1 edition of Characterization and stability of acid mine drainage treatment sludges found in the catalog.
Characterization and stability of acid mine drainage treatment sludges
|Contributions||Canada Centre for Mineral and Energy Technology, MEND (Canada)|
|LC Classifications||TD899.M5 C52 1997|
|The Physical Object|
|Pagination||1 vol. (various pagings) :|
the mine waste volume to be processed and stored . Preventive techniques for acid mine drainage In mining areas with high concentrations of pollutants, AMD treatment costs can have a significant impact on the economic performance, even to compromise the project viability, so that, AMD formation should be prevented. dissociated sulphuric acid. You can see from equation (1) that in order for these reactions to happen, the pyrite must be exposed to both air and Mining is one of South Africa’s most important industries, but it comes with a cost. Rebecca Garland explains about acid .
Acid mine drainage (AMD) remediation commonly produces byproducts which must be stored or utilized to reduce the risk of further contamination. A mussel shell bioreactor has been implemented at a coal mine in New Zealand, which is an effective remediation option, although an accumulated sludge layer decreased efficiency which was then removed and requires : Sara C. Butler, James Pope, Subba Rao Chaganti, Daniel D. Heath, Christopher G. Weisener. Acid drainage, usually referred to as acid mine drainage (AMD) occurs as a result of naturally oc-curring chemical reactions of exposed sulphide containing minerals with water, oxygen and bac-teria (Down and Stocks ). The bacteria known as Acidthiobacillus (formerly thiobacillus) ferroox-idans (Kelly and Wood ) acts as the catalyst in File Size: KB.
An Introduction to Acid Mine Drainage. by. George Mitchell. and Tim Craddock. AMD affects over miles of. extent of acid mine drainage. Discharge is the most important measurement. and acid are known, a treatment system can be designed. Chemical Treatment Examples. Anhydrous Size: 6MB. Final Report: The Use of Sludge Generated by the Neutralization of Acid Mine Drainage in the Cement Industry EPA Contract Number: EPD Title: The Use of Sludge Generated by the Neutralization of Acid Mine Drainage in the Cement Industry Investigators: Silsbee, Michael Small Business: RJ Lee Group, Inc. EPA Contact: Richards, April Phase: I Project Period: March 1, through September .
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XRD graphic analysis of dried acid mine drainage sludge Specific surface area, pore volume and pore size of dried acid mine drainage sludge sample also being identified by BET method and the. a - Characterization and Stability of Acid Mine Drainage Sludges - Acid mine drainage (AMD) and other acidic metalliferous effluents are commonly treated by the mining and metallurgical industries by lime neutralization.
Chemical Stability of Acid Rock Drainage Treatment Sludge and Implications for Sludge Management DANNY M. MCDONALD* AND JOHN A. WEBB Environmental Geoscience, La Trobe University, VictoriaAustralia JEFF TAYLOR Earth Systems, Suite1 Princess Street Kew, VictoriaAustralia To assess the chemical stability of sludges generated byFile Size: KB.
Introduction. Acid mine drainage (AMD) is one of the most significant environmental issues related to the mining industry. It is caused by the oxidation of sulfide minerals present in the mine waste when exposed to air and precipitation, such as in mine waste storage facilities (tailings impoundments and waste rock piles).Cited by: A major problem in the active treatment of acid mine drainage (AMD) is the generation of large volumes of sludge through pH neutralization and subsequent metal precipitation.
This SpringerBrief focuses on Acid Mine Drainage (AMD) in the three basins in the Witwatersrand, South Africa. It provides a background to AMD and its impactsfrom a social science South African government and non-governmental organizations’ response to AMD is assessed, as well the socio-economic and developmental effects of AMD.
Sludge characterization involves description of sludge behaviour in treatment processes and disposal. Appropiate characterization methods facilitate understanding and prediction of sludge properties. The characterization parameters belong to one of three cathegories: Indication of quantity, treatability or Cited by: 5.
acid mine drainage treatment Gary B. Keefer, William A. Sack One of the most devastating pollution problems in the Appalachian region is that of acid mine drainage (AMD). With the expected increase in coal usage, the production of AMD and the associated waste sludge (AMDS) produced from lime neutralization of AMD will increase.
