scholarly journals Iron removal in highly contaminated acid mine drainage using passive biochemical reactors

2017 ◽  
Vol 76 (7) ◽  
pp. 1833-1843 ◽  
Author(s):  
Thomas Genty ◽  
Bruno Bussière ◽  
Mostafa Benzaazoua ◽  
Carmen M. Neculita ◽  
Gérald J. Zagury
Keyword(s):  
Acid Mine Drainage ◽  
Municipal Wastewater ◽  
Mine Drainage ◽  
Wastewater Sludge ◽  
Dissolved Metals ◽  
Retention Capacity ◽  
Acid Mine ◽  
Batch Type ◽  
Batch Tests ◽  
Biochemical Reactors

Passive biochemical reactors (PBRs) are a viable alternative to neutralization plants for the treatment of acid mine drainage (AMD) because they require lower investment costs and use residual materials. However, high iron (Fe) concentrations (≥0.5 g/L) in AMD are challenging for their long-term efficiency. Sorption and precipitation are the main Fe removal mechanisms, but the relative importance of each is mostly unknown. In this study, locally available natural materials (organic and inorganic) were characterized and tested for their performance in Fe removal from highly contaminated AMD (pH 3.5, 4 g/L of Fe, and 9 g/L of sulfate). Iron retention capacity of the materials was then evaluated and the efficiency of eight mixtures of materials was compared through 40-day laboratory batch tests. All batch-type PBRs increased the pH up to 6.5 and decreased dissolved metals concentrations, including Fe, up to 99%. Results showed that organic residual materials (manures, municipal wastewater sludge, and compost) were the best substrates for Fe removal.These findings allowed for the selection of three reactive mixtures with distinct characteristics (mixture #1 – 30% organic wastes; mixture #4 – 50% calcite; and mixture #7 – 50% sand) to be further evaluated in column type PBRs.

scholarly journals Feasibility of Co-Treating Olive Mill Wastewater and Acid Mine Drainage

2020 ◽  
Vol 39 (4) ◽  
pp. 859-880
Author(s):  
Jorge Dias Carlier ◽  
Ana Teresa Luís ◽  
Luís Miguel Alexandre ◽  
Maria Clara Costa
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Olive Mill Wastewater ◽  
Bacterial Populations ◽  
Limit Values ◽  
Acid Mine ◽  
Batch Tests ◽  
Successful Removal ◽  
Irrigation Waters ◽  
Olive Mill

Abstract Previous tests using a growth medium and olive mill wastewater (OMWW) have shown that it supplies carbon and electron donors suitable for sulphate reducing bacteria (SRB). We assessed the co-treatment of acid mine drainage (AMD) and OMWW using SRB-enriched bioreactors and identified the most abundant bacterial populations present under optimized conditions. The process requires a neutralizing agent to create optimal pH conditions for successful removal of the AMD’s main contaminants. Concentrations of SO42−, Al, Fe, Cu, Zn, and Mn decreased to below Portugal’s maximum admissible values for irrigation waters, and all but Mn were reduced to less than Portugal’s emission limit values (ELVs) for wastewater discharges. Phenol concentrations—the main pollutants in OMWW—dropped to values between 1/10 and 1/5 their initial concentrations in batch tests using mixtures of AMD and OMWW, and to 1/2 their initial concentrations in flow-through tests. The final total phenol concentrations were still above the ELV for wastewater discharges, but phenols are not regulated in irrigation waters, and OMWW is used by some producers to irrigate soils. Six main SRB groups were identified as likely having a fundamental role in the bioremediation process: the genera Desulfovibrio, Sulfurospirillum, and Acetobacter and the families Sphingomonadaceae, Prevotellaceae, and Deferribacteraceae.

