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Bacterial desulphurization of coal

Fecko P., Pectova I., Cablik V., Riedlova S., Ovcari P., Tora B.

Górnictwo i Geoinżynieria

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2006

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R. 30, z. 3/1

47-65

EN

The aim of this paper is to evaluate the suitability of a coal samples from different mines from Poland and Czech Republic for bacterial leaching. Laboratory research used a pure bacterial culture of Thiobacillus ferrooxidans. Were tested the samples from this localities: Mine Marcel, Mine Jankowice, Mine Staszic (Poland) and Mine Darkov and Mine Dukla (Czech Republic). The results showed that bacterial leaching was effective, with one month leaching time, when total desulphurization is from 38% to 72% and desulphurization of pyritic sulphur is from 60% to 82%. The paper describes changes of coal macerates after bacterial leaching.

PL

Celem tego artykułu jest ocena próbek węgla z różnych kopalń Polski i Czech pod kątem ługowania bakteryjnego. W badaniach laboratoryjnych zastosowano czystą kulturę bakterii Thiobacillus ferrooxidans. Testowano próbki z następujących kopalń: "Marcel", "Jankowice", "Staszic" (Polska) oraz "Darkov" i "Dukla" (Czechy). Wyniki badań wykazały, że ługowanie bakteryjne było efektywne w czasie jednego miesiąca, kiedy to ogólne odsiarczanie wzrosło z 38% do 72%, a odsiarczanie siarki pirytowej z 60% do 82%. Artykuł opisuje zmiany węgla po ługowaniu bakteryjnym.

2

Removal of heavy metals from excessive activated sludge

Gąsiorek J. A.

Polish Journal of Chemical Technology

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2002

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Vol. 4, nr 3

8-12

EN

This paper presents the laboratory scale anaerobic treatment results from an acidic autolysis of a waste activated sludge and from a desulfiirication process of this sludge, too. The sludge with high contents of the heavy metals used in the study was derived from the treatment plant at Cze_stochowa. The anaerobic first-stage treatment system includes an acid reactor or a fermentation reactor with the population of the sulfate reducing bacteria e.g. Desulfovibrio desulfuricans respectively. The second stage was carried out on the aerated reactor, which was used to heavy metals extraction during bioleaching of the sludge from the first stage with Thiobacillus ferrooxidans bacteria. The removal yield of the heavy metals are given after each stages of the sludge treatment. The organic sludge after second stage operation can be application within agriculture as its heavy metals content is very low. The liquid product on separation phosphates and the metal hydroxides as the carbon source can be used to enhance the nitrogen and phosphorus removal at the waste water treatment plants. These investigations are part of the recycling project called 1TP (integrated treatment plant) process depending on the integration of the desulfurication to waste water treatment with an activated sludge technology at a treatment plant.

3

Izolowanie bakterii rodzaju thiobacillus ze złoża złotostockiego.

Sadowski Z., Farbiszewska T., Farbiszewska-Bajer J.

Fizykochemiczne Problemy Mineralurgii

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1999

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Vol. 33

191-199

PL

W artykule przedstawiono wyniki izolacji bakterii thiobacillus ferrooxidans i thiobacillus thiooxidans z wód i ze zwałowisk odpadów poeksploatacyjnych okręgu złotostockiego. Wizolowano po pięć szczepów każdego typu a po oznaczniu ich aktywności życiowej, wyselekcjonowano po trzy najaktywniejsze do dalszych badań. Szczepy F2-98, F4-98 i F5-98 wykazywały silne obniżenie pH zawiesiny hodowlanej podczas 20 godzinnego okresu wzrostu. Szczep F4-98 cechowała najwyższa kinetyka utleniania jonów Fe2+ do Fe3+.

EN

The aim of this work was selected bacteria and study their physiology from mining sources (Zloty Stok deposit). The most frequently isolated species from mining ecosystems are strains of Thiobacillus ferrooxidans and Thiobacillus thiooxidans. A decrease of pH during T.ferrooxidans growth was obsd. for F2-98, F4-98 and F5-98 strains. The highest growth rate of bacteria was obtained for T. ferrooxidans F4-98.