Pre-Mine Prediction of Acid Mine Drainage

Ferguson, Keith; Erickson, Patricia M.

doi:10.1007/978-3-642-61362-3_2

Cited by 34 publications

(11 citation statements)

References 9 publications

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“…Methods for prediction of the APP and ACC of mine tailings has been reviewed recently by Ferguson and Erickson (1988). Geochemical static tests of mine wastes most commonly examine the ferrous sulfide sulfur content of the sample, which is converted to the stoichiometric equivalent of acid produced on its complete oxidation.…”

Section: Methodsmentioning

confidence: 99%

Geochemical characterization of the potential trace metal mobility in cohesive sediments

Kersten

Förstner

1991

Geo-Marine Letters

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Abstract. The Acid-Producing Potential (APP) and the Acid-Consuming Capacity (ACC) are introduced as basic parameters for long-term pollution assessment of mud disposal. They can be obtained by a four-step sequential leaching technique. The concentration of Ca extracted by the first Na-acetate step permits calculating the ACC. Both the Fe-and S-fractions deliberated by subsequent leaching steps are used to calculate the APP. When the APP of a sample is substacted from its ACC, a negative value indicates a potential increase of the bioavai/ability of the toxic metal load upon disposal of this mud in oxic environments.

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Section: Methodsmentioning

confidence: 99%

Geochemical characterization of the potential trace metal mobility in cohesive sediments

Kersten

Förstner

1991

Geo-Marine Letters

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“…Once exposed to AMD, the quality of adjacent surface water degrades drastically and eventually becomes unsuitable for sustaining biodiversity. Additionally, soils exposed to AMD become structurally unstable and highly prone to erosion [1][2][3][4]. Mostly, AMD is produced due to the oxidation of pyrite (FeS 2 ).…”

Section: Introductionmentioning

confidence: 99%

Remediation of Acid Mine Drainage-Impacted Water

2015

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The formation of acid mine drainage (AMD), a highly acidic and metal-rich solution, is the biggest environmental concern associated with coal and mineral mining. Once produced, AMD can severely impact the surrounding ecosystem due to its acidity, metal toxicity, sedimentation and other deleterious properties. Hence, implementations of effective post-mining management practices are necessary to control AMD pollution. Due to the existence of a number of federal and state regulations, it is necessary for private and government agencies to come up with various AMD treatment and/or control technologies. This review describes some of the widely used AMD remediation technologies in terms of their general working principles, advantages and shortcomings. AMD treatment technologies can be divided into two major categories, namely prevention and remediation. Prevention techniques mainly focus on inhibiting AMD formation reactions by controlling the source. Remediation techniques focus on the treatment of already produced AMD before their discharge into water bodies. Remediation technologies can be further divided into two broad categories: active and passive. Due to high cost and intensive labor requirements for maintenance of active treatment technologies, passive treatments are widely used all over the world. Besides the conventional passive treatment technologies such as constructed wetlands, anaerobic sulfate-reducing bioreactors, anoxic limestone drains, open limestone channels, limestone leach beds and slag leach beds, this paper also describes emerging passive treatment technologies such as phytoremediation. More intensive research is needed to develop an efficient and cost-effective AMD treatment technology, which can sustain persistent and long-term AMD load.

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“…the waste rock dumps upstream of the Chujah East) was readily available for discharging and the amount of ions being transported outwards depends on the volume of out flowing waters (both surface and underground runoffs). Other downstream factors change the character of the drainage by chemical reaction or dilution [10].…”

Section: Discussionmentioning

confidence: 99%

Acid mine drainage - effect on creeks or streams in a mining community in Ghana and treatment options

Afriyie-Debrah

Obiri‐Danso

Ephraim

2010

2010 International Conference on Environmental Engineering and Applications

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Heavy metals contamination and other physico chemical changes in underground and surface water by acid mine drainage (AMD) were determined on the impact on creeks or streams. High levels of these metals have been reported in mmmg areas over the years; however, investigations indicates that less monitoring has been done on water discharged as effluent for effective maintenance mechanisms to be effected. Field and laboratory studies were carried out within the mining community on Latitude S 2" 35 W and Longitude N 5° 31W to investigate the levels of heavy metals (As, Fe, Cu, Zn, Mn and Cd) and physico-chemical changes (pH, temperature, E.C, D.O, alkalinity, sol·, free CN) in both underground and surface water for seven sampling sites. Results from atomic absorption spectrometry (AAS) determination indicated an average concentrations of iron (6.185 mg/I) and manganese (2.271 mg/I) in both surface and underground waters which are higher than threshold limits for mmmg effluent. The physico-chemical changes were determined using standard methods. Results also indicated higher levels of electric conductivity (1435.0)1s/cm) and sulphate (344.0 mg/I). Differences in pH, temperature, E.C, alkalinity, S042-, Fe, Cu, Zn and Mn levels in the seven water samples were statistically significant (p :'S 0.05). This may be attributed to the higher release of metals, relative to H+. Result also showed significant impact of AMD on water quality in the mining area. This effect could be attributed to the release of metals as a result of oxidation of metal-bearing sulphides in the mine dumps and pits at the selected sampling sites. The study showed that addition of lime as a treatment option has not been effective. Hence new conventional methods such as Aerobic wetland, Compost or Anaerobic Wetland, Open Limestone Channels, Diversion wells, Anoxic Limestone Drains (ALD) etc. should be considered in the treatment of acidic water (AMD) in the mining area.

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Pre-Mine Prediction of Acid Mine Drainage

Cited by 34 publications

References 9 publications

Geochemical characterization of the potential trace metal mobility in cohesive sediments

Geochemical characterization of the potential trace metal mobility in cohesive sediments

Remediation of Acid Mine Drainage-Impacted Water

Acid mine drainage - effect on creeks or streams in a mining community in Ghana and treatment options

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