Changes in Efficiency and Hydraulic Parameters During the Passive Treatment of Ferriferous Acid Mine Drainage in Biochemical Reactors

2018 ◽  
Vol 37 (4) ◽  
pp. 686-695 ◽  
Author(s):  
Thomas Genty ◽  
Bruno Bussière ◽  
Mostafa Benzaazoua ◽  
Carmen M. Neculita ◽  
Gérald J. Zagury
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Passive Treatment ◽  
Hydraulic Parameters ◽  
Acid Mine ◽  
Biochemical Reactors

A Review of Technologies Used in Handling The Acid Mine Drainage Challenge: Perspectives on Using Green Liquor Dregs As a Sustainable Option For Treatment of Acid Mine Drainage

2021 ◽  
Vol 47 (1) ◽  
pp. 1-18
Author(s):  
Keolebogile R. Sebogodi ◽  
Jonas K. Johakimu ◽  
B. Bruce Sithole
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Current Trend ◽  
Dissolved Metals ◽  
Green Liquor ◽  
Acid Mine ◽  
Treatment And Prevention ◽  
Green Liquor Dregs ◽  
High Concentrations ◽  
By Products

Acid mine drainage (AMD) is one of the repercussions that result from earth-moving activities around the sulfide-bearing mineral hosts. The detrimental effects associated with this AMD are driven by its characteristics, which include low pH and high concentrations of sulfate and toxic dissolved metals. Traditionally, the prevention and treatment of AMD are achieved by using technologies that use, amongst other, naturally occurring soils and carbonates. However, the continual use of these materials may eventually lead to their depletion. On the other hand, industrial by-products have been proven to occupying land that could have otherwise been used for profitable businesses. Additionally, the handling and maintenance of landfills are costly. In this current trend of a circular economy that is driven by industrial symbiosis, scientists are concerned with valorizing industrial by-products. One such by-product is the green liquor dregs (GLD) from Kraft mills. The neutralizing and geotechnical properties of these wastes have prompted the research pioneers to seek their potential use in handling the challenges associated with AMD. In this review, the formation AMD, trends in technologies for treatment and prevention of AMD are critically analyzed. This includes the feasibility of using GLD as an alternative, promising sustainable material.

Novel Passive Co-Treatment of Acid Mine Drainage and Municipal Wastewater

2011 ◽  
Vol 40 (1) ◽  
pp. 206-213 ◽  
Author(s):  
William H. J. Strosnider ◽  
Brandon K. Winfrey ◽  
Robert W. Nairn
Keyword(s):  
Acid Mine Drainage ◽  
Municipal Wastewater ◽  
Mine Drainage ◽  
Acid Mine

scholarly journals Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia)

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 16 ◽  
Author(s):  
Nela Petronijević ◽  
Srđan Stanković ◽  
Dragana Radovanović ◽  
Miroslav Sokić ◽  
Branislav Marković ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Lake Water ◽  
Municipal Wastewater ◽  
Mine Drainage ◽  
Mining Waste ◽  
Acidic Lake ◽  
Flotation Tailings ◽  
Acid Mine ◽  
Alternative Material ◽  
The Republic

Flotation tailings rich in carbonate minerals from the tailings deposit of the copper mine Majdanpek (Serbia) were applied for neutralization of the water taken from the extremely acidic Lake Robule (Bor, Serbia). Tests conducted in Erlenmeyer flasks showed that after neutralization of the lake water to pH 7, over 99% of aluminum (Al), iron (Fe), and copper (Cu) precipitated, as well as 92% of Zn and 98% of Pb. In order to remove residual Mn and Ag, the water was further treated with NaOH. After treatment with NaOH, all concentrations of the metals in the lake water samples were below discharge limits for municipal wastewater according to the national legislation of the Republic of Serbia. The results of this work suggest that mining waste could be used for active neutralization of the acid mine drainage. The use of the mining waste instead of lime could reduce the costs of the active treatment of the acid mine drainage.

Industrial acid mine drainage and municipal wastewater co-treatment by dual-chamber microbial fuel cells

2020 ◽  
Vol 45 (26) ◽  
pp. 13757-13766 ◽  
Author(s):  
L.S. Vélez-Pérez ◽  
J. Ramirez-Nava ◽  
G. Hernández-Flores ◽  
O. Talavera-Mendoza ◽  
C. Escamilla-Alvarado ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Acid Mine Drainage ◽  
Microbial Fuel Cells ◽  
Municipal Wastewater ◽  
Mine Drainage ◽  
Dual Chamber ◽  
Acid Mine
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