Alternative neutralisation materials for acid mine drainage treatment

Kaur, Gurkiran; Couperthwaite, Sara J.; Hatton-Jones, Bradley; Millar, Graeme J.

doi:10.1016/j.jwpe.2018.01.004

Cited by 97 publications

(39 citation statements)

References 41 publications

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“…Approximately 99.8% of iron from the water samples was removed. Iron in the ferric state should readily precipitate as oxyhydroxide compounds (FeO(OH)), as shown in Equation (5), at pH values greater than 3.5 [17].…”

Section: Mechanism Of Acid Neutralization and Precipitation Of Metalsmentioning

confidence: 99%

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)

Petronijević

Stanković

Radovanović³

et al. 2019

Metals

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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.Metals 2020, 10, 16 2 of 15 conducted by Pavlović et al. [8]. They used a laboratory scale cascade line system with three reactors for selective precipitation of metals such as iron, copper, nickel, and arsenic from the synthetic solution that resembled acidic effluent from the open pit mine from the Bor area. The neutralizing agent was 1 M NaOH. Recently, Masuda et al. [9] applied hydrated lime (Ca(OH) 2 ) for neutralization of acidity and selective precipitation of metals from the water collected from Lake Robule using semi-industrial scale equipment for active AMD treatment with two chemical reactors. Stopic et al.[10] used red mud from Greece and Germany firstly for neutralization of AMD (pH value of 2.3) from South Africa and for precipitation of copper. Mwewa et al. [11] performed precipitation of poly-alumino-ferric sulfate coagulant for wastewater treatment using AMD solution from South Africa.There are active and passive methods in the treatment of AMD [12,13]. The conventional method for active neutralization of the acid mine drainage is the application of Ca(OH) 2 . This process is fast and efficient; hydrated lime increases the pH of the solution, resulting in precipitation of the dissolved metals in the form of metal hydroxides [14]. The main disadvantage of this technology is generation of the voluminous sludge. The price of the lime and need for the dehydration, solidification, and stabilization of the sludge after treatment increase the capital and operational costs of the AMD neutralization process [14][15][16]. More recently, passive methods have been attracting more attention due to reduced energy and maintenance costs [13]. With a view toward sustainable development, many studies have focused on finding alternative materials for AMD neutralization. Kaur et al. [17] investigated the application of the waste material from the alumina refining industry (Bayer liquor and precipitates formed by sea water neutralization of the Bayer liquor) to treat AMD from mine pit water. Kefeni et al. [18] reviewed technologies for AMD treatment, including alternative approaches for AMD neutra...

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Section: Mechanism Of Acid Neutralization and Precipitation Of Metalsmentioning

confidence: 99%

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)

Petronijević

Stanković

Radovanović³

et al. 2019

Metals

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“…Pyrite will react with oxygen and water to produce acidic discharge which acts as a leaching agent of toxic metals and trace elements available in the host rocks (Kefeni et al, 2018). Equations 1 to 4 show the formation of acid drainage in the presence of air (oxygen), water and bacteria (Bwapwa et al, 2017;Othman et al, 2017;Kaur et al, 2018). The pyrite (FeS 2 ) oxidation releases hydrogen, sulphate and ferrous irons (Fe 2+ ) (Eq.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PES and PES/chitosan membranes for synthetic acid mine drainage treatment

Mathaba

Daramola

2020

WSA

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In this study, chitosan was synthesised from chitin and used to modify polyethersulphone (PES) membrane prepared by the phase inversion method. PES membrane was blended with various concentrations of chitosan to produce PES/0.5 wt% chitosan, PES/0.75 wt% chitosan and PES/1 wt% chitosan membranes. The membranes were tested for metal and sulphate removal from acid mine drainage (AMD). The fabricated membranes were characterised using scanning electron microscopy (SEM), contact angle analyser, Fourier transform infrared (FTIR), porosity determination and pure water flux measurements. Separation performance was conducted on a dead-end filtration cell and metal ions were determined by atomic absorption spectroscopy (AAS), and ultraviolet and visible (UV-vis) spectrophotometry was used for sulphates. Pure water flux of the pristine PES membrane increased from 102 L∙m−2∙h−1 to 107 L∙m−2∙h−1 and 133 L∙m−2∙h−1 for PES/0.5 wt% and PES/0.75 wt%, respectively. Further addition of chitosan to 1 wt% created a dense structure on the membrane surface, thereby reducing the flux to 120 L∙m−2∙h−1. The rejection of cations and sulphate ions significantly improved for chitosan-modified membranes due to the creation of adsorptive and/or repulsive sites on the chitosan biopolymer as a result of amine group protonation. The results reveal that chitosan has potential to improve performance of PES membranes as a hydrophilic agent during AMD treatment.

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“…The excess mine water creates an accumulation of mud from being saturated with additional rainwater. Water accumulation, mud layers, mud sediments and wet mining areas are a problem that complicates activity in coal mining leading to the following: (a) large amounts of mine water inhibits production targets especially in wet months (during the rainy season) when all aquifers are filled with water [7], (b) the drainage systems, designed to keep the mine pit bottom in dry conditions is overburdened [8], therefore production targets cannot be achieved, (c) wet areas and mud sediments are hazardous conditions related to safety and health aspects of coal mines [9], (d) handling mine water containing sludge and acidic sediments is required before the water flows into the river [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Design of coal mine drainage system

2019

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Research from coal fields show that increased production from coal mines resulted in a wider pit. Changes in the water catchment area resulted in changes in the calculation of mine water volume. Excessive mine water volume affects mining activities. Large amounts of water in the pit causes disruption in excavation and loading and hauling activities. Therefore, the design of mine drainage systems is required. The purpose of the study is to analyse statistically the parameters of the mine drainage system, and to design the mine drainage system; including open drain, sump, and settling pond. The research tools used include the calculation of runoff water discharge that requires statistical analysis for rainfall data processing and the determination of catchment area (CA). The open channel dimension and settling pond design is based on the sump volume calculation. The research area has high rainfall clased for the particle to settle is 30.38 minutes. The percsification, solid percent 2.66 % with settling rate 0.0027 m/s; the time requirentage of theoretically suctioned particle is 83 %, and the settling pond maintenance time that has 4 compartments is 15, 16, 19, and 23 days.

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Alternative neutralisation materials for acid mine drainage treatment

Cited by 97 publications

References 41 publications

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)

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)

Synthesis of PES and PES/chitosan membranes for synthetic acid mine drainage treatment

Design of coal mine drainage system

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