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Warianty tytułu
Importance of the bacteria of the natural sulfur cycle to cadmium removal from wastewater
Języki publikacji
Abstrakty
Omówiono możliwości wykorzystania wybranych bakterii naturalnego obiegu siarki do usuwania kadmu i siarczków ze ścieków oraz redukcji siarczanów. Badania zrealizowano w dwóch etapach, wykorzystując ścieki syntetyczne. Pierwszy etap przebiegał w warunkach beztlenowych, natomiast drugi w warunkach tlenowych. Podczas desulfurykacji użyto bakterie z rodzaju Desulfovibrio, natomiast w procesie tlenowym bakterie Acidithiobacillus ferrooxidans. Wykazano, że pierwszy etap spowodował całkowite usunięcie kadmu ze ścieków oraz obniżenie zawartości siarczanów o 53÷86%, w zależności od warunków procesu. Procesy tlenowe umożliwiły prawie 100% usunięcie siarczków.
The aim of the study was to highlight two potential uses of selected bacteria of the natural sulfur cycle: the removal of cadmium and sulfides from wastewater and the reduction of sulfates. Investigations were carried out in two steps (under anaerobic and aerobic conditions, respectively), with synthetic wastewater as the feed. The desulfurication process involved bacteria of the genus Desulfovibrio sp., while in the aerobic step use was made of Acidithiobacillus ferrooxidans. The anaerobic step of the study brought about a complete removal of cadmium from the wastewater and an approximately 53% to 85% reduction in the concentration of sulfates, depending on the process conditions applied. The aerobic processes accounted for an almost 100% removal of sulfides.
Czasopismo
Rocznik
Tom
Strony
27--31
Opis fizyczny
Bibliogr. 21 poz.
Twórcy
autor
autor
- Akademia Techniczno-Humanistyczna, Instytut Ochrony i Inżynierii Środowiska, ul. Willowa 2, 43-309 Bielsko-Biała, amachnicka@ath.bielsko.pl, kgrubel@ath.bielsko.pl
Bibliografia
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- 8. T. YAMAGUCHI, S. YAMAZAKI, S. UEMURA, I. TSENG, A. OHASHI, H. HARADA: Mierobial-ecological signifieance of sulfide precipitation within anaerobie granular sludge revealed by micro-electrodes study. Water Research, 2001, Vol. 35, No. 14, pp. 2411-3417.
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- 12. A. ITO, T. UMITA, J. AIZAWA, T. TAKACH!, K. MORINAGA: Removal of heavy metals from anaerobically digested sewage sludge by a new chemieal method using ferric sulfate. Water Research, 2000, Vol. 34, No. 3, pp. 751-758.
- 13. A.T. LOMBARDł, O. GARCIA: Biologiealleaching of Mn, Al, Zn, Cu and Ti in an anaerobie sewage sludge effectuated by Thiobacillus ferrooxidans and its effect on metal partitioning. Water Research, 2002, Vol. 36, pp. 3193-3202.
- 14. N.R. KRIEG, J.G. HOLT [Eds.]: Bergeys manual of systematic bacteriology. Williams and Williams, Baltimore-London 1984.
- 15. G.G. GEESEY, L. JANG: Interaction between metal ions and capsular polymers. [In:] Metal lons and Bacteria, John Wiley and Sons, New York 1989.
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- 18. L.E. MACASKlE, A.C.R. DEAN, A.K. CHEETHAM, RJ.B. JAKEMAN, AJ. SKARNULIS: Cadmium accumulation by Citrobaeter sp.: the chemical nature of the accumulated metal precipitate and its location on the bacterial cells. Journal Gen. Microbiol., 1987, Vol. 133, pp. 539-544.
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- 20. O. MIZUNO, Y.Y. LI, T. NOIKE: The behavior of sulfate-reducing bacteria in acidogenic phase of anaerobic digestion. Water Research, 1998, Vol. 32, pp. 1626-1634.
- 21. T. JONG, D.L. PARRY: Removal of sulfate and heavy metais by sulfate reducing bacteria in short-term bench scale upflow anaerobie packed bed reactor runs. Water Research, 2003, Vol. 37, No. 14, pp. 3379-3389.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPOK-0001-0003