| Records |
| Author |
Turek, M.; Gonet, M. |
| Title |
Nanofiltration in the utilization of coal-mine brines |
Type |
Journal Article |
| Year |
1997 |
Publication |
Desalination |
Abbreviated Journal |
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| Volume |
108 |
Issue |
1-3 |
Pages  |
171-177 |
| Keywords |
Entsalzung Entsalzungsanlage Umkehrosmose Membran Kohlenbergwerk Natriumchlorid Abwasser Verdampfung Energieverbrauch Nanofiltration mine water treatment |
| Abstract |
The utilization of saline coal mine waters is considered to be the most adequate method of solving ecological problems caused by this kind of water in Poland. In the case of most concentrated waters, the so-called coalmine brines, the method of concentrating by evaporation in a twelve-stage expansion installation or vapour compression is applied, after which sodium chloride is manufactured. A considerable restriction in the utilization of coal mine brines is the high energy consumption in these methods of evaporation. An obstacle in the application of low energy evaporation processes, e.g. multi-stage flash, is the high concentration of calcium and sulfate ions in the coal mine brines. The present paper deals with the application of nanofiltration in the pretreatment of the brine. The application of nanofiltration membranes with an adequate pore size, including charged membranes, makes it possible to decrease the concentration of divalent ions in the permeate practically without any changes in the concentration of sodium chloride. Then the permeate may be concentrated in a multi-stage evaporation process, e.g. MSF, without any risk of the crystallization of gypsum. A combination of NF and MSF ought to set down the unit costs of the concentration of coal mine brines below those of mere evaporation. |
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| ISSN |
0011-9164 |
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| Notes |
Feb; Nanofiltration in the utilization of coal-mine brines; Wos:A1997wk45600023; Times Cited: 1; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/8724.pdf; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 8724 |
Serial |
29 |
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| Author |
Skousen, J.G. |
| Title |
An Evaluation Of Acid-Mine Drainage Treatment Systems And Costs |
Type |
Journal Article |
| Year |
1991 |
Publication |
Environmental Management for the 1990s |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
173-178 |
| Keywords |
mine water treatment |
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An Evaluation Of Acid-Mine Drainage Treatment Systems And Costs; Isip:A1991bs89e00024; Times Cited: 0; ISI Web of Science |
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no |
| Call Number |
CBU @ c.wolke @ 9041 |
Serial |
148 |
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| Author |
Gerth, A.; Kießig, G. |
| Title |
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Type |
Book Whole |
| Year |
2001 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
173-180 |
| Keywords |
mining uranium mining passive treatment Saxony mine water treatment |
| Abstract |
Treatment of radioactively-contaminated and metal-laden mine waters and of seepage fiom tailings ponds and waste rock piles is among the key issues facing WISMUT GmbH in their task to remediate the legacy of uranium mining and processing in the Free States of saxony and rhuringia, Federal Republic of Germany. Generally, contaminant loads of feed waters wn aimnisn over time. At a certain level of costs for the removal of one contaminant unit, continued operation of conventional water treatment plants can hardly be justified any longer. As treatment is still required for water protection, there is an urgent need for-the development and implementation of more cost efficient technologies. WISMUT GmbH and BioPlanta GmbH have studied the suitability of helophye species for contaminant removal from mine waters. In a fust step, original waters were used for an in vitro bioassay. The test results allowed for the determination of the effects of biotic and abiotic factors on helophy'tes'tolerancer ange, growth, and uptake capability of radionuclides and metals. Test series were carried out using Phiagmites australis, Carex disticha, Typha latifolia, and Juncus effusus. Relevant cont-aminant components of the mine waters under investigation included uraniunl iron, arsenic, manganese, nickel, and copper. Investigations led to a number of recommendations conceming plant selection for specific water treatment needs. In a second step, based on these results, a constructed wetland was built in l99g as a pilot plant for the treatment of flood waters liom the pöhla-Tellerhäuser mine and went on-line. Relevant constituents of the neutral flood waters include radium, iron, and arsenic. This wetland specifically uses both physico-chemical and microbiological processes as well as contaminant accumulation by helophytes to achieve the treatment objectives. with the pilot plant in operation for three years now, average removal rates achieved are 95 Yo for kon, 86 yo for arsenic, and 75 % for raäium. WISMUT GmbH intends to put a number of other projects of passive/biological mine water treatment into operation before the end of 2001_ |
