Magnetic hydrochar from the extract and residue of herbal medicines for adsorption and Fenton reaction
文献类型： 外文期刊
作者： Huang, Xiaoli 1 ; Hua, Fangcong 4 ; Hu, Qi 4 ; Huo, Tangbin 1 ; Li, Wei 2 ; Wang, Yumei 1 ; Liu, Shouxin 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
2.Northeast Forestry Univ, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China
3.Heilongjiang River Basin Fisheries Ecol Observat &, Harbin, Peoples R China
4.Shenyang Pharmaceut Univ, Sch Pharmaceut Engn, Shenyang 110016, Liaoning, Peoples R China
关键词： Clematis residues; Hydrochars; Silymarin; Water treatment; Heterogeneous Fenton
期刊名称：POWDER TECHNOLOGY （ 影响因子：5.2； 五年影响因子：5.0 ）
ISSN： 0032-5910
年卷期： 2023 年 427 卷
页码：
收录情况： SCI
摘要： Residues of herbs medicines are potential resources to prepare hydrochar. However, problems such as limited adsorption capacity and difficulty in recovery restrict the application of residues. Here, Ferrous sulfate heptahydrate (FeSO4 center dot H2O) was used to load Fe3O4 to prepare Fe3O4-modified hydrochar (Fe-CBC). Herbal extract (silymarin) was used to prepare functionalized hydrochar (Sil-Fe-CBC) for the first time by using the residue of clematis. Sil-Fe-CBC was used to remove methylene blue (MB) and tetracycline (TC) from water. The MB adsorption quantity was increased to 124.7 mg/g within 30 min, and the removal was increased to 84.26%. The TC removal was achieved approximately 91% in 120 min at an optimum pH of 3, an H2O2 dosage of 0.4 mL, a Sil-Fe-CBC dosage of 0.6 g/L, and a temperature of 30 degrees C. The FTIR spectra and XRD spectrum studies confirm that the form of center dot OH is linked to Fe2+ in the catalysis process via the reduction of silymarin. Silymarin functionalization is a new approach to promote the efficiency of Fenton. Herbal medicine residues are potential raw materials in hydrochar preparation, and the extracts can improve hydrochars' performance.
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