Relevant bibliographies by topics / Temkin isotherm

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Temkin isotherm'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Temkin isotherm"

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El-Aswad, Ahmed F., Mohamed R. Fouad, Mohamed E. I. Badawy, and Maher I. Aly. "Modeling study of adsorption isotherms of chlorantraniliprole and dinotefuran on soil." Current Chemistry Letters 13, no. 3 (2024): 503–14. http://dx.doi.org/10.5267/j.ccl.2024.2.008.

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Knowledge of pesticide adsorption characteristics is essential to predict their behavior in soil. The adsorption equilibrium isotherms of two insecticides chlorantraniliprole (CAP) and dinotefuran (DNF) on two common Egyptian soil types, clay loam and sandy loam were studied and modeled. To predict the adsorption isotherms and to determine the adsorption parameters, ten isotherm models: Langmuir (five linear forms), Freundlich, Temkin, Dubinin-Radushkevich, Elovick, Fowler-Guggenheim, Kiselev, Jovanoic, Harkins-Jura, and Halsey were applied on experimental data. The results revealed that the a
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Tewari, Hemlata, and Vivekanand. "Removal of heavy metals from industrial effluent using Pinus roxburghii leaves as biosorbent: equilibrium modelling." Water Science and Technology 67, no. 9 (2013): 1894–900. http://dx.doi.org/10.2166/wst.2013.034.

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In the present study, biosorption capability of pine (Pinus roxburghii) leaves for the removal Cr6+, Cu2+, Fe2+ and Zn2+ ions, present in brass and electroplating industry effluent, were investigated with respect to different adsorbent doses, contact time and pH. Heavy metals concentrations were estimated by atomic absorption spectrophotometry. Initial concentration of Cr6+, Cu2+, Fe2+ and Zn2+ ions in the effluent were found to be 2.741, 4.551, 8.820 and 5.529 mg/L respectively. Biosorption studies revealed that Cr6+, Cu2+, Fe2+ and Zn2+ showed maximum removal of 99.85, 94.54, 97.10 and 89% a
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Owabor, C. N., I. O. Oboh, and F. A. Omiojieahior. "Adsorption Isotherms for Naphthalene on Clay and Silt Soil Fractions: A Comparison of Linear and Nonlinear Methods." Advanced Materials Research 367 (October 2011): 359–64. http://dx.doi.org/10.4028/www.scientific.net/amr.367.359.

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Polycyclic aromatic hydrocarbons occur naturally in petroleum oil and coal and the burning of fuel and the activities of paper mills also release these compounds to the environment. Batch experimental adsorption study for both soil fractions was conducted in a soil slurry system at ambient temperature, using <0.02mm particle sizes. Comparison was made of the linear least-squares method and a trial-and-error nonlinear method of some widely used isotherm models for the adsorption of naphthalene on clay and silt fractions. The experimental results were fitted to the Langmuir, Freundlich, Radke
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Alcides, M. M. Michellod, N. Pila Andrea, I. Profeta Mariela, et al. "Models Sorption of Cyhalofop-Butyl, on Mesopotamic Agricultural Soils." Chemistry Research Journal 5, no. 4 (2020): 54–61. https://doi.org/10.5281/zenodo.12595863.

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<strong>Abstract </strong>The adsorption equilibrium of butyl (2R)-2-[4-(4-cyano-2-fluorophenoxy) phenoxy]propanoate (CB) was studied in rice-growing soil. The equilibrium sorption data were fitted into Langmuir, Temkin and Dubinin&ndash;Radushkevich (DRK) isotherms. Of the four adsorption isotherm, the R<sup>2</sup> value of Dubinin&ndash;Radushkevich isotherm model was the highest. The maximum monolayer coverage (q<sub>m</sub>) from Langmuir isotherm model was determined to be 0.079 mg g<sup>-1</sup>, the separation factor indicating a favorable sorption experiment is 0.38. The heat of sorpt
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Dada, A. O., J. O. Ojediran, and Abiodun Paul Olalekan. "Sorption of Pb2+ from Aqueous Solution unto Modified Rice Husk: Isotherms Studies." Advances in Physical Chemistry 2013 (March 18, 2013): 1–6. http://dx.doi.org/10.1155/2013/842425.

