Removal of Copper from Acid Mine Drainage (AMD) or Acid Rock Drainage (ARD)

AbstractThe Tinto river is one of the most polluted stream environments in the world, as a result of both acid mine drainage and natural acid rock drainage. Two representative samples from the phyllosilicate-rich rocks exposed in the drainage basin (Palaeozoic chlorite-bearing slates and Miocene smectite-rich marls) were treated with acid river water (pH = 2.2) for different times to constrain the effects of extreme hydrogeochemical conditions on clay mineral stability. Illite and kaolinite did not show appreciable variations in their crystal chemistry parameters upon treatment. Chlorite underwent an incipient chemical degradation evidenced by the progressive loss of Fe in octahedral positions coupled with a shortening of the b unit-cell parameter, although no weathering products of chlorite were observed. Smectite and calcite were rapidly and fully dissolved thus neutralizing the water acidity, and subsequently Fe and Al oxy-hydroxides and opaline silica precipitated from the aqueous solution, together with a neoformed amorphous silicate phase largely enriched in Al and Mg.

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Acid mine drainage mitigation: A review

Ingeniería Industrial ◽

10.26439/ing.ind2020.n039.4917 ◽

2020 ◽

pp. 97-118

Author(s):

Daniel Lazo

Keyword(s):

Acid Mine Drainage ◽

Large Scale ◽

Mine Drainage ◽

Acid Rock Drainage ◽

Human Beings ◽

Mining Operations ◽

Aquatic Life ◽

Acid Rock ◽

Sulphide Minerals ◽

Acid Mine

Acid mine drainage (AMD) or acid rock drainage (ARD) refers to the effluents from coal and metal mines. AMD is a common phenomenon which occurs naturally as a process of rock weathering, but is increased in large scale due to human activities such as construction contracts (transportation corridors, dam build, etc.) and mining operations. This phenomenon denotes the acidic water that is produced during exposure of sulphide minerals (mainly pyrite) to air and water through a natural process, and creates sulphuric acid. AMD is a hazard to animals, aquatic life and human beings as it increases the acidity and dissolves metals. Preventing and treating AMD is an important issue in a mine site not only during operation life but also after the mine is abandoned.

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Acid mine drainage and acid rock drainage processes in the environment of Herrerías Mine (Iberian Pyrite Belt, Huelva-Spain) and impact on the Andevalo Dam

Environmental Geology ◽

10.1007/s00254-004-1142-9 ◽

2004 ◽

Vol 47 (2) ◽

pp. 185-196 ◽

Cited By ~ 41

Author(s):

J. A. Grande ◽

R. Beltrán ◽

A. Sáinz ◽

J.C. Santos ◽

M. L. de la Torre ◽

...

Keyword(s):

Acid Mine Drainage ◽

Mine Drainage ◽

Acid Rock Drainage ◽

Iberian Pyrite Belt ◽

Acid Rock ◽

Acid Mine

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Bibliography for acid-rock drainage and selected acid-mine drainage issues related to acid-rock drainage from transportation activities

Open-File Report ◽

10.3133/ofr20151016 ◽

2015 ◽

Author(s):

Michael W. Bradley ◽

Scott C. Worland

Keyword(s):

Acid Mine Drainage ◽

Mine Drainage ◽

Acid Rock Drainage ◽

Acid Rock ◽

Acid Mine

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Penerapan Wetland untuk Pengelolaan Air Asam Tambang

KURVATEK ◽

10.33579/krvtk.v3i2.860 ◽

2018 ◽

Vol 3 (2) ◽

pp. 41-46

Author(s):

Agus Panca Adi Sucahyo ◽

Waterman Sulistyana Bargawa ◽

Mohammad Nurcholis ◽

Tedy Agung Cahyadi,

Keyword(s):

Heavy Metals ◽

Acid Mine Drainage ◽

Mine Drainage ◽

Mining Industry ◽

Acid Rock ◽

Acid Mine ◽

Run Off ◽

Environmental Pollution Problem ◽

State Water ◽

Wetland System

ABSTRAKAir asam tambang (AAT) merupakan air dengan kandungan pH rendah (di bawah 5) yang ditimbulkan akibat industri pertambangan. AAT terbentuk dari bertemunya tiga komponen, yaitu batuan yang mengandung sulfat, air dan udara. Batuan yang mengandung asam (potential acid foarming) yang terkupas selama kegiatan penambangan dapat membentuk AAT setelah bertemu udara dan air yang berasal dari paparan air hujan langsung, air limpasan dan rembesan air tanah. Air limpasan yang tercemar tersebut mempunyai pH sekitar 2 – 4 dengan kandungan logam berat berupa Al, Fe, Mn, Cu dan Zn. Metoda dalam pengelolaan AAT terdiri dari sistem aktif dan sistem pasif. Paper ini membahas mengenai pengelolaan AAT dengan menggunakan sistem pasif wetland. Cakupan yang dibahas menyajikan beberapa hal terkait wetland diantaranya: ukuran wetland dan desain wetland yang tepat termasuk keasaman air yang keluar dari tambang (pH), kondisi reaksi oksidasi, laju aliran air serta waktu yang diperlukan dalam proses wetland serta luasan area yang tersedia untuk konstruksi wetland. Manfaat yang dihasilkan dari studi ini dapat digunakan untuk penelitian selanjutnya dalam rangka program penutupan tambang tembaga dan emas.Kata kunci: wetland, remediasi pasif, air asam tambang (AAT) Acid mine drainage (AMD) is the most significant environmental pollution problem with a low pH (below 5) caused by the mining industry. AMD is former from three components, exposed acid rock contain sulphate, water and air. The exposed acid rocks (potential acidic forming) during mining activities create a chemical reaction with air and water can be from seepage and run off. The water overflow from pit lake has a pH around 2 – 4 and contain heavy metals, i.e. Al, Fe, Mn, Cu, and Zn. The methods of AMD treatments that are active and passive systems. This paper discusses the AMD treatment using passive wetland system. Main factors passive removal of acidity and heavy metals using wetlad system when determining type and size appropriate wetland system include the influent acidity, pH, redox state, water flow rates and retention times, the area available for wetland. The benefits of this study for passive AMD treatment using wetland can be used for further research to supporting the copper and gold mine closure program. Keywords: wetland, passive reamediation, acid mine drainage

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