Thermal stability of biochar and its effects on cadmium sorption capacity
- Authors
- Qi, Fangjie; Yan, Yubo; Lamb, Dane; Naidu, Ravi; Bolan, Nanthi S.; Liu, Yanju; Ok, Yong Sik; Donne, Scott W.; Semple, Kirk T.
- Issue Date
- 12월-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Biochar; Stability; Composition; Cadmium; Sorption
- Citation
- BIORESOURCE TECHNOLOGY, v.246, pp.48 - 56
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 246
- Start Page
- 48
- End Page
- 56
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/81294
- DOI
- 10.1016/j.biortech.2017.07.033
- ISSN
- 0960-8524
- Abstract
- In this study, the thermal stability of a wood shaving biochar (WS, 650 degrees C), a chicken litter biochar (CL, 550 degrees C) and an activated carbon (AC, 1100 degrees C) were evaluated by combustion at 375 degrees C for 24 h to remove the labile non-carbonized organic matter. Results showed that WS and CL biochars were not thermally stable and can lose most of the organic C during combustion. The combusted WS and CL biochars retained considerable amounts of negative charge and displayed higher sorption for Cd (from 5.46 to 68.9 mg/g for WS and from 48.5 to 60.9 mg/g for CL). The AC retained 76.5% of its original C and became more negatively chargely after combustion, but its sorption for Cd slightly decreased (from 18.5 to 14.9 mg/g). This study indicated that after potential burning in wildfires (200-500 degrees C), biochars could have higher sorption capacity for metals by remaining minerals. (C) 2017 Elsevier Ltd. 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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