ISSN:
1432-0614
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary Microcalorimetrically determined heat production was used as parameter for microbial metabolism to study some aspects of anaerobic digestion. The heat production of sludge samples from a sufficiently active anaerobic digester is dependent upon the concentration of organic substances and is correlated with dehydrogenase activity. Microcalorimetric measurements were carried out to investigate the metabolisation of added substrates; ΔH-values of 150–270 kJ/M of cellobiose were determined for the digestion of cellobiose. Heat flow during the adaptation of digester sludge to cellobiose showed a dramatic change. The action of heavy metals on the microcalorimetrically determined metabolic activity of sludge samples was tested and we show that the addition of heavy metals, in concentrations often detected in waste water treatment, reduced the heat flow by up to 75%.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00499494
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