2010全国生物材料大会论文集之 (994).pdf

Utilization of coal fly ash for remediation of metal
contaminated soil in mining sites

Chen Jiangjiang1, 2, Ouyang Tong1, Lai Limin1, Cao Wenzhi1
1)Department of Environmental Science and Technology 2)Environmental protection bureau of Quangang District
Xiamen University Environmental protection bureau of Quanzhou City
Xiamen 361005, . China Quanzhou 362802, P. R. China
******@xmu.


Abstract—By using a hydrothermal treatment process, coal fly investigating the optimum adsorption condition based on the
ash was transferred to a series of synthesized zeolites and batch test, lastly, using the column experiment to testify the
characterized XRD and SEM observations. The synthesized feasibility of ZFA to reduce the leaching of metal
zeolites exhibited more enhanced adsorption capacities for metals contaminants.
compared to the raw material as the increased CEC of the
synthesized zeolites apparently provides a better adsorptive
ability for metals. For the three synthesized zeolite amendments, II. MATERIALS AND MATHODS
ZFAⅠshows the best adsorption capacity for metals, followed by
A. Materials
ZFAⅡand ZFAⅢ. Soil amendment with coal fly ash and the
synthesized zeolites from the fly ash reduced the leaching of Cu, Immobilization tests were performed on a sample of
Zn, Ni, Cd, Cr, and Pb effectively from contaminated soils in polluted so