The influence of flotation reagents on sulfur-oxidizing bacteria Acidithiobacillus thiooxidans

• Autorzy: Pacholewska M. , Cwalina B. , Steindor K.

Warianty tytułu

PL

Wpływ odczynników flotacyjnych na utleniające siarkę bakterie Acidithiobacillus thiooxidans

• Języki publikacji: EN

Abstrakty

EN

It has been demonstrated that various flotation reagents influence, in a different manner, the metabolic activity of the sulfur-oxidizing bacteria Acidithiobacillus thiooxidans (strain C1 being isolated from the Fe-Zn tailings water) growing in the Waksman/Joffe (W/J) liquid culture medium that contains thiosulfate as a sole energy source for bacteria growth. The ethyl- and amyl xanthates as well as the frothing reagent stimulated, to a limited extent, the tested C1-bacteria metabolic activity. The very well documented bacterially-influenced acidification of the W/J solution supplemented with the ethylor the amyl xanthates suggests the possibility of these substances effective acid-degradation in the post-industrial environments rich in various flotation reagents, mainly xanthates. Both the activator containing the carbamate ethyl-derivative and the modifier composed of Cu(II)-ions caused a complete inactivation of the A. thiooxidans C1-metabolism. It is suggested that some unexpected chemical reactions may proceed in the tested systems, as a result of interactions between the culture medium components, flotation reagents, their decomposition products, and also the products of bacterial metabolism.

Słowa kluczowe

EN

Acidithiobacillus thiooxidans; metabolic activity; flotation reagents; xanthates; frother; activator; Cu(II)-ions

PL

Acidithiobacillus thiooxidans; aktywność metaboliczna; odczynniki flotacyjne; ksantogeniany; spieniacz; aktywator; jony Cu(II)

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2008
• Tom: Vol. 42
• Strony: 37--46
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Pacholewska M.

autor

Cwalina B.

autor

Steindor K.

• Department of Metallurgy, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland,

Bibliografia

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• WAKSMAN S.A., JOFFE J.S.: Microorganisms concerned in the oxidation of sulfur in the soil. II. Thio-bacillus thiooxidans, a new sulfur oxidizing organism isolated from the soil. Journal of Bacteriology, 1922, 7: 239-256.
• ZHONGXI S., FORSLING W.: The degradation kinetics of ethyl-xanthate as a function of pH in aqueous solution. Mineral Engineering, 1999, 10 (4), 389-400.