Preparation and Performance Study of the Coagulant from Oil Shale Ash
The coagulant was prepared from oil shale ash. Its performance was evaluated by jar test in treating oily wastewater. It was also characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Infra-red spectra (FTIR). The results indicated that the characterization and coagulation performance of the samples were affected by the type of activator. Sodium hydroxide was better than oxalic acid. XRD results showed that the samples are not simple mixtures of raw materials but inorganic polymer compounds with iron, aluminum, silicon and other ions. The results of FTIR indicated that sodium hydroxide activator promoted the formation of Si-O-Fe and Si-O-Al bonds. The coagulant performance results illustrated that the coagulant dosage and the type of activator affected the removal of oil content in oily wastewater. When the activator was sodium hydroxide and the dose of the coagulant was 50 mg/L, the removal of oil content is 86%. The integrated analysis suggested that the entrapment, adsorption and complexation abilities played important roles in coagulation process although the charge neutralization was weak.
Tong SUN Xin ZHAO
Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou, 121013, PR China Engineering Research Center, Fushun Mining Group Co.Ltd., Fushun, 113008, PR China
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
565-568
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）