Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption
Biochars have been successfully used to treat wastewater and contaminated soils. The efficiency of biochar as a biosorbent of heavy metals can be increased by reducing the particle size, exposing the inner pores and their functional groups. In this study, the empty fruit bunch biochar (EFBB) of oil...
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The Royal Society of Chemistry
2018
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Online Access: | http://psasir.upm.edu.my/id/eprint/73502/1/Physical%20modification%20of%20biochar%20to%20expose%20the%20inner%20pores%20and%20their%20functional%20groups%20to%20enhance%20lead%20adsorption.pdf http://psasir.upm.edu.my/id/eprint/73502/ https://pubs.rsc.org/en/content/articlelanding/2018/ra/c8ra06867d#!divAbstract |
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my.upm.eprints.735022020-05-30T17:54:57Z http://psasir.upm.edu.my/id/eprint/73502/ Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption Fahmi, Alaa Hasan Abd Wahid, Samsuri Jol, Hamdan Karam Singh, Daljit Singh Biochars have been successfully used to treat wastewater and contaminated soils. The efficiency of biochar as a biosorbent of heavy metals can be increased by reducing the particle size, exposing the inner pores and their functional groups. In this study, the empty fruit bunch biochar (EFBB) of oil palm was separated into three particle sizes, fine (F-EFBB < 50 μm), medium (M-EFBB 250–500 μm) and coarse (C-EFBB > 2000 μm) to compare their physical and chemical characteristics and their adsorption capacity for lead. Results revealed that the F-EFBB had greater surface area and exposed more micropores compared to the other particle sizes. Similarly, the F-EFBB had the most oxygen containing functional groups, CEC, and negative charges as measured by the zeta potential. The F-EFBB had the highest adsorption capacity for Pb, followed by M-EFBB and C-EFBB with the lowest. Therefore, the F-EFBB are able to adsorb more heavy metals as compared to M-EFBB and C-EFBB, as suggested by the more favourable physical and chemical characteristics. The Royal Society of Chemistry 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/73502/1/Physical%20modification%20of%20biochar%20to%20expose%20the%20inner%20pores%20and%20their%20functional%20groups%20to%20enhance%20lead%20adsorption.pdf Fahmi, Alaa Hasan and Abd Wahid, Samsuri and Jol, Hamdan and Karam Singh, Daljit Singh (2018) Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption. RSC Advances, 8. 38270 - 38280. ISSN ESSN: 2046-2069 https://pubs.rsc.org/en/content/articlelanding/2018/ra/c8ra06867d#!divAbstract 10.1039/c8ra06867d |
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Biochars have been successfully used to treat wastewater and contaminated soils. The efficiency of biochar as a biosorbent of heavy metals can be increased by reducing the particle size, exposing the inner pores and their functional groups. In this study, the empty fruit bunch biochar (EFBB) of oil palm was separated into three particle sizes, fine (F-EFBB < 50 μm), medium (M-EFBB 250–500 μm) and coarse (C-EFBB > 2000 μm) to compare their physical and chemical characteristics and their adsorption capacity for lead. Results revealed that the F-EFBB had greater surface area and exposed more micropores compared to the other particle sizes. Similarly, the F-EFBB had the most oxygen containing functional groups, CEC, and negative charges as measured by the zeta potential. The F-EFBB had the highest adsorption capacity for Pb, followed by M-EFBB and C-EFBB with the lowest. Therefore, the F-EFBB are able to adsorb more heavy metals as compared to M-EFBB and C-EFBB, as suggested by the more favourable physical and chemical characteristics. |
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Article |
author |
Fahmi, Alaa Hasan Abd Wahid, Samsuri Jol, Hamdan Karam Singh, Daljit Singh |
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Fahmi, Alaa Hasan Abd Wahid, Samsuri Jol, Hamdan Karam Singh, Daljit Singh Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
author_facet |
Fahmi, Alaa Hasan Abd Wahid, Samsuri Jol, Hamdan Karam Singh, Daljit Singh |
author_sort |
Fahmi, Alaa Hasan |
title |
Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
title_short |
Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
title_full |
Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
title_fullStr |
Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
title_full_unstemmed |
Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
title_sort |
physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption |
publisher |
The Royal Society of Chemistry |
publishDate |
2018 |
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http://psasir.upm.edu.my/id/eprint/73502/1/Physical%20modification%20of%20biochar%20to%20expose%20the%20inner%20pores%20and%20their%20functional%20groups%20to%20enhance%20lead%20adsorption.pdf http://psasir.upm.edu.my/id/eprint/73502/ https://pubs.rsc.org/en/content/articlelanding/2018/ra/c8ra06867d#!divAbstract |
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