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采用椰壳为生物质，通过化学浸渍法制备硼酸改性生物炭(BBC)。对BBC进行理化性质和表面性质分析，目标污染物为1,2-二氯乙烷(1,2-DCA),探究BBC反应条件对1,2-DCA的去除影响，深入研究吸附1,2-DCA的机理。结果表明，100 mg/L的1,2-DCA,温度为30℃,pH值为7,BBC的投加量为0.06 g/L,去除率为60.40%,吸附容量为92.93 mg/g, BBC对1,2-DCA吸附符合准二级动力学(PSO)和Langmuir模型。吸附机理包括表面吸附、孔隙填充和π-π相互作用。
Abstract：Boric acid modified biochar(BBC) was synthesized through a chemical impregnation method utilizing coconut shell as the biomass source.The physicochemical and surface properties of BBC were thoroughly analyzed, with 1,2-dichloroethane(1,2-DCA) identified as the target pollutant.This study aimed to investigate the influence of various reaction conditions on the removal efficiency of 1,2-DCA by BBC and to delve into the underlying adsorption mechanisms.The results indicated that under an initial concentration of 100 mg/L for 1,2-DCA at 30 ℃ and pH 7,with a dosage of BBC set at 0.06 g/L,the removal efficiency of 1,2-DCA was 60.40%,corresponding to an adsorption capacity of 92.93 mg/g.BBC adsorption of 1,2-DCA aligned well with both the PSO kinetic model and Langmuir model.The mechanism of 1,2-DCA adsorption by BBC encompassed surface adsorption, pore filling and π-π interactions.
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基本信息:
DOI：10.16581/j.cnki.issn1671-3206.20260728.003
中图分类号:TQ424;X523
引用信息:
[1]杨宗政,唐立娜,王浪,等.硼酸改性椰壳生物炭去除地下水中的1,2-二氯乙烷[J].应用化工,2026,55(07):1776-1781+1787.DOI:10.16581/j.cnki.issn1671-3206.20260728.003.
基金信息:
国家自然科学基金(42377038); 校企横向课题(2023120021000787)
2026-07-28
2026-07-28
2026-07-28