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Active potassium niobates and titanoniobates as catalysts for organic sulfide remediation
(Elsevier Science, 2016-02)
Pure (KNbO3) and titanium-substituted (KTi0.1Nb0.9O3 and KTi0.2Nb0.8O3) potassium niobates with perovskite crystalline structures were prepared, characterized and tested as catalysts in the selective oxidation of ...
Study of Generation and Underground Flow of Acid Mine Drainage in Waste Rock Pile in an Uranium Mine Using Electrical Resistivity Tomography
(2020-02-01)
Mineral exploration is often associated with the generation of environmental liabilities, whose potential damages might imperil local water quality. An example of these environmental impacts is the acid mine drainage—AMD, ...
Synthesis of copper sulfide nanoparticles using biogenic H2S produced by a low-pH sulfidogenic bioreactor
(2018-02)
The application of acidophilic sulfate-reducing bacteria (SRB) for the treatment of acidic mine water has been recently developed to integrate mine water remediation and selective biomineralization. The use of biogenic ...
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP)
(2019-01-01)
In São Paulo State, there are hundreds of contaminated areas due to leakage of hydrocarbons in gas stations, industry or transportation. Chemical compounds transportation is a high-risk activity in function of the ...
Control of geochemical mobility of arsenic by liming in materials subjected to acid mine drainage
(Ecomed PublishersLandsbergAlemanha, 2008)
Recent Developments for Remediating Acidic Mine Waters Using Sulfidogenic Bacteria
(2017)
Acidic mine drainage (AMD) is regarded as a pollutant and considered as potential source of valuable metals. With diminishing metal resources and ever-increasing demand on industry, recovering AMD metals is a sustainable ...
Avaliação ecotoxicológica da adição de nitrato em sedimentos eutrofizados da Represa Ibirité (Betim MG): experimentos em microcosmos
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ecologia e Recursos Naturais - PPGERN, 2009-05-15)
The objective of the present dissertation was to make a toxicity assessment of the application of calcium nitrate solution as a remediation procedure for sediments of a
eutrophic aquatic ecosystem. The study was carried ...
Calcium nitrate addition to control the internal load of phosphorus from sediments of a tropical eutrophic reservoir: Microcosm experiments
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
The main objective of this study was to perform laboratory experiments on calcium nitrate addition to sediments of a tropical eutrophic urban reservoir (Ibirite reservoir, SE Brazil) to immobilize the reactive soluble ...
Analytical Method for the Determination of Surfactants with Fluorescent Activity, Present in Liquid Effluents from Textile Industries, by HPLC-Fluorescence
(Science Domain International, 2017-01)
In textile industries effluents we can be found surfactants of various characteristics, alkalis, and sulfides partially or totally hydrolyzed dyes, among other things, which are used as dyeing material. This study aims to ...