Mechanistic insights of 2,4-D sorption onto biochar: Influence of feedstock materials and biochar properties
- Authors
- Mandal, Sanchita; Sarkar, Binoy; Igalavithana, Avanthi Deshani; Ok, Yong Sik; Yang, Xiao; Lombi, Enzo; Bolan, Nanthi
- Issue Date
- 12월-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- 2,4-D; Biochar; Pyrolysis; Physical activation; Sorption kinetics
- Citation
- BIORESOURCE TECHNOLOGY, v.246, pp.160 - 167
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 246
- Start Page
- 160
- End Page
- 167
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/81279
- DOI
- 10.1016/j.biortech.2017.07.073
- ISSN
- 0960-8524
- Abstract
- Objective of this study was to investigate the mechanisms of 2,4-Dichlorophynoxy acetic acid (2,4-D) sorption on biochar in aqueous solutions. Sorption isotherm, kinetics, and desorption experiments were performed to identify the role of biochars' feedstock and production conditions on 2,4-D sorption. Biochars were prepared from various green wastes (tea, burcucumber, and hardwood) at two pyrolytic temperatures (400 and 700 degrees C). The tea waste biochar produced at 700 degrees C was further activated with steam under a controlled flow. The sorption of 2,4-D was strongly dependent on the biochar properties such as specific surface area, surface functional groups, and microporosity. The steam activated biochar produced from tea waste showed the highest (58.8 mg g (1)) 2,4-D sorption capacity, which was attributed to the high specific surface area (576 m(2) g (1)). The mechanism of 2,4-D removal from aqueous solution by biochar is mainly attributed to the formation of heterogeneous sorption sites due to the steam activation. (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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