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38 articles for “isotherms”
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Isothermal CSTR Heat Exchanger Rating Models for Acetic Acid Production using Homogeneous Catalysed Reaction
Abstract: This work deals with the development of design models for heat exchanger rating in homogeneouscatalytic acetic acid production at isothermal condition exploiting the derived continuous stirred tankreactor heat generation per unit volume equations at constant temperature. Coil in tank heatexchanger is invoked for this study resulting to novel design equations which were stochasticallyexamined and found to be capable of simulating the rating performance dimensions as a function ofkinetic parameters. The …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 1, 2021 · pp. 14–28 Read article
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Radiation and Chemical Reaction Effect on MHD Flow Past an Accelerated Isothermal Inclined Plate in a Rotating Fluid with Variable Mass Diffusion
Abstract: In this paper, we present radiation, chemical reaction and rotation effects on unsteady MHD flow past an accelerated isothermal inclined plate with variable mass diffusion. The non-dimensional governing equations are solved using Laplace transform method. The velocity, temperature and concentration profiles are discussed for various physical parameters like, radiation parameter, chemical reaction parameter, rotation parameter, Prandtl number, Schmidt number and time. Finally, physical quantities such as Nusselt number and Sherwood …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 1, 2017 · pp. 1–14 Read article
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Evaluation of Adsorption Isotherm Parameters on Corrosion Rate of Metal using Water-Based Extracts as an Inhibitor in Acidic Medium
Abstract: The research showcases the evaluation of MCS metal corrosion rate in terms of the effect of temperature and adsorption isotherm parameters monitored using water-based extracts with the aim to predict the Gibb’s free energy characteristics on inhibition integrity of the metal sample in acidic medium of 1.0M of HCl The water-based extract used are Selaginella myosurus, SM and Pneumatopter is pennigera, GF and the inhibition performance with respect to temperature …
Published in International Journal of Polymer Science and Engineering · Vol. 9, Issue 1, 2023 · pp. 14–25 Read article
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Lead (II) Ion Biosorption from Aqueous Solution ontoHexadecyltriammonium Bromide (HDTMA-Br) Modified Dry Water Hyacinth
Abstract: Heavy metal release into the environment by industrial activities has become a persistent problem,with these contaminants continually increasing in concentration. Heavy metals not only circulatethrough ecosystems but also accumulate in organisms over time, which elevates their toxic effectsalong the food chain. This research was conducted to explore the efficiency of biosorption inremoving lead (II) ions from aqueous solutions using water hyacinth powder modified withhexadecyltriammonium bromide (HDTMA-Br), a cationic surfactant. The …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 10, Issue 2, 2025 Read article
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Comparative Biosorption Analysis of Chicken Feathers and Absorbent Pads on Crude Oil Contaminated Soil
Abstract: The study was done for the biosorption of hydrocarbon contaminated soil using chicken feather waste (CFW) and adsorbent pad adsorbents (AP). The adsorbents materials were sourced locally and prepared accordingly and made ready for the adsorption process. To analyze the adsorption of crude oil from contaminated soil, the following time intervals were used: 0 weeks, 4 weeks, 8 weeks, 12 weeks, 15 weeks, and 20 weeks. Additionally, varying amounts of …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 10, Issue 2, 2024 · pp. 13–33 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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Fabrication of a Novel and Efficient Radiation Grafted Functionalized Polymer Adsorbent and Investigation of its Applicability in the Adsorptive Removal of Cr (VI) Ion from Aqueous Solution
Abstract: The grafting of glycidyl methacrylate (GMA) onto non-woven polyethylene (PE) fabric was accomplished using a radiation-initiated grafting technique. The grafted textiles were allowed to react using triethylamine to create functioning amine groups. Upon bond formation yield, the impact of grafting intensity has been examined. Utilizing the appropriate technologies, such as FTIR, TGA, and SEM, the adsorbents were rigorously examined. There was evidence of GMA grafting and diamines according to FTIR, …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 1, 2022 · pp. 1–15 Read article