Valorisation of acid mine drainage treatment sludge as remediation component to control acid generation from mine wastes, part 1: Material characterization and laboratory kinetic testing.
Author links open overlay panel Isabelle Demers a Mostafa Benzaazoua a Mamert Mbonimpa a Médard Bouda a Denis Bois a Mario Gagnon by: Limestone-Lime Neutralization The inefficient limestone treatment of mine drainage containing large amounts of ferrous iron (above mg/1) has, in part, induced studies of a treatment method that combines limestone and lime into a split treatment system.(47,48) Limestone is used to raise the pll of the mine water to about and then lime is.
The treatment of acidic mineral effluents, such as acidic drainage (AD), acid mine drainage (AMD), acid rock drainage (ARD) and process water, is commonly accomplished through lime neutralization. This centuries old technology is effective in raising the pH of the water and precipitating the File Size: KB.
Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks.
ATTENUATION OF ACID MINE DRAINAGE ENHANCED BY ORGANIC CARBON AND LIMESTONE ADDITION: A PROCESS CHARACTERIZATION MAY ANNA MARGARET GILLMOR, B.S., VALPARAISO UNIVERSITY MASTER OF SCIENCE, UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Professor Richard Yuretich Surface and groundwaters in contact with mining-exposed.
Fourth International Conference on Acid Rock Drainage: Vancouver, B.C. Canada, May 31 - June 6, Proceedings by International Conference on Acid Rock Drainage (Book) 1 edition published in in English and held by 9 WorldCat member libraries worldwide.
Abstract: Lime lime Subject Category: Chemicals and Chemical Groups see more details treatment of acid mine drainage acid mine drainage Subject Category: Miscellaneous see more details (AMD) generates large volumes of neutralization neutralization Subject Category: Miscellaneous see more details sludge that are often stored under water covers.
The sludge consists mainly of calcite calcite Cited by: Sludge disposal from acid mine drainage treatment [Terry E. Ackman] on *FREE* shipping on qualifying offers. Acid mine drainage will continue to be a problem in the future and treatment technologies will be important for everything from the health of the stream and wildlife in.
Characterization of the microbial acid mine drainage microbial community using culturing and direct sequencing techniques Ryan R. Auld a,1, Maxine Myre b,1, Nadia C.S.
Mykytczuk c, Leo G. Leduc c, Thomas J.S. Merritt a,⁎ a Department of Chemistry & Biochemistry, Laurentian University, Canada b School of Human Kinetics, University of Ottawa, Canada c Department of Biology, Laurentian. Acid mine drainage (AMD) is extremely dangerous because of its low pH (usually below 5) and high concentration of heavy metals, sulfate and salinity.
When the disturbed surfaces, such as pit walls and front mining, are exposed to the air and leached by water, AMD will occur due to the abundant availability of sulfide : Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Ginting Jalu Kusuma, Takashi Sasaoka, Fatimah Kote.
Flocculants can improve the dewaterability of the acid mine drain- age sludges tested by as much as 74 percent. Filter aids can improve the dewaterability of the acid mine drainage sludges tested by as much as 11 percent.
It is technically feasible to dewater all sludges tested by all dewatering systems tested except as noted below. Acid Mine Drainage Environmental Notes on Mining, updated September Pyrite (FeS2) is commonly associated with coal and metal ore deposits.
Its oxidation occurs spontaneously in nature, causing environmental problems like Acid Mine Drainage (AMD) and File Size: KB.Acid Mine Drainage Research Acid mine drainage (AMD) has been the subject of intensive research since the 's. Research efforts have proceeded recently through the Acid Drainage Technology Initiative.
The major areas of research on AMD are Prediction of AMD and Prevention/Mitigation. The following is an overview of information on some major File Size: 89KB. Acid mine drainage 1. Special Topic in Mining Engineering-II (MN) Assignment-1 Issues of Acid Mine Drainage and Its Remedial Measures Submitted by Satyabrata Nayak MN 2.
Acid mine drainage treatment, East Rand, South Africa AMD waters in the Rio Tinto, Spain 3.