活性炭对邻苯二甲酸二丁酯的吸附及影响因素研究

A Study on Adsorbing Di-n-butyl Phthalate by Activated Carbon and Its Influence Factors

采用粉末活性炭（PAC）作为吸附剂,去除水体中低浓度邻苯二甲酸二丁酯（DBP）,以研究影响PAC去除DBP效果的要素。实验结果显示,PAC对DBP吸附的最佳条件为：PAC投加量20mg/L,作用时间1 h,最适pH为7,DBP初始浓度4mg/L,添加适量NaCl（0.3mg/L-0.5mg/L）。在最适条件下,PAC对水体中DBP吸附60min的去除率最高可达95.9%。由此可见,PAC的吸附作用用于处理水体低浓度DBP具有可行性,该方法对治理环境中DBP污染有一定的应用前景。

Taking powdered activated carbon （PAC） as an adsorbent, key factors affecting its removal of dibutyl phthalate （DBP） at low concentration in water were studied. It has shown that the removal of DBP adsorbed by PAC could be up to 95.9 % under the conditions of PAC dose at 20 mg/L, reaction duration in one hour, pH value at 7, initial concentration of DBP at 4 mg/L, and appropriate addition of sodium chloride in range of 0.3 - 0.5 mg/L. It indicated that the adsorption of PAC could be feasible to treat low concentration of DBP, and would certainly be applicable to deal with DBP pollution in the environment.