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Investigation of the sorption potential of rice husk, an agricultural waste, as an adsorbent was carried out. The rice husk was modified with orthophosphoric acid and was used for adsorption of lead (II) ions (Pb2+) from aqueous solution. Physicochemical properties of the modified rice husk were determined. Equilibrium sorption data were confirmed with Langmuir, Freundlich and Temkin adsorption isotherms. On the basis of adsorption isotherm graphs, R2 values were determined to be 0.995, 0.916, and 0.797 for Langmuir, Temkin, and Freundlich isotherms, respectively, indicating that the data fitt
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Salahudeen, N., and A. Alhassan. "Adsorption of Crystal Violet on Rice Husk Activated Carbon." Journal of Engineering Sciences 9, no. 1 (2022): F11—F15. http://dx.doi.org/10.21272/jes.2022.9(1).f2.

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The need to develop effective technology for the treatment of liquid effluent of dye-intensive industries such as textile, rubber, paint, and printing is synonymous with the need to save the life-threatening risks posed by these carcinogenic and mutagenic pollutants on human and aquatic lives. Isotherms of adsorption of crystal violet (CV) on activated carbon (AC) synthesized from rice husk are presented herewith to elucidate the mechanism of the adsorption process of crystal violet dye contaminated water on rice husk activated carbon. AC was synthesized from rice husk via a phosphoric acid ac
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Javed, Ifrah, Muhammad Asif Hanif, Umer Rashid, Farwa Nadeem, Fahad A. Alharthi, and Elham Ahmed Kazerooni. "Enhancing Functionalities in Nanocomposites for Effective Dye Removal from Wastewater: Isothermal, Kinetic and Thermodynamic Aspects." Water 14, no. 17 (2022): 2600. http://dx.doi.org/10.3390/w14172600.

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The adsorption process combined with electrocoagulation is a highly effective technique for dye removal. Calcinized and non-calcinized composites based on bentonite and sodium zeolite were prepared for adsorptive removal of Foron EBL blue, Terasil brown 2RFL, Torque blue PG, and Orange P3R dyes. Factors affecting the adsorption process, such as contact time, initial dye concentration, and temperature, were also explored in this study. Equilibrium data of natural clay composites was explained by Freundlich, Langmuir, Dubinin Radushkevich isotherm, Harkin Jura, and Temkin isothermal models. Hark
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Shojaat, Rahim, Afzal Karimi, Naghi Saadatjoo, and Soheil Aber. "Dye removal from artificial wastewater using heterogeneous bio-fenton system." Chemical Industry and Chemical Engineering Quarterly 23, no. 4 (2017): 447–56. http://dx.doi.org/10.2298/ciceq160621058s.

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In the present study, GOx/MnFe2O4/calcium alginate nano-composite was prepared by the trapping enzyme/nanoparticles in calcium alginate. The prepared absorbent was applied for decolorization of artificial dye wastewater of acid red 14 (AR14) by heterogeneous bio-Fenton system. Kinetic and isotherm studies were carried out. The decolorization of acid red 14 followed the Michaelis- Menten, pseudo-first order and pseudo-second order kinetic models. Good correlation coefficients were obtained by fitting the experimental data to Michaelis- Menten and pseudo-second order kinetic models. The adsorpti
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Agarwal, Ajay K., Mahendra S. Kadu, Chandrashekhar P. Pandhurnekar, and Ishwardas L. Muthreja. "Equilibrium isotherm studies for the sorption of Nickel ions onto coal fly ash." Environment Conservation Journal 15, no. 1&2 (2014): 153–59. http://dx.doi.org/10.36953/ecj.2014.151220.

