Search
84 articles for “order of kinetics”
-
Mixed Order Kinetics Model in Thermoluminescence Obtained with Hyperbolic Heating
Abstract: AbstractMixed Order kinetics model (MOKM) is used to analyze Thermoluminescence (TL) peaks. Dependence of the symmetry factor of TL peaks on MO parameter α=
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 28–32 Read article
-
Determination of the Activation Energy of a TL Peak Without Prior Knowledge of Order of Kinetics
Abstract: In the present study, we extend the peak shape method of Chen for fractional intensities x =2 3 and 4 5.The novelity of the method is that it does not require the prior knowledge of order of kinetics which does not admit a straight forward evaluation. The present method has been successfully applied to computer generated TL peaks resulting from kinetic order model (KOM). The validity of the present sets …
Published in Research & Reviews : Journal of Physics · Vol. 12, Issue 1, 2023 · pp. 14–21 Read article
-
The Impact of Bacteria and Biostimulants on Crude Oil Breakdown in Loamy Soil
Abstract: This study investigates the influence of bacteria and biostimulants—specifically Bryophyllum pinnatum leaves soaked in both water and ethanol—on the degradation of crude oil in loamy soil. A laboratory-scale bioremediation setup was employed using a batch reactor model and first-order degradation kinetics to assess total petroleum hydrocarbon (TPH) breakdown under controlled conditions. Various analytical tools and procedures, including gas chromatography (Agilent 6890) and microbial media such as nutrient agar and mineral …
Published in International Journal of Pollution: Prevention & Control · Vol. 3, Issue 2, 2025 · pp. 15–22 Read article
-
Effective Removal of Widely Applicable Pesticides Using Iron Pillared Clay (Fe/Bt): Adsorption Behaviour and Kinetics
Abstract: The vast application of pesticides for agricultural purpose to enhance adequate plant growth is quite alarming, with its negative environmental influence increasing every day. The current study investigates the potential of iron pillared bentonite (Fe/Bt) for effective removal of three different widely applicable pesticides (Glyphosate, Bentazon and Diazinon) in aqueous solution. This adsorbent has been characterized ab initio by FT-IR spectroscopy. Adsorption parameters such as contact time, initial pesticide concentration …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 1, 2023 · pp. 10–20 Read article
-
Organophilicization of Bentonite by HDTMA+ and TMPA+ Cations for Sorption of 2,4-Dichlorophenol (2,4-DCP) in Aqueous Solution
Abstract: Bentonite (Bt) was converted to organoclays by intercalation of cationic surfactants into its interlayer space. Two types of organoclays were synthesized from HDTMA and TMPA at 100% CEC, and the adsorbents were characterized by FTIR, XRD and SEM. The adsorption capacities of Bt and the organoclays for the removal of 2,4-dichlorophrnol (2,4-DCP) from aqueous solutions were tested under different conditions. Two adsorption isotherm models (Langmuir and Freundlich isotherms) were used …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 3, 2020 · pp. 22–32 Read article
-
Adsorption of Congo Red Dye by Using Poly(2-Chloroaniline-co-2-Methoxyaniline)
Abstract: ABSTRACTThe removal of this dye from the industry waste water is environmentally significant. In the present work the adsorbent, poly(2-chloroaniline-co-2-methoxyaniline) was employed to remove congo red dye from water. Batch experiments were conducted to study the effects of parameters such as concentration, contact time, amount of the adsorbent dose and pH. The result showed that the dye was removed when pH = 7.5-8 and contact time is 60 minutes and …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 3, 2019 · pp. 9–18 Read article
-
On an alternative concept of the symmetry factor based on skewness of a TL peak
Abstract: Symmetry factor is very crucial in the analysis of Thermoluminescence (TL) peaks. Knowledge of symmetry factor is required for the evalution of trapping parameters of a TL peak. The usual symmetry is denoted by shape factor of the peak. In the present paper an alternative concept of symmetry factor of the TL peak based on its skewness is developed. The present findings are applied both to computer generated and experimental …
Published in Research & Reviews : Journal of Physics · Vol. 10, Issue 2, 2021 · pp. 16–22 Read article
-
Effect of Starch CMC Blend on the Drug Release from the Tablet
