Biological treatment removal of rare earth elements and yttrium (REY) and metals from actual acid mine drainage

2019 ◽  
Vol 80 (8) ◽  
pp. 1485-1493 ◽  
Author(s):  
E. W. Nogueira ◽  
F. M. Licona ◽  
L. A. G. Godoi ◽  
G. Brucha ◽  
M. H. R. Z. Damianovic
Keyword(s):  
Rare Earth ◽  
Acid Mine Drainage ◽  
Rare Earth Elements ◽  
Sulfate Reduction ◽  
Mine Drainage ◽  
Oxygen Demand ◽  
Flow Mode ◽  
High Concentration ◽  
Dissolved Metals ◽  
Acid Mine

Abstract Actual acid mine drainage (AMD) containing a high concentration of sulfate (∼1,000 mg·L−1), dissolved metals, uranium, rare earth elements and yttrium (REY) was treated using a down-flow fixed-structured bed biological reactor (DFSBR). The reactor was operated in a continuous flow mode for 175 days and the temperature was maintained at 30 °C. The synthetic AMD was gradually replaced by the actual AMD in 20, 50 and 75% of the total medium volume. Sugarcane vinasse was used as the electron donor and the influent pH of the reactor was decreased from 6.9 to 4.6 until the system collapsed. REY elements and transition metals were removed from the actual AMD and precipitated in the down-flow fixed-structured bed reactor. Sulfate reduction achieved 67 ± 22% in Phase II and chemical oxygen demand (COD) removal was above 56% in Phases I and II. Removal of La, Ce, Pr, Nd, Sm and Y was higher than 70% in both Phases II and III while Fe, Al, Si and Mn were removed with efficiencies of 79, 67, 48 and 25%, respectively. The results highlighted the potential use of DFSBR in the treatment of AMD, providing possibilities for simultaneous sulfate reduction and metal and REY recovery in a single unit.

scholarly journals Effect of acid mine drainage on dissolved rare earth elements geochemistry along a fluvial–estuarine system: the Tinto-Odiel Estuary (S.W. Spain)

2012 ◽  
Vol 43 (3) ◽  
pp. 262-274 ◽  
Author(s):  
J. Borrego ◽  
B. Carro ◽  
N. López-González ◽  
J. de la Rosa ◽  
J. A. Grande ◽  
...  
Keyword(s):  
Rare Earth ◽  
Acid Mine Drainage ◽  
Rare Earth Elements ◽  
Mine Drainage ◽  
Drainage System ◽  
Estuarine System ◽  
Mixing Zone ◽  
Heavy Rare Earth ◽  
Acid Mine ◽  
Heavy Rare Earth Elements

The concentration of rare earth elements together with Sc, Y, and U, as well as rare earth elements fractionation patterns, in the water of an affected acid mine drainage system were investigated. Significant dissolved concentrations of the studied elements were observed in the fluvial sector of this estuary system (Sc ∼ 31 μg L−1, Y ∼ 187 μg L−1, U ∼ 41 μg L−1, Σ rare earth elements ∼621 μg L−1), with pH values below 2.7. In the mixing zone of the estuary, concentrations are lower (Sc ∼ 2.1 μg L−1; Y ∼ 16.7 μg L−1; U ∼ 4.8 μg L−1; Σ rare earth elements ∼65.3 μg L−1) and show a strong longitudinal gradient. The largest rare earth elements removal occurs in the medium-chlorinity zone and it becomes extreme for heavy rare earth elements, as observed for Sc. Samples of the mixing zone show a North American Shale normalized pattern similar to the fluvial zone water, while the samples located in the zone with pH between 6.5 and 7.7 show a depletion of light rare earth elements relative to middle rare earth elements and heavy rare earth elements, similar to that observed in samples of the marine estuary.

Geochemical behaviour of rare earth elements (REE) along a river reach receiving inputs of acid mine drainage

2018 ◽  
Vol 493 ◽  
pp. 468-477 ◽  
Author(s):  
Manuel Olías ◽  
Carlos R. Cánovas ◽  
María Dolores Basallote ◽  
Alba Lozano
Keyword(s):  
Rare Earth ◽  
Acid Mine Drainage ◽  
Rare Earth Elements ◽  
Mine Drainage ◽  
Acid Mine ◽  
Geochemical Behaviour ◽  
River Reach

A novel approach for acid mine drainage pollution biomonitoring using rare earth elements bioaccumulated in the freshwater clam Corbicula fluminea

2017 ◽  
Vol 338 ◽  
pp. 466-471 ◽  
Author(s):  
Estefanía Bonnail ◽  
Rafael Pérez-López ◽  
Aguasanta M. Sarmiento ◽  
José Miguel Nieto ◽  
T. Ángel DelValls
Keyword(s):  
Rare Earth ◽  
Acid Mine Drainage ◽  
Rare Earth Elements ◽  
Mine Drainage ◽  
Corbicula Fluminea ◽  
Freshwater Clam ◽  
Acid Mine ◽  
Novel Approach ◽  
Clam Corbicula

Recovery of Rare Earth Elements and Yttrium from Passive-Remediation Systems of Acid Mine Drainage

2016 ◽  
Vol 50 (15) ◽  
pp. 8255-8262 ◽  
Author(s):  
Carlos Ayora ◽  
Francisco Macías ◽  
Ester Torres ◽  
Alba Lozano ◽  
Sergio Carrero ◽  
...  
Keyword(s):  
Rare Earth ◽  
Acid Mine Drainage ◽  
Rare Earth Elements ◽  
Mine Drainage ◽  
Acid Mine ◽  
Passive Remediation
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