Sustainable production of value-added sulfonated biochar by sulfuric acid carbonization reduction of rice husks
- Resource Type
- ACADEMIC JOURNAL
- Zhou, Zhimao a, ⁎; Yao, Daqing a; Li, Shifei a; Xu, Fei a; Liu, Ying a; Liu, Ruixia a; Chen, Zhaohui b
- In Environmental Technology & Innovation November 2021 24
@@@@Highlights •A new low-cost method of sulfuric acid carbonization for reducing biomass to prepare sulfonated biochar is introduced.•The sulfonated biochar prepared by the carbonization reaction of rice husk with alkylated waste sulfuric acid had higher carbon yield and showed greater carbon sequestration capacity.•The sulfonated biochar has abundant functional groups including SO3H, OH and exhibits excellent adsorption performance for Cd2+.•This study is inspiring and leading to the preparation of high value-added sulfonated carbon materials in a safe, economical and sustainable way.