Abstract: Starch is frequently used as a binder and disintegrate for immediate release tablet formulation and is also used to prepare sustained release formulations. Starches from various sources show different functional characteristics; while combining with other excipients. When starch blend from various sources is used in the combination with carboxy methyl cellulose (CMC), it shows different release properties. The aim of the present work is to investigate the influence of starch-CMC …
Published in Trends in Drug Delivery · Vol. 5, Issue 1, 2018 · pp. 10–16 Read article
-
Evaluation on Bioremediation Kinetics of Petroleum- Contaminated Soils Using Plant-Based Amendments
Abstract: The effectiveness of bioremediation processes is strongly influenced by environmental conditions, reactor design parameters, microbial characteristics, and pollutant properties. This study investigates the combined effects of environmental-related factors, reactor design considerations, organism- related characteristics, and pollutant properties on the degradation of total petroleum hydrocarbons (TPH) in swampy and clay soils amended. Laboratory-scale remediation experiments were conducted over an 84-day period using amendment dosages ranging from 20 to 100 g. The …
Published in Emerging Trends in Chemical Engineering · Vol. 13, Issue 1, 2026 · pp. 24–30 Read article
-
Removal of Lead and Zinc from Industrial Waste water by Amla leaves Nano-bioadsorbent
Abstract: In the present research work, amla leaves (Phyllanthusemblica) were used for preparing nanobioadsorbent to remove heavy metals viz. Lead (Pb) and Zinc (Zn) present in wastewater. The major advantage of using amla leaves as bioadsorbent is its easy availability, abundance, low cost, biodegradable and eco-friendly nature. Prepared bioadsorbent was characterized by infrared spectroscopy (IR), SEM and BET techniques. Variation in the experimental conditions such as pH, adsorbent dosage, stirring speed …
Published in Journal of Water Pollution & Purification Research · Vol. 9, Issue 1, 2022 · pp. 6–15 Read article
-
Investigation on the Treatment of Different Soil Types using Elephant Grass and Moringa Seed Shell
Abstract: The research on the effect of locally sourced raw materials effectiveness to enhance remediation of crude oil polluted soil environment using moringa seed shell in powdered form, yeast and NPK in swampy and clay Soil (moringa oleifera) and elephant grass in powdered form, yeast and NPK in swampy soil (pennisetum purpureum) was studied. Experimental investigation was conducted to determine the performance of both locally sourced raw materials for crude oil …
Published in Journal of Catalyst & Catalysis · Vol. 9, Issue 3, 2022 · pp. 35–43 Read article
-
Comparison of Different Models forthe Remediation of Crude Oil Contaminated Clay and Swampy Soil Environment
Abstract: This research was carried out to compare different mathematical models for the determination of best practice or method for remediation of crude oil contaminated clay and swampy soil environment. The results obtained were utilized to calculate the highest specific rates, the disassociation constant, and the kinetic values in terms of first- and second-order kinetics. The use of the Lineweaver Buck plot was taken into consideration for the different reactors, and …
Published in International Journal of Pollution: Prevention & Control · Vol. 1, Issue 1, 2023 · pp. 1–8 Read article
-
Design and Evaluation Cefaclor Microspheres for Bioavailability Enhancement
Abstract: This study attempted to formulate microspheres for oral administration of Cefaclor by using different polymers like Hydroxypropyl methylcellulose (HPMC) K4M, (HPMC) K15M and Ethylcellulose (EC) which increases the gastric residence time and thereby the bioavailability. Solvent evaporation method was found to be the best due to its ease of fabrication without compromising the activity of the drug. Cefaclor is a second-generation cephalosporin antibiotic used to treat certain ear, lung, skin, …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 6, Issue 3, 2019 · pp. 39–48 Read article
-
Calcareous Soil as a Promising Adsorbent to Remove Fluoride from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Study
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 In this work, the feasibility of employing calcareous soil to remove fluoride ions from its aqueous solutions was investigated under batch mode. The influence of solution pH, sorbent dose, initial fluoride concentration, contact time, stirring rate and temperature on the removal process were investigated. The equilibrium adsorption data were analyzed using Langmuir, Freundlich and Temkin isotherm models. The kinetics of fluoride …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 3, 2012 · pp. 1–21 Read article
