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267 articles for “degradation”
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Crude Oil Degradation on the Influence of Palm oil-Fermented Wastewater Used as Biostimulant
Abstract: *Author for CorrespondenceUkpaka Chukwuemeka Peter E-mail: [email protected] The total petroleum hydrocarbon (TPH) degradation was monitored in a batch reactor with the addition of biostimulants like palm oil processed wastewater (POPWW) acting as nutrients, to effectively enhance high efficiency in contaminants remediation in clay soil. The kinetic components were evaluated in terms of specific rates of petroleum hydrocarbon degradation, maximum specific rate of total petroleum hydrocarbon degradation as well as the …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 47–60 Read article
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Total Petroleum Hydrocarbon Degradation with the Action of Bio-stimulant using NPK Fertilizer
Abstract: The total petroleum hydrocarbon degradation with the action of bio-stimulant using NPK fertilizer was monitored with respect to different concentration of dosages. The nature of the curve in relationship to the establishment of the equation of the line as well as the square root of the best of each line or curve was considered. The application of this concept enhanced the determination of the kinetic values of each bioreactor process, …
Published in International Journal of Green Chemistry · Vol. 12, Issue 1, 2026 · pp. 26–33 Read article
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Evaluation of Kinetic Parameters of Total PetroleumHydrocarbon Degradation Using Grape Leaf as Nutrientto Catalyze the Reaction
Abstract: The outcomes of the research are to determine and evaluate the kinetic parameters of total petroleum hydrocarbon degradation using grape leaf as nutrient to catalyze the reaction. The application of the Michaelis–Menten model equation in combination with the Lineweaver–Burk Plot theoretical conceptual techniques was adopted in handling the computation of the functional parameters and coefficients of the system. The impact of bio-remediant dosage was monitored, and the kinetic parameters were …
Published in International Journal of Chemical Engineering and Processing · Vol. 12, Issue 2, 2026 · pp. 1–9 Read article
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Experimental Study on Effect of Momentum Transfer Hydrocarbon Degradation in Stream System
Abstract: This research work demonstrates the significance of individual hydrocarbon degradation in a flowing stream system and the effect of the momentum transfer on the concentration of the individual hydrocarbon was examined on the influence of period of exposure (time) on the environment as well as the distance of dispersion. The substrate concentration variation was monitored with respect to time and distance as well as reciprocal of the substrate established by …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 2, 2020 · pp. 47–55 Read article
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Computation of Biokinetic Parameters of Total Petroleum Hydrocarbon Degradation using Vernonia amygdalina Stem
Abstract: This investigation showcases the computation of biokinetic parameters of total petroleum hydrocarbon degradation using Vernonia amygalina stem as bio-stimulant for the remediation of contaminants in loamy soil environment. The research revealed decrease in TPH degradation with increase in contact time and the percentage reduction was computed. The result shows TPH (100 dosage) > TPH (75g dosage) > TPH (50g dosage) > TPH (25g dosage) > TPH (control sample) and the …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 9, Issue 2, 2023 · pp. 26–38 Read article
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Development of Momentum Transfer and Kinetic Model for Hydrocarbon Degradation in a Flowing Stream
Abstract: ABSTRACTA momentum transfer and kinetic model for prediction of individual hydrocarbon degradation in a flowing stream system has been developed in this study. This model was developed to monitor, predict and simulate degradation of individual hydrocarbon in most flowing streams in the Niger Delta region of Nigeria. The model was developed from first principle using plug flow reactor concept. It was simulated with MATLAB R2007b software using data of crude …
Published in International Journal of Chemical Separation Technology · Vol. 6, Issue 2, 2020 · pp. 17–34 Read article
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Studies on the degradation of jute blended cotton fabric in soil, water and ambient atmosphere
