Studies of the Effects of Co-substrates on Biodegradation Kinetics of 4-Chlorophenol Using Response Surface Methodology (RSM)
This study aimed to investigate the effect of glucose or sucrose as cosubstrate on the kinetics of 4-chlorophenol (4-CP) biodegradation by 4-CP-acclimated activated sludge. The performance of 4-CP biodegradation was enhanced in the presence of co-substrate with greater values of zero-order rate c...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Sains Malaysia
2019
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| Subjects: | |
| Online Access: | http://eprints.usm.my/50040/1/Nornazifah_JPS.pdf http://eprints.usm.my/50040/ https://jps.usm.my/biodegradation-kinetics-of-4-chlorophenol/ |
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| Summary: | This study aimed to investigate the effect of glucose or sucrose as cosubstrate
on the kinetics of 4-chlorophenol (4-CP) biodegradation by 4-CP-acclimated
activated sludge. The performance of 4-CP biodegradation was enhanced in the presence
of co-substrate with greater values of zero-order rate constant observed for sucrose
compared to glucose at higher 4-CP concentration. The interaction effects of two factors,
namely initial 4-CP and co-substrate concentrations ranging from 100–500 mg l–1 and
0–1000 mg l–1, respectively, on the biodegradation kinetics were examined by using
response surface methodology (RSM). For glucose, the kinetics was found dependent on
the 4-CP initial concentration. The optimised condition for 4-CP biodegradation in the
presence of glucose was: 200 mg l–1 4-CP and 750 mg l–1 glucose with rate constant of
7.630 mg l–1 h–1 |
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