【摘要】 以A lC l3为改性剂研究了制备改性膨润土水处理吸附剂的条件,探讨了影响改性膨润土吸附去除苯酚效果的因素。结果表明:当A lC l3投量为25 g/100 g原土、焙烧温度为450℃时,所制得改性膨润土吸附剂的比表面积和微孔总体积分别为350.21 m2/g和0.907 cm3/g。采用该吸附剂处理苯酚废水(苯酚浓度为200 mg/L)的试验结果表明,在改性膨润土吸附剂投量为4 g/L、溶液的pH值为8.5、反应时间为30 m in的条件下,对苯酚的去除率达到了92.2%;对数据的回归分析显示,改性膨润土对苯酚的吸附符合Freund ish方程。更多还原

【Abstract】 The preparation condition for the integrated modified bentonite water treatment adsorbent was studied with AlCl₃ as the modifier.The influence factors of adsorbing phenol by modified bentonite were discussed.The experimental results indicate that the specific surface area and volume of the modified bentonite adsorbent are 350.21 m²/g and 0.907 cm³/g when the modifier AlCl₃ amount is 25 g/100 g bentonite and fritting temperature is 450 ℃.As using this adsorbent to treat phenol wastewater,the phenol removal rate achieves 92.2% when the phenol density in wastewater is 200 mg/L,dosage of modified bentonite is 4 g/L,solution pH value is 8.5,and reaction time is 30 min.The regression analysis shows that the phenol adsorption of modified bentonite conforms the Freundish equation.更多还原