CTMAB/SDS/Graphene combined modified bentonite(CSGMB) was prepared by using hexadecyl trimethyl ammonium bromide(CTMAB), sodium dodecyl sulfonate(SDS) and graphene as modifier together. The modifying process was conducted by microwave irradiation. The adsorption of the combined modified bentonite on phenol was investigated and the structure was characterized by XRD, SEM, N2adsorption-desorption. The results showed that, the removal rate of CSGMB on phenol could reach 79.1%, when the initial phenol mass concentration was 50 mg/L, the pH value was 3, the adsorption time was 120 min, and the dosage was 2 g/L. The combined modified bentonite could effectively be recycled four times by using 1.5 mol/L NaOH solution, the removal rate after regeneration were 53.88%. Graphene and organobentonite composite uniformly and the pore structure was better than that of bentonite. The basal spacing had increased from 1.287 nm to 1.578 nm and the surface area had increased to 32.998 m2/g.%在微波条件下,采用十六烷基三甲基溴化铵(CTMAB)、十二烷基磺酸钠(SDS)、石墨烯为改性剂,制备CTMAB/SDS/石墨烯复合改性膨润土(CSGMB),研究了改性膨润土对苯酚废水的吸附效果,并通过XRD、SEM、N2吸附-脱附等手段进行了表征.结果表明,苯酚模拟废水初始质量浓度50 mg/L,pH值为3,吸附剂用量2 g/L,吸附时间120 min时,溶液中苯酚的去除率可达79.1%;利用1.5 mol/L NaOH溶液对复合改性膨润土解吸再生,4次再生后对苯酚的去除率为53.88%.复合改性膨润土孔隙结构优于原土,层间距由1.287 nm增大至1.578 nm,比表面积增大至32.998 m2/g.
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