Acid Mine Drainages From Abandoned Mines

Favas, Paulo J.C.; Sarkar, Subhasis; Rakshit, Dibyendu; Venkatachalam, P.; Prasad, M.N.V.

doi:10.1016/b978-0-12-803837-6.00017-2

Cited by 37 publications

(19 citation statements)

References 170 publications

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“…In the mining sector for metal production, the most crucial factors are pH, the heavy metals concentration, and dissolved anion concentration, i.e., sulfate, chlorides, arsenates, nitrates, etc., and hardness as well as suspended solids. For a better characterization of AMD as well as the properties of waste which are affected by AMD is summarized into five common features listed as follows [3].…”

Section: Characteristics Of Amd Wastewatermentioning

confidence: 99%

Performance Evaluation of Waste Materials for the Treatment of Acid Mine Drainage to Remove Heavy Metals and Sulfate

Bhuyan¹,

Bhuyan²,

Sahu³

2022

Water Quality - Factors and Impacts

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Acid Mine Drainage (AMD) is the most severe environmental problem facing the mining sector in the current scenario because of low pH and high pollutants concentration. AMD contains a high amount of sulphate viz. pyrite, FeS2, and to a lesser extent pyrrhotite and heavy metal ions, contaminate both surface water and groundwater. To treat AMD, extensive research projects have been initiated by governments, the mining industry, universities, and research establishments. The environmental impact of AMD can be minimized at these basic levels; prevention should be taken to control the infiltration of groundwater to the pollution site and control the acid-generating process. There are some conventional active methods to treat AMD, such as compost reactor and packed bed iron-oxidation bioreactors; however, these methods have associated with costly material and high maintenance cost, which increases the cost of the entire treatment. In an alternative, the use of low-cost materials such as fly ash, metallurgical slag, zero-valent iron (ZVI), cement kiln dust (CKD), and organic waste such as peat humic agent (PHA), rice husk, and eggshell can be a valuable measure for economic viability to treat the metal-rich wastewater.

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Section: Characteristics Of Amd Wastewatermentioning

confidence: 99%

Performance Evaluation of Waste Materials for the Treatment of Acid Mine Drainage to Remove Heavy Metals and Sulfate

Bhuyan¹,

Bhuyan²,

Sahu³

2022

Water Quality - Factors and Impacts

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“…The value of 650 NTU of turbidity indicated the presence of high quantity of dyes, pigments and colloidal substances (Hongve & Åkesson, 1996;Guaratini & Zanoni, 2000;Carmen & Daniela, 2012;Ghaly et al, 2014;Chandran, 2016). High colored effluents were seen to affect the visual appearance of water bodies, influence the rate of photosynthesis and, in extreme cases, cause the eutrophication of aquatic ecosystems (Pierce, 1994;Beltrame, 2000;Sarayu & Sandhya, 2012;Favas et al, 2016;Gómez et al, 2017). The quantity of 1.0 mg L -1 of settleable, 395 mg L -1 of suspend, 6395 mg L -1 of dissolved and 6790 mg L -1 of total solids, indicated the presence of high quantities of yarns and lint that were released from the fibers, as much as the presence of substances like salts, alkalis and acids that were used in the textile processing (Correia et al, 1994;Ghaly et al, 2014;Chandran, 2016).…”

Section: Physicochemical Parametersmentioning

confidence: 99%

“…The quantity of 1.0 mg L -1 of settleable, 395 mg L -1 of suspend, 6395 mg L -1 of dissolved and 6790 mg L -1 of total solids, indicated the presence of high quantities of yarns and lint that were released from the fibers, as much as the presence of substances like salts, alkalis and acids that were used in the textile processing (Correia et al, 1994;Ghaly et al, 2014;Chandran, 2016). According to reports, if released in excess, those solids may affect the oxygenation of water bodies, decrease the photosynthesis rate and cause negative effects on aquatic ecosystems (Dey & Islam, 2015;Favas et al, 2016). The BOD5 value of 1747 mg L -1 , COD a value of 3595 m L -1 and ISSN 2327-0640 2020 BOD/COD ratio of 0.49 indicated a mean presence of non-biodegradable organic matter.…”

