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Author |
Nakazawa, H. |
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Title |
Treatment of acid mine drainage containing iron ions and arsenic for utilization of the sludge |
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Journal Article |
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2006 |
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Sohn International Symposium Advanced Processing of Metals and Materials, Vol 9 |
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373-381 |
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mine water treatment arsenic biotechnology filtration iron membranes microorganisms mining industry oxidation sludge treatment acid mine drainage arsenic ion sludge treatment Horobetsu mine Hokkaido Japan ferrous iron membrane filter pore size arsenite solutions microbial oxidation As Fe Manufacturing and Production |
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Abstract |
An acid mine drainage in abandoned Horobetsu mine in Hokkaido, Japan, contains arsenic and iron ions; total arsenic ca.10ppm, As(III) ca. 8.5ppm, total iron 379ppm, ferrous iron 266ppm, pH1.8. Arsenic occurs mostly as arsenite (As (III)) or arsenate (As (V)) in natural water. As(III) is more difficult to be remove than As(V), and it is necessary to oxidize As(III) to As(V) for effective removal. 5mL of the mine drainage or its filtrate through the membrane filter (pore size 0.45 mu m) were added to arsenite solutions (pH1.8) with the concentration of 5ppm. After the incubation of 30 days, As(III) was oxidized completely with the addition of the mine drainage while the oxidation did not occur with the addition of filtrate, indicating the microbial oxidation of As(III). In this paper, we have investigated the microbial oxidation of As(III) in acid water below pH2.0. |
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0-87339-642-1 |
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Aug 27-31; Treatment of acid mine drainage containing iron ions and arsenic for utilization of the sludge; Isip:000241817200032; Conference Paper Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17456 |
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151 |
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Rees, B.; Bowell, R.; Dey, M.; Williams, K. |
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Title |
Passive treatment; a walk away solution? |
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Journal Article |
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2001 |
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Mining Environmental Management |
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9 |
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2 |
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7-8 |
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acid mine drainage; acidification; alkalinity; bacteria; bioremediation; buffers; chemical reactions; cost; effluents; ferric iron; ferrous iron; filtration; ground water; hydrolysis; iron; metals; monitoring; oxidation; permeability; pH; pollution; remediation; substrates; sulfate ion; suspended materials; water management; water pollution; water quality; water treatment; wetlands 22, Environmental geology |
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0969-4218 |
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Passive treatment; a walk away solution?; 2001-050826; References: 3; illus. United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 5722 |
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265 |
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Turek, M.; Gonet, M. |
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Nanofiltration in the utilization of coal-mine brines |
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Journal Article |
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1997 |
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Desalination |
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108 |
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1-3 |
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171-177 |
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Entsalzung Entsalzungsanlage Umkehrosmose Membran Kohlenbergwerk Natriumchlorid Abwasser Verdampfung Energieverbrauch Nanofiltration mine water treatment |
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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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0011-9164 |
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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 |
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CBU @ c.wolke @ 8724 |
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29 |
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Author |
Eriksson, P.K.; Lien, L.A.; Green, D.H.; Kyburz, M. |
