reprocessing mine tailings to control acid rock drainage

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Permanent Sealing of Tunnels to retain Tailings or Acid ...

At-source control of acid mine drainage. International Journal of Mine Water, 9 (1-4), pp.85-96, 1990. [ Links ] [39] Brodie, G.A., Staged, aerobic constructed wetlands to treat acid drainage: Case history of Fabius Impoundment 1 and overview of the Tennessee Valley Authority's program. In Moshiri G.A., Constructed Wetlands for Water Quality ...

(PDF) Disposal, reprocessing and reuse options for acidic ...

reprocessing mine tailings to control acid rock drainage. The treatment of acidic mineral effluents, such as acidic drainage (AD), acid mine drainage (AMD), acid rock drainage (ARD) and process water, is commonly accomplished through lime neutralization.

Techniques to correct and prevent acid mine drainage: A review

Acid Potential Ratio (Calculation) – is the ratio of ANC/MPA and is used to classify material as either NAF or PAF (see definitions below). ARD Acid Rock Drainage – the use of this term indicate natural weathering and oxidation unmined outcrops of sulfide bearing materials. Kinetic Testing

Acid mine drainage remediation options: a review

Acid drainage control It is important to manage the placement of PAF material within the embankments to ensure that acid drainage is controlled both during the short term while the tailings storage facilities are being constructed, and in the long term.

Preventing acid mine drainage from mine tailings

Acid mine drainage remediation options: a review D. Barrie Johnson*, Kevin B. Hallberg School of Biological Sciences, University of Wales, Bangor LL57 2UW, UK Abstract Acid mine drainage (AMD) causes environmental pollution that affects many countries having historic or current mining industries.

Preventing acid mine drainage from mine tailings

The net result of acid-generating and-neutralizing reactions within mining wastes is termed acid rock drainage (ARD). The oxidation of sulfide minerals is the major contributor to acid generation. Dissolution and alteration of various minerals can contribute to the neutralization of acid. Definitions of alkalinity, acidity, and buffer capacity are reviewed, and a detailed discussion of the ...

Acid Metalliferous/Mine Drainage (AMD) and Management

Keywords: Acid Mine Drainage, tailings, sulphide ores, soils and groundwater contamination,heavy metals, leachate. 1 Introduction 1.1 Sulphide mine waste and tailings It is known that mining industry causes negative impacts in its surrounding area. The production of acid mine drainage (AMD) has long been known to occur in ©

CONTROL OF ACID ROCK DRAINAGE FROM MINE …

Acid Potential Ratio (Calculation) – is the ratio of ANC/MPA and is used to classify material as either NAF or PAF (see definitions below). ARD Acid Rock Drainage – the use of this term indicate natural weathering and oxidation unmined outcrops of sulfide bearing materials. Kinetic Testing

(PDF) Disposal, reprocessing and reuse options for acidic ...

Acid mine drainage detrimentally affects thousands of surface watercourses throughout the world and costs tens of millions of dollars annually in site remediation expenditures. This process is accelerated by the activity of iron- and sulfur-oxidizing bacteria which grow chemolithotrophically in mine tailings. Low cost, environmentally

reprocessing mine tailings to control acid rock drainage

Acid mine drainage (AMD) or acid rock drainage (ARD) is considered as one of the main pollutants of water in many countries that have historic or current mining activities.

Mend | Default - Mend | MEND

Little is known about the microbial communities native to surface-deposited pyritic oil sands tailings, an environment where acid rock drainage (ARD) could occur. The goal of this study was to enrich sulfur-oxidizing organisms from these tailings and determine whether different populations exist …

Acid drainage control – Waihi Gold

Abstract Acid mine drainage (AMD) occurs after mining exposes metal sulfides to oxidizing conditions. Leaching of reaction products into surface waters pollute over 20,000 km of streams in the USA alone. The coal mine permitting process requires prediction of AMD potential via overburden analysis. Where a potential exists, AMD control measures including spoil handling plans, alkaline amendment ...

Control of acid rock drainage from mine tailings through ...

carbonates (Juillot et al., 1999), acid mine drainage (AMD) – also called acid rock drainage – is generated. A A worldwide estimate assumes that about 20,000 km of river and 70,000 ha of lake ...

