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1

Anaerobic digestion of municipal wastewater with biocatlytic addition

100%
Olanczuk-Neyman K., Prejzner J., Czerwionka K., Bray R.
Biotechnologia
|
1995
|
issue 1
176-191
EN
The results of laboratory and field investigations concerning the influence of biocatalytic additions on anaerobic digestion of wastewater in septic tanks are presented.Commercially prepared bacterial cultures (Bio-7, Digest) and mixtures of bacterial cultures with enzymes (Bioenzyclar, Enzybac) were applied.It was concluded that biocatlytic additions to septic tanks influenced the secondary chemical and bacteriological pollution of the mixed loquor over the primary sludge.The particular commercial biocatalysts did not improve the odour of wastewater.The effluent from septic tanks with biocatalytic additions did not meet the standards for wastewater to be drained off the soil or to natural waters.
2

Granulation of biomass in continuous anaerobic digestion

100%
Wieczorek A., Michalska H.
Biotechnologia
|
1993
|
issue 4
155-162
EN
The development of granular sludge in the UASB reactor was investigated in bench scale (6,48 dm3).The different substrate loading rates were used during experiment.A synthetic medium based on volatile fatty acid was used. digested sewage sludge from distillery wastewater treatment plant was used as a seed. The granules of ca. 0.5 mm diameter had developed after about 120 days of operation.The setlling rate of these granules was 20-50 m\h.
3

Fermentation in waste menagement in agriculture

88%
Ledakowicz S., Krzystek L.
Biotechnologia
|
2005
|
issue 3
165-183
EN
The generation of agriculture residues and agro-industrial wastes has recently grown considerably, which has caused a variety of environmental problems. In this paper, the characteristics of agricultural and agro-industrial waste are discussed. Also, the most important biological treatment technologies and strategies for waste management are presented. Special attention is given to energy production by anaerobic digestion of these wastes. Few examples of energy recovery from agricultural wastes are presented as well.
4

ADM1 model of methane fermention

88%
Szewczyk K. W.
|
2007
|
issue 4
7-24
EN
The generalized anaerobic digestion model developed by the Task Group of IWA is discussed. The structured model includes multiple steps describing biochemical as well as physico-chemical processes. The biochemical steps include disintegration of a particulate substrate to carbohydrates, proteins and lipids, extracellular hydrolysis of these particulate biopolymers to sugars, amino acids, and long chain fatty acids, respectively, acidogenesis from sugars and amino acids to volatile fatty acids and hydrogen; acetogenesis of long chain - and volatile fatty acids to acetate , and separate methanogenesis steps from acetate and from hydrogen and carbon dioxide. The ADM1 is a powerful tool for predicting both steady state and dynamic behaviour of anaerobic digesters. The extensions and applications of the ADM1 model to simulate industrial scale anaerobic digestion processes are reviewed.
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