Preparation of chitosan-EDTA bifunctionally modified magnetic walnut shell biochar and study on its copper ion (Cu( ii )) adsorption performance

RSC Advances 2026 Open access

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Authors: Xuejian Zhou, Yufei Yang, Ruiqi Yang, Lei Shi, Ling Zhou, Xifeng Lv
DOI: 10.1039/d5ra08820h
Cited by: 7
References: 47

Abstract

), enables rapid magnetic separation within seconds, and retains 91.13% of its initial adsorption capacity after five adsorption-desorption cycles. By integrating the combined advantages of EDTA (high selectivity), chitosan (abundant complexation sites), and magnetic biochar (easy separation), this study fills the gaps in existing literature and provides an efficient, sustainable, and engineering-applicable solution for heavy metal pollution control and high-value utilization of agricultural waste.

Fields of Study & Subjects

Adsorption and biosorption for pollutant removal Phosphorus and nutrient management Extraction and Separation Processes

Publication details

Journal / source
RSC Advances
Publisher
Royal Society of Chemistry (RSC)
Volume
16
Issue
4
Pages
3220–3230
Publication date
1 January 2026
Language
EN