Evaluation of acid mine water body water quality treatment with fly ash

The handling of Acid Mine Water done at PT. Alamjaya Bara Pratama utilizes Cao and from prior research, fly ash is used as an adsorbent in neutralising Acid Mine Water. Hence the resarcher conducted the research to compare the effectiveness of Cao and fly ash in neutralising Acid Mine Water. The usage of CaO nd fly ash uses a laboratorium scale with 1000ml of Acid Mine Water, a CaO mass variation of 0,4, 0,5 and 0,6 gram whereas with a fly ash mass variation of 50, 55 and 60 gram and a stirring speed of 50 and 100 rpm. Results shows that the addition of CaO and fly ash and stirring speed increases the pH and reduces the content of Fe and Mn. The adsorbtion of the metals Fe and Mn by CaO and coal fly ash can occurs as most CaO contains the mineral compund Epistilbite (CaAl2Si6O16.5H2O), before conducting the experiment it shows that most of the fly ash contains the mineral compund Quartz (SiO2) and mullite (Al6Si2O13). Silica and Alumina has a polar side with an active hydroxyl group (-OH) which acts in the adsorbtion process between heavy metals and adsorbents in a solution containing water.

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Removal of Ions and Acidity from Acid Mine Water Using Transformed Fly Ash

Mine Water and the Environment ◽

10.1007/s10230-013-0222-z ◽

2013 ◽

Vol 32 (2) ◽

pp. 133-138 ◽

Cited By ~ 2

Author(s):

Bably Prasad ◽

Arun Kr. Mahato ◽

Hemant Kr. Mondal ◽

B. K. Tewary

Keyword(s):

Fly Ash ◽

Mine Water ◽

Acid Mine Water ◽

Acid Mine

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Treatment of Acid Mine Drainage Water Using Fly Ash and Water Softening Sludge

MRS Proceedings ◽

10.1557/proc-245-89 ◽

1991 ◽

Vol 245 ◽

Cited By ~ 1

Author(s):

Asmare Atalay ◽

Srinivas Chaluvadi ◽

Joakim G. Laguros ◽

Jerry J. Black

Keyword(s):

Fly Ash ◽

Acid Mine Drainage ◽

Mine Water ◽

Environmental Protection Agency ◽

Mine Drainage ◽

Abandoned Mines ◽

Water Quality Criteria ◽

Water Softening ◽

Acid Mine Water ◽

Acid Mine

ABSTRACTAcid mine drainage (AMD) is being recognized as a major pollution source to surface water. Heavy trace metals emanating from abandoned mines are continuously being released and contaminating surrounding lakes and streams. The potential for utilizing fly ash and water softening sludge (WSS) as buffering and adsorption media for AMD water was assessed. The results indicated that AMD water treated with fly ash either met or exceeded the U.S. Environmental Protection Agency water quality criteria for effluent standards for total iron, manganese, suspended solids, and pH. The optimum dosage of fly ash and sludge needed for treating the acid mine water from Picher field, an abandoned lead and zinc mine in Oklahoma, has been determined. It was observed that each had better than 90 percent efficiency for removal of heavy metals from the AMD water. The combined use of fly ash and WSS was also investigated, but there was no significant improvement compared to using fly ash alone. In general fly ash had a greater buffering capacity to treat acid mine water than did WSS. Consequently, fly ash can be used to treat AMD water and minimize its environmental impact.

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