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The objective of the present study was to study equilibrium isotherm for the sorption of Nickel ions onto coal fly ash. In this study, BET adsorption isotherm was found to be best fitted among Langmuir, Freundlich, BET, Temkin and Harkins Jura adsorption isotherms using lest square fit method. The best fit adsorption isotherm is assessed by the linear coefficient of determination (R2) and non-linear Chi-square test. The theoretical value of qe calculated from the best fit linear equation of each adsorption isotherm and the experimental values of qe (0.08) are plotted against Ce, to compare the
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Rashi, Gupta, and Rawal Nekram. "Removal of chromium(VI) in wastewater by adsorption on iron oxide nanoparticles." Journal of Indian Chemical Society Vol. 95, Mar 2018 (2018): 243–46. https://doi.org/10.5281/zenodo.5641981.

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Civil Engineering Department, Motilal Nehru National Institute of Technology, Allahabad-211 004, Uttar Pradesh, India <em>E</em>-<em>mail</em> : rashigpt97@gmail.com, nek_friend@rediffmail.com <em>Manuscript received 15 November 2017, revised 26 February 2018, accepted 07 March 2018</em> The nanoparticles are used in various applications because of their narrow size distribution, huge surface area, better compatibility and great adsorption efficiency to various heavy metal ions. In this paper, iron oxide nanoparticles were prepared from low-grade iron ore by coating with ferric chloride. This
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Dissertations / Theses on the topic "Temkin isotherm"

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Rosa, Carlos Eduardo de Sousa. "Estudo da aplicação de diversos modelos e metodologias na análise de adsorção em fase líquida." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/10819.

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Este trabalho contempla a utilização dos modelos de Langmuir, Freundlich, Sips, Redlich- Petersen, Toth, Dubinin–Radushkevich e Tempkin para análise de isotérmicas de adsorção de compostos fenólicos, amitriptilina e fluoxetina em carvões ativados e negros de fumo em fase líquida, obtidas pelo Grupo de Investigação de Química de Superfícies e Materiais da Universidade de Évora. Foi utilizado o ajuste não linear aos dados experimentais usando o software Solver do MS Excel. Para a avaliação da aplicabilidade dos modelos foram usadas as funções de erro, coeficiente de determinação, soma dos erros
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Book chapters on the topic "Temkin isotherm"

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Babu, N. Chitti, Lagudu Preethi, Kolluru Manaswini, and Y. Bhavani. "STUDIES ON GREEN SYNTHESIS OF SILVER NANOPARTICLES FOR THE REMOVAL OF BRILLIANT GREEN DYE FROM AQUEOUS SOLUTION." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 16. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bjcs16p3ch4.

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In order to remove Brilliant Green dye from an aqueous solution, the current study seeks to use an experimental evaluation of the biosorptive ability of synthetic nanoparticles with Tecomastans leaf extract. The XRD, FTIR, SEM, and FESEM analyses were used to describe the produced nanoparticles. The effects of agitation time, pH, BG dye concentration, biosorbent dosage, and temperature on BG dye removal were investigated in batch runs. The Response Surface Methodology (RSM) results are compared with the optimal settings that were empirically discovered. The experimental data is consistent with
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Belekar, R. M., and S. J. Dhoble. "The Fluoride Adsorption Isothermal Studies of Activated Alumina Modified with Different Materials: A Critical Review." In Water Pollution Sources and Purification: Challenges and Scope. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815050684122010005.

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: Fluoride in drinking water has become a global problem that has a profound effect on teeth and bones, fostering various health problems. Adsorption is a potential defluoridation technique because of flexibility, cost-effectiveness, environmental friendliness, simplicity in design, relative ease of operation, and capability of producing high water quality. Although activated alumina is an appropriate adsorbent, it has a narrow favorable pH range, a tendency to form toxic aluminum fluoride complexes, and the problem of aluminum metal leaching. This article critically reviews the applicability
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Madkour, Loutfy H., Savaş Kaya, Ime Bassey Obot, and Lei Guo. "Hydantoins-Based Corrosion Inhibitors for Mild Steel in Acidic and Alkaline Solutions." In Advances in Chemical and Materials Engineering. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-6341-6.ch011.

