Xylenol orange removal from aqueous solution by natural bauxite (BXT) and BXT-HDTMA: kinetic, thermodynamic and isotherm modeling
Sorption is a key factor in removal of organic and inorganic contaminants from their aqueous solutions. In this study, we investigated the removal of Xylenol Orange tetrasodium salt (XOTS) from its aqueous solution by Bauxite (BXT) and cationic surfactant hexadecyltrimethyl ammonium bromide modified...
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Veröffentlicht in: | Desalination and water treatment 2019-03, Vol.145, p.369-377 |
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creator | Al-Kazragi, Muna A. Al-Heetimi, Dhafir T.A. Al-Khazrajy, Omar S.A. |
description | Sorption is a key factor in removal of organic and inorganic contaminants from their aqueous solutions. In this study, we investigated the removal of Xylenol Orange tetrasodium salt (XOTS) from its aqueous solution by Bauxite (BXT) and cationic surfactant hexadecyltrimethyl ammonium bromide modified Bauxite (BXT-HDTMA) in batch experiments. The BXT and BXT-HDTMA were characterized using FTIR, and SEM techniques. Adsorption studies were performed at various parameters i.e. temperature, contact time, adsorbent weight, and pH. The modified BXT showed better maximum removal efficiency (98.6% at pH = 9.03) compared to natural Bauxite (75% at pH 2.27), suggesting that BXT-HDTMA is an excellent adsorbent for the removal of XOTS from water. The equilibrium data of XOTS adsorption on BXT and BXT-HDTMA surfaces were best fitted with the Freundlich isotherm model. The pseudo-second-order model provided very good fitting for the dye on the two surfaces. The error function, the sum of the absolute errors (SAE), was calculated to identify the best isotherm in this study. The thermodynamic parameters like ΔH°, ΔS° and ΔG° were also calculated. The adsorbent dosage weight and pH were found the most factors influencing the removal process. |
doi_str_mv | 10.5004/dwt.2019.23609 |
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In this study, we investigated the removal of Xylenol Orange tetrasodium salt (XOTS) from its aqueous solution by Bauxite (BXT) and cationic surfactant hexadecyltrimethyl ammonium bromide modified Bauxite (BXT-HDTMA) in batch experiments. The BXT and BXT-HDTMA were characterized using FTIR, and SEM techniques. Adsorption studies were performed at various parameters i.e. temperature, contact time, adsorbent weight, and pH. The modified BXT showed better maximum removal efficiency (98.6% at pH = 9.03) compared to natural Bauxite (75% at pH 2.27), suggesting that BXT-HDTMA is an excellent adsorbent for the removal of XOTS from water. The equilibrium data of XOTS adsorption on BXT and BXT-HDTMA surfaces were best fitted with the Freundlich isotherm model. The pseudo-second-order model provided very good fitting for the dye on the two surfaces. The error function, the sum of the absolute errors (SAE), was calculated to identify the best isotherm in this study. The thermodynamic parameters like ΔH°, ΔS° and ΔG° were also calculated. 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In this study, we investigated the removal of Xylenol Orange tetrasodium salt (XOTS) from its aqueous solution by Bauxite (BXT) and cationic surfactant hexadecyltrimethyl ammonium bromide modified Bauxite (BXT-HDTMA) in batch experiments. The BXT and BXT-HDTMA were characterized using FTIR, and SEM techniques. Adsorption studies were performed at various parameters i.e. temperature, contact time, adsorbent weight, and pH. The modified BXT showed better maximum removal efficiency (98.6% at pH = 9.03) compared to natural Bauxite (75% at pH 2.27), suggesting that BXT-HDTMA is an excellent adsorbent for the removal of XOTS from water. The equilibrium data of XOTS adsorption on BXT and BXT-HDTMA surfaces were best fitted with the Freundlich isotherm model. The pseudo-second-order model provided very good fitting for the dye on the two surfaces. The error function, the sum of the absolute errors (SAE), was calculated to identify the best isotherm in this study. The thermodynamic parameters like ΔH°, ΔS° and ΔG° were also calculated. The adsorbent dosage weight and pH were found the most factors influencing the removal process.