Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic

Heavy metals are the most dangerous inorganic pollutants Due to their bioaccumulation and their nonbiodegradability, for this, several studies have focused on the recovery of these metals from water using different techniques. In this context, our study consists of evaluating an efficient and eco-fr...

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Autores principales:	Bassam Rajaa, El Alouani Marouane, Jarmouni Nabila, Maissara Jabrane, El Mahi Chbihi Mohammed, Belaaouad Said
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	raw rock characterization heavy metals adsorption desorption kinetic isotherm thermodynamic Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b523489947c24f7a8f6e9b57fbea11cf
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spelling	oai:doaj.org-article:b523489947c24f7a8f6e9b57fbea11cf2021-12-02T17:13:38ZInvestigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic2261-236X10.1051/matecconf/202134801016https://doaj.org/article/b523489947c24f7a8f6e9b57fbea11cf2021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/17/matecconf_inbes2021_01016.pdfhttps://doaj.org/toc/2261-236XHeavy metals are the most dangerous inorganic pollutants Due to their bioaccumulation and their nonbiodegradability, for this, several studies have focused on the recovery of these metals from water using different techniques. In this context, our study consists of evaluating an efficient and eco-friendly pathway of competitive recovery of heavy metals (Cd, Cr and As) from aqueous solutions by adsorption using raw rock. This adsorbent was characterized before and after the adsorption process by several techniques. The multi-metals adsorption process in the batch mode was undertaken to evaluate the effect of adsorbent mass, contact time, pH, Temperature, and initial heavy metals concentration. The kinetic data were analyzed using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetic models. According to the modeling of the experimental results, the adsorption kinetics of heavy metals were adapted to the pseudo-second-order model. The adsorption isotherms were evaluated by the Langmuir and Freundlich isotherm models. The experimental isotherm data of heavy metals were better fitted with the Langmuir model rather than Freundlich isotherm models. The maximum experimental adsorption capacities (Qmax) predicted by the Langmuir model are 15.23 mg/g for Cd (II), 17.54 mg/g for Cr (VI) and 16.36 mg/g for As (III). The values of thermodynamic parameters revealed that the heavy metals adsorption was exothermic, favorable, and spontaneous in nature. The desorption process of heavy metals showed that this raw rock had excellent recycling capacity. Based on the results, these untreated clays can be used as inexpensive and environmentally friendly adsorbents to treat water contaminated by heavy metals.Bassam RajaaEl Alouani MarouaneJarmouni NabilaMaissara JabraneEl Mahi Chbihi MohammedBelaaouad SaidEDP Sciencesarticleraw rockcharacterizationheavy metalsadsorptiondesorptionkineticisothermthermodynamicEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 348, p 01016 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	raw rock characterization heavy metals adsorption desorption kinetic isotherm thermodynamic Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	raw rock characterization heavy metals adsorption desorption kinetic isotherm thermodynamic Engineering (General). Civil engineering (General) TA1-2040 Bassam Rajaa El Alouani Marouane Jarmouni Nabila Maissara Jabrane El Mahi Chbihi Mohammed Belaaouad Said Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
description	Heavy metals are the most dangerous inorganic pollutants Due to their bioaccumulation and their nonbiodegradability, for this, several studies have focused on the recovery of these metals from water using different techniques. In this context, our study consists of evaluating an efficient and eco-friendly pathway of competitive recovery of heavy metals (Cd, Cr and As) from aqueous solutions by adsorption using raw rock. This adsorbent was characterized before and after the adsorption process by several techniques. The multi-metals adsorption process in the batch mode was undertaken to evaluate the effect of adsorbent mass, contact time, pH, Temperature, and initial heavy metals concentration. The kinetic data were analyzed using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetic models. According to the modeling of the experimental results, the adsorption kinetics of heavy metals were adapted to the pseudo-second-order model. The adsorption isotherms were evaluated by the Langmuir and Freundlich isotherm models. The experimental isotherm data of heavy metals were better fitted with the Langmuir model rather than Freundlich isotherm models. The maximum experimental adsorption capacities (Qmax) predicted by the Langmuir model are 15.23 mg/g for Cd (II), 17.54 mg/g for Cr (VI) and 16.36 mg/g for As (III). The values of thermodynamic parameters revealed that the heavy metals adsorption was exothermic, favorable, and spontaneous in nature. The desorption process of heavy metals showed that this raw rock had excellent recycling capacity. Based on the results, these untreated clays can be used as inexpensive and environmentally friendly adsorbents to treat water contaminated by heavy metals.
format	article
author	Bassam Rajaa El Alouani Marouane Jarmouni Nabila Maissara Jabrane El Mahi Chbihi Mohammed Belaaouad Said
author_facet	Bassam Rajaa El Alouani Marouane Jarmouni Nabila Maissara Jabrane El Mahi Chbihi Mohammed Belaaouad Said
author_sort	Bassam Rajaa
title	Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
title_short	Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
title_full	Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
title_fullStr	Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
title_full_unstemmed	Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic
title_sort	investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: characterization kinetic, isotherm, and thermodynamic
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/b523489947c24f7a8f6e9b57fbea11cf
work_keys_str_mv	AT bassamrajaa investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic AT elalouanimarouane investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic AT jarmouninabila investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic AT maissarajabrane investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic AT elmahichbihimohammed investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic AT belaaouadsaid investigationofcompetitiveadsorptionanddesorptionofheavymetalsfromaqueoussolutionusingrawrockcharacterizationkineticisothermandthermodynamic
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Investigation of competitive adsorption and desorption of heavy metals from aqueous solution using raw rock: Characterization kinetic, isotherm, and thermodynamic

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