| |
Records |
Links |
|
Author |
Tsukamoto, T.K.; Miller, G.C. |
|
| |
Title |
Methanol as a Carbon Source for Microbiological Treatment of Acid Mine Drainage |
Type |
Journal Article |
| |
Year  |
1999 |
Publication |
Water Res. |
Abbreviated Journal |
|
|
| |
Volume |
33 |
Issue |
6 |
Pages |
1365-1370 |
|
| |
Keywords |
mine water treatment mining activity sulfate-reducing bacteria microbial activity acid mine drainage methanol passive treatment systems sulfate-reducing bacterium sp-nov |
|
| |
Abstract |
Sulfate reducing passive bioreactors are increasingly being used to remove metals and raise the pH of acidic waste streams from abandoned mines. These systems commonly use a variety of organic substrates (i.e. manure, wood chips) for sulfate reduction. The effectiveness of these systems decreases as easily accessible reducing equivalents are consumed in the substrate through microbial activity. Using column studies at room temperature (23-26 degrees C), we investigated the addition of lactate and methanol to a depleted manure substrate as a method to reactivate a bioreactor that had lost >95% of sulfate reduction activity. A preliminary experiment compared sulfate removal in gravity fed, flow through bioreactors in which similar masses of each substrate were added to the influent solution. Addition of 148 mg/l lactate resulted in a 69% reduction in sulfate concentration from 300 to 92 mg/l, while addition of 144 mg/l methanol resulted in an 88% reduction in sulfate concentration from 300 to 36 mg/l. Because methanol was found to be an effective sulfate reducing substrate, it was chosen for further experiments due to its inherent physical properties (cost, low freezing point and low viscosity liquid) that make it a superior substrate for remote, high elevation sites where freezing temperatures would hamper the use of aqueous solutions. In these column studies, water containing sulfate and ferrous iron was gravity-fed through the bioreactor columns, along with predetermined methanol concentrations containing reducing equivalents to remove 54% of the sulfate. Following an acclimation period for the columns, sulfate concentrations were reduced from of 900 mg/l in the influent to 454 mg/l in the effluent, that reflects a 93% efficiency of electrons from the donor to the terminal electron acceptor. Iron concentrations were reduced from 100 to 2 mg/l and the pH increased nearly 2 units. (C) 1999 Elsevier Science Ltd. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0043-1354 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Apr; Methanol as a Carbon Source for Microbiological Treatment of Acid Mine Drainage; Isi:000079485400004; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10197.pdf; AMD ISI | Wolkersdorfer |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 10197 |
Serial |
50 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Kuyucak, N. |
|
| |
Title |
Mining, the Environment and the Treatment of Mine Effluents |
Type |
Journal Article |
| |
Year |
1998 |
Publication |
Int. J. Environ. Pollut. |
Abbreviated Journal |
|
|
| |
Volume |
10 |
Issue |
2 |
Pages |
315-325 |
|
| |
Keywords |
mine water treatment acid mine drainage high density sludge lime neutralization mining environment passive treatment sulfate-reducing bacteria |
|
| |
Abstract |
The environmental impact of mining on the ecosystem, including land, water and air, has become an unavoidable reality. Guidelines and regulations have been promulgated to protect the environment throughout mining activities from start-up to site decommissioning. In particular, the occurrence of acid mine drainage (AMD), due to oxidation of sulfide mineral wastes, has become the major area of concern to many mining industries during operations and after site decommissioning. AMD is characterized by high acidity and a high concentration of sulfates and dissolved metals. If it cannot be prevented or controlled, it must be treated to eliminate acidity, and reduce heavy metals and suspended solids before release to the environment. This paper discusses conventional and new methods used for the treatment of mine effluents, in particular the treatment of AMD. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0957-4352 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Mining, the Environment and the Treatment of Mine Effluents; Isi:000078420600009; AMD ISI | Wolkersdorfer |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17477 |
Serial |
56 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Gusek, J.J. |