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Battelle Press |
Place of Publication |
(6)5 |
Editor |
Leeson, A. |
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Phytoremediation, wetlands and sediments |
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1-57477-115-9 |
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| Notes |
Passive/Biological Treatment of Waters contaminated by Uranium Mining; 2; VORHANDEN | AMD ISI | Wolkersdorfer; als Datei vorhanden 4 Abb., 4 Tab. |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17345 |
Serial |
372 |
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| Author |
Gatzweiler, R. |
| Title |
Cover design for radioactive and AMD-producing mine waste in the Ronneburg area, Eastern Thuringia |
Type |
Journal Article |
| Year |
2001 |
Publication |
Waste Management |
Abbreviated Journal |
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| Volume |
21 |
Issue |
2 |
Pages |
175-184 |
| Keywords |
mine water treatment |
| Abstract |
At the former uranium mining site of Ronneburg, large scale underground and open pit mining for nearly 40 years resulted in a production of about 113 000 tonnes of uranium and about 200 million cubic metres of mine waste. In their present state, these materials cause risks to human health and strong environmental impacts and therefore demand remedial action. The remediation options available are relocation of mine spoil into the open pit and on site remediation by landscaping/contouring, placement of a cover and revegetation. A suitable vegetated cover system combined with a surface water drainage system provides long-term stability against erosion and reduces acid generation thereby meeting the main remediation objectives which are long-term reduction of radiological exposure and contaminant emissions and recultivation. The design of the cover system includes the evaluation of geotechnical, radiological, hydrological, geochemical and ecological criteria and models. The optimized overall model for the cover system has to comply with general conditions as, e.g. economic efficiency, public acceptance and sustainability. Most critical elements for the long-term performance of the cover system designed for the Beerwalde dump are the barrier system and its long-term integrity and a largely self-sustainable vegetation. (C) 2001 Elsevier Science Ltd. All rights reserved. |
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| Notes |
Cover design for radioactive and AMD-producing mine waste in the Ronneburg area, Eastern Thuringia; Wos:000166676900008; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17047 |
Serial |
127 |
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| Author |
Sierra-Alvarez, R. |
| Title |
Biological treatment of heavy metals in acid mine drainage using sulfate reducing bioreactors |
Type |
Journal Article |
| Year |
2006 |
Publication |
Water Sci. Technol. |
Abbreviated Journal |
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| Volume |
54 |
Issue |
2 |
Pages |
179-185 |
| Keywords |
mine water treatment |
| Abstract |
The uncontrolled release of acid mine drainage (AMD) from abandoned mines and tailing piles threatens water resources in many sites worldwide. AMD introduces elevated concentrations of sulfate ions and dissolved heavy metals as well as high acidity levels to groundwater and receiving surface water. Anaerobic biological processes relying on the activity of sulfate reducing bacteria are being considered for the treatment of AMD and other heavy metal containing effluents. Biogenic sulfides form insoluble complexes with heavy metals resulting in their precipitation. The objective of this study was to investigate the remediation of AMD in sulfate reducing bioreactors inoculated with anaerobic granular sludge and fed V with an influent containing ethanol. Biological treatment of an acidic (pH 4.0) synthetic AMD containing high concentrations of heavy metals (100 Mg Cu2+vertical bar(-1); 10 mg Ni2+vertical bar(-1), 10 mg Zn2+vertical bar(-1)) increased the effluent pH level to 7.0-7.2 and resulted in metal removal efficiencies exceeding 99.2%. The highest metal precipitation Cn rates attained for Cu, Ni and Zn averaged 92.5, 14.6 and 15.8 mg metal l(-1) of reactor d(-1). The results of this work demonstrate that an ethanol-fed sulfidogenic reactor was highly effective to remove heavy metal contamination and neutralized the acidity of the synthetic wastewater. |
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Biological treatment of heavy metals in acid mine drainage using sulfate reducing bioreactors; Wos:000240449300024; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16943 |
Serial |
106 |
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