Mobilidade de bário em solo tratado com sulfato de bário sob condição de oxidação e redução

Química Nova

Marcio Osvaldo Lima Magalhães¹  Nelson Moura Brasil Do Amaral Sobrinho¹  Everaldo Zonta¹  Leilane Da Silva Lima¹  Filipe Soares Diniz De Paiva¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro Instituto de Agronomia Departamento de SolosSeropédica RJ ,Brasil

关键词: soil contamination;    redox potential;    Ba;   

DOI  :  10.1590/S0100-40422011000900012

来源: SciELO

【 摘 要 】

In order to evaluate possible solubility of BaSO4 in soils under reducing conditions, column leaching assay was settled down, where the soil received three doses of BaSO4 (100, 300 and 3000 mg kg-1) at two humidities. After reaching an Eh of -200 mV rainfall of 200 mm per day-1 was simulated. The condition of reduction led to the increased levels of barium in the fractions of higher lability and the highest levels of barium in the leachate extract, which were above the potability standards. Only 0.05% of barium in the column that received the highest dose was removed by leaching.

【 授权许可】

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