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872 articles for “parameters”
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Nanocoating and Electrospraying Techniques Used for Corrosion Mitigation of Aluminum in Nitrogen dioxide Environment
Abstract: Nitrogen gas absorbs moist air to produce nitric acid. It develops acidic medium for aluminum. It forms a corrosion cell on the surface of aluminum. The formation of corrosion cell is written as: Al|Al+3||H+|H2 thus Corrosion reactions accelerate on aluminum surface and Al is oxidized into Al+3 and the H+ ions is reduced into H2. This acid produces various forms of corrosion in aluminum like galvanic, pitting, stress, crevice, blistering, …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 20–31 Read article
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Determination of the Flow Velocity Resistance in Non- Submerged Woody Plants
Abstract: Vegetation on the bank of a river or stream has a major influence on resistance, velocity distribution,and turbulence force. The resistance to flow in open channels depends on different channel and flow parameters. Out of many factors, vegetation is the mainly important parameter in open channels. In this study have been five points to measure the velocity in the channel. The experimental work has been done by a rectangular channel …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 1, 2022 · pp. 1–7 Read article
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Mechanical Studies and Thermal Kinetics of Isoniazid Crystals
Abstract: Single crystals of isoniazid were crystallized by slow solvent evaporation method. The crystal structure was confirmed using single crystal X-ray diffraction analysis. Micro hardness was estimated and work hardening coefficient and Newtonian resistance pressure of the crystal were determined. Kinetic analysis of the thermogravimetric data was carried out by using Coats-Redfern relation. Activation energy, frequency factor and order of reaction were also calculated. Arrhenius equation for isoniazid is k=0.43×105e–79103/RT mol–1s–1. …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 1, Issue 1, 2015 Read article
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Synthesis and Characterization of Cadmium exchanged Sodalite
Abstract: Cadmium derivative of chloro sodalite, has been synthesized at low temperature by hydrothermal method. The sodalite is characterized by IR, X-ray powder diffraction and SEM. The Cd derivative was obtained by facile exchange of cadmium for sodium in chloro sodalite using a solution of cadmium nitrate in Teflon autoclaves at 100oC. The IR spectra of parent gallo silicate chloro sodalite and cadmium exchanged chloro sodalites shows three kinds of IR …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 2, Issue 1, 2016 Read article
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The Thermodynamic Studies of Derivative of Thiabendazole in 1, 4 Dioxane System in the Temperature Range 303 to 323 K
Abstract: Densities, viscosities of some derivatives of thiabendazole in 1, 4 dioxane were measured in the temperature range 303 to 323 K. The viscosity was determined by John-Dole equation. The data has been used to calculate thermodynamic parameters. G and H are negative and S is positive which indicate the spontaneity of reaction according to thermodynamics. Keyword: thermodynamic parameters, free energy change, enthalpy change, entropy change
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 1, Issue 1, 2015 Read article
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Examination of White Specie Onion for Production of Oil: Integration for Pharmaceutical Production
Abstract: Research work was carried out to examiner the characteristics of oil produced from white specie of onion obtained in Nigeria. The following functional parameters were examined with therefractive index of 1.34926, density of 1.1036g/cm3, viscosity of 2.45cst, iodine value of 28.1083%, saponification value of 10.94%, free fatty acid (FFA) of 11.264%, peroxide value of 45% and acid value of 2.104%. The result obtained reveals the significance of white onion specie …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 1–14 Read article
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Design of a Continuous Stirred Tank Reactor for Acetic Acid Production Using Homogeneous Catalyzed Reaction
Abstract: The carbonylation of methanol to give acetic acid is one of the most important homogeneously catalyzed industrial processes. Detailed work has been carried out by researchers on its kinetic study and attempt to increase the activity of the catalyst. In this work attention is focused on the design of a continuous stirred tank reactor (CSTR) for the production of 210, 000 tons per year of acetic acid. At a maximum …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 1, 2021 · pp. 17–38 Read article
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Valorization of agro-industrial waste into bioethanol: a case of brewers spent grain
Abstract: AbstractThe global impetus to produce alternatives to petroleum-based fuels and value-added chemicals to reduce greenhouse gases are putting pressure on the industries to diversify and valorize byproducts. By-products valorization of the brewery industry such as spent grain has given critical attention for long-term socio-economic and environmental benefits. Brewer`s spent grain is the major by-product of the brewing industry, represses around 85% of the total by-product generated. In the current work, …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 1, 2020 · pp. 1–20 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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Examining the Rate of Change of Some Physicochemical Properties of a Polluted Water Environment as a Result of Crude Oil Spill
Abstract: This study was designed to look at how the physicochemical characteristics of the aquatic environment changed as a result of crude oil spillage. Samples were collected for analysis of physicochemical parameters, Total Dissolved Oxygen, Total Bacteria Counts (TBC) and Total Petroleum Hydrocarbon (TPH) content etc., for a period 84 days at 14 days intervals. Over the course of the analysis, the value of oil & grease varied between sampling points …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 29–34 Read article
