染整技术2024，Vol.46Issue(11)：27-33,7.
稻秆基生物炭对亚甲基蓝的吸附性能
Adsorption property of rice straw-based biochar for methylene blue
刘少东 1余茂森 1郭敏1
作者信息
- 1. 九江学院化学化工学院,江西 九江 332005||江西省生态化工工程技术研究中心,江西 九江 332005
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摘要
Abstract
The ability of rice straw-based biochar as an adsorption material to remove organic dyes pollutants in aqueous solution was researched.Rice straw(20～40 mesh)was pyrolyzed in a fixed bed.When the final pyrolysis tempera-ture was 600℃,the heating rate was 10℃/min,and the pyrolysis reaction time was 90 min,the rice straw-based biochar was obtained.The adsorption properties of methylene blue(MB)which was the adsorbate was studied.Under the conditions of MB mass concentration of 30 mg/L and RSBC dosage of 1.0 g/L,when adsorption reaches equilibrium,the removal rate of MB by RSBC can reach 93.25%.The adsorption process is in accordance with the pseudo second order kinetic model and the Freundlich isothermal adsorption model,with the maximum adsorption amount of 28.38 mg/g.Compared with com-mercial activated carbon,RSBC can remove 93.25%of MB under the same conditions,while coal-based commercial acti-vated carbon is only 40.74%.Biochar,a kind of solid product,can be obtained by thermochemical conversion of agricultur-al waste rice straw.This porous carbon material has the potential to be used as a high efficiency adsorbent to remove meth-ylene blue pollutants from wastewater,which can be used in the environmental field.关键词
生物炭/稻秆/亚甲基蓝/吸附Key words
biochar/rice straw/methylene blue/adsorption分类
环境科学引用本文复制引用
刘少东,余茂森,郭敏..稻秆基生物炭对亚甲基蓝的吸附性能[J].染整技术,2024,46(11):27-33,7.