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Hydantoins substituents have been studied as corrosion inhibitors for mild steel in HNO3 and NaOH media. The studies involve chemical and electrochemical methods. Weight loss, thermometric and Potentiodynamic polarization (PDP) have been applied. The experimental measurements have been confirmed by quantum chemical calculations and Monte Carlo simulation (MCS). Potentiodynamic polarization studies reveal that the hydantoin derivatives act as mixed type inhibitor. The adsorption obeyed the Temkin adsorption isotherm model. Electronic parameters relevant to their inhibition activity such as EHOM
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Lakhane, Madhuri, and Megha Mahabole. "Biocompatible Composites and Applications." In Bio-Inspired Nanotechnology. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080179123010004.

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In this chapter, the low-cost, biodegradable absorbents are developed for wastewater treatment. At first, the modification of the procured nano ZSM-5 is executed by means of dealumination and ion exchange process to have de-laminated (D-ZSM-5), Cu-ZSM-5 and Fe-ZSM-5. Furthermore, cellulose nanofibrils (CNFs) are mixed with modified zeolites with varying concentrations (20 and 80 wt%) used for the fabrication of innovative composite films ((D-ZSM-5, Cu-ZSM-5 and Fe-ZSM-5). FTIR, XRD, BETCO2, TGA, and SEM type of characterization techniques are used for the analysis of composites. The prepared c
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Upadhyay, Virendra, Rajat Sengar, and Sudhir Kumar Verma. "Assessment of C.I. ACID RED 2 Adsorption From Aqueous Solution by Modified, Activated, and Raw Water Hyacinth as a Low-Cost Green Adsorbent." In Advances in Chemical and Materials Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-5320-2.ch008.

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The kinetic and isotherms of the adsorption of the C. I. Acid Red 2 onto raw, activated, and modified water hyacinth were studied. Modern techniques used to classify the new agricultural-based biosorbents are FTIR, SEM, TGA, DSC, and XRD. Raw water hyacinth (RWH), activated water hyacinth (AWH), and modified water hyacinth (MWH) were used as green biosorbents in this study. On the decolorization of dye (C. I. Acid Red 2), the consequences of operating parameters such as contact time, the quantity of adsorbent dosage (0.1 to 0.6 g), initial dye concentration, temperature, and pH (2 to 10) have
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Ravi, Monisha, Sanmugapriya Ravi, and Arockia Selvi J. "COMPREHENSIVE VIEW OF ISOLATION/ DETECTION OF PHYTOCHEMICALS FROM PLANT EXTRACT: ECO-FRIENDLY CORROSION INHIBITOR IN VARIOUS CORROSIVE MEDIA." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 11. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becs11p2ch8.

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Plants are a source of chemicals that are now being explored in diverse applications in metal deterioration prevention in most systems as a possible substitute for harmful synthetic inhibitors. Over the previous few decades, natural extracts have been used to prevent metals from corroding. The plant extracts give corrosion inhibition efficiencies above 60%. Complex phytochemicals with electron-rich sites in plant extracts interact aggressively with the metallic surface. Numerous multiple bonds and polar functional groups are typically conjugated with these phytochemicals. The presence of π ele
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Conference papers on the topic "Temkin isotherm"

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Hassani, Sh, K. P. Roberts, S. A. Shirazi, E. F. Rybicki, J. R. Shadley, and C. Joia. "Characterization and Prediction of Chemical Inhibition Performance for Erosion-Corrosion Conditions in Sweet Oil and Gas Production." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01122.