Remediation Techniques - Harvard University

MINE, WATER & ENVIRONMENT. 1999 IMWA Congress. Sevilla, Spain PERMANENT SEALING OF TUNNELS TO RETAIN TAILINGS OR ACID ROCK DRAINAGE Brennan Lang TSS Tunnel & Shaft Sealing Ltd. PO Box 489 Brackendale, B.C. VON 1HO, Canada Phone: + 1 604 608 3230, Fax: + 1 604 898 5483 e-mail: [email protected] ABSTRACT

Permanent Sealing of Tunnels to retain Tailings or Acid ...

MINE, WATER & ENVIRONMENT. 1999 IMWA Congress. Sevilla, Spain PERMANENT SEALING OF TUNNELS TO RETAIN TAILINGS OR ACID ROCK DRAINAGE Brennan Lang TSS Tunnel & Shaft Sealing Ltd. PO Box 489 Brackendale, B.C. VON 1HO, Canada Phone: + 1 604 608 3230, Fax: + 1 604 898 5483 e-mail: [email protected] ABSTRACT

Pb–Zn mine tailings reprocessing using centrifugal dense ...

Control of acid mine drainage from an abandoned mine in Morocco by using cement kiln dust and fly ash as amendments S. Nfissi1, S. Alikouss1, Y. Zerhouni1, R. Hakkou2, M. Benzaazoua3,4, H. Bouzahzah3 1.Laboratory of Ancient Chain Geodynamics, Department of Geology, University of Hassan II-Casablanca, Av. Hassan II - B.P 7955, Casablanca, Morocco.

Evaluation of Acid Rock Drainage Potential in a ...

Jan 04, 2013· Acid Mine Drainage (AMD) can result when the mining process exposes mine wastes, tailings, or workings which contain quantities of reactive sulphides. Exposure of these reactive sulphides to oxygen and water may result in acid generation. The physico-chemical oxidation reactions which

INTEGRATED ACID ROCK DRAINAGE MANAGEMENT AT THE …

Since 1989, the Mine Environment Neutral Drainage (MEND) program has worked to develop technologies to prevent and control acidic drainage. The program is directed by a multi-stakeholder committee, with members from the mining industry, federal and provincial governments, and non-government organizations.

Guideline Document for Monitoring Acid Mine Drainage ...

ACID MINE DRAINAGE PREVENTION AND CONTROL OPTIONS Nural Kuyucak Golder Associates Ltd. 1796 Courtwood Crescent Ottawa, Ontario, Canada K2C 2B5 Phone:+ 1 613, Fax:+ 1 613 e-mail: [email protected] ABSTRACT Acid mine drainage (AMD) is one of most significant environmental challenges facing the mining industry worldwide.

Acid Metalliferous/Mine Drainage (AMD) and Management

Keywords: Acid Mine Drainage, tailings, sulphide ores, soils and groundwater contamination,heavy metals, leachate. 1 Introduction 1.1 Sulphide mine waste and tailings It is known that mining industry causes negative impacts in its surrounding area. The production of acid mine drainage (AMD) has long been known to occur in ©

Circular Economics, Reprocessing Waste And Mining - Mining ...

Jan 15, 2019· However, the tailings storage represents the major disturbance phase at mining operations and it may generate if not properly managed, serious environmental impacts such as Acid Mine Drainage (AMD), soils pollution and waters contamination (Dold, 2017, Falagán et al., 2017, Khalil et al., 2013, Hakkou et al., 2008, Wolkersdorfer and Bowell, 2004).

Utilization of Atikokan coal fly ash in acid rock drainage ...

Aug 06, 2020· One only needs to consider the expense of dealing with the consequences of acid mine drainage and tailings dam failures to see why cleaning waste to …

Developing a Guide for Acid Rock Drainage at Mine Sites ...

Waste rock at a former iron mine with 70 million tonnes of rock distributed in 15 dis-crete deposits was evaluated for acid generating characteristics. Two of the 15 deposits exhibited acidic drainage while all others remained neutral 25 to 40 years aˆ er depo-sition. ˜ e carbonate neutralization potential (Carb-NP) exceeded the acid potential

Mend | Default - Mend | MEND

Since 1989, the Mine Environment Neutral Drainage (MEND) program has worked to develop technologies to prevent and control acidic drainage. The program is directed by a multi-stakeholder committee, with members from the mining industry, federal and provincial governments, and non-government organizations.

(PDF) Reprocessing of Mining waste:combining environmental ...

Acid mine drainage (AMD) or acid rock drainage (ARD) is considered as one of the main pollutants of water in many countries that have historic or current mining activities.