ABSTRACT Wastewater treatment is a challenging problem faced by the mining industry, especially when mine effluents include acid mine drainage with elevated arsenic levels. Iron (hydr)oxides are known to be effective in removal of As from wastewater, and although the resulting compounds are relatively unstable, the presence of structural Al enhances their stability, particularly under reducing conditions. The purpose of this study was to assess the effectiveness of Al-Fe (hydr)oxide co-precipitates for the removal of As from wastewater and to […]

ABSTRACT Studies on the survival of pathogenic microorganisms in the soil after use of wastewater for fertilization of agricultural crops report the effects of moisture, pH, organic matter, and soil temperature on microorganisms. There are few studies that assess the survival of these microorganisms in the rhizosphere of plants fertilized with wastewater. Thus, the aim of this study was to quantify the number of fecal coliforms and rhizobacteria (fluorescent Pseudomonas spp., Bacillus spp,) in the rhizosphere of winter and summer […]

A utilização de efluentes industriais tratados na irrigação do arroz por alagamento pode provocar alterações eletroquímicas e aumentar o teor de nutrientes na solução do solo. Para testar essa hipótese, este trabalho teve por objetivo avaliar a dinâmica dos atributos químicos e eletroquímicos da solução do solo sob cultivo de arroz irrigado com lixiviado industrial tratado, contendo 820 mg L-1 de Na. O experimento foi conduzido em casa de vegetação, utilizando-se como unidades experimentais vasos preenchidos com 20 kg de […]