【摘要】 研究了十六烷基三甲基溴化铵(CTAB)改性沸石对酸性橙Ⅱ的吸附特性.考察了改性沸石投加量、吸附时间、温度、p H值、初始浓度、离子强度等因素对改性沸石吸附水中酸性橙Ⅱ的影响.结果表明:酸性橙Ⅱ初始浓度为10mg/L时CTAB改性沸石的最佳投加量为3 g/L,吸附平衡时间为30 min,平衡吸附量是改性前的近20倍;CTAB改性沸石对酸性橙Ⅱ的吸附等温线更符合Langmuir方程;CTAB改性沸石对酸性橙Ⅱ的吸附动力学可以用准二级动力学方程描述.更多还原

【Abstract】 The adsorption characteristics of Acid Orange II onto sixteen alkyl three methyl bromide(CTAB)modified zeolite were studied. Experiments were carried out as function of adsorbent dosage,contact time,temperature,p H,initial dye concentration and ionic strength. The results showed that when the initial concentration of Acid Orange II was 10 mg/L,the optimal CTAB modified zeolite dosage was 3 g/L,the adsorption equilibrium time was 30 min,and the equilibrium adsorption capacity is nearly 20 times before modification. The adsorption isotherm of Acid Orange II on CTAB modified zeolite is more in line with the Langmuir equation,the adsorption kinetics of Acid Orange II on CTAB modified zeolite can be described by pseudo-second-order kinetics equationr.更多还原