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Abstract Erosion-corrosion deterioration of carbon steel in CO2-saturated systems with sand is a problem in the oil and gas industry because the combined effects of erosion and corrosion can reduce the protection provided by iron-carbonate scale formation and/or inhibitors. The result can be pitting and severe erosion-corrosion. The effects of sand erosion on inhibitor performance have been examined in a flow loop using an impinging jet test cell and different techniques such as long-term Weight Loss (WL), Linear Polarization Resistance (LPR), Potentiodynamic Polarization (PDYN), 3D profilomet
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Jauhari, Smita, Kinnari Parekh, and R. V. Upadhyay. "Corrosion Inhibition of Mild Steel in Acidic Media Using a Nanomagnetic Fluid as a Novel Corrosion Inhibitor." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11381.

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Abstract Nanomagnetic fluid, a novel material comprising of ferromagnetic nanoparticles, has been evaluated as a corrosion inhibitor. Corrosion behavior of carbon steel in 0.1M HNO3 has been studied as a function of various concentrations of aqueous nanomagnetic fluid. The novel nanomagnetic fluid has been specially synthesized to achieve the stability in acidic media when it is mixed with HNO3 This nanomagnetic fluid has been evaluated by gravimetric and polarization measurement techniques. It was observed that the inhibition efficiency increases with the increase in the nanomagnetic fluid co
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Aljeaban, Norah, Nurudeen A. Odewunmi, Bader Alharbi, Mohammad A. Jafar Mazumde, Salem Balharth, and Shaikh A. Ali. "Investigation of Electrochemical Corrosion Inhibition of N, N′-(1, 4-Phenylenebis(methyl)) Bis(N,N-Dimethylalkan-1-Aminium) Chloride on API 5L X60 Steel in Acidic Media." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14723.

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Abstract The application of corrosion inhibitors (CI) to producing oil and gas field systems is one of the most common practices of corrosion control. Acid stimulation fluids such as hydrochloric acid (HCl) and organic acids has high calcite and dolomite dissolving power; however, pumping HCl downhole during acid stimulation process particularly at elevated temperatures can cause severe corrosion. Therefore, the addition of corrosion inhibitors is indispensable to protect the metal from corrosion. More inhibitors that are efficacious are still needed to provide better protection against the co
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Cheng, Y. F., J. L. Luo, and M. Wilmott. "Some Fundamental Aspects of the Electrochemical Noise Generated During Pitting of a 516-70 Carbon Steel." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98389.

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Abstract The potential and current noise during pitting of A516-70 carbon steel in chloride-containing solutions were monitored. Statistical analyses were performed in an attempt to achieve some fundamental understanding of the corrosion processes for this system. It was concluded that the Temkin isotherm could be used to explain the competitive adsorption of Cl- and HCO3- on the electrode surface. The initiation of pitting was characterized by typical potential and current transients: quick drop of potential and rise of current followed by their slow recoveries. Electrode capacitance played a
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Durnie, W. H., and M. A. Gough. "Characterization, Isolation and Performance Characteristics of Imidazolines. Part II. Development of Structure - Activity Relationships." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03336.

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Abstract Imidazolines have been used in the area of corrosion inhibition since at least the mid 1940’s when it was shown that long chain organic compounds with polar functional groups had corrosion inhibition properties when applied to oil-field environments. Part I. of this paper reported the synthesis, separation/isolation and performance characteristics of various imidazoline species synthesised from oleic acid (OA) and diethylenetriamine (DETA). These techniques have been employed in order to yield relatively ‘pure’ imidazolines for more detailed study. This paper presents the preliminary
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Ormellese, M., E. A. Pérez, G. Raffaini, F. Ganazzoli, and L. Lazzari. "Inhibition Mechanism in Concrete by Organic Substances: an Experimental and Theoretical Study." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09221.

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Abstract Corrosion inhibitors are one of the preventative techniques used to prevent chloride-induced corrosion in reinforced concrete structures. Several commercial inhibitors are available on the market, but their efficiency as well as their inhibitive mechanism are not well understood. In this paper the inhibiting behaviour of five organic substances in delaying chloride-induced corrosion was evaluated in alkaline solution using electrochemical impedance spectroscopy and potentiodynamic tests. The studied substances were sodium tartrate, sodium benzoate, sodium glutamate, dimethylethanolami
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Leelavathi, S., and R. Rajalakshmi. "Mundulea Sericea Leaves as a Corrosion Inhibitor for Mild Steel in Acidic Solution." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02187.

