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采用湿法工艺用猪粪降解液对沸石、膨润土进行有机改性,通过单因素法分别改变猪粪降解液的加入量、体系pH值、反应温度和反应时间4个因素,研究其对水样中Cu~(2+)吸附性能的影响。结果表明,当猪粪与钙基膨润土的质量比为1:1,pH值为9.0,反应温度为60℃,搅拌反应时间为2.5 h时,制备的改性膨润土对160 mg·L~(-1)的Cu~(2+)水样中Cu~(2+)的去除率达91.29%;当猪粪与沸石的质量比为1:2,pH值为7.0,反应温度为60℃,搅拌反应时间为2.0 h时,制备的改性沸石对160 mg·L~(-1)的Cu~(2+)水样中Cu~(2+)的去除率达92.01%;在最佳制备条件下,改性沸石与改性膨润土对Cu~(2+)的去除率相差不大。
The wet process was used to hydrolyze zeolite and bentonite by pig manure degradation solution. The factors such as the amount of pig manure degradation liquid, pH value, reaction temperature and reaction time were changed by single factor method respectively. In the Cu ~ (2+) adsorption properties. The results showed that when the mass ratio of pig manure to calcium bentonite was 1: 1, the pH was 9.0, the reaction temperature was 60 ℃ and the reaction time was 2.5 h, the modified bentonite had a good effect on 160 mg · L ~ (-1) 1), the removal rate of Cu 2+ in Cu 2+ sample was 91.29%. When the mass ratio of pig manure and zeolite was 1: 2, the pH value was 7.0, the reaction temperature was 60 ℃, When the reaction time was 2.0 h, the removal rate of Cu 2+ in the 160 mg · L -1 Cu 2+ sample was 92.01%. The optimal preparation conditions , The removal rate of Cu ~ (2+) by modified zeolite and modified bentonite is almost the same.