Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)

Background: In wastewater treatment, removal of phosphate and ammonia is of great importance. Chitosan is a copolymer, which can be applied in low-cost adsorption. Thus, in this study, chitosan and activated carbon nanocomposite adsorbents were prepared to remove organic pollutants from the fish far...

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Main Authors: Hassan Rezaei, Saeedeh Rastegar, Seyyed Aliakbar Hedayati, Yousef Dadban Shahamat, Omid Sedaghat
Format: Article
Language:English
Published: Kurdistan University of Medical Sciences 2021-04-01
Series:Journal of Advances in Environmental Health Research
Subjects:
Online Access:http://jaehr.muk.ac.ir/article_131332_da558d02e0d689514bc5e9c6d6ad96c8.pdf
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author Hassan Rezaei
Saeedeh Rastegar
Seyyed Aliakbar Hedayati
Yousef Dadban Shahamat
Omid Sedaghat
author_facet Hassan Rezaei
Saeedeh Rastegar
Seyyed Aliakbar Hedayati
Yousef Dadban Shahamat
Omid Sedaghat
author_sort Hassan Rezaei
collection DOAJ
description Background: In wastewater treatment, removal of phosphate and ammonia is of great importance. Chitosan is a copolymer, which can be applied in low-cost adsorption. Thus, in this study, chitosan and activated carbon nanocomposite adsorbents were prepared to remove organic pollutants from the fish farm effluents.Methods: This study was performed at different physicochemical conditions of pH (5-8), effluent dose (25-100 mg/L), and contact time (15-90 min) minutes. Adsorption isotherm studies were analyzed using Freundlich, Langmuir models, and adsorption kinetics studies.Results: The Langmuir and Freundlich isotherms for nitrite (R2=0.9076, R2=0.5911), phosphate (R2=0.9307, R2=0.5755), and ammonia (R2=0.7288 and R2=0.7549) were respectively obtained. According to the results, the data of nitrite and phosphate pollutants were more consistent with the Langmuir model, but the data of ammonia pollutants were more consistent with the Freundlich. The best optimal adsorption occurred at a pH=7. Elevation of the initial concentration of the pollutant led to the depletion of the removal functions. With increasing the contact time, adsorption efficiency increased.Conclusion: Finally, with respect to the obtained elimination percentage (R=99.98%), chitosan and activated carbon nanocomposites have a high ability to remove organic pollutants.
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spelling doaj.art-8f7fa8ed37db4894a08f28bf2d677d8b2022-12-21T23:36:23ZengKurdistan University of Medical SciencesJournal of Advances in Environmental Health Research2345-39902021-04-019212913810.32598/JAEHR.9.2.1196131332Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)Hassan Rezaei0Saeedeh Rastegar1Seyyed Aliakbar Hedayati2Yousef Dadban Shahamat3Omid Sedaghat4Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.Department of Fisheries and Aquatic Ecology, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.Department of Environmental Health Engineering, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran.Department of Environmental Pollution, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran.Background: In wastewater treatment, removal of phosphate and ammonia is of great importance. Chitosan is a copolymer, which can be applied in low-cost adsorption. Thus, in this study, chitosan and activated carbon nanocomposite adsorbents were prepared to remove organic pollutants from the fish farm effluents.Methods: This study was performed at different physicochemical conditions of pH (5-8), effluent dose (25-100 mg/L), and contact time (15-90 min) minutes. Adsorption isotherm studies were analyzed using Freundlich, Langmuir models, and adsorption kinetics studies.Results: The Langmuir and Freundlich isotherms for nitrite (R2=0.9076, R2=0.5911), phosphate (R2=0.9307, R2=0.5755), and ammonia (R2=0.7288 and R2=0.7549) were respectively obtained. According to the results, the data of nitrite and phosphate pollutants were more consistent with the Langmuir model, but the data of ammonia pollutants were more consistent with the Freundlich. The best optimal adsorption occurred at a pH=7. Elevation of the initial concentration of the pollutant led to the depletion of the removal functions. With increasing the contact time, adsorption efficiency increased.Conclusion: Finally, with respect to the obtained elimination percentage (R=99.98%), chitosan and activated carbon nanocomposites have a high ability to remove organic pollutants.http://jaehr.muk.ac.ir/article_131332_da558d02e0d689514bc5e9c6d6ad96c8.pdfnano-compositewastewaterchitosanisothermkinetic
spellingShingle Hassan Rezaei
Saeedeh Rastegar
Seyyed Aliakbar Hedayati
Yousef Dadban Shahamat
Omid Sedaghat
Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
Journal of Advances in Environmental Health Research
nano-composite
wastewater
chitosan
isotherm
kinetic
title Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
title_full Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
title_fullStr Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
title_full_unstemmed Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
title_short Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)
title_sort isothermal and kinetic evaluation of adsorption fish farm effluents by nanocomposites chitosan and activated carbon
topic nano-composite
wastewater
chitosan
isotherm
kinetic
url http://jaehr.muk.ac.ir/article_131332_da558d02e0d689514bc5e9c6d6ad96c8.pdf
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