Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems

Rui Shan; Yueyue Shi; Jing Gu; Yazhuo Wang; Haoran Yuan

doi:10.1016/j.cjche.2020.02.012

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Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems
- Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems
- 中国化学工程学报（英文版） 2020年28卷第5期页码：1375-1383
- Affiliations：
  
  1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences,Guangzhou,China,510640
  2. Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou,China,511458
  3. CAS Key Laboratory of Renewable Energy,Guangzhou,China,510640
  4. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou,China,510640
  5. Nano Science and Technology Institute, University of Science and Technology of China,Suzhou,China,215123
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.02.012
  中图分类号：
- 纸质出版：2020
- Accepted：
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Rui Shan, Yueyue Shi, Jing Gu, 等. Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems[J]. 中国化学工程学报（英文版）, 2020,28(5):1375-1383.

Rui Shan, Yueyue Shi, Jing Gu, Yazhuo Wang, Haoran Yuan. Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems[J]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1375-1383.
Rui Shan, Yueyue Shi, Jing Gu, 等. Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems[J]. 中国化学工程学报（英文版）, 2020,28(5):1375-1383. DOI： 10.1016/j.cjche.2020.02.012.

Rui Shan, Yueyue Shi, Jing Gu, Yazhuo Wang, Haoran Yuan. Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems[J]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1375-1383. DOI： 10.1016/j.cjche.2020.02.012.

摘要

Abstract

Converting peanut shells into biochar by pyrolysis was considered an environmentally friendly and efficient method for agricultural solid waste disposal. The properties of peanut shell-derived biochar (PBC) under different temperature and its adsorption capacity of heavy metals were investigated. It was found that PBC400 exhibited the highest cumulative capability for heavy metals elimination in single solute because of its high specific surface area and rich functional groups. Furthermore

the competitive adsorption revealed that PBC had a substantial difference in adsorption affinity from diverse heavy metal ions

sorption capacity decreased as Pb

which was lower than in a single solute. The adsorption process using selected biochar was optimized with respect to pH

reaction time

adsorbent dose

and initial concentration of heavy metals. The kinetic data was well fitted with PSO model

and the Langmuir model was adopted for adsorption equilibrium data in both cases of single solutes and mixed solutes for all heavy metals

which indicated that the removal

course was primarily explained by monolayer adsorption

and chemical adsorption occupied an important role. Therefore

peanut shells derived biochar could be a potential and green adsorbent for wastewater treatment.

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