|
| |
Title |
Passive-treatment of acid rock drainage: what is the potential bottom line? |
Type |
Journal Article |
| |
Year |
1995 |
Publication |
Min. Eng. |
Abbreviated Journal |
|
|
| |
Volume |
47 |
Issue |
3 |
Pages |
250-253 |
|
| |
Keywords |
mining acid drainage passive treatment system 3 Geology |
|
| |
Abstract |
Passive-treatment systems that mitigate acid-rock drainage from coal mines have been operating since the mid-1980s. Large systems at metal mines are being contemplated. A typical man-made passive-treatment-system can mimic a natural wetland by employing the same geochemical principles. Passive-treatment systems, however, are engineered to optimize the biogeochemical processes occurring in a natural wetland ecosystem. The passive-treatment methodology holds promise over chemical neutralization because large volumes of sludge are not generated. Metals may be precipitated as oxides, sulfides or carbonates in the passive-treatment system substrate. The key goal of a passive-treatment system is the long-term immobilization of metals in the substrate materials. The passive-treatment technique may not be applicable in all mine-drainage situations. -from Author |
|
| |
Address |
Knight-Piesold & Co, 1050 17th St., Suite 500, Denver, CO, 80265- 0550, USA |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Passive-treatment of acid rock drainage: what is the potential bottom line?; (1121863); 95k-12693; Using Smart Source Parsing pp; Geobase |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17638 |
Serial |
365 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Michaud, L.H. |
|
| |
Title |
Recent technology related to the treatment of acid drainage |
Type |
Journal Article |
| |
Year |
1994 |
Publication |
Earth and Mineral Sciences |
Abbreviated Journal |
|
|
| |
Volume |
63 |
Issue |
3 |
Pages |
53-55 |
|
| |
Keywords |
acid mine drainage coal mine remediation passive treatment 3 Geology |
|
| |
Abstract |
The generation of acid mine drainage is a serious environmental problem associated with coal mining. The chemistry of acid mine drainage is outlined. The prevention and minimization of acid mine drainage formation is examined. The in situ inhibition and remediation of acid mine drainage is described. Methods for the passive treatment of acid mine drainage after formation are discussed. The design of treatment systems is considered. -P.M.Taylor |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Recent technology related to the treatment of acid drainage; (1131431); 95k-15099; Using Smart Source Parsing 95. pp; Geobase |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17562 |
Serial |
300 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Eger, P. |
|
| |
Title |
Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes |
Type |
Journal Article |
| |
Year |
1994 |
Publication |
Water Sci. Technol. |
Abbreviated Journal |
|
|
| |
Volume |
29 |
Issue |
4 |
Pages |
249-256 |
|
| |
Keywords |
copper cobalt nickel zinc ion exchange sulfate reduction adsorption acid mine drainage passive treatment |
|
| |
Abstract |
When designing wetland treatment systems for trace metal removal, both aerobic and anaerobic processes can be incorporated into the final design. Aerobic processes such as adsorption and ion exchange can successfully treat neutral drainage in overlandflow systems. Acid drainage can be treated in anaerobic systems as a result of sulfate reduction processes which neutralize pH and precipitate metals.Test work on both aerobic and anaerobic systems has been conducted in Minnesota. For the past three years, overland flow test systems have successfully removed copper, cobalt, nickel and zinc from neutral mine drainage. Nickel, which is the major contaminant, has been reduced around 90 percent from 2 mg/L to 0.2 mg/L. A sulfate reduction system has successfully treated acid mine drainage for two years, increasing pH from 5 to over 7 and reducing concentrations of all metals by over 90 percent.Important factors to consider when designing wetlands to remove trace metals include not only the type of wetlandrequired but also the size of the system and the residence time needed to achieve the water quality standards. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0273-1223 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes; Isi:A1994nv30000032; AMD ISI | Wolkersdorfer |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17336 |
Serial |
394 |
|
| Permanent link to this record |