-
Modelling and Evaluation of Kinetics of Methane Chlorination using Matlab Techniques
Abstract: The chlorination of methane follows series-consecutive reaction mechanism to yield the chloromethanes products. The equation of reaction comprised of four consecutive step chemical reaction equations. The kinetics model for chlorination of methane into monochloromethane, dichloromethane, trichloromethane and tetrachloromethane was developed from the chemical reaction equations. In the elementary rate equation, the concentration of chlorine was assumed to be in excess, reducing the model to first order kinetics. The developed model …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 2, 2020 · pp. 31–36 Read article
-
AI-Assisted Kinetic Modeling of PLA Hydrolysis Under Subcritical Water Conditions for Sustainable Polymer Recycling
Abstract: The accumulation of poly (lactic acid) (PLA) in terrestrial and marine ecosystems has intensified the demand for closed-loop, green recycling technologies. Subcritical water (SCW) hydrolysis offers a promising, catalyst-free pathway for the rapid depolymerization of PLA into its constituent monomer, lactic acid. However, the complex, highly non-linear kinetics governing macro-molecular degradation under variable hydrothermal conditions limit real-time process optimization and industrial scalability. This study develops a novel artificial intelligence (AI)-assisted …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 2, 2026 · pp. 65–74 Read article
-
Evaluation of Lemon Grass (Cymbopogon Citratus) Performance for Petroleum Hydrocarbon Degradation in Soil Environment
Abstract: The evaluation of lemon grass (cymbopogon citratus) performance for petroleum hydrocarbon degradation in soil environment was monitored with respect to contact time or period of exposure. Models were developed in this research to demonstrate the potential of the first-order kinetic, Michaelis Menten and the LineWeaver Burk Plot, and the evaluation of the effect of the biostimulant dosage was monitored in accordance the total petroleum hydrocarbon degradation. The performance of lemon …
Published in Journal of Catalyst & Catalysis · Vol. 11, Issue 1, 2024 · pp. 33–49 Read article
-
Improved Photocatalytic Activity for Removal of Methylene Blue Dye from Aqueous Solutions with La2O3-Modified Ceria Heterostructured Binary Oxide Nanocomposite Particles
Abstract: The current study aimed to examine the photocatalytic efficacy of a bimetallic CeO2-La2O3 hetero-NC in comparison to monometallic CeO2 and La2O3 nanoparticles (NPs), utilizing Methylene Blue (MB)as pollutant sample under natural solar and UV irradiation. The coprecipitation method was utilized to produce a bimetallic CeO2-La2O3 hetero-NC. Following this, the nanostructures underwent characterization through various techniques including FT-IR, FE-SEM, XRD, UV Vis- DRS, Raman, and Photoluminescence spectroscopy. The catalytic activity of …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 514–532 Read article
-
Hexavalent Chromium Resistance Test of Saccharomyces Cerevisiae and Modeling of its Bioaccumulation Process
Abstract: Now a day, the release of high chromium containing tannery waste water from tanning industries to the environment is the life threatening action of human activities and bioaccumulation becomes a better alternative in treating heavy metals(such as Cr(VI) )due to its cost effective, relatively high heavy metal removal capacity and recovery property. Cell suspensions of S.cerevisiae at its exponential growth phase were added to 250 ml plastic flasks of containing …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 1, 2021 · pp. 36–44 Read article
-
Facile Fabrication and Characterization of Novel Sterculia Gum–graft-poly(n-isopropylacrylamide-co-acrylamide) Hydrogel for Efficient Removal of Cationic Dyes from Aqueous Solution
Abstract: Water is indispensable component of life. Contamination of water is a severe problem that affects human health, aquatic vegetation, and fauna. Aside from various effluents, a variety of cationic dyes generated by industrial effluents contributes significantly to water contamination. In this study, a sterculia gum graft-poly(n-isopropylacrylamide-co-acrylamide) hydrogel was made using a graft copolymerization technique with N,N′-methylene-bis-acrylamide as a crosslinker, ammonium persulphate as an initiator, and tetramethylethylenediamine as an accelerator to …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 29–59 Read article