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791 articles for “Ratings”
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Biokinetic Model of Crude Oil degradation: The Integration of Moringa-Alcohol-Water Root Extracts
Abstract: Mathematical model was developed to study the crude oil degradation on the effect of moringa-alcohol-water root extracts. In different soils environment of Niger Delta area of Nigeria. The mass of moringa in alcohol and water used for this research work is 500g and 600g. In all cases the decrease with increase in the period of exposure (Time) for remediation of the contaminated soil types studied for the first order rate …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 1–12 Read article
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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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Bioremediation of Polluted Drainage with Petroleum Hydrocarbon
Abstract: This research was aimed at examining the petroleum product discharge in drainage within Port Harcourt City, samples were collected and mixed. Microbial analysis and physicochemical properties of the sample were determined. The sample was subjected into bioremediation after culturing of the microorganisms isolated, identified and characterized. The two microorganisms used are pseudomonas aeruginosa and aspergillus niger. The results obtained revealed high concentration for heavy crude oil than mixed crude oil; …
Published in International Journal of Environmental Chemistry · Vol. 7, Issue 2, 2021 · pp. 24–34 Read article
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Investigation into the Kinetics of Biodegradation of Crude Oil Hydrocarbon in Different Soil Types Using Aloe Vera
Abstract: A pilot study was conducted on three different soil type contaminated with crude oil bio-simulated with Aloe vera juice to examine the effect of the stimulant on the rate of degradation of the crude oil by the indigenous microbes. Soil contaminated with crude is deficient of the essential nutrients which are needed to boast the activities of the microbes which feed on the crude. These nutrients are found in Aloe …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 2, 2018 · pp. 10–21 Read article
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Electrotrophs that Thrive in High Temperatures for the Microbial Electrosynthesis of Organic Materials (Microbial Electrosynthesis)
Abstract: Electrotrophs are a type of microorganism that can use electrons as an energy source for metabolic processes, such as the synthesis of organic compounds. This makes them ideal for use in microbial electrosynthesis (MES), a technology that harnesses these organisms to produce valuable chemicals and fuels from carbon dioxide and other renewable sources. Microbial electrosynthesis is a viable technique for converting carbon dioxide to various organic products and transportation fuels, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 8, Issue 2, 2022 · pp. 30–35 Read article
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Monitoring the Operation of Mobile Air Compressor Component of Filters Using Reliability Analysis Concepts
Abstract: The performance of filter component was monitored in a mobile air compressor operating in a gas plant facility located in Rivers State. The investigation covers the monitoring of the numbers of failure, downtime, and computation failure rate, mean time between failure, reliability, unreliability, availability and unavailability. In this study, it was experienced that the failures occur due to over usage as well as presence of particles in the cooling fluid …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 18–22 Read article
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Characterization and Kinetic Study of Sugarcane Bagasse for the Production of Bio-oil Over Monodispersed Fe2 O3 and ZSM-5 Composite
Abstract: The shortage and price scramble of fossil fuels accompanied by vast CO2 emissions have triggered a worldwide search for alternative and sustainable resources. Wind, solar, geothermal, biomass, and water are the most commonly used alternative energy sources. The biomass residues are typically at low cost and readily availabile, and has been used as feedstocks for synthesis of renewable energy. To produced the bio-fuels from biomass residues, several reaction pathways categorized …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 2, 2023 · pp. 1–13 Read article
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The decomposition of tris-(oxalato)-manganate (III) complex ion as the reaction suitable for the laboratory practice on chemical kinetics
Abstract: The complex ion [Mn(C2O4)3]3- is very photosensitive and rapidly decomposes at the daylight even at ambient temperatures. Although the mechanism of this reaction is complicated, its kinetic equation obeys the pseudo-first order. In addition, the tris-(oxalate)-manganate ion has a low thermal stability, and the reaction of its decomposition is highly affected by temperature. This makes this reaction very suitable for demonstrating the laws of chemical kinetics to the students – …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 2, Issue 2, 2016 · pp. 1–10 Read article
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Kinetic and Mechanistic Study of Oxidation of Benzydamine Hydrochloride by Permanganate (VII) in Acidic Medium
Abstract: The kinetics and mechanism of Permanganate (Mn (VII)) oxidation of Benzydamine hydrochloride (B.HCl) in acidic medium has been studied at 26 ± 0.1°C. The reaction shows first order dependence in [Mn (VII)], less than unit order in [B.HCl] and fractional order dependence in [H2SO4]. Variation of ionic strength by the addition of KCl has no significant effect on the rate. The stoichiometry of the reaction is found to be 1:4 …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 2, Issue 2, 2016 · pp. 20–28 Read article
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Kinetics of oxidation of mixture of oxalic acid and glutaric acid by chromic acid in presence of sodium chloride and potassium chloride
Abstract: Effect of Sodium Chloride and Potassium chloride on the co-oxidation of oxalic Acid and glutaric Acid by Chromic Acid has been studied. The products are carbonyl di carboxylic Acid and Carbon dioxide. The rate of oxidation decreases with the increase in the concentration of Sodium Chloride and Potassium Chloride. It is found that Potassium Chloride is the most effective in retarding the reaction rate comparison to Sodium Chloride. The order …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 4–8 Read article
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Development of Biokinetic Model for Crude Oil Remediation using Neem-Water-Alcohol Root Extracts
