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Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation

Preparation porous bio-char and activated carbon from rice husk char study has been conducted in this study. Rice husk char contains high amount silica that retards the porousness of bio-char. Porousness of rice husk char could be enhanced by removing the silica from char and applying heat at high t...

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Autores principales: Ahiduzzaman, Md., Sadrul Islam, A. K. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4972807/
https://www.ncbi.nlm.nih.gov/pubmed/27536531
http://dx.doi.org/10.1186/s40064-016-2932-8
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author Ahiduzzaman, Md.
Sadrul Islam, A. K. M.
author_facet Ahiduzzaman, Md.
Sadrul Islam, A. K. M.
author_sort Ahiduzzaman, Md.
collection PubMed
description Preparation porous bio-char and activated carbon from rice husk char study has been conducted in this study. Rice husk char contains high amount silica that retards the porousness of bio-char. Porousness of rice husk char could be enhanced by removing the silica from char and applying heat at high temperature. Furthermore, the char is activated by using chemical activation under high temperature. In this study no inert media is used. The study is conducted at low oxygen environment by applying biomass for consuming oxygen inside reactor and double crucible method (one crucible inside another) is applied to prevent intrusion of oxygen into the char. The study results shows that porous carbon is prepared successfully without using any inert media. The adsorption capacity of material increased due to removal of silica and due to the activation with zinc chloride compared to using raw rice husk char. The surface area of porous carbon and activated carbon are found to be 28, 331 and 645 m(2) g(−1) for raw rice husk char, silica removed rice husk char and zinc chloride activated rice husk char, respectively. It is concluded from this study that porous bio-char and activated carbon could be prepared in normal environmental conditions instead of inert media. This study shows a method and possibility of activated carbon from agro-waste, and it could be scaled up for commercial production.
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spelling pubmed-49728072016-08-17 Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation Ahiduzzaman, Md. Sadrul Islam, A. K. M. Springerplus Research Preparation porous bio-char and activated carbon from rice husk char study has been conducted in this study. Rice husk char contains high amount silica that retards the porousness of bio-char. Porousness of rice husk char could be enhanced by removing the silica from char and applying heat at high temperature. Furthermore, the char is activated by using chemical activation under high temperature. In this study no inert media is used. The study is conducted at low oxygen environment by applying biomass for consuming oxygen inside reactor and double crucible method (one crucible inside another) is applied to prevent intrusion of oxygen into the char. The study results shows that porous carbon is prepared successfully without using any inert media. The adsorption capacity of material increased due to removal of silica and due to the activation with zinc chloride compared to using raw rice husk char. The surface area of porous carbon and activated carbon are found to be 28, 331 and 645 m(2) g(−1) for raw rice husk char, silica removed rice husk char and zinc chloride activated rice husk char, respectively. It is concluded from this study that porous bio-char and activated carbon could be prepared in normal environmental conditions instead of inert media. This study shows a method and possibility of activated carbon from agro-waste, and it could be scaled up for commercial production. Springer International Publishing 2016-08-03 /pmc/articles/PMC4972807/ /pubmed/27536531 http://dx.doi.org/10.1186/s40064-016-2932-8 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Research
Ahiduzzaman, Md.
Sadrul Islam, A. K. M.
Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title_full Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title_fullStr Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title_full_unstemmed Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title_short Preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
title_sort preparation of porous bio-char and activated carbon from rice husk by leaching ash and chemical activation
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4972807/
https://www.ncbi.nlm.nih.gov/pubmed/27536531
http://dx.doi.org/10.1186/s40064-016-2932-8
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