4-nitrophenol biodegradation in a sequencing batch reactor: kinetic study and effect of filling time

4-nitrophenol biodegradation in a sequencing batch reactor: kinetic study and effect of filling time Biodegradation kinetics of 4-nitrophenol (4NP) was investigated in a lab-scale sequencing batch reactor fed with the compound as the sole carbon source. The experimental results showed that complete 4NP removal can be easily achieved with acclimatized biomass, even if an inhibition kinetics is observed; furthermore, an improvement in the removal kinetics is obtained if the substrate concentration peak, reached in the reactor at the end of the filling time, is maintained to quite a low value. Both long feed phase and high biomass concentration are effective in reducing the substrate concentration peak and then improving the process efficiency. Kinetic test data are well correlated by the Haldane equation, with a saturation constant K s and an inhibition constant K I , of 17.6 and 30.7 (mg l −1 4NP), respectively, whereas the maximum removal rate was in the range of 3.3–8.4 (mg 4NP mg VSS −1 d −1 ) depending on the substrate concentration peak reached in the reaction phase. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Water Research Elsevier

4-nitrophenol biodegradation in a sequencing batch reactor: kinetic study and effect of filling time

Loading next page...
 
/lp/elsevier/4-nitrophenol-biodegradation-in-a-sequencing-batch-reactor-kinetic-CTF1j1RD1m
Publisher
Elsevier
Copyright
Copyright © 2003 Elsevier Ltd
ISSN
0043-1354
D.O.I.
10.1016/j.watres.2003.09.023
Publisher site
See Article on Publisher Site

Abstract

Biodegradation kinetics of 4-nitrophenol (4NP) was investigated in a lab-scale sequencing batch reactor fed with the compound as the sole carbon source. The experimental results showed that complete 4NP removal can be easily achieved with acclimatized biomass, even if an inhibition kinetics is observed; furthermore, an improvement in the removal kinetics is obtained if the substrate concentration peak, reached in the reactor at the end of the filling time, is maintained to quite a low value. Both long feed phase and high biomass concentration are effective in reducing the substrate concentration peak and then improving the process efficiency. Kinetic test data are well correlated by the Haldane equation, with a saturation constant K s and an inhibition constant K I , of 17.6 and 30.7 (mg l −1 4NP), respectively, whereas the maximum removal rate was in the range of 3.3–8.4 (mg 4NP mg VSS −1 d −1 ) depending on the substrate concentration peak reached in the reaction phase.

Journal

Water ResearchElsevier

Published: Jan 1, 2004

References

  • p -Nitrophenol degradation by activated sludge attached nonwovens
    Bhatti, Z.I.; Toda, H.; Furukawa, K.
  • Aerobic 4-nitrophenol degradation by microorganisms fixed in a continuously working aerated solid-bed reactor
    Ray, P.; Oubelli Ait, M.; Loser, C.
  • A mathematical model for the continuous culture of microorganisms utilizing inhibitory substrates
    Andrews, J.F.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off