Topic
Bioreactor
About: Bioreactor is a research topic. Over the lifetime, 9980 publications have been published within this topic receiving 192690 citations. The topic is also known as: bioreactors.
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TL;DR: In order to understand the bioreactor operation, cellular metabolism must be considered together with the flow profile and the mass transfer characteristics of theBioreactor.
Abstract: Analysis of bioreactors is central for successful design and operation of biotechnical processes. The bioreactor should provide optimum conditions, with respect to temperature, pH and substrate condition, for example, besides its basic function of containment. The ability to control the substrate concentration is an important function of the bioreactor. The substrate concentration can be subject to spatial variation – advertently or inadvertently – and may also change with time in batch or fed-batch operation. The cellular metabolism will depend on local concentrations in the reactor, as well as on the physiological status of the cell. In order to understand the bioreactor operation, cellular metabolism must be considered together with the flow profile and the mass transfer characteristics of the bioreactor. Some fundamental aspects of bioreactor operation for yeast and bacterial cultivations are discussed in this short review.
76 citations
TL;DR: With the addition of QQB, the operating period of AnMBR-QQB reactor was prolonged by about 8-10 times at constant flux operation before reaching the pre-set maximum transmembrane pressure (TMP) and significant changes of organic functional groups were observed in cake layer from QQB membrane as compared with that from control membrane.
76 citations
TL;DR: The results showed that all reactors had high removal efficiency of ammonium and COD, despite very different fouling conditions, and low fouling at optimum fill ratio may be due to the higher percentage of small molecular size and lower percentage of large molecular size of EPS and SMP in the reactor.
76 citations
TL;DR: The removal of nitrogen and phosphate from the effluent of a sewage treatment plant over a long-term operation in bioreactors packed with different combinations of wood and iron with a trickling filter packed with foam ceramics for nitrification found that the denitrification and phosphate removal rates were higher than those in the bioreactor packed with cedar chips and iron.
Abstract: We investigated the removal of nitrogen and phosphate from the effluent of a sewage treatment plant over a long-term operation in bioreactors packed with different combinations of wood and iron, with a trickling filter packed with foam ceramics for nitrification. The average nitrification rate in the trickling filter was 0.17 kg N/m3∙day and remained at 0.11 kg N/m3∙day even when the water temperature was below 15 °C. The denitrification and phosphate removal rates in the bioreactor packed with aspen wood and iron were higher than those in the bioreactor packed with cedar chips and iron. The bioreactor packed with aspen wood and iron continued to remove nitrate and phosphate for >1200 days of operation. The nitrate removal activity of a biofilm attached to the aspen wood from the bioreactor after 784 days of operation was 0.42 g NO3-N/kg dry weight wood∙ day. There was no increase in the amount of dissolved organic matter in the outflow from the bioreactors.
76 citations
TL;DR: The data suggest that substrate is mainly oxidized and not used for growth purposes which offers the possibility to operate membrane bioreactors with significantly reduced secondary sludge production.
76 citations