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- Title
Effective Removal of Aqueous Cu(II) Pollution by a Novel Readily Prepared Porous Biomaterial Using Crab Shell Wastes.
- Authors
Ge, Ya-Ming; Zhang, Liang; Zhang, Yong; Yang, Jia-Shun; Gao, Hui-Min; Li, Shi-Jie; Liu, Jun-Zhi
- Abstract
Using crustacean shell wastes to produce chitin/chitosan-based biosorbents has gained increasing attention because of its promising potential for waste recycling and environmental remediation. However, from raw materials to final biosorbents, the traditional acid-alkaline-treated chitin suffered from complicated procedures and serious secondary pollution. In this work, via an integrating one-step environmental-friendly procedure, a novel EDTA-grafted chitin (ECH) was successfully prepared using Portunus trituberculata shells. The obtained biomaterial possessed a three-dimensional porous microstructure and extra functional groups, and showed exceptional adsorption efficiency and reusability for Cu(II) adsorption. The highest Cu(II) removal rate reached 99.4%, while the corresponding adsorption capacity reached 223.70 mg g−1. Moreover, the adsorption data followed better with the Langmuir isotherm model, while it fitted well with both the pseudo-first-order model and the pseudo-second-order kinetics model. Further study suggested that the adsorption mechanisms of Cu(II) by the ECH should be a formation of EDTA–chitin–Cu complex. These findings would enlighten the development of more novel chitin-based biosorbents using crustacean shell wastes via more facile and green ways, as well as their application as biosorbents for environmental restoration.
- Subjects
CRAB shells; COPPER; LEAD removal (Sewage purification); LANGMUIR isotherms; ENVIRONMENTAL remediation; POLLUTION; ETHYLENEDIAMINETETRAACETIC acid
- Publication
Water, Air & Soil Pollution, 2023, Vol 234, Issue 4, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-023-06249-0