【摘要】 以麦壳为吸附剂,研究其对污水中阳离子表面活性剂溴化十六烷基三甲基铵(CTMAB)的吸附特性。考察了吸附剂用量、吸附时间、CTMAB初始浓度、溶液pH、吸附液盐度、温度等条件对吸附的影响。结果表明:随着麦壳用量的增加,吸附量逐渐减小;麦壳对CTMAB的吸附反应速率很快,40min即可达到吸附平衡;随着CTMAB初始浓度以及pH值的增加,吸附量均逐渐增大;随着Ca2+浓度的增大,吸附量逐渐减小;随着反应温度的升高,吸附量缓慢增大。麦壳对CTMAB的吸附符合Langmuir和Freundlich模型。更多还原

【Abstract】 Setting wheat shell as adsorbent,the adsorption characteristics of wheat shell to cetyl trimethyl ammonium bromide was studied.The influence factors of adsorbent dosage,adsorption time,initial concentration of CTMAB,the pH value,salinity and adsorption temperature on the adsorption were investigated.The experiment showed that:with the increase of the content of wheat shell,adsorption capacity was gradually decreased,The adsorption reacted quickly,which taked 40minutes to reach adsorption equilibrium,With the increase of the initial concentration of CTMAB and the pH value,adsorption capacity was increased gradually,With the concentration of Ca2 +increasing,adsorption capacity decreased gradually,With the reaction temperature rising,adsorption capacity increased gradually.Adsorption of cetyl trimethyl ammonium bromide on wheat shell was in accordanced with the isothermal adsorption equations of Langmuir and Freundlich.更多还原