If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Effect of simultaneous biodegradation of multiple substrates on the extant biodegradation kinetics of individual substrates

$30.00 plus tax (Refund Policy)

Buy Article:

Abstract:

A respirometric technique was developed to quantify the extant kinetics for biodegradation of an organic compound by biomass that is simultaneously degrading a complex mixture of substrates. The technique uses a fed-batch feed to supply the mixture of substrates at a rate consistent with the organic loading on the completely mixed activated sludge (CMAS) bioreactor from which the biomass was obtained. The results were compared to results from a batch test wherein the target compound served as the sole carbon and energy source. Results from the fed-batch technique showed that simultaneous biodegradation of multiple substrates caused an increased ability for the removal of the target compound, phenol, although the increase was relatively small. A 7 to 12% increase in the maximum specific growth rate was observed for biomass receiving a fed-batch feed at a rate of one to three times the specific mass flow rate to the CMAS system. An increase in the fed-batch feed rate to six times the CMAS rate caused a decrease from the maximum enhancement, which was observed at the threefold rate, indicating that there was an upper limit on the stimulatory effect. Less extensive studies with acrylamide, 4-chlorophenol, ethylene glycol, and m-toluate gave similar results. Because the effects of simultaneous substrate biodegradation were small, single-substrate extant kinetic tests should be adequate for describing the capabilities of a biomass for degrading a particular substrate in a multisubstrate environment.

Keywords: ACTIVATED SLUDGE; BIODEGRADATION; FED-BATCH; INHIBITION; KINETICS; MULTIPLE SUBSTRATES; PHENOL; RESPIROMETRY

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143098X126865

Publication date: January 1, 1998

More about this publication?
  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • WEF Bookstore
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more