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Model Analysis of Bacteria Growth Rate in Polluted Stagnant Water Environment
Abstract: The Total Bacteria Count (TBC) analysis was carried out to investigate growth rate of microorganism in the stagnant water media. The analysis was also conducted to ascertain if the polluted water media can favour the growth bacteria, and hence, assist in the degradation Total Petroleum Hydrocarbon (TPH) content in water. The bacteria growth was slow from day 1 up to day 56, but began to increase rapidly between 70th and …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 11–17 Read article
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Examination of Root Cause of Fuel Tanker Truck Accident in Nigeria: The Concept of Reliability of Non-Human Factor
Abstract: The non-human factor in terms of fuel tanker truck accident in some area of Nigeria was investigated to know the root cause as well the contributing factors and to project the way forward to mitigate the menace, because at the end human life are lost. This investigation was addressed by applying the concepts of reliability, probability and relative accident consequence, in which the mean time between accident, accident rate and …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 1–10 Read article
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Modification of Cubic Equations of State for Polar Compounds
Abstract: Abstract Volumetric properties of substances are crucial thermodynamic parameters in that they aid personnel to compute other thermodynamic parameters like internal energy, enthalpy, entropy, etc. Moreover, these are required in the design of process equipment and in the sizing of pipelines. In 1873 van der Waals proposed an equation to predict volumetric properties of idealized gases. Hitherto, a plethora of such equations known as cubic equations of state have been …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 1, Issue 2, 2015 · pp. 1–11 Read article
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Simplified Models for Some Thermodynamic Properties of Saturated Water in a Pressurized Water Reactor
Abstract: The properties of water and steam in a pressurized water reactor (PWR) need constant monitoring to understand what goes on in the PWR. Such properties include the thermodynamic properties, namely, specific volume, specific enthalpy, specific entropy and specific heat. This work is focused on calculating these properties of saturated water by using a simplified model within the temperature range that is applicable to PWR. The model parameters for each property …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 1, Issue 1, 2015 · pp. 10–15 Read article
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Model for Prediction of Pneumatic Proportional Integral Controller Transfer Function for Step Input Process Response
Abstract: Mathematical model was developed to monitor, predict and simulate the pneumatic proportional integral controller transfer function for step input process response. The model developed was based on the geometric arrangement as well as the distance of the flapper from the nozzle was considered to be small, where the capacitance C is constant and R is the resistance of the integral restrictor. The characteristics of the process was monitored, predicted and …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 28–37 Read article
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Review of Reactive Extraction Process for Recovery of Pyruvic Acid
Abstract: Pyruvic acid having a molecular formula (C3H4O3) is an important alpha-keto-carboxylic acid. It is mainly manufactured by biotechnological routes or chemical synthesis. There are number of applications of pyruvic acid in the industrial sector such as chemical, food, cosmetic and agriculture sector. The main problem for the production of pyruvic acid from the fermentation broth is downstream processing. The number of techniques developed to recover this acid from their aqueous …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 1–7 Read article
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Effect of Pressure on Insulation Failure and Pipe Leakage in Natural Gas Transmission Pipeline Using Simulation Software
Abstract: Effect on insulation failure and pipeline leakage in natural gas transmission line using simulation software known as EXTENDSIM9 SUIT was applied to monitor, predict and simulate the variation in pressure in a pipeline system. The computational fluid dynamics parameters for the flow of compressible gas in a pipeline includes density and pressure which changes along the transmission line due to frictional resistance, and may lead to fogging/ hydrate formation or …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 24–37 Read article
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Examination of conversion of Ethanol into Diethyl – Ether Product
Abstract: Investigation was conducted to examine the rate of diethyl-ether production from ethanol using the approach of vapour-phase dehydration. The following functional parameters were examined to determine the significance on the production of diethyl-ether from ethanol on the concept of vapour-phase dehydration. The functional parameters are space time, space velocity, heat generated per unit volume, reactor length, weight of catalyst and fractional conversion. The result obtained from the investigation demonstrates the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 10–18 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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Investigation of Mass Transfer Coefficient and Gas Hold Up and Bubble Size Distribution in Novel Design of Stirred Tank Reactor
Abstract: Stirred tanks are commonly used in chemical industries for reaction and separation. Large-scale reactors include many impellers to improve mixing performance. Agitator plays an important role during the gas-liquid contact in two phase flow. And it is very necessary to know for the understanding of any gas-liquid system. So, in this study my motto is to study which parameters affects in the mixing of gas inside the liquid. The parameters …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 2, 2022 · pp. 5–12 Read article