</description><subject>Anionic dye</subject><subject>Cationic surfactant</subject><subject>Iraqi Bauxite mineral clay</subject><subject>Thermodynamic parameters</subject><issn>1944-3986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1kL1PwzAQxTOARFW6MnsEiRQnzpfZSvkoUhFLkbpZjn0phsQG2ylk5D_HbVm55U5P753uflF0luBpjnF2Jb_8NMUJnaakwPQoGiU0y2JCq-Ikmjj3hkPlWZln6Sj6WQ8taNMiY7neALLQmS1vUWNNh_hnD6Z3yJm298poVA9Ic9_bYKh5_608oPOb9eoCcS1RGOLF7eppdo3elQavxCXyr2A7IwfNOyX2LuXMXkRBhlbpzWl03PDWweSvj6OX-7vVfBEvnx8e57NlLEha-RhkLYioAWecFoTSpsiLssEJrhoI_1ACsoIUcpnyuipl3VR1KXnKeUaA540k42h62Cuscc5Cwz6s6rgdWILZjhsL3NiOG9tzC4HqEIBw1VaBZU4o0AKksiA8k0b9F_0F1W54tw</recordid><startdate>201903</startdate><enddate>201903</enddate><creator>Al-Kazragi, Muna A.</creator><creator>Al-Heetimi, Dhafir T.A.</creator><creator>Al-Khazrajy, Omar S.A.</creator><general>Elsevier Inc</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201903</creationdate><title>Xylenol orange removal from aqueous solution by natural bauxite (BXT) and BXT-HDTMA: kinetic, thermodynamic and isotherm modeling</title><author>Al-Kazragi, Muna A. ; Al-Heetimi, Dhafir T.A. ; Al-Khazrajy, Omar S.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-edbc3cbe04a96399f6567f0108fe00093ed8e2e5d2ab87dbf8b7da2aa43ea5fd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Anionic dye</topic><topic>Cationic surfactant</topic><topic>Iraqi Bauxite mineral clay</topic><topic>Thermodynamic parameters</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Al-Kazragi, Muna A.</creatorcontrib><creatorcontrib>Al-Heetimi, Dhafir T.A.</creatorcontrib><creatorcontrib>Al-Khazrajy, Omar S.A.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><jtitle>Desalination and water treatment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Al-Kazragi, Muna A.</au><au>Al-Heetimi, Dhafir T.A.</au><au>Al-Khazrajy, Omar S.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Xylenol orange removal from aqueous solution by natural bauxite (BXT) and BXT-HDTMA: kinetic, thermodynamic and isotherm modeling</atitle><jtitle>Desalination and water treatment</jtitle><date>2019-03</date><risdate>2019</risdate><volume>145</volume><spage>369</spage><epage>377</epage><pages>369-377</pages><issn>1944-3986</issn><abstract>Sorption is a key factor in removal of organic and inorganic contaminants from their aqueous solutions. In this study, we investigated the removal of Xylenol Orange tetrasodium salt (XOTS) from its aqueous solution by Bauxite (BXT) and cationic surfactant hexadecyltrimethyl ammonium bromide modified Bauxite (BXT-HDTMA) in batch experiments. The BXT and BXT-HDTMA were characterized using FTIR, and SEM techniques. Adsorption studies were performed at various parameters i.e. temperature, contact time, adsorbent weight, and pH. The modified BXT showed better maximum removal efficiency (98.6% at pH = 9.03) compared to natural Bauxite (75% at pH 2.27), suggesting that BXT-HDTMA is an excellent adsorbent for the removal of XOTS from water. The equilibrium data of XOTS adsorption on BXT and BXT-HDTMA surfaces were best fitted with the Freundlich isotherm model. The pseudo-second-order model provided very good fitting for the dye on the two surfaces. The error function, the sum of the absolute errors (SAE), was calculated to identify the best isotherm in this study. The thermodynamic parameters like ΔH°, ΔS° and ΔG° were also calculated. The adsorbent dosage weight and pH were found the most factors influencing the removal process.</abstract><pub>Elsevier Inc</pub><doi>10.5004/dwt.2019.23609</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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source | Alma/SFX Local Collection |
subjects | Anionic dye Cationic surfactant Iraqi Bauxite mineral clay Thermodynamic parameters |
title | Xylenol orange removal from aqueous solution by natural bauxite (BXT) and BXT-HDTMA: kinetic, thermodynamic and isotherm modeling |
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