Preparation of Adsorbents Made from Sewage Sludges and Their Application
Taking biochemical sludges of sewage and petrochemistry and surplus sludge as raw materials to prepare carbon-bearing adsorbents, and contrasting different activating methods and the effects of different activators. The results indicate that the carbon-bearing adsorbents made by chemical activation prove better with the optimum activator being complex of ZnCl2 and H2SO4. Moreover, the optimum preparation conditions are concentration of two activators 5mol/L (the ratio of ZnCl2 and H2SO4 is 2:1), at the activating temperature of 550℃, in the proportion of solid to liquid 1:2.5, in a period of 2h. Contrasting the commodity of pellet carbon, the carbon-bearing adsorbents were characterized by BET. By application of those adsorbents to treatment of wastewater of urban, the removal rates of COD is taller than the active carbon.
Sewage sludge Carbon-bearing adsorbents microstructure porosity
Lan-Lan Yu Yuan-Ying Wang Kai Zheng Li-Jun Yuan Hong-Wei Yu
School of Chemistry and Chemical Engineering,Daqing Petroleum Institute,Daqing 163318 The No.2 Petroleum Production of Daqing Oil Field ChangYuan Software Limited Company of Daqing Oil Field
国际会议
The 3rd International Conference on Waste Management and Technology(第三届固体废物管理与技术国际研讨会)
北京
英文
393-398
2008-11-05（万方平台首次上网日期，不代表论文的发表时间）