一种改性柱撑蒙脱石的制备及其对废水中SO_4~(2-)吸附效率研究

蒙脱石具有较大的比表面积和阳离子交换容量,吸附性能较好。但其不能有效地吸附疏水性物质,应用中常将一些聚合羟基金属阳离子引入到蒙脱石层间制成柱撑蒙脱石以提高其孔道特性和热稳定性。为了进一步提高其吸附效率,在柱撑蒙脱石中加入了物料A,高温焙烧,对其进行了一系列的改性,并确定了改性条件,制备了一种新型的SO42-高效吸附剂,并应用于煤矿矿井废水的治理,改性后的吸附剂较柱撑蒙脱石对水中SO42-的吸附率提高了54.6%。最佳焙烧温度为800℃,焙烧时间为4 h,焙烧的最佳物料配比为1:4。

Study on the Preparation of a Modification Pillared Montmorillonite and the Absorption Efficiency to the SO_4~(2-) in Wastewater

Montmorillonite had good specific area and exchange capacity of cat ion.It s adsorption efficiency is very favorable.But It hardly used to adsorb the hydrophobic mineral.We made pillared montmorillonite with introduction aggregation hydroxyl metal cat ion.In order to improved the adsorption efficiency,the paper mixed material A into pillared montmorillonite and dead roasted them,modified.ascertained the modification conditions,prepared a high efficiency SO2-4 adsorption agent and applied in coal-mine draina...