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1

Dissimilatory sulfate reduction in media containing common metal ions

100%
Szymanska K., Domka F.
Polish Journal of Environmental Studies
|
1996
|
tom 05
|
nr 5
This paper reports the results of an investigation of the effect of Zn2+, Mg2+, Cu2+, Ni2+, Fe2+, Fe3+, Mn2+ and Cr3+ ions present in the media on the kinetics of dissimilatory reduction of sulfates in Desulfotomaculum ruminis bacteria. It has been shown that the range of the optimum concentration of studied elements is different; sometimes very wide but sometimes very narrow. After a certain threshold concentration of a given element has been reached, its presence either causes total inhibition of the process or has a toxic effect.
2

The effect of heavy metal ions on the process of dissimilative reduction of sulfates

72%
Domka F., Seifert K.
Polish Journal of Environmental Studies
|
1995
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tom 04
|
nr 4
The effect of a concentration of heavy metal ions (Pb2+, Cd2+, Hg2 + and Zn2+) on the process of dissimilative reduction of sulfates in medium containing active Desulphotomaculum ruminis bacteria was studied. Both tolerable and toxic concentrations of the mentioned ions were determined. According to the degree of their toxicity the following ion sequence was established: Cd2 + > Zn2+ > Hg2+ > Pb2+, but only the presence of mercury ions caused death of the bacteria.
3

Selected problems related to the toxic effect of mineral salts in the aspect of environmental protection

72%
Szymanska K., Domka F.
Polish Journal of Environmental Studies
|
1997
|
tom 06
|
nr 1
This paper reports the effect of increasing concentrations of the salts Li+, K+, Al3ł, Hg2+, Cd2+, Cr3+ on the kinetics of desulfurication in Desulfotomaculum ruminis bacteria. The ranges of concentration of these salts which do not disturb the desulfurication, inhibit this process and prevent it from occurring have been established.
4

The influence of DDDM on denitrification and desulfurication processes

72%
Brycki B., Szymanska K., Seifert K., Domka F.
Polish Journal of Environmental Studies
|
1997
|
tom 06
|
nr 4
The influence of didecyldimethylammonium chloride (DDDM) on the processes of denitrification - occurring with a contribution of Bacillus licheniformis bacteria, and desulfurication - with a contribution of Desulfotomaculum ruminis bacteria, was studied. It has been shown in laboratory conditions that the compound tested is not assimilable by the cultures of the above mentioned heterotrophic bacteria and the values of toxic concentrations of DDDM for the studied microorganisms were determined.
5

Catabolic activity of bacteria from Bacillus and Desulfotomaculum genera in biodegradation of starch and starch-modified foil

72%
Seifert K., Szymanska K., Wawrzak D., Domka F.
Ekologia i Technika
|
2005
|
tom 13
|
nr 2
6

Formation of metal sulfides in the process of dissimilative reduction of sulfates

72%
Domka F., Domagala Z.
Polish Journal of Environmental Studies
|
1996
|
tom 05
|
nr 1
This paper presents studies on the effects of manganese, barium, zinc, aluminium and copper ions on the rate of biological sulfates reduction by Desulfotomaculum ruminis bacteria. We determinated the concentrations of these ions which totally inhibited the process. The anions we studied can be arranged according to increasing poisonous properties: Mn2+
7

The effect of oxidizing biocides on desulfurication and denitrification processes

58%
Brycki B., Seifert K., Szymanska K., Domka F.
Polish Journal of Environmental Studies
|
2000
|
tom 09
|
nr 5
363-367
The effect of oxidising microbiocides (DCDMH and BCDMH) on the activity of bacteria in the processes of denitrification (Bacillus licheniformis) and desulfurication (Desulfotomaculum ruminis) is studied. Desulfotomaculum ruminis bacteria have been found more resistant than the Bacillus licheniformis bacteria to the inhibiting effect of active halogen released from the studied halogenodimethylhydantoines. The study has shown that the compounds tested can be used as a safe source of slowly released halogen for disinfection purposes.
8

The use of molasses in the process of desulfurication

58%
Waligorska M., Domka F., Chermula K.
Polish Journal of Environmental Studies
|
2000
|
tom 09
|
nr 6
463-469
It was found that at 0.6 and 1% vol, of molasses, the reduction of sulphates occurred at the level of 0.7 g [S-SO42-], while at its concentration 2 and 5% vol., the maximum amount of the reduced sulphates increased to 0.826 and 1.256 g [S-SO42-], respectively, which corresponds to 60 and 92% of sulphate conversion. A decrease in COD varied from 32 to 40%, and was the greatest for the medium with 5% vol. of molasses. The results indicate that molasses, likewise some municipal waste, can be used as an alternative source of carbon acting as electron donor in reduction of sulphates to sulphides.
9

The effect of MMPP on the microbiological processes related to conversion of nitrogen and sulphur

58%
Brycki B., Szymanska K., Waligorska M., Seifert K., Domka F.
Polish Journal of Environmental Studies
|
1998
|
tom 07
|
nr 2
These studies concern the effect of the concentration of MMPP (magnesium monoperoxyphtalate), a compound used (among others) in hygiene products (Lonzabac-MP) on the kinetics of microbiological processes involving the following species of bacteria: Bacillus licheniformis (denitrification), Desulfotomaculum ruminis (desulfurication) and Thiobacillus ferrooxidans (oxidation of iron II ions and reduced sulphur compounds). Results enabled determination of the microbiological activity of MMPP and the limits of its admissible and toxic (inhibiting transformation cycles of sulphur and nitrogen) concentrations.
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