Show simple item record
dc.contributor.author |
Komers, Karel
|
|
dc.date.accessioned |
2009-03-12T16:12:38Z |
|
dc.date.available |
2009-03-12T16:12:38Z |
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dc.date.issued |
2000 |
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dc.identifier |
Univerzitní knihovna (studovna) |
cze |
dc.identifier.issn |
1211-5541 |
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dc.identifier.uri |
http://hdl.handle.net/10195/32752 |
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dc.description.abstract |
In a batch stirred isothermal reactor the biochemical reaction has been studied of water solution of 2-naphthol (BN) and activated sludge (AS) adapted to BN at aerobic conditions in the BN concentration range S(0) = 0.5 - 2 mmol dm -3, AS concentration range (wxpressed as the weight of dry biomass in the unit of the reaction volume) X0 = 0.1 - 4 g dm -3 and temperature range 11 - 40 °C. The decomposition of BN in the reaction mixture can be described as a reaction of zero order in BN and probably 1st order in AS if the ratio of initial concentrations p = X0/S0 is greater than 0.6 g AS per mmol BN. At lower p values the reaction order in BN fluctuated between 0 and 2. The concentration of AS was practically constant during every experiment, the concentration of oxygen dissolved in the raction mixture decreased by a reaction of zero order. In addition to the decomposition of BN a red dinaphthol derivative is formed as a side product. Its concentration increases at higher temperature and smaller p. The rate constant of the BN decomposition increased from k=0.23 at 11°C to k = 0.68 mmol S g-1 Xh-1 at 30°C. In this temperature interval the Arrhenius equation between k and temperature is fulfilled. The temperature above 40°C denaturates AS and stops the decomposition of BN. |
eng |
dc.format |
p. 45-55 |
cze |
dc.language.iso |
eng |
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dc.publisher |
Univerzita Pardubice |
cze |
dc.relation.ispartof |
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 6 (2000) |
eng |
dc.rights |
open access |
eng |
dc.subject |
biochemické reakce |
cze |
dc.subject |
aktivované kaly |
cze |
dc.subject |
2-naftol |
cze |
dc.title |
Reaction of 2-naphthol with activated sludge |
eng |
dc.type |
article |
cze |
dc.identifier.signature |
47333 |
|
dc.peerreviewed |
yes |
eng |
dc.publicationstatus |
published |
eng |
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