Employment of local soils for treatment of metal-bearing wastewater from petroleum refinement

Química Nova

Sanberg, Eduardo¹  Midugno, Rafael¹  Fundação Universidade Federal do Rio Grande, Rio Grande, Brasil¹  Mirlean, Nicolai¹  Roisenberg, Ari¹  Viero, Antonio Pedro¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil¹ 

关键词: retention test;    metal pollution;    wastewater treatment.;   

DOI  :  10.1590/S0100-40422007000500030

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The employment of local soils for extraction of metallic elements was evaluated through batch tests to treat wastewaters generated in a petroleum refinery plant in southern Brazil. Clay and organic carbon content and clay mineralogy provide these soils, in principle, with moderate metal retention capacity. The following retention order was established: Cr3+ > Pb2+ > Cu2+ > Hg2+ > Cd2+, with total amount of metals retained varying from 36 to 65 meq kg-1. The results show the high efficiency of local soils for extracting metals from liquid effluents through sorption and precipitation processes under acid pH conditions.

【 授权许可】

Unknown