西华大学学报（自然科学版）2025，Vol.44Issue(2)：38-47,105,11.DOI:10.12198/j.issn.1673-159X.5399
花生壳生物炭负载铁酸锰活化过硫酸钠降解罗丹明B
Magnetic Biochar Activated Persulfate Degradation of Rhodamine B
摘要
Abstract
The magnetic separation and recovery of MnFe2O4@biochar(MBC)was prepared from ag-ricultural waste peanut shell by high-temperature calcination and co-precipitation method,and the morpho-logy and structure of MBC were characterized and analyzed.Rhodamine B(RhB)was degraded by MBC activated sodium persulfate(SPS).The effects of MBC dosage,SPS concentration,initial pH value of solu-tion and co-existing ions on RhB degradation rate were investigated,and the reuse performance of MBC was also investigated.The results show that when the initial concentration of RhB is 10 mg/L,the initial pH value of the solution is 6.50,the MBC dosage is 0.4 g/L,and the SPS concentration is 2.0 mmol/L,the de-gradation rate of RhB reaches 93.2%in 120 minutes.Its degradation rate increases with the increase of MBC dosage and SPS concentration,and has a higher degradation rate at lower pH values(1-7).Humic acid,Cl-,and HCO3-have a certain inhibitory effect on the degradation of RhB.The saturation magnetiza-tion of MBC is 5.28 emu/g,indicating that it is easy to magnetic recovery.MBC has good magnetism and stability,and after three cycles,the RhB degradation rate can still reach 73.8%.关键词
磁性生物炭/过硫酸盐/罗丹明B/催化降解/高级氧化技术Key words
magnetic biochar/persulfate/Rhodamine B/catalytic degradation/advanced oxidation technology分类
环境科学引用本文复制引用
曹寿清,张亮,张金爽,潘思佳..花生壳生物炭负载铁酸锰活化过硫酸钠降解罗丹明B[J].西华大学学报（自然科学版）,2025,44(2):38-47,105,11.基金项目
云南省科技厅重点研发计划项目(202303AC100018). （202303AC100018）
