameters on the overall performance of the unit was studied. In addition, the study applied …
Published in International Journal of Chemical Separation Technology · Vol. 8, Issue 1, 2022 · pp. 13–19 Read article
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Predicting the TPH Concentration along Horizontal Direction of Stagnated Water Contaminated with Crude Oil
Abstract: The research predicts and models TPH concentration along Horizontal Direction of Stagnated water contaminated with Crude Oil. TPH diffusion in the stagnant water media was studied using Developed Dispersion and Degradation Model incorporated with first order degradation rate and the Monod equation. TPH content decreased with increase in time, but randomly varied across the depths. The impact of crude oil was more in the fresh water compared to salt water …
Published in International Journal of Chemical Separation Technology · Vol. 9, Issue 1, 2023 · pp. 12–22 Read article
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Crystal Growth, Synthesis and Characteristic Studies of Bismuth Doped Tristhioureazinc (II) Sulpate (ZTS) Crystal
Abstract: Potential semi organic tristhioureazinc(II) sulphate (ZTS), One of the best room temperature growth techniques for nonlinear optical materials with high SHG efficiency is slow evaporation solution growth, which produces pure and single crystals for use in laser technology and photonic applications. Single crystals Doping of Bismuth fluoride (equimolar) to ZTS is done during the crystallization process is further analysed by single crystal XRD which infers that the Bismuth doped ZTS …
Published in International Journal of Chemical Separation Technology · Vol. 9, Issue 2, 2023 · pp. 45–52 Read article
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Sapota Seed Oil
Abstract: The objective of this work was to extract and determine the chemical composition of oil obtained from sapota seed fruits that are grown in India and characterize it. The sapota seed oil was extracted from kernel using different solvents viz., (a) carbon tetra chloride, (b) n-hexane and (c) toluene for eight extractions or stages. Nearly, 20–23% of oil yield was obtained. The oil has acid value – 4.11 to 9.5, …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 1, 2016 · pp. 15–18 Read article
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Career and Employability Skills of Diploma Chemical Engineers
Abstract: Today, Chemical Engineering is need of human survival. From morning to night, people used different products which are generally made up of different chemicals. From medicines to fuels, tremendous needs of chemical products are increasingly, which are useful in human life. Chemical Engineering was initiated with the aim to transform raw materials into some beneficial products using chemical reactions. Chemical engineers use the principles of engineering analysis and knowledge of …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 1, 2016 · pp. 11–14 Read article
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A Study on the Effect of Current Density on Electrocatalytic Behavior of Ni–Co Alloy
Abstract: Active, stable and more efficient electrocatalysts are the requirements for water splitting applications. In this direction, the present paper presents the experimental results on electrolytic development of Ni–Co alloy coatings, and their application as electrode material for hydrogen evolution reactions (HER) and oxygen evolution reactions (OER). The Ni–Co alloy coatings were electrodeposited on copper substrate from a sulfate bath, using the glycerol as additive. The deposited coatings were then tested …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 1, 2017 · pp. 9–23 Read article
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An Analytical Approach to Calculate the One-Dimensional Drift Velocity in Bubble Columns
Abstract: The design and scale-up of a bubble column reactor require a complete understanding of its complex hydrodynamics, which is influenced by the physical properties of the phases, the operating variables, and the design parameters. Current design procedures for bubble columns involve several steps of pilot-plant experimentation, which is expensive and time-consuming. One of the critical unknown parameters involved in designing any gas-liquid system is the gas holdup. The gas holdup …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 1–9 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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Design of Batch Reactors for Pulping of Plantain Pseudostem
Abstract: Plantain pseudostem has little application in Africa and constitute major domestic waste and often problematic to manage. It however contains a high content of lignocellulose that can be used for production of pulp. With the geometric decline of feedstock for pulp production due to dwindling wood resources, plantain pseudostem becomes a ready alternative. This study developed design models for batch reactor for the plantain pulping process under isothermal, non-isothermal and …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 2, 2022 · pp. 1–8 Read article
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Physico-Mechanical Performance of Waste Plant Fiber Reinforced Thermoplastic Composites for Automotive Applications
Abstract: To maximize the interfacial bond strength, it is necessary to investigate the direct relationship between the degree of fiber-matrix adhesion and the mechanical and fracture behavior of composites. In this work, the strength of the interfacial bond between polypropylene (PP) and waste plant fiber (Dharose plant fiber, DF) that have been subjected to ultraviolet radiation (UV) was established. By using hot press molding, unidirectional composites of PP with dharose plant …
Published in International Journal of Chemical Engineering and Processing · Vol. 9, Issue 1, 2023 · pp. 14–24 Read article
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Bioethanol Production from Corncob Cellulosic Biomass: RSM and ANN based Optimization for Dilute Acid Pretreatment
Abstract: To increase the yield of fermentable sugars, the complexity of lignocellulosic biomass requires a pretreatment method. Dilute acid hydrolysis was used to efficiently pretreatment corn cobs. The aim of this study was to characterize corncob and investigate the effect of process parameters on total reducing sugar (TRS) yield during dilute acid hydrolysis pretreatment of corncob biomass. The morphology and microstructure of the samples were examined using an X-ray diffraction machine, …
Published in International Journal of Chemical Engineering and Processing · Vol. 9, Issue 2, 2023 · pp. 16–34 Read article
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Pyrolysis Characteristics and Isoconversional kinetics of kusum deoiled seedcake.
Abstract: The pyrolysis characteristics and kinetics of kusum de-oiled seed cake were conducted using a Thermo gravimetric analyzer. Thermogravimetric analysis of biomass was carried out at three different heating rates of 10, 20, 30, ̊ C/min from 28 ̊ C to 1000 ̊ C under N2 atmosphere. The results indicated that the biomass was decomposed in the temperature range of 270 ̊C to 520 ̊ C and further decreased when temperature …
Published in International Journal of Environmental Chemistry · Vol. 2, Issue 2, 2016 · pp. 9–17 Read article
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Assessment of Groundwater Quality Affected by Open Dumping Site in Hyderabad Pakistan
Abstract: The present study has been conducted to evaluate the different samples of groundwater, surface leachate and Soil, for the determination of chemical parameters of surface leachate and their effects on soil using X-Ray Fluorescence spectroscopic (XRF) technique. Samples were collected from the vicinity of unregulated dumping site area of Hyderabad, Pakistan. Different chemical and elements including essential trace and toxic were determined. The impact assessment of leachate on the quality …
Published in International Journal of Environmental Chemistry · Vol. 5, Issue 1, 2019 · pp. 23–30 Read article