银杏叶生物炭对亚甲基蓝的吸附特性
发布时间:2018-09-03 06:13
【摘要】:以银杏叶为原料,在700℃下热解制备银杏叶生物炭(GBBC),研究其对溶液中亚甲基蓝(MB)的吸附。考察了pH、吸附时间、GBBC投加量等对吸附结果的影响。实验结果表明:GBBC是一种很好的吸附剂,适用的pH范围宽(2~12),达到吸附平衡时间短(30min);在初始MB质量浓度为50mg/L、GBBC投加量为2.0g/L时,对溶液中MB的去除率达99.2%。吸附过程符合准一级动力学模型(R~2=0.982 9),颗粒内扩散模型拟合结果进一步表明GBBC对MB的吸附受表面吸附和颗粒内扩散共同主导。等温吸附模型拟合发现,Langmuir-Freundlich模型能很好地描述GBBC对MB的吸附行为(R~2=0.989 1)。可见,GBBC是一种去除废水中MB的高效吸附剂。
[Abstract]:The adsorption of methylene blue (MB) on ginkgo biloba leaves was studied by pyrolysis of ginkgo biloba leaves with biochar (GBBC), at 700 鈩,
本文编号:2219121
[Abstract]:The adsorption of methylene blue (MB) on ginkgo biloba leaves was studied by pyrolysis of ginkgo biloba leaves with biochar (GBBC), at 700 鈩,
本文编号:2219121
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