Chitosan in the treatment of mine spoil rainwater - An approach to protect the aquatic biota.

The mining industry suppresses vegetation, exposing large soil areas in its ordinary operation. Water pollution and turbidity are caused by the carrying of solids, mainly colloidal particles, to the watercourses due to the effect of rainfall events. Therefore, the discharge of those effluents will lead to failure with watercourse quality parameters.

Arsenic contamination assessment in Brazil - Past, present and future concerns: A historical and critical review.

This paper presents a summary of some relevant documents published during the last decades regarding arsenic contamination in Brazil until December 2018, including scientific papers, reports and regulatory documents. Natural and anthropogenic arsenic sources were covered, excluding those related to agriculture. International "key" documents related to arsenic contamination were used to support the discussion and comparative analysis.

Data set on the bioprecipitation of sulfate and trivalent arsenic by acidophilic non-traditional sulfur reducing bacteria.

Data presented here are related to the original paper "Simultaneous removal of sulfate and arsenic using immobilized non-traditional sulfate reducing bacteria (SRB) mixed culture and alternative low-cost carbon sources" published by same authors (Matos et al., 2018) [1]. The data set here presented aims to facilitate this paper comprehension by giving readers some additional information.

Development of a biosorbent for arsenite: structural modeling based on X-ray spectroscopy.

This work describes a biological route for direct sorption of aqueous As(III) species, which are the most toxic and mobile arsenic species found in soils. Based upon the biochemical mechanisms that explain arsenic toxicity, we propose that a waste biomass with a high fibrous protein content obtained from chicken feathers can be used for selective As(III) adsorption. Prior to adsorption, the disulfide bridges present in the biomass are reduced by thioglycolate.