Section: Physicochemical Parametersmentioning

confidence: 99%

Microbial Population Inhibition Method Through Spectrophotometry Absorption of Visible Light Applied to Ecotoxicological Analyses

Mainardi

Bidóia

2020

JAB

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Ecotoxicology is a science that studies the effects of pollutants and forecast their transformations on the environment. Ecotoxicological studies have been used in soil and water quality assessment, development and implementation of new techniques of water and effluent treatment, tools for better industrial management, bioremediation techniques and sustainable agriculture approaches. Microorganisms, which were seen to detain a fundamental importance in nutrient cycling and energy flow, have been increasingly used as bioindicators in ecotoxicological analyses. The populational inhibition of microbiological strains may be measured through the absorbance of visible light, an efficient, fast, low-cost and reliable method that has been widely used in qualitative and quantitative analysis. In this manuscript, a real textile effluent sample was analyzed regarding its electric conductivity, pH, turbidity, solids, alkalinity, biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and a spectrophotometry microbial population inhibition (MPI) method using the Bacillus subtilis bacteria and the Saccharomyces cerevisiae yeast. The EC20, EC50 and acute toxicity indexes were satisfactory in relation to the widely used method of light reduction of the Vibrio fischeri luminescence bacteria. The MPI was shown to be a feasible method to determine the hazardous effects caused by the textile effluent sample towards the microbial populations.

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“…One of the primary concerns for opponents to copper-nickel-precious metal mining is the potential threat of acid mine drainage. When sulfide minerals (i.e., pyrite) are exposed to oxygen, water, and bacteria (weathering), they generate acidic environments [48,49] through the production of sulfuric acid [50]. Once this sulfuric solution is released into the environment, it often leeches heavy metals from rocks.…”

Section: Ecological Sustainability Of Miningmentioning

confidence: 99%

Balancing Socio-Ecological Risks, Politics, and Identity: Sustainability in Minnesota’s Copper-Nickel-Precious Metal Mining Debate

Bergstrom

Clarke-Sather

2020

Sustainability

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In the northeastern corner of Minnesota, two of the state’s most iconic symbols, mining and pristine wilderness, are on a collision course. The Duluth Complex, considered by many to be the world’s largest undeveloped deposit of copper-nickel and precious metals, is the site of mining proposals for several controversial mines. Proponents suggest that mining can be accomplished in an environmentally benign manner, and in the process create nearly 1000 jobs and $500 million in economic benefits annually. Opponents counter that the tourism and recreation industries already provide nearly 18,000 jobs and bring over $900 million in economic benefits annually, and that mining will permanently impair the regions environment. Thus, the copper-nickel and precious metal mining debate has become highly polarized, and serves as an ideal example of how people address national and global sustainability issues at local and regional scales. This study examines this polarization through a Q-sort analysis of subjectivities of residents of the state of Minnesota. Results suggest that partisanship is a strong predictor of attitudes towards mining, and that the strongest differences between respondents were not based on perceptions comparing jobs and the environment, the typical partisan divide, but rather on respondents’ perceived identity with relation to the mining industry or water resources.

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Acid Mine Drainages From Abandoned Mines

Cited by 37 publications

References 170 publications

Performance Evaluation of Waste Materials for the Treatment of Acid Mine Drainage to Remove Heavy Metals and Sulfate

Performance Evaluation of Waste Materials for the Treatment of Acid Mine Drainage to Remove Heavy Metals and Sulfate

Microbial Population Inhibition Method Through Spectrophotometry Absorption of Visible Light Applied to Ecotoxicological Analyses

Balancing Socio-Ecological Risks, Politics, and Identity: Sustainability in Minnesota’s Copper-Nickel-Precious Metal Mining Debate

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