Preparation of Magnetic Carbon Composite from Waste Amine-Oxime Resin and Its Adsorption Properties for Chromium
A waste amidoxime chelate resin (WAR) was converted into a magnetic composite adsorbent (MCA) via carbonization and magnetization for the effective removal of Cr(VI). Under optimized conditions (pH = 1, 30 °C, 1 h), the adsorbent achieved a maximum Cr(VI) adsorption capacity of 197.63 mg/g. The adsorption process conformed to the pseudo-second-order kinetic model (R<sup>2</sup> > 0.98) and Langmuir isotherm model (R<sup>2</sup> > 0.99). The materials can be separated by magnetism. The primary mechanism for the adsorption of Cr(VI) involved monolayer chemisorption. FTIR spectroscopy confirmed the dominant role of -C=O, C-O, and Fe-O in the adsorption process. XPS spectroscopy confirmed the dominant role of -C=O and C-O in the adsorption process. The successful conversion of the WAR into an MCA not only mitigates waste accumulation but also provides a cost-effective strategy for heavy metal remediation.
Authors
- Yuhang Yuan (ORCID: https://orcid.org/0000-0002-0840-3547)
- Wenchao Yang
- Chunlin He (ORCID: https://orcid.org/0000-0002-2748-5023)
- Jing Wu (ORCID: https://orcid.org/0000-0001-8724-3686)
- Haoyu Wang (ORCID: https://orcid.org/0000-0002-2124-3453)
- Xiang-long Su (ORCID: https://orcid.org/0009-0004-4897-1428)
- Hongdan Yu
Institutions
- Guangxi University (CN)
- Ministry of Natural Resources (CN)
- Guangxi Zhuang Autonomous Region Health and Family Planning (CN)
Publication Details
- Journal
- Materials
- Published
- 2025-06-27
- DOI
- https://doi.org/10.3390/ma18133066
- Primary Topic
- Adsorption and biosorption for pollutant removal
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Guangxi Province