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摘要
在对Cr3+离子和亚甲基蓝模拟的工业废水分别进行单因素研究的基础上,采用振荡吸附法对低浓度Cr3+离子和亚甲基蓝混合废水进行了吸附研究。结果表明,利用粉煤灰制备的MCM-41和Al-MCM-41介孔分子筛对混合废水有良好的吸附效果,Al-MCM-41介孔分子筛对混合废水中Cr3+离子和亚甲基蓝吸附率达83.00%和99.27%,饱和吸附量分别为1.544,2.639mg/g,等温吸附平衡均符合Langmuir吸附等温模型。
Abstract
The single-factor adsorption of mixed waste water with Cr3+ and methylene blue was studied by means of oscillating adsorption.The results showed that MCM-41 and Al-MCM-41 mesoporous molecular sieves prepared from fly ash had better adsorption effect on the mixed waste water.The adsorption removal rate of Cr3+ and methylene blue in the mixed waste water reached 83.00% and 99.27%,respectively.The saturated adsorption capacities were 1.544mg/g and 2.639mg/g which all met the Langmuir adsorption isotherm model.
关键词
粉煤灰
/
低浓度废水
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介孔分子筛
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吸附
Key words
fly ash
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low concentration waste water
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mesoporous molecular sieve
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adsorption
粉煤灰制备介孔分子筛及其应用研究[J].
化工新型材料, 2018, 46(11): 269-273 DOI:
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[2] 靳昕,王英滨,林智辉.MCM-41中孔分子筛净化含Cr(Ⅵ)废水的实验研究[J].离子交换与吸附,2006,22(6):536-543.
[3] 靳琳.由粉煤灰制备介孔分子筛及其对有机废水的处理研究[D].北京:北京化工大学,2016.
[4] 张家栋,祖运,秦玉才,等.Al改性MCM-41选择性吸附脱硫机制的研究[J].石油炼制与化工,2017,48(8):51-57.
[5] 王云芳,步长娟,迟志明,等.Al-MCM-41介孔分子筛吸附喹啉的性能[J].化工学报,2015,66(9):3597-3604.
基金资助
陕西省科技攻关项目(2017GY-178);陕西省教育厅教改项目(17BY127);陕西省教育厅专项科研计划项目(16JK2090),西安建筑科技大学华清学院重点教改项目(JG1701)
