Subtitle:

The synthesis of polyhydroxyalkanoates by activated sludge

Publisher:

Committee on Biotechnology PAS ; Institute of Bioorganic Chemistry PAS

Description:

III Kongres Biotechnologii

Abstract:

Polyhydroxyalkanoates are polyesters insoluble in water, synthesized by microorganisms and accumulated intracellular as storage materials. They are marked by high degree of polimerization, non-toxicity, wide range of application and biodegrability. Until now, there have been applied mainly pure microbial cultures for industrial PHAs production. Currently, for that purpose there are conducted intensive investigations on use of mixed microbial cultures (activated sludge). The microorganisms of activated sludge accumulate polyhydroxyalkanoates as storage materials when availability of organics as electron donors and oxygen or nitrate (electron acceptors) is distributed in time and space or when the sludge is submitted to consecutive periods of external substrate accessibility and unavailability. The process efficiency depends on feed composition and reactor operating conditions. Nowadays, there are two types of reactor operational strategies. In municipal wastewater treatment plants, a two-stage process is used; 1° - selection of excess sludge to specific type of substrate (molesses, whey) in SBR, and 2° - PHAs production in batch reactor. In waste- water treatment plants from agricultural and food industry, acidogenic fermentation is introduced as an additional stage, where the organic wastes are converted into a mixture of organic acids, and then used as a substrate for PHAs storage.

Relation:

Biotechnologia, vol.82, 3 (2008)-.

Volume:

82

Issue:

3

Start page:

9

End page:

27

Detailed Resource Type:

Article

Format:

application/pdf

Resource Identifier:

0860-7796 ; oai:rcin.org.pl:73356 ; IChB B-77

Source:

Library of Institute of Bioorganic Chemistry PAS

Language:

pol

Language of abstract:

eng

Temporal coverage:

1988-2010

Rights:

Creative Commons Attribution BY-SA 4.0 license

Terms of use:

Copyright-protected material. [CC BY-SA 4.0] May be used within the scope specified in Creative Commons Attribution BY-SA 4.0 license, full text available at:

Digitizing institution:

Institute of Bioorganic Chemistry of the Polish Academy of Science

Original in:

Institute of Bioorganic Chemistry of the Polish Academy of Science

Projects co-financed by:

Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.

Access:

Open