Adsorption of organic compounds using waste-derived layered double hydroxide and its application to waste water treatment

研究了以铝渣为原料合成的阴离子表面活性剂负载的层状双氢氧化物（LDH）对稀有机化合物的去除率。具体研究了LDH对十二烷基硫酸盐离子（DS-）、十二烷基苯磺酸盐离子（DBS-）和辛烷磺酸盐离子（OS-）的吸附行为。从一系列实验数据出发，考察了阴离子表面活性剂的离子大小和吸附量对LDH层间距离和接触角的影响。阐明了LDHs对6种有机化合物的去除能力。

In this study, the removal ability for dilute organic compounds was investigated for the anionic surfactant-supported layered double hydroxide (LDH), which is synthesized from aluminum dross. Concretely, the adsorption behavior of dodecyl sulfate ions (DS-), dodecyl benzene sulfonate ions (DBS-) and Octane sulfonate ions (OS-) were researched using the LDH. The effect of ion size and adsorption amount of anionic surfactants on the interlayer distance and contact angle of LDH were considered from a series of experimental data. The removal ability of the LDHs was clarified for 6 kinds of organic compounds.