Acid Mine Effluents
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Effectiveness of Arsenic Co-Precipitation with Fe-Al Hydroxides for Treatment of Contaminated Water
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 st
Rev. Bras. Ciênc. Solo. Publicado em: 29/03/2018
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2. ADSORPTION OF MANGANESE FROM ACID MINE DRAINAGE EFFLUENTS USING BONE CHAR: CONTINUOUS FIXED BED COLUMN AND BATCH DESORPTION STUDIES
AbstractIn the present study, continuous fixed bed column runs were carried out in an attempt to evaluate the feasibility of using bone char for the removal of manganese from acid mine drainage (AMD). Tests using a laboratory solution of pure manganese at typical concentration levels were also performed for comparison purposes. The following operating variab
Braz. J. Chem. Eng.. Publicado em: 2015-06
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3. Batch removal of manganese from acid mine drainage using bone char
The present study investigated batch kinetics and the batch equilibrium of manganese removal from acid mine drainage (AMD) using bone char as an adsorbent. Equilibrium tests revealed that the Langmuir-based maximum manganese uptake capacity was 22 mg g-1 for AMD effluents and 20 mg g-1 for laboratory solutions at a pH ranging from 5.5 to 5.7. The pseudo-seco
Braz. J. Chem. Eng.. Publicado em: 2014-03
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4. Caracterização limnológica e avaliação de efeitos ambientais causados por efluente de mina de urânio sobre populações microbianas planctônicas da represa das Antas, Caldas (M.G.). / Limnological characterization and evaluation of environmental effects caused by uranium mine effluents on planktonic microbial communitties in the Antas reservoir, Caldas (M.G.).
A bacia hidrográfica do Ribeirão das Antas inicia-se na represa das Antas, construída em 1982. A represa das Antas recebe os efluentes tratados da UTM (Unidade de Tratamento de Minério), procedentes de drenagens ácidas geradas em pilhas de rejeitos de urânio. Foi realizada a caracterização limnologica deste corpo aquático visando a determinar o impa
Publicado em: 2008
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5. Análise morfológica e molecular de cianobactérias isoladas de efluentes de uma mina de urânio desativada com ênfase em Aphanothece e sua capacidade de biossorção do 226Ra / Morphological and molecular analysis of cyanobacteria isolated from a deactivated uranium mine effuents with emphasis in Aphanothece and its 226Ra biosorption capacity
Cyanobacteria are oxygenic photosynthetic microorganisms with wide metabolic and structural plasticity, which have biotechnological potential for exploration in metals biosorption and organic pollutants biodegradation. Due to its strong interactions with cations and a reliable supply of cheap biomass, cyanobacteria may be a promising biosorbent candidate for
Publicado em: 2006
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6. Immobilization of Arsenite and Ferric Iron by Acidithiobacillus ferrooxidans and Its Relevance to Acid Mine Drainage
Weathering of the As-rich pyrite-rich tailings of the abandoned mining site of Carnoulès (southeastern France) results in the formation of acid waters heavily loaded with arsenic. Dissolved arsenic present in the seepage waters precipitates within a few meters from the bottom of the tailing dam in the presence of microorganisms. An Acidithiobacillus ferroox
American Society for Microbiology.