Utilização de solos locais para tratamento de efluentes do refino de petróleo contendo metais

Química Nova

Rafael Midugno²  Ari Roisenberg¹  Antonio Pedro Viero²  Eduardo Sanberg²  Nicolai Mirlean¹ 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Geociências Departamento de Mineralogia e PetrologiaPorto Alegre RS ,Brasil

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

DOI  :  10.1590/S0100-40422007000500030

来源: SciELO

【 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】

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