Chromium is a highly toxic non-essential metal for microorganisms and plants, and its
occurrence is rare in nature. Lower to higher chromium containing effluents and solid wastes …

Mine wastes pollute the environment with metals and metalloids in toxic concentrations,
causing problems for humans and wildlife. Microorganisms colonize and inhabit mine …

Chromite ore processing residue (COPR) is an industrial waste produced in the chromic
salts production process and contains a small portion of leached Cr (VI), which is highly toxic …

Results are presented from X-ray absorption spectroscopy based analysis of As, Cr, and V
speciation within samples of bauxite ore processing residue (red mud) collected from the …

In this work, a series of long-term treatment trials were conducted to evaluate the
remediation performance of amorphous iron pyrite (FeS 2 (am)) toward hexavalent …

Chromium (Cr) compounds are usually toxins and exist abundantly in two different forms, Cr
(VI) and Cr (III), in nature. Their contamination in any environment is a major problem. Many …

Purpose Floodplain soils are often contaminated with toxic elements such as Ba, Cr, Sr, and
V. For an adequate risk assessment of such contaminated sites, the assessment of factors …

Hexavalent chromium contamination of groundwater is a worldwide problem caused by
anthropogenic and natural processes. We report the rate of Cr (VI) removal by two humic …

The biochemical and molecular mechanisms used by alkaliphilic bacterial communities to
reduce metals in the environment are currently unknown. We demonstrate that an …

Highly reactive nano-scale biogenic magnetite (BnM), synthesized by the Fe (III)-reducing
bacterium Geobacter sulfurreducens, was tested for the potential to remediate alkaline Cr …