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《Journal of Lanzhou University of Technology》 2009-06
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Adsorptive performance of modified palygorskite clay for removal of sulphide in waste water

ZHAO Qiu-ping,ZHANG Fei-long,LI Lan,WANG Yan-bin,WANG Qing-ning(College of Petrochemical Technology,Lanzhou Univ.of Tech.,Lanzhou 730050,China)  
Adsorptive performance of modified palygorskite clay was investigated for removal of sulphide in waste water.It was verified by experiments that adding MnO2 as active component made the adsorptive effect better,and the best saturation adsorption time was 240 min.Optimal condition of palygorskite clay processing was as follows: 11% sulfuric acid,addition of active component MnO2-30%,roasting temperature-200 ℃ for baking 5 h.As a result,the removal rate of sulphide in waste water with this adsorbent was 75.44%.Modified adsorbent was prepared by using the palygorskite clay produced in both the area of Huiming and Linze,and compared with activated carbon.The result showed that the absorptive rate of the former was a little bit higher than that of the latter.
【Fund】: 甘肃省攻关项目(2GSO47-A52-001-05)
【CateGory Index】: X703
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