Abstract: Although, we are more concern about the environment pollution, we cannot reduce the use of pollutant in a significant limit. The use of bio-degradable materials is one of the best methods to reduce environmental pollution. In our present research we tried to find biodegradable materials, jute and cotton, to keep our environment pollution free. We also showed the effect of environment on the degradation properties of the mentioned materials. The …
Published in International Journal of Environmental Chemistry · Vol. 4, Issue 2, 2018 · pp. 1–11 Read article
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Evaluation of Michaelis-Menten Constants of TPH Degradation on Clay Soil
Abstract: The degradation of Total Petroleum Hydrocarbons (TPH) in petroleum-contaminated clay soil remains a major environmental concern, particularly in regions with limited remediation options. This study investigates the enzymatic kinetics of TPH biodegradation using Michaelis-Menten modeling in the presence of Bryophyllum pinnatum leaf extracts as biostimulants. Fourteen bioreactors containing 2000g of contaminated clay soil were prepared with 100ml of crude oil and treated with varying doses (100ml, 200ml, and 300ml) of …
Published in International Journal of Chemical Engineering and Processing · Vol. 11, Issue 2, 2025 · pp. 6–12 Read article
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TPH Degradation through Bioremediation Using Organic Amendments
Abstract: This study investigates the effectiveness of bioremediation in crude oil-contaminated soils from the Niger Delta region of Nigeria, an area that has long suffered environmental degradation due to recurrent petroleum exploration and oil spills. The research emphasizes the degradation of Total Petroleum Hydrocarbons (TPH) in two distinct soil types – swampy and clay soils – while assessing the influence of various organic and inorganic amendments. Organic amendments, specifically Moringa seed …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 · pp. 40–45 Read article
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Investigation on the Characteristics of Chromolaena Odorata (Awolowo leaf) in Petroleum Hydrocarbon Degradation in Loamy Soil Environment
Abstract: The application of Chromolaena odorata (Awolowo leaf), processed into powder form, was used as a biostimulant for petroleum hydrocarbon degradation and mitigation in a loamy soil environment. In this investigation, the physicochemical and microbial characteristics of the sample were determined, as presented in this research, including pH, electrical conductivity (EC), total nitrogen (T.N), total phosphorus (T.P), potassium (K), total organic carbon, and P. fluorescence. Corynebacterium sp., Arthrobacter, Bacillus, Acinetobacter iwoffi, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 1, 2024 · pp. 13–23 Read article
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Modeling the Biokinetic of Crude Oil Degradation inLoamy Soil Using the Citrus Sinensis of Flavedo Part
Abstract: The biokinetic parameters of crude oil degradation using Citrus sinensis of flavedo part was investigated in loamy soil environment. Mathematical models were developed for the purpose of determining the biokinetic parameters of the k1 (Total Petroleum Hydrocarbon), maximum specific rate of TPH remediation and dissociation constant of the TPH remediation on the effect of remediant dosage on the polluted loamy soil environment. The effect of the remediants were monitored for …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 1, 2024 Read article
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Prediction of Functional Parameters of Vegetable Stem Solid Waste Degradation Using Taylor’s Variable Model
Abstract: Mathematical model was developed to monitor, predict and simulate the functional parameters of vegetable stem solid waste degradation using Taylor’s variable model. Data obtained from the experimental research work was transformed and resolved using Laplace transformation upon the degradation of vegetable stem solid waste. The specific rate of vegetable stem solid waste, maximum specific rate and the disassociation constant rate were evaluated in terms Michaeli’s Menten and Linear method using …
Published in International Journal of Plant Biotechnology · Vol. 4, Issue 2, 2018 · pp. 30–36 Read article
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Simulation of Heat Generated on Crude Oil Degradation upon the Effect of Temperature in Bacteria Growth Kinetics in a Bioreactor
Abstract: Model was established to simulate the heat generated by bacteria with the interaction of substrate (crude oil) degradation in a bioreactor upon the influence of temperature. The model was predicted by simulating the characteristics of bacteria interaction with substrate at temperature of 15oC, 30oC, 45oC, 60oC, 75oC, 90oC, 105oC and 120oC and heat generated is within the range of -1.0 to 7.1kcal/hr for bacteria in fresh water medium whereas for …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 2, 2022 · pp. 39–54 Read article