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Synthesis and Characterization of Poly(vinylpyrrolidone) / Starch / Dimethylacrylamide Hydrogel by Gamma Radiation and Its Application in Basic Fuchsin and Methyl Orange Removal
Abstract: Gamma radiation was used to create a number of PVP/Starch/Dimethylacrylamide (PSD) based hydrogels. Investigated were the effects of several parameters, such as radiation dose, material composition, and pH, on the characteristics of hydrogels, such as gel content and swelling behavior. Radiation doses ranged from 10 to 25 kGy, and 10 kGy was determined to be the ideal dose. Investigations on the impact of dimethylacrylamide (DMA) composition on swelling were investigated. …
Published in International Journal of Polymer Science and Engineering · Vol. 9, Issue 2, 2023 · pp. 1–20 Read article
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A method to determine kinetic triplet by coupled with model-free method and model-fitting method
Abstract: The present study is aimed to obtain integral linear method using rational expressions given by Senum and Yang, and a method of selecting the reaction model more quickly and easily and compute the activation energy and pre- exponential factor more accurately was proposed. An improved linear integral procedure coupled with one model-free method and one model-fitting method for the determination of kinetic triplet using non-isothermal data recorded at several heating …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 1–13 Read article
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Applications of Sesame Residues as Sorbents for Oil Removal from Produced Water
Abstract: Large amounts of produced water are produced in tandem with the production of crude oil. Both dissolved and dispersed oil are present in produced water, which can contaminate the environment and pose health risks to people. In this study, the oil component, cadmium, and lead ions were extracted from the generated water using sesame residues and agricultural wastes. The sesame residues were dried, size-reduced, and ground. Standard techniques were used …
Published in International Journal of Agrochemistry · Vol. 11, Issue 1, 2025 · pp. 5–16 Read article
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Green Corrosion Inhibitors for Mild Steel in Acidic Media-A Short Review of Literature
Abstract: Corrosion of metals and alloys is an inevitable phenomenon due to metal’s natural tendency to revertback to combined state to attain stability. The article focuses on briefly reviewing few of the greencorrosion inhibitors reported for mild steel in acidic media over last three years. The measurementmethods for evaluation of corrosion rates practically and theoretically are mentioned in the article.The mode of adsorption of the inhibitors and the proposed adsorption isotherm …
Published in International Journal of Green Chemistry · Vol. 7, Issue 1, 2021 · pp. 27–30 Read article
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Iron Pillared Clay for Sorption of Toluene in Aqueous Solution: Kinetics and Equilibrium Studies
Abstract: The adsorption of toluene using unmodified and Fe-pillared clay were investigated in this study using UV/Visible, FT-IR spectroscopic measurements and batch adsorption process. The framework vibration of the clay before and after pillaring were determined using FTIR spectra. Effect of Contact time and initial and various concentration of toluene at constant temperature were investigated. The experimental data were studied using equilibrium isotherm (Langmuir and Freundlich) and kinetics models (pseudo first …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 1, 2022 · pp. 1–10 Read article
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Application of Acid Treated Carbon Derived from Biomass (Lantana camara) for Removal of Phenol from Aqueous Solutions
Abstract: The presence of phenolic compounds is toxic and harmful to human health and aquatic life. Five biomass: cotton stalk, rice straw, bagasse, wheat straw and Lantana camara were characterized. Based on characterization and availability, Lantana camara (LC) was selected for study as an adsorbent. LC and activated Lantana camara (ALC) were further characterized and studied for their suitability as the commercial adsorbent for removal of phenol. Equilibrium study on ALC …
Published in International Journal of Environmental Chemistry · Vol. 3, Issue 1, 2017 · pp. 1–8 Read article
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Thermodynamic Analysis of an Adsorption Refrigeration System
