Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon
In this study, activated carbons (ACs) were prepared from tea leaves by using a two-stage self-generated atmosphere method. The process was done by semi-carbonizing the precursor at 300 oC for 1 h, followed by the impregnation of the resulting char at 85 oC for 4 h and finally activation at 500 oC f...
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my.ums.eprints.289882021-09-06T03:31:07Z https://eprints.ums.edu.my/id/eprint/28988/ Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon Collin Glen Joseph Anthony Joseph S M Anisuzzaman Daud, W M A W Duduku Krishnaiah K A Ng SB409-413 Culture of individual plants In this study, activated carbons (ACs) were prepared from tea leaves by using a two-stage self-generated atmosphere method. The process was done by semi-carbonizing the precursor at 300 oC for 1 h, followed by the impregnation of the resulting char at 85 oC for 4 h and finally activation at 500 oC for 2 h. The semi-carbonised samples were impregnated with different ratios of zinc chloride (ZnCl2) and their physicochemical effect was studied. The prepared ACs underwent several aspects of both, chemical and physical characterizations, such as the percentage of yield, moisture content, ash content, pH, porosity, adsorption capacity of 2,4-dichlorophenol (2,4-DCP), surface area, porosity, morphology and surface chemistry studies. It was found that sample AC2, with an impregnation ratio of 2:1 was the best AC produced in this study. The maximum Brunauer, Emmett and Teller surface area of AC2 was found to be 695 m2/g. Langmuir, Freundlich and Temkin isotherm models were used to examine the experimental isotherms while the kinetic data was analyzed using the pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic models. The 2,4-DCP adsorption isotherm results complied well to the Langmuir isotherm for the equilibrium data while the adsorption kinetic data fitted well to the pseudo-second order model, indicating that chemisorption by valency forces via the sharing (covalent bond) or exchanging of electrons between the AC and the 2,4-DCP molecules were mainly responsible for the adsorption process. From these findings, it is concluded that tea leaves can be used as a low cost precursor for the removal of 2,4-DCP in aqueous medium. IOP Publishing 2017-12-03 Conference or Workshop Item PeerReviewed text en https://eprints.ums.edu.my/id/eprint/28988/1/Chlorinated%20phenol%20removal%20from%20aqueous%20media%20by%20tea%20%28Camellia%20sinensis%29%20leaf%20waste%20tailored%20activated%20carbon%20ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/28988/3/Chlorinated%20phenol%20removal%20from%20aqueous%20media%20by%20tea%20%28Camellia%20sinensis%29%20leaf%20waste%20tailored%20activated%20carbon%20FULL%20TEXT.pdf Collin Glen Joseph Anthony Joseph and S M Anisuzzaman and Daud, W M A W and Duduku Krishnaiah and K A Ng (2017) Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon. In: 29th Symposium of Malaysian Chemical Engineers (SOMChE) 2016, 1-3 December 2016, Miri, Malaysia. https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012099/pdf |
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SB409-413 Culture of individual plants Collin Glen Joseph Anthony Joseph S M Anisuzzaman Daud, W M A W Duduku Krishnaiah K A Ng Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
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In this study, activated carbons (ACs) were prepared from tea leaves by using a two-stage self-generated atmosphere method. The process was done by semi-carbonizing the precursor at 300 oC for 1 h, followed by the impregnation of the resulting char at 85 oC for 4 h and finally activation at 500 oC for 2 h. The semi-carbonised samples were impregnated with different ratios of zinc chloride (ZnCl2) and their physicochemical effect was studied. The prepared ACs underwent several aspects of both, chemical and physical characterizations, such as the percentage of yield, moisture content, ash content, pH, porosity, adsorption capacity of 2,4-dichlorophenol (2,4-DCP), surface area, porosity, morphology and surface chemistry studies. It was found that sample AC2, with an impregnation ratio of 2:1 was the best AC produced in this study. The maximum Brunauer, Emmett and Teller surface area of AC2 was found to be 695 m2/g. Langmuir, Freundlich and Temkin isotherm models were used to examine the experimental isotherms while the kinetic data was analyzed using the pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic models. The 2,4-DCP adsorption isotherm results complied well to the Langmuir isotherm for the equilibrium data while the adsorption kinetic data fitted well to the pseudo-second order model, indicating that chemisorption by valency forces via the sharing (covalent bond) or exchanging of electrons between the AC and the 2,4-DCP molecules were mainly responsible for the adsorption process. From these findings, it is concluded that tea leaves can be used as a low cost precursor for the removal of 2,4-DCP in aqueous medium. |
format |
Conference or Workshop Item |
author |
Collin Glen Joseph Anthony Joseph S M Anisuzzaman Daud, W M A W Duduku Krishnaiah K A Ng |
author_facet |
Collin Glen Joseph Anthony Joseph S M Anisuzzaman Daud, W M A W Duduku Krishnaiah K A Ng |
author_sort |
Collin Glen Joseph Anthony Joseph |
title |
Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
title_short |
Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
title_full |
Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
title_fullStr |
Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
title_full_unstemmed |
Chlorinated phenol removal from aqueous media by tea (Camellia sinensis) leaf waste tailored activated carbon |
title_sort |
chlorinated phenol removal from aqueous media by tea (camellia sinensis) leaf waste tailored activated carbon |
publisher |
IOP Publishing |
publishDate |
2017 |
url |
https://eprints.ums.edu.my/id/eprint/28988/1/Chlorinated%20phenol%20removal%20from%20aqueous%20media%20by%20tea%20%28Camellia%20sinensis%29%20leaf%20waste%20tailored%20activated%20carbon%20ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/28988/3/Chlorinated%20phenol%20removal%20from%20aqueous%20media%20by%20tea%20%28Camellia%20sinensis%29%20leaf%20waste%20tailored%20activated%20carbon%20FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/28988/ https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012099/pdf |
_version_ |
1760230660277010432 |
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13.188404 |