负载FeOOH刺梨渣生物质炭对水中氟的吸附效果

doi:10.16036/j.issn.1000-2650.202203175

摘要/Abstract

摘要： 目的: 明确负载FeOOH刺梨渣生物质炭对水中氟的吸附效果。方法: 以刺梨渣为原材料,采用醇助水热法制备了新型生物质炭FeOOH-BC。以水溶液中氟离子为目标污染物进行静态吸附实验,考察溶液pH、吸附剂投加量、吸附时间和初始浓度对氟离子吸附效果的影响。结果: 当吸附反应条件pH=6、T=25 ℃、氟离子初始浓度50 mg/L、吸附剂投加量0.05 g时,震荡吸附24 h,FeOOH-BC对氟离子去除率达95.27%。结论: FeOOH的引入可以极大地提高生物质炭对氟离子的吸附性能,其可能以多层吸附与化学吸附为主。

关键词: 氟, 刺梨渣, 生物质炭, FeOOH, 动力学

Abstract: 【Objective】 This study aims to determine the adsorption effect of biomass carbon loaded with FeOOH Rosa roxburghii residue on fluoride in water. 【Method】 A new type of biomass carbon FeOOH-BC was prepared from Rosa roxburghii residue by alcohol assisted hydrothermal method. The static adsorption experiment was carried out with fluoride ion in aqueous solution as the target pollutant to investigate the effects of solution pH,adsorbent dosage,adsorption time and initial concentration on fluoride ion adsorption. 【Result】 When the adsorption reaction conditions were set as： pH=6, T=25℃, the initial concentration of fluoride ion is 50 mg/L,and the dosage of adsorbent =0.05 g, and the shaking adsorption lasted for 24 hours, the removal rate of fluoride ion by FeOOH-BC reached 95.27%. 【Conclusion】 The introduction of FeOOH can greatly improve the adsorption performance of biomass carbon for fluoride ions mainly by means of multi-layer adsorption and chemical adsorption.

Key words: fluorine, Rosa roxburghii residue, biochar, FeOOH, dynamics

中图分类号:

X703

曾维, 朱健, 郭兴强, 尹辉. 负载FeOOH刺梨渣生物质炭对水中氟的吸附效果[J]. 四川农业大学学报, 2023, 41(4): 690-697.

ZENG Wei, ZHU Jian, GUO Xingqiang, YIN Hui. Adsorption Effect of FeOOH Loaded Rosa roxburghii Residue Biomass Carbon on Fluorine (F^-) in Water[J]. Journal of Sichuan Agricultural University, 2023, 41(4): 690-697.

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