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Title |
Nanofiltration für die Aufkonzentrierung von Kupfersulfat von Auslaugewässern und die Rückgewinnung von Schwefelsäure |
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Conference Article |
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1997 |
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6. Aachener Membran Kolloquium, Preprints, Aachen, DE, 3. 5. Mar, 1997 |
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113-121 |
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Abwasserbehandlung Abraum Auslaugen=Mineralogie Ausfällung Membranfilter Adsorption Biomasse Konzentration Kupfer Porenweite Querströmung Schwermetalle Soda Investitionskosten Betriebskosten Kolonne=Apparat Pilotanlage Schwefelsäure Wiederverwertung Metallsalz Nanofiltration Kupfermine Biomassekolonne Entkrustungsmittel |
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In einem US-amerikanischen Minenbetrieb fallen bei der Auslaugung von Abraum zur Gewinnung von Restkupfer Abwässer an, die höhere Konzentrationen aufweisen als für Abwässer erlaubt ist. Eine bislang angewandte chemische Fällung erforderte erhebliche Kosten. Mit der Nanofiltration (NF), verbunden mit einer Biomasse-Adsorptionsstufe, erhält man ein weniger problematisches Abwasser, das direkt eingeleitet werden darf. Dieses Wasser kann im Betrieb sogar als Frischwasser dort eingesetzt werden, wo höhere Anteile an Silikaten toleriert werden können. Ein weiterer Vorteil der NF-Technik ist die Aufkonzentration der Metallsalze und die Rückgewinnung von Schwefelsäure. Kupfer liegt z.B. nach der ersten Stufe in solcher Konzentration vor, daß die Extraktionskapazität der existierenden Anlage stark erhöht wird. Die Nanofiltration ist ein Membranprozeß, bei dem Membranen mit Porengrößen von ca. 1 nm eingesetzt werden. Die Porengröße ist kleiner als bei Ultrafiltrationsverfahren und nur wenig größer als bei Umkehrosmosemembranen. Gearbeitet wird mit dem Prinzip der Queranströmung (Crossflow). Zur Entfernung der relativ geringen Anteile an Schwermetallen wird zusätzlich eine Biomasse-Kolonne eingesetzt. Beschrieben wird der Aufbau bzw. das Fließschema einer Pilotanlage. Untersuchungen mit dieser Anlage bestätigten die Wirksamkeit der NF- Abwasserbehandlung mit anschließender Adsorption an Biomasse. Die zugeführten Chemikalien bestehen lediglich aus relativ harmlosen Stoffen wie Entkrustungsmittel und Soda. Das Entkrustungsmittel wird benötigt, um Ablagerungen von Anorganika auf den Membranen zu verhindern. Das Soda neutralisiert das aufbereitete Wasser. Beide Chemikalien verhalten sich im Prozeß ansonsten neutral. Hauptsächliche Ausgaben entstehen für Kapitalkosten. Betriebskosten entstehen für den Membranersatz und die Energie. Die Versuchsresultate und Erkenntnisse aus den Versuchen konnten weitgehend für die Auslegung einer NF-Anlage in einer Kupfermine in Mexiko übernommen werden, die im Frühjahr 1997 in Betrieb genommen werden soll. |
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Escondido, US; Harrison Western Environ Services, Lakewood, US; Osmonics- Desal, Aarau, CH |
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Nanofiltration für die Aufkonzentrierung von Kupfersulfat von Auslaugewässern und die Rückgewinnung von Schwefelsäure; BERG, Copyright FIZ Technik e.V.; DE Deutsch; Csn=00011; M9705 0920 570; 13759, BERG , 11.06.97; Words: 592; 9 Seiten, 4 Bilder 3PAB *Aufbereitung anorganischer, mineralischer Rohstoffe* 3PH *Trennen fest/flüssig/gasförm. Stoffe, dispers. Stoffsysteme* 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3KEM *Nichteisenmetalle/ legierungen/ gußwerkstoffe* |
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CBU @ c.wolke @ 17600 |
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388 |
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Author |
Benkovics, I.; Csicsák, J.; Csövári, M.; Lendvai, Z.; Molnár, J. |
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Title |
Mine Water Treatment – Anion-exchange and Membrane Process |
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Journal Article |
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1997 |
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Proceedings, 6th International Mine Water Association Congress, Bled, Slovenia |
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1 |
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149-157 |
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Keywords |
uranium mining Hungary Mecsek Ore Mining Company waste water mine water chemistry nano-filtration reverse osmosis pilot plant mine water treatment treatment |
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Mine Water Treatment – Anion-exchange and Membrane Process; 1; FG 6 Abb., 2 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9530 |
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455 |
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