Fabrication of spherical biochar by a two-step thermal process from waste potato peel
- Authors
- Yang, Xiao; Kwon, Eilhann E.; Dou, Xiaomin; Zhang, Ming; Kim, Ki-Hyun; Tsang, Daniel C. W.; Ok, Yong Sik
- Issue Date
- 1-6월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Spherical biochar; Green chemistry; Waste management; Material science; Thermochemistry
- Citation
- SCIENCE OF THE TOTAL ENVIRONMENT, v.626, pp.478 - 485
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENCE OF THE TOTAL ENVIRONMENT
- Volume
- 626
- Start Page
- 478
- End Page
- 485
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/74984
- DOI
- 10.1016/j.scitotenv.2018.01.052
- ISSN
- 0048-9697
- Abstract
- The aim of this study was to develop a new approach for the preparation of spherical biochar (SBC) by employing a two-step thermal technology to potato peel waste (PPW). Potato starch (PS), as a carbon-rich material with microscale spherical shape, was separated from PPW as a precursor to synthesizing SBC. The synthesis process comprised (1) pre-oxidization (preheating under air) of PS at 220 degrees C and (2) subsequent pyrolysis of the pretreated sample at 700 degrees C. Results showed that the produced SBC successfully retained the original PS morphology and that pre-oxidization was the key for its shape maintenance, as it reduced surface tension and enhanced structural stability. The SBC possessed excellent chemical inertness (high aromaticity) and uniform particle size (10-30 mu m). Zero-cost waste material with a facile and easy-to-control process allows the method to be readily scalable for industrialization, while offering a new perspective on the full use of PPW. (C) 2018 Elsevier B.V. All rights reserved.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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