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Abstract The inhibition effect of Mundulea sericea leaf extract (MSLE) on the corrosion of mild steel in 1.0 M HCl and 0.5 M H2SO4 solution was investigated for the first time by mass loss, linear polarization resistance (LPR), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) methods. These studies were carried out at different concentrations, temperatures and durations. The results show that Mundulea sericea is a very potent inhibitor, and is more efficient in 1.0 M HCl than 0.5 M H2SO4. The adsorption of Mundulea sericea on mil
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Tasić, Tamara, Vedran Milanković, Vladan Anićijević, Igor Pašti, and Tamara Lazarević-Pašti. "Adsorbing danger: Carbon material combatting organophosphate." In 11th International Scientific Conference on Defensive Technologies - OTEX 2024. Military Technical Institute, Belgrade, 2024. http://dx.doi.org/10.5937/oteh24089t.

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Organophosphates are a class of compounds known for their use as chemical warfare agents. These agents have been utilized in military contexts due to their ability to act as nerve agents, disrupting the nervous system's function. However, beyond their military application, organophosphates pose significant risks to human health and the environment. Exposure to these compounds can lead to severe neurological effects and even death in high concentrations. Moreover, organophosphates can persist in the environment, contaminating soil, water, and air, posing long-term risks to ecosystems and public
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Enascuta, Cristina-Emanuela, Elena-Emilia Oprescu, Catalina Calin, Gabriel Vasilievici, and Cristina Popa. "ADSORPTION OF NITRATE ON MAGNETIC MICROALGAL BIOCHAR." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/6.1/s25.07.

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The presence of nitrate concentration in drinking water can cause high toxicity to the human body, being considered among the most important pollutant in the environment. Among the many methods available such as biological treatment, electrodialysis, reverse osmosis, adsorption, ion exchange, adsorption is the most used technique due to its low cost and simplistic design. Therefore, the aim of this paper was to study the retention of nitrate anion from high concentration aqueous solutions on a novel magnetic adsorbent obtained by pyrolysis of de-oiled microalgal biomass. The prepared adsorbent
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Al Ghazawi, Ziad Deeb, and Esra�a Omar Al Diabat. "SALINITY REMOVAL OF RECLAIMED WASTEWATER USING NATURAL AND MODIFIED ZEOLITE AND NANO ZEOLITE PARTICLES." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/1.1/s02.018.

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Wastewater treatment and desalination are considered important solutions to meet the water scarcity in Jordan. The irrigation with reclaimed wastewater, that usually has elevated salinity levels, may adversely change soil structure, stability, and hydraulic properties. Water traditional desalination techniques require huge energy and capital investments. Zeolites in normal and nano scales enhance the desalination process performance and reduce its economic and energy requirements. In this study, batch experiments were conducted to investigate the salinity removal of reclaimed wastewater by usi
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Reports on the topic "Temkin isotherm"

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Gu, Tianbao, Samuel Simon Araya, and Vincenzo Liso. CFD Modeling of NH3 Synthesis on Ru-Based Catalyst for Hydrogen Storage and Transport. Aalborg University, 2024. https://doi.org/10.54337/aau772652211.

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Hydrogen is often considered as a promising alternative to fossil fuels, however its low boiling point and diffusivity cause a huge challenge for storage and transport. Therefore an alternative fuel like ammonia, containing 17 wt.% hydrogen with a higher boiling point, seems a very promising solution for hydrogen storage and transport. In this paper, ammonia synthesis via the most widely used Haber-Bosch process has been investigated. A computational fluid dynamics (CFD) model is developed for a lab-scale reactor, incorporating the modified Temkin kinetic model describing the complex catalytic
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