中文摘要：

研究了经十二烷基苯磺酸钠（SDBS）、曲拉通（TX-100）和十六烷基三甲基溴化铵（CTMAB）改性前后的沉积物（生物膜）吸附双酚A（BPA）的能力,并分析了CTMAB在沉积物（生物膜）吸附BPA过程中的增强机理及表面吸附和分配作用在总吸附中的贡献。研究结果表明,三种表面活性剂对沉积物（生物膜）吸附BPA的促进作用大小依次为：CTMAB〉TX-100〉SDBS,经CTMAB改性的沉积物（生物膜）对水中BPA的去除率最高可达44.14%（56.95%）。沉积物（生物膜）对BPA的吸附行为可利用吸附-分配复合模式描述（r均大于0.98）。在BPA平衡浓度为0.01~0.81 mg/L范围内,随着CTMAB浓度的增大沉积物（生物膜）吸附BPA的分配作用的贡献也呈增大趋势,与表观分配系数变化趋势一致,表面吸附贡献在总吸附过程中仍占主导地位（沉积物〉87.38%;生物膜〉66.32%）。

英文摘要：

Adsorption of bisphenol A（BPA） onto sediments（natural surface coatings）,which were modified by sodium dodecyl benzene sulfonate（SDBS）,TX-100 and cetyltrimethylammonium bromide（CTMAB）,was investigated,and the enhanced-control of CTMAB on BPA adsorption and relative contributions of surface adsorption and partition of BPA were also analyzed.Results showed that surfactants had promoted BPA adsorption to sediments（natural surface coatings） ranking as CTMAB,TX-100 and SDBS,and the removal efficiencies of BPA from adsorption solutions after modified by CTMAB was up to 44.14%（56.95%）.The isotherms of BPA to sediments could be fitted with dual adsorption-partition model.The partition of BPA into sediments（natural surface coatings） increased as the concentration of CTMAB increased within initial BPA levels of 0.01~0.81mg/L,in accordance with the trend of apparent sorption coefficients,but the adsorption still played a dominant role in the whole adsorption process,more than 87.38% for sediments and 66.32% for natural surface coatings.