Fabrication of spherical biochar by a two-step thermal process from waste potato peel
- Title
- Fabrication of spherical biochar by a two-step thermal process from waste potato peel
- Author
- 김기현
- Keywords
- Green chemistry; Waste management; Material science; Thermochemistry
- Issue Date
- 2018-06
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- SCIENCE OF THE TOTAL ENVIRONMENT, v. 626, page. 478-485
- 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.
- URI
- https://www.sciencedirect.com/science/article/pii/S0048969718300615?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/119224
- ISSN
- 0048-9697; 1879-1026
- DOI
- 10.1016/j.scitotenv.2018.01.052
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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