选取工业废水中含量较高且比较常见的苯类物质和表面活性剂为吸附对象,研究用最优配方制备的聚苯胺/膨润土吸附材料(PAn/MMT)对苯类物质和表面活性剂的吸附性。当PAn/MMT用量为0.1g,苯酚、对硝基苯酚和邻甲酚的起始浓度均为10mg/L时,PAn/MMT对三者的吸附率分别达到51.50%、80.56%和62.93%,远高于同等条件下钠基膨润土的吸附率,说明改性后的膨润土更适合于苯类物质的吸附。对复配表面活性剂的亲水亲油平衡值(HLB)=6、8、10、12、14的表面活性剂体系,PAn/MMT的吸附率分别达到84.11%、74.22%、66.86%、62.88%和60.34%,且随着表面活性剂HLB的增加,最大吸附率和饱和吸附量都减少,说明改性后的膨润土更适合于亲油性表面活性剂的吸附。
Benzene homologs and surfactants whose contents are higher and more common in industrial and living waste water,was selected for adsorption object,and its adsorption of the polyaniline/bentonite (PAn/MMT) prepared by the optimal technology was studied.When the dosage of PAn/MMT was 0.1g and the initial concentration of phenol,P-nitrophenol,o-cresol was 10mg/L,their adsorption rates reach to 51.50%,80.56%,62.93%,respectively,which were more high than the sodium bentonite under the same conditinns.It indicated that the modified bentonite was more suitable for the adsorption of benzene homologs.When the surface activity agent system of HLB=6,8,10,12,14,its adsorption rate were 84.11%,74.22%,66.86%,62.88%,60.34%,respectively.Moreover,with the increase of the HLB of surfactant,the maximum adsorption rate and the saturated adsorption amount will be reduced,it shown that the modified bentonite was more suitable for hydrophilic surfactant adsorption.
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基金资助
国家自然科学基金(41807190)
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