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Photo-Catalytic Degradation of Dyes Using Graphene Oxide–Dithizone Composite
Abstract: Graphene oxide–dithizone (GO–DTZ) composite was successfully synthesized through the copolymerization of graphene oxide and dithizone to develop an efficient photocatalytic material for wastewater treatment. The dithizone polymer was prepared using a 1:2 molar ratio, while graphene oxide was synthesized via the modified Hummers’ method to obtain highly oxidized graphene sheets with abundant oxygen-containing functional groups. The GO–DTZ nanocomposite was fabricated by ultrasonically dispersing graphene oxide with the synthesized dithizone polymer …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 2, 2026 · pp. 46–53 Read article
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Microbial and Enzymatic Degradation of Polyethylene: Molecular Mechanisms, Omics Approaches, and Biotechnological Applications
Abstract: Abstract: Polyethylene (PE), a commonly used synthetic polymer, is highly resistant to natural breakdown, leading to serious environmental and ecological issues such as soil and marine pollution, the formation of microplastics, and risks to wildlife and human health. Recent efforts have focused on using microbial and enzymatic processes to handle polyethylene waste. Microorganisms such as bacteria (Pseudomonas, Bacillus), fungi (Aspergillus, Penicillium), and algae produce enzymes like laccases, peroxidases, oxygenases, and …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 12, Issue 2, 2026 Read article
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Analysis of the Degradation of Total Petroleum Hydrocarbons (TPH) in a Polluted Stagnant Salt and Fresh Water Environment
Abstract: TPH dispersion in both water media was investigated using a transport model that included convective and diffusion factors. This model was used to track the TPH concentration in both vertical and horizontal dimensions. Therefore, it was expected that diffusion alone would regulate TPH transport or spreading in the x-direction, or horizontal direction, while diffusion and convection caused by gravity would control TPH transport in the vertical direction. As a result, …
Published in International Journal of Chemical Separation Technology · Vol. 9, Issue 2, 2023 · pp. 1–12 Read article
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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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Soil Pollution Leads to Environmental Degradation
Abstract: For the past thirty years, our environment has been degrading. Unwanted human activities are the principal source of environmental damage. Fuels were employed as a source of energy during the industrial revolution, causing environmental devastation. The root cause of environmental degradation is modern technological advancement. Urbanization, population growth, increased energy usage, and agricultural practises are all contributing to environmental changes. Plants, animals, humans, and microorganisms are all negatively affected by …
Published in International Journal of Green Chemistry · Vol. 8, Issue 1, 2022 · pp. 41–45 Read article
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Electrolytic Degradation of Uric Acid Using Nickel Electrodes in an Unpartitioned and Partitioned Batch Cell
Abstract: Electrolytic degradation of an aqueous solution of uric acid (UA) was performed in an unpartitioned and partitioned electrolytic tank using nickel electrodes. The concentration of uric acid was measured using a UV–Visible spectrophotometer, and the effect of operating parameters such as voltage, concentration of uric acid and the supporting electrolyte were investigated. It is found that the concentration of uric acid decreases with time in both the unpartitioned and partitioned …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 1, 2016 · pp. 1–10 Read article
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Yamuna River Degradation due to Heavy Metals in Delhi-NCR: A Review
Abstract: Yamuna river, which is a heart river for Delhi-NCR, is the most-polluted river in the country. Highly populated Delhi-NCR pollute the river Yamuna in all aspects weather we talk about domestic or industrial waste; which I turn affect in increasing significance for ecological, evolutionary, and environmental reasons. Mythologically Yamuna River is associated with the Hindus but apart it fulfills the need of people in other way as well. The water …
Published in International Journal of Water Resources Engineering · Vol. 2, Issue 2, 2016 · pp. 19–23 Read article