Fabrication and environmental applications of multifunctional mixed metal-biochar composites (MMBC) from red mud and lignin wastes
- Authors
- Cho, Dong-Wan; Yoon, Kwangsuk; Ahn, Yongtae; Su, Yuqing; Tsang, Daniel C. W.; Hou, Deyi; Ok, Yong Sik; Son, Hocheol
- Issue Date
- 15-7월-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Waste biomass valorization; Bauxite residue; Syngas production; Engineered biochar; Metallic iron-carbon composites
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.374, pp.412 - 419
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 374
- Start Page
- 412
- End Page
- 419
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64105
- DOI
- 10.1016/j.jhazmat.2019.04.071
- ISSN
- 0304-3894
- Abstract
- This study fabricated a new and multifunctional mixed metal-biochar composites (MMBC) using the mixture of two abundant industrial wastes, red mud (RM) and lignin, via pyrolysis under N(2 )atmosphere, and its ability to treat wastewater containing various contaminants was comprehensively evaluated. A porous structure (BET surface area = 100.8 m(2) g(-1)) was created and metallic Fe was formed in the MMBC owing to reduction of Fe oxides present in RM by lignin decomposition products during pyrolysis at 700 degrees C, which was closely associated with the transformation of liquid to gaseous pyrogenic products. The potential application of the MMBC was investigated for the removal of heavy metals (Pb(II) and Ni(II)), oxyanions (As(V) and Cr(VI)), dye (methylene blue), and pharmaceutical/personal care products (para-nitrophenol and pCBA). The aluminosilicate mineral, metallic Fe, and porous carbon matrix derived from the incorporation of RM and lignin contributed to the multifunctionality (i.e., adsorption, chemical reduction, and catalytic reaction) of the MMBC. Thus, engineered biochar composites synthesized from selected industrial wastes can be a potential candidate for environmental applications.
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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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