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Open AccessFeature PaperReview

The Potentiality of Rice Husk-Derived Activated Carbon: From Synthesis to Application

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Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
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Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
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Center for Green Technologies, School of Civil and Environmental Engineering, University of Technology Sydney, 15, Broadway, Sydney, NSW-2007, Australia
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Department of Chemistry, Rajshahi University Engineering and Technology, Rajshahi 6204, Bangladesh
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School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
*
Authors to whom correspondence should be addressed.
Processes 2020, 8(2), 203; https://doi.org/10.3390/pr8020203
Received: 12 January 2020 / Revised: 1 February 2020 / Accepted: 2 February 2020 / Published: 6 February 2020
(This article belongs to the Special Issue Carbonaceous Materials for CO2 Capture and Pollutants Removal)
Activated carbon (AC) has been extensively utilized as an adsorbent over the past few decades. AC has widespread applications, including the removal of different contaminants from water and wastewater, and it is also being used in capacitors, battery electrodes, catalytic supports, and gas storage materials because of its specific characteristics e.g., high surface area with electrical properties. The production of AC from naturally occurring precursors (e.g., coal, biomass, coconut shell, sugarcane bagasse, and so on) is highly interesting in terms of the material applications in chemistry; however, recently much focus has been placed on the use of agricultural wastes (e.g., rice husk) to produce AC. Rice husk (RH) is an abundant as well as cheap material which can be converted into AC for various applications. Various pollutants such as textile dyes, organic contaminants, inorganic anions, pesticides, and heavy metals can be effectively removed by RH-derived AC. In addition, RH-derived AC has been applied in supercapacitors, electrodes for Li-ion batteries, catalytic support, and energy storage, among other uses. Cost-effective synthesis of AC can be an alternative for AC production. Therefore, this review mainly covers different synthetic routes and applications of AC produced from RH precursors. Different environmental, catalytic, and energy applications have been pinpointed. Furthermore, AC regeneration, desorption, and relevant environmental concerns have also been covered. Future scopes for further research and development activities are also discussed. Overall, it was found that RH-derived AC has great potential for different applications which can be further explored at real scales, i.e., for industrial applications in the future.
Keywords: rice husk; activations; adsorptions; dye; heavy metals; applications rice husk; activations; adsorptions; dye; heavy metals; applications
MDPI and ACS Style

Alam, M.M.; Hossain, M.A.; Hossain, M.D.; Johir, M.; Hossen, J.; Rahman, M.S.; Zhou, J.L.; Hasan, A.K.; Karmakar, A.K.; Ahmed, M.B. The Potentiality of Rice Husk-Derived Activated Carbon: From Synthesis to Application. Processes 2020, 8, 203.

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