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Wu HY, Chen SS, Liao W, Wang W, Jang MF, Chen WH, Ahamad T, Alshehri SM, Hou CH, Lin KS, Charinpanitkul T, Wu KCW. Assessment of agricultural waste-derived activated carbon in multiple applications. Environ Res 2020; 191:110176. [PMID: 32950515 DOI: 10.1016/j.envres.2020.110176] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/20/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
To minimize waste production and reduce reliance on fossil fuels, agricultural waste such as rice straw has been actively used in biochemical production. In Taiwan, cellulosic waste has been used in anaerobic digestion for bioethanol production. This process produces a large amount of biomass-associated sludge that may become a serious environmental issue. Therefore, in this study, the anaerobic digestion sludge was recycled for the production of activated carbon via pyrolysis and activation by KOH. Surface characterization showed increased surface area and development of microporous structure upon activation. The FTIR image showed that high temperature activation eliminated most functional groups in the activated carbon, except for CO and C-O groups. The results showed that the activated carbon could be used for pollutant adsorbents such as molecular dyes (methylene blue: 217 mg g-1) and metal ions (copper: 169 mg g-1) from aqueous solution. In addition, the as-synthesized activated carbon can be used for CO2 capture and capacitor. Instead of focusing on one single application, we proposed that centralized production of activated carbon could be used in various applications, while further modification could be adopted depending on the need of its specific application.
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Affiliation(s)
- Hsi-Yen Wu
- Ph.D.Program of Green Materials and Precision Devices, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Season S Chen
- Department of Chemical Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Weisheng Liao
- Department of Chemical Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Wei Wang
- Chemistry Division, Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, No. 1000, Wenhua Rd., Jiaan Village, Longtan District, Taoyuan City, 32546, Taiwan
| | - Ming-Feng Jang
- Chemistry Division, Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, No. 1000, Wenhua Rd., Jiaan Village, Longtan District, Taoyuan City, 32546, Taiwan
| | - Wen-Hua Chen
- Chemistry Division, Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, No. 1000, Wenhua Rd., Jiaan Village, Longtan District, Taoyuan City, 32546, Taiwan.
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Saad M Alshehri
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Chia-Hung Hou
- Graduate Institute of Environmental Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Kuen-Song Lin
- Department of Chemical Engineering and Materials Science/Environmental Technology Research Center, Yuan Ze University, Chung-Li District, Taoyuan City, 32003, Taiwan.
| | - Tawatchai Charinpanitkul
- Center of Excellence in Particle Technology and Material Processing, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kevin C-W Wu
- Ph.D.Program of Green Materials and Precision Devices, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan; Department of Chemical Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan.
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