• 关键词：四溴双酚A  煤胶体  吸附-分配模型  表面吸附  分配作用

• 基金项目：国家自然科学基金（No.41373125）；辽宁工程技术大学生产技术问题创新研究基金（No.20160005T）

• 薛杨
• 辽宁工程技术大学, 阜新 123000

• 许端平
• 辽宁工程技术大学, 阜新 123000

• 李佳慧
• 辽宁工程技术大学, 阜新 123000

• 邱素芬
• 辽宁工程技术大学, 阜新 123000

• 王宇
• 辽宁工程技术大学, 阜新 123000

• 摘要：以采自内蒙古霍林河煤矿的煤样为研究对象,通过模拟实验研究了四溴双酚A在煤胶体上的吸附行为,重点探讨了温度、pH值和离子强度对四溴双酚A在煤胶体上表面吸附和分配作用的影响.结果表明：煤胶体对四溴双酚A的吸附过程可由Freundlich表面吸附-分配复合模型很好地描述.随着温度的升高,四溴双酚A在煤胶体上吸附的分配作用和表面吸附同样都有所下降,但温度的升高对分配作用的影响程度较大.pH值主要影响四溴双酚A在煤胶体上的分配作用,在pH值为9时,四溴双酚A在煤胶体上的吸附以表面吸附为主,其对总吸附量的贡献率为97.5%；而在pH值为6~8时,则以分配作用为主,其对总吸附量的贡献率为64.0%~78.9%.Ca²⁺浓度为0.001~0.1 mol·L^-1时,离子强度对于四溴双酚A在煤胶体上的表面吸附和分配作用均影响较小.

• Abstract：Coal samples were collected from Huolinhe coal mining group in Inner Mongolia, China, and the colloid was extracted from the sample using centrifugation and sedimentation process. Experiments have been carried out to study the sorption of tetrabromobisphenol A on colloids from coals. Effects of pH, ionic strength and temperature on adsorption and partition of tetrabromobisphenol A have been investigated. The sorption isotherm of Tetrabromobisphenol A on colloid from coal was discussed using two kinds of the dual adsorption-partition models. the results indicate that the experimental data fit the freundlich adsorption-partition model well. The sorption capacities of adsorption and partition have a decreasing trend with the increase of temperature. But effect of temperature on the partition was greater than on the adsorption. At pH 9, the adsorption is predominant in the sorption of tetrabromobisphenol A, accounting for 97.5% of the sorption. When pH≤8, the partition is predominant, which accounts for 64.0%~78.9% of the sorption. When Ca²⁺ ranged in 0.001~0.1 mol·L^-1, adsorption and partition of tetrabromobisphenol A on colloids from coals have little effect from ionic strength.

• Key words：tetrabromobisphenol A  colloids from coal  dual adsorption-partition model  sorption  partition

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