Abstract: In this paper, thermodynamics analysis of an adsorption refrigeration pair (activated carbon and methanol) at adsorption equilibrium conditions has been proposed. Similar analyses have been done by different scientists for different combinations of adsorbent-adsorbate pairs. Adsorption refrigeration processes normally occurs in physical adsorption condition and activated carbon molecules being nonpolar in nature, micropores approach of adsorption (Polanyi’s micropores theory and D-A equation) has been followed here. Analysis of the adsorption …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 1, Issue 1, 2015 · pp. 1–9 Read article
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Thermodynamic Techniques in Food Chemistry – A Review
Abstract: The thermal activities of food strongly depend on its composition. The aims of food processing are to inactivate spoilage and pathogenic microorganisms and to sustain this condition in storage. Using calorimetric techniques, many physicochemical effects can be detected in the temperature range between -50°C and 300°C. Biophysical techniques viz., isothermal titration (ITC) and Differential Scanning Calorimetry (DSC) are used to characterize the structure and properties of food materials before and …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 1–6 Read article
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Tetrahydro-dibenzo[a,d][7]annulene-5,11-dihydrazone and Magnesium oxide Used to Control the Corrosion of Aluminium in Chloride ions Environment
Abstract: Chloride ions interact with aluminium in marine atmosphere to form corrosion cell. Due to this corrosion reaction occurs on their surface, aluminium is oxidized into Al3+. The corrosion reaction accelerates deterioration in metal and it produces galvanic, pitting, stress, crevice, intergranular corrosion. Chloride ions decrease internal and external strength of aluminium metal. It is a very important metal so used in different appliances for e.g. road, water, air transports, housing, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 2, 2020 · pp. 35–48 Read article
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Study of Corrosion and Corrosion Protection of Rebar Steel in Saline water
Abstract: Corrosion is major problem with metals. When they come in contact of surrounding corrosive medium to construct a corrosion cell on their interface, metals undergo in corrosion reactions. Such environments metals can be exhibited uniform, galvanic, pitting, stress, crevice, embrittlement, intergranular corrosion etc. The corrosion of phenomenon of rebar steel studied in saline water. It creates corrosive medium for rebar steel due to availability of chloride ions. Rebar steel is …
Published in International Journal of Metallurgy and Alloys · Vol. 11, Issue 2, 2025 · pp. 1–11 Read article
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Thermo-Acoustic Investigation of Molecular Interactions in Aqueous Solutions of L-Histidine at Different Temperatures
Abstract: The present study investigates the acoustic and thermodynamic behavior of aqueous solutions of L-Histidine across a concentration range of 0.01 m to 0.1 m and temperatures varying from 293.15 K to 318.15 K in 5 K intervals. Ultrasonic velocity (μ), density (ρ), and viscosity (η) measurements wereconducted with high precision to understand the solution behavior under different thermal conditions.Temperature constancy during measurements was ensured using a refrigerated circulatory bath withwater …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 2, 2025 · pp. 9–17 Read article
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Design and Analysis of Metal-Organic Frameworks for Gas Adsorption and Storage
Abstract: Metal-Organic Frameworks (MOFs) represent a class of highly porous materials formed by the coordination of metal ions with organic linkers, exhibiting exceptional potential for gas storage applications due to their high surface area, tunable pore sizes, and structural versatility. The synthesis and characterization of MOFs intended for the effective storage of gases like carbon dioxide, methane, and hydrogen are the main topics of this work. Solvothermal Hectic strategies, including solvothermal, …
Published in International Journal of Metallurgy and Alloys · Vol. 10, Issue 1, 2024 · pp. 25–30 Read article
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Eco-Friendly Corrosion Inhibition of Aluminum Alloys with Acacia nilotica in Acidic Media
Abstract: Gravimetric analysis was used to examine the corrosion inhibitory effects of Acacia nilotica extract in 0.5 N H2SO4 on aluminum alloy at different concentrations and at 303 K. At a corrosion inhibitor concentration 0.45% at 303 K, the inhibition efficiency is found to be remarkably high (52.25%). Results show that the extract's capacity to inhibit was caused by its adsorption onto the metal surface via the Langmuir adsorption process. For …
Published in International Journal of Metallurgy and Alloys · Vol. 10, Issue 1, 2024 · pp. 31–37 Read article