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凹凸棒石粘土原矿经添加分散剂的机械搅拌、超声波处理、离心处理后得到提纯,提纯后样品被制备成纳米颗粒,利用十六烷基三甲基溴化铵对凹凸棒石粘土进行改性.测定了改性凹凸棒石的膨胀倍、ζ-电位,利用红外光谱和透射电镜进行了表征.结果表明,经过以上处理,有机改性剂与凹凸棒石发生作用,其性质和形貌都发生了变化:凹凸棒石疏水性增强,ζ-电位正值增大,有机凹凸棒石纳米微粒的长度为70～100nm,宽度为40～60nm,分散良好.利用改性凹凸棒石对造纸废水进行处理,当投加量为5g/L时,COD和色度去除率分别为86.7%和93.5%.
Attapulgite clay ore by adding dispersant mechanical stirring, ultrasonic treatment, after centrifugation to be purified, the purified sample was prepared into nano-particles, the use of cetyltrimethylammonium bromide modified attapulgite clay The swelling times and zeta potentials of the modified attapulgite were measured and characterized by IR and TEM.The results showed that the organic modifier and the attapulgite both had the same properties and morphology The results showed that the hydrophobicity of attapulgite increased and the positive value of ζ-potential increased, the length of organic attapulgite nanoparticles was 70 ~ 100nm and the width was 40 ~ 60nm, the dispersion was good.Using the modified attapulgite for papermaking wastewater When the dosage was 5g / L, COD and color removal rates were 86.7% and 93.5% respectively.