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摘要
为了研究高温改性糖滤泥对亚甲基蓝的吸附性能,采用静态吸附法进行模拟废水的吸附实验,考察了亚甲基蓝不同初始浓度、吸附时间、吸附剂投加量及温度对脱色率的影响,确定了最佳吸附脱色条件,并用伪一级、伪二级动力学方程模拟改性糖滤泥吸附亚甲基蓝的动力学行为。结果表明,当吸附时间为120min,吸附剂投加量为0.18g,温度为303K时,废水脱色率最高达97.77%;伪二级动力学方程机理更适合解释高温改性糖滤泥对亚甲基蓝吸附的现象;傅里叶红外光谱分析表明,高温改性糖滤泥吸附亚甲基蓝存在化学吸附。所以,高温改性糖滤泥吸附亚甲基蓝是可行的。
Abstract
In order to study the adsorption properties of the sugar filter mud modified at high temperature for methylene blue,the adsorption experiment simulated wastewater by the static adsorption method,inspected the influence of the different initial concentration of methylene blue,adsorption time,adsorbent dosing quantity,and temperature on the decoloring rate,and determined the optimum conditions of adsorption decolorizing.Pseudo first-order and pseudo secondary dynamics equation was used to simulate modified sugar filter mud dynamics behavior of adsorption of methylene blue.When the adsorption time was 120min,the dosage of adsorbent was 0.18g and the temperature was 303K,the decolorization rate of wastewater was up to 97.77%.The mechanism of pseudo second order kinetic equation was more suitable to explain the adsorption of methylene blue by modified sugar filter mud.Fourier infrared spectroscopy analysis of modified sugar filter mud adsorbing methylene blue presented chemical adsorption.It was feasible to adsorb methylene blue by high temperature modified sugar filter mud.
关键词
糖厂滤泥
/
改性
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吸附
/
亚甲基蓝
/
动力学
Key words
sugar mill sludge
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modification
/
adsorption
/
methylene blue
/
kinetics
高温改性糖滤泥吸附亚甲基蓝的研究[J].
化工新型材料, 2019, 47(12): 270-273 DOI:
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基金资助
广西科学研究与技术开发项目(桂科能1598025-15)
