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Content available remote Chemical and microbiological assessment of fatty residues for farming purposes
Latała A., Wierzba S., Farbiszewska T., Polaczek B.
Polish Journal of Chemical Technology
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2005
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Vol. 7, nr 2
28-30
EN
The present study was aimed to make a chemical and microbiological assessment of fatty residues from the municipal and industrial liquid waste purification unit of the Odra Fat-Processing Plant of Brzeg, Poland. The assessment was made towards the land use of the residues. Microbiological tests embraced a quantitative and qualitative analysis of the residues; chemical tests were aimed at marking the contents of fatty substances, macroelements and heavy metals. The fatty residues from the present study were of a potentially high fertilizing quality as they contained considerable amounts of organic carbon, nitrogen, phosphorous and magnesium. The content of heavy metals did not exceed the maximum allowed values for the residues to be used in farming. There were two factors which inhibited the possibility of the ready use of the residues in farming: a high coli count and a 30% content of fatty substances. A significant number of lipolytical bacteria in the count of bacteria isolated from the waste, creates favourable conditions for their biodegradation by the composting method.
2
Content available remote Biodegradation of post-refining waste and assessment of fertilizing capability of its compost
Latała A., Wierzba S., Polaczek B., Farbiszewska T.
Polish Journal of Chemical Technology
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2005
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Vol. 7, nr 2
22-27
EN
This study was aimed at the utilization of the post-refining waste with the use of a bacterial biopreparation. Next, the fertilizing capability of the so obtained compost was assessed. The postrefining waste in the form of the oily bleaching soil (OBS) with a ca 15% content of fatty substances was taken from the Odra Fat-Processing Plant in Brzeg, Poland. The study was carried out on site, in experimental piles, and lasted for 2 months. In addition to the OBS, the composting masses contained: brown coal, peat, straw, sawdust. The biopreparation contained strains of lypolitical bacteria isolated from the waste, as well as taken from own collection, mainly of the Bacillus and Pseudomonas genera. The effects of the fertilizing action of the biopreparation were assessed on the basis of microbiological and chemical analyses, such as the total bacteria count, fatty substance content, micro- and macroelements content, and heavy-metal content. The introduction of the microbiological composite and the addition of organic components had a favourable effect on the bacteria count during the OSB biodegradation process. This resulted in the reduction of fatty substance content reaching almost 80%. The heavy-metal content in the composite did not exceed the maximum allowed values. Moreover, it was characterized by high calcium and magnesium contents, and low nitrogen content in relation to phosphorus and potassium.
3
Content available remote Biokompozyt do degradacji odpadów organicznych
Latała A., Wierzba S., Fabiszewska T., Polaczek B., Boniewska E
Inżynieria Ekologiczna
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2005
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Nr 11
216--217
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