Stabilization of zinc-contamined soil using zeolites synthesized from coal ashes

Química Nova

Instituto de Pesquisas Energéticas e Nucleares, São Paulo¹  Celebroni, Amanda Paccini¹  Flues, Marlene Sotto-Mayor¹  Fungaro, Denise Alves¹ 

关键词: zeolite;    stabilization;    contaminated soil.;   

DOI  :  10.1590/S0100-40422004000400012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The effect of synthetic zeolites on stabilizing Zn-contaminated soil using 0.01 mol L-1 CaCl2 leaching solution in batch experiments was investigated. The zeolites were synthesized from coal ash by hydrothermal treatment with alkaline solution. The additive enhanced the sorption capacity of the soil and reduced leaching. Zinc leaching was reduced by more than 80% using a minimum of 10% additive. The higher cation exchange capacity of the zeolite/soil mixtures and higher pH were responsible for stabilizing Zn in soil. The poly(2-aminobenzenesulfonic acid)-coated mercury thin-film electrode was used for the determination of zinc.

【 授权许可】

Unknown