Effective Removal of Cr(VI) from Wastewater Using Biochar Derived from Walnut Shell
Heavy metals are the major concern of the modern age. Among the heavy metals, chromium (Cr(VI)) is regarded as a highly toxic heavy metal released largely from leather tanning operations. To remove such high concentrations of Cr(VI), an advanced method is required urgently. Thus, biosorption using b...
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| Veröffentlicht in: | International journal of environmental research and public health 2021-09, Vol.18 (18), p.9670 |
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| creator | Kokab, Tanzeela Ashraf, Hafiza Sumbal Shakoor, Muhammad Bilal Jilani, Asim Ahmad, Sajid Rashid Majid, Muzaffar Ali, Shafaqat Farid, Nazar Alghamdi, Rana A. Al-Quwaie, Diana A. H. Hakeem, Khalid Rehman |
| description | Heavy metals are the major concern of the modern age. Among the heavy metals, chromium (Cr(VI)) is regarded as a highly toxic heavy metal released largely from leather tanning operations. To remove such high concentrations of Cr(VI), an advanced method is required urgently. Thus, biosorption using biochar, which is an organic material produced from various sources such as walnut shell, can be applied successfully for Cr(VI) abatement. The major objectives of this experiment were the remediation of the Cr(VI) heavy metal using walnut shell biochar and checking of the effect of pH, biochar dosage, Cr level, and shaking time. Remediation of Cr(VI) using walnut shell biochar was proved to be effective and removed the maximum concentration of Cr(VI) up to 93% at pH 5.5, 2 h agitation time, and the biochar amount of 1.1 g L−1 from an aqueous solution. Equilibrium modeling demonstrated that the chemisorption process was involved in adsorption of Cr(VI). The surface of the biochar was porous and provided numerous sites for Cr(VI) attachment, which was also confirmed by the presence of Cr(VI) onto the biochar after adsorption. Hence, the use of walnut shell biochar was highly effective as a sorbent, which could conveniently be applied to small-scale as well as large-scale levels. |
| doi_str_mv | 10.3390/ijerph18189670 |
| format | Article |
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H. ; Hakeem, Khalid Rehman</creator><creatorcontrib>Kokab, Tanzeela ; Ashraf, Hafiza Sumbal ; Shakoor, Muhammad Bilal ; Jilani, Asim ; Ahmad, Sajid Rashid ; Majid, Muzaffar ; Ali, Shafaqat ; Farid, Nazar ; Alghamdi, Rana A. ; Al-Quwaie, Diana A. H. ; Hakeem, Khalid Rehman</creatorcontrib><description>Heavy metals are the major concern of the modern age. Among the heavy metals, chromium (Cr(VI)) is regarded as a highly toxic heavy metal released largely from leather tanning operations. To remove such high concentrations of Cr(VI), an advanced method is required urgently. Thus, biosorption using biochar, which is an organic material produced from various sources such as walnut shell, can be applied successfully for Cr(VI) abatement. The major objectives of this experiment were the remediation of the Cr(VI) heavy metal using walnut shell biochar and checking of the effect of pH, biochar dosage, Cr level, and shaking time. Remediation of Cr(VI) using walnut shell biochar was proved to be effective and removed the maximum concentration of Cr(VI) up to 93% at pH 5.5, 2 h agitation time, and the biochar amount of 1.1 g L−1 from an aqueous solution. Equilibrium modeling demonstrated that the chemisorption process was involved in adsorption of Cr(VI). The surface of the biochar was porous and provided numerous sites for Cr(VI) attachment, which was also confirmed by the presence of Cr(VI) onto the biochar after adsorption. Hence, the use of walnut shell biochar was highly effective as a sorbent, which could conveniently be applied to small-scale as well as large-scale levels.</description><identifier>ISSN: 1660-4601</identifier><identifier>ISSN: 1661-7827</identifier><identifier>EISSN: 1660-4601</identifier><identifier>DOI: 10.3390/ijerph18189670</identifier><identifier>PMID: 34574595</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Adsorption ; Aqueous solutions ; Biosorption ; Charcoal ; Chemisorption ; Chromium ; Heavy metals ; Leather ; Moisture content ; Morphology ; Remediation ; Sorbents ; Spectrum analysis ; Tanning ; Walnuts ; Wastewater</subject><ispartof>International journal of environmental research and public health, 2021-09, Vol.18 (18), p.9670</ispartof><rights>2021 by the authors. Licensee MDPI, Basel, Switzerland. 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Remediation of Cr(VI) using walnut shell biochar was proved to be effective and removed the maximum concentration of Cr(VI) up to 93% at pH 5.5, 2 h agitation time, and the biochar amount of 1.1 g L−1 from an aqueous solution. Equilibrium modeling demonstrated that the chemisorption process was involved in adsorption of Cr(VI). The surface of the biochar was porous and provided numerous sites for Cr(VI) attachment, which was also confirmed by the presence of Cr(VI) onto the biochar after adsorption. 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H.</au><au>Hakeem, Khalid Rehman</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effective Removal of Cr(VI) from Wastewater Using Biochar Derived from Walnut Shell</atitle><jtitle>International journal of environmental research and public health</jtitle><date>2021-09-14</date><risdate>2021</risdate><volume>18</volume><issue>18</issue><spage>9670</spage><pages>9670-</pages><issn>1660-4601</issn><issn>1661-7827</issn><eissn>1660-4601</eissn><abstract>Heavy metals are the major concern of the modern age. Among the heavy metals, chromium (Cr(VI)) is regarded as a highly toxic heavy metal released largely from leather tanning operations. To remove such high concentrations of Cr(VI), an advanced method is required urgently. Thus, biosorption using biochar, which is an organic material produced from various sources such as walnut shell, can be applied successfully for Cr(VI) abatement. The major objectives of this experiment were the remediation of the Cr(VI) heavy metal using walnut shell biochar and checking of the effect of pH, biochar dosage, Cr level, and shaking time. Remediation of Cr(VI) using walnut shell biochar was proved to be effective and removed the maximum concentration of Cr(VI) up to 93% at pH 5.5, 2 h agitation time, and the biochar amount of 1.1 g L−1 from an aqueous solution. Equilibrium modeling demonstrated that the chemisorption process was involved in adsorption of Cr(VI). The surface of the biochar was porous and provided numerous sites for Cr(VI) attachment, which was also confirmed by the presence of Cr(VI) onto the biochar after adsorption. 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| subjects | Adsorption Aqueous solutions Biosorption Charcoal Chemisorption Chromium Heavy metals Leather Moisture content Morphology Remediation Sorbents Spectrum analysis Tanning Walnuts Wastewater |
| title | Effective Removal of Cr(VI) from Wastewater Using Biochar Derived from Walnut Shell |
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