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Biodegradation of 4-CP and 2,4-DCP mixture in a rotating biological contactor (RBC)

Paper ID Volume ID Publish Year Pages File Format Full-Text
4964 264 2006 7 PDF Available
Title
Biodegradation of 4-CP and 2,4-DCP mixture in a rotating biological contactor (RBC)
Abstract

In this study, the performance of a two stage rotating biological contactor (RBC) was evaluated for the treatment of synthetic wastewater containing peptone, 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) at 5 rpm. Also, the effect of biogenic substrate (peptone) concentration on the reactor performance was investigated. High chlorophenols (>98%) and COD (>94%) removals were achieved throughout the reactor operation in the first stage and the second stage behaved as a polishing step. The observed maximum 4-CP and 2,4-DCP removal rates in the first stage were 2305 mg/L day (18.3 g/m2 day) and 1202 mg/L day (9.5 g/m2 day), respectively. Deacclimation of biomass was carried out for 3.5 months after 260 days of operation with the reactor feed turning on to contain peptone only. Upon addition of 4-CP (200 mg/L) and 2,4-DCP (100 mg/L), a rapid reacclimation of biomass was observed within 16 days. Shock loading experiments with 4-CP (822.7 ± 1.4) and 2,4-DCP (424.6 ± 1.9 mg/L) resulted in around four times higher effluent 4-CP concentrations than 2,4-DCP in both stages, which may be due to strong competitive inhibition of 2,4-DCP on 4-CP degradation.

Keywords
4-Chlorophenol; 2,4-Dichlorophenol; Rotating biological contactor
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Biodegradation of 4-CP and 2,4-DCP mixture in a rotating biological contactor (RBC)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 31, Issue 2, 1 September 2006, Pages 141–147
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us