Barium mobilit in soil treated with barium sulfate under conditions of oxidation and reduction

Quimica nova

Magalhães, Marcio Osvaldo Lima¹  Zonta, Everaldo¹  Paiva, Filipe Soares Diniz de¹  Lima, Leilane da Silva¹  Sobrinho, Nelson Moura Brasil do Amaral¹ 

[1] Universidade Federal Rural do Rio de Janeiro, Seropédica, Brasil

关键词: soil contamination;    redox potential;    Ba.;   

DOI  :  10.1590/S0100-40422011000900012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

CC BY