Abstract: Model was developed to examine the degradation of crude oil in different soil environment using Neem roots extract subjected in fermentation for a period of one week. The Neem roots extract of 500g and 600g was used in carrying out the research work and both was extracted from fermented Neem roots in alcohol medium. The reaction mechanism was tested using first order rate constant with Neem treatment in both solvent …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 2, 2020 · pp. 1–15 Read article
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Design of a Plug Flow Reactor for Production of Refrigerants from Natural Gas Chlorination
Abstract: The design of a plug flow reactor and distillation column for the production of refrigerants from natural gas chlorination, was aimed at achieving high purity volume percent of Methyl Chloride (CH3Cl) and Methylene Chloride as desired products. Aspen HYSYS software was used to simulate the reactor. The reaction was carried out at a temperature of 3000C and 1atm Pressure, Methane to Chlorine ratio was set at 1.5:1 to favour the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 10–22 Read article
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Effect of magnetic pole direction on the properties of magnetized water concrete
Abstract: This project aimed to study the variations in properties of concrete when magnetized water was being used instead of normal water, and also compare the effect of the magnetic pole on magnetized water concrete. In this research, based on reviewed literature, magnetized water was prepared by filling a glass beaker with water and then placing magnets at the sides of the container for the required number of hours. Sieve analysis …
Published in International Journal of Concrete Technology · Vol. 6, Issue 1, 2020 · pp. 16–22 Read article
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Modeling 28 Days’ Curing Compressive Strength of Concrete Partially Replaced with Palm Kernel Shell as Aggregate Influenced by Porosity
Abstract: Twenty-eight days of curing to determine compressive strength of concrete were carried out throughthe application of modeling and simulation. The development of concrete compressive strength wascarried out by integrating palm kernel shell (PKS) as partial replacement for aggregate. Studies weremonitored to determine its rates of strength development by partially replacing PKS at differentpercentage of 5%, 10%, 15%, 20%, and 25% to determine the optimum compressive strength withinthe applied percentage of …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 26–40 Read article
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Effect of Varying Shear Velocity on the Mechanical Behavior of Jointed Rock Subjected To Lower Normal Load
Abstract: : This study investigates the effect of shearing velocity on the mechanical behavior of rock joints, namely, the shear strength, residual strength, joint dilation, its surface roughness and the shearing stiffness under the application of lower normal load. The slower rate of shearing plays an important role in creep and the fatigue effect on jointed rock masses whereas, higher rate of shearing is experienced in the cases of dynamic loadings …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 2, Issue 1, 2016 · pp. 1–11 Read article
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Predicting the Influence of Permeability’s on Settlement of Shallow Foundation
Abstract: Foundation settlement rose as soil permeability increased, excess pore pressure increased with depth, and decreased as shear modulus increased. The expanding soil cycle (shrinkage and expansion) that is principally responsible for foundation settlement is strongly related to water content. The application of modeling and simulation was used to monitor the effect of various soil properties on foundation settlement. But the focus of this study is on Permeability including other soil …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 9, Issue 1, 2023 · pp. 36–54 Read article
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Visual Assessment of Pavement Surface Condition for Baghdad International Airport
Abstract: Abstract In the process of developing the infrastructure of Baghdad international airport, visual assessment was undertaken to evaluate the concrete pavement surface condition. The walk through technique was implemented, all types of pavement distresses have been detected visually and captured with camera of high resolution. It was observed that the block and fatigue cracking of pavement surface was concentrated at the threshold part (touch down zone) of the runway, while …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 2, Issue 1, 2016 · pp. 1–9 Read article
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Two Wheeler Adjustment Factor to Estimate Queue Length at Signalized Intersection under Heterogeneous Traffic Conditions
Abstract: The two-wheeler adjustment factor derived in the present study to predict queue length at approaches of signalized intersections in mixed traffic conditions. The statistical distribution investigation carried out to understand the queuing behavior by using observed queue length obtained from the field. Field data was collected at Suchitra and KBR park intersections in Hyderabad City by using video graphic technic. Highway Capacity Manual (2010) adopted for estimating queue length with …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 7, Issue 2, 2021 · pp. 15–21 Read article
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EFFECTS OF LOW FREQUENCY ULTRASOUND TREATMENT IN MITIGATING SULFATE REDUCING BACTERIA
Abstract: Biocorrosion is associated to microorganism such as Sulfate Reducing Bacteria (SRB) presence in the environment and cause deterioration of metallic and non-metallic materials. Chemical bactericides are commonly used to mitigate SRB in the treatment process of oilfield but this method comes with disadvantages such as lower in efficiency, environment pollution, high cost and health problems. This paper shows a systematic investigation of 20 kHz frequency Ultrasound (US) performance as an …
Published in International Journal of Water Resources Engineering · Vol. 4, Issue 2, 2018 · pp. 1–6 Read article
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Analysis of Trend in Rainfall Data using Mann-Kendall Test and Linear Regression Method
Abstract: Rainfall is a vital part of the hydrologic cycle and changes in its pattern directly influence the water resources of concerned regions. Changes in rainfall response as a result of climate change that gives alarming to hydrologists and water resource managers as these changes in rainfall quantity and frequency are altering the pattern of stream flows and demands, spatial and temporal distribution of runoff, soil moisture, etc. The drastic changes …
Published in International Journal of Water Resources Engineering · Vol. 8, Issue 2, 2022 · pp. 39–44 Read article