PMID- 28061932 OWN - NLM STAT- MEDLINE DCOM- 20170315 LR - 20181011 IS - 1061-4303 (Print) IS - 1061-4303 (Linking) VI - 88 IP - 12 DP - 2016 Dec 1 TI - Biodegradation of 2,4-dichlorophenol in Packed-Bed Biofilm Reactor: Effect of Hydraulic Retention Time, Biogenic Substrate, and Loading Rate. PG - 2191-2197 LID - 10.2175/106143016X14733681695726 [doi] AB - The removal of 2,4-dichlorophenol (2,4-DCP) by a pure culture of Bacillus endophyticus strain immobilized on ceramic balls was studied in a packed bed biofilm reactor (PBBR). The biodegradation of 2,4-DCP was studied in fed-batch and continuous mode and the effect of different parameters such as hydraulic retention time (HRT), biogenetic substrate concentration, and loading rate on the removal of 2,4-DCP were evaluated. Field emission scanning electron microscope (FESEM) results established the biofilm formation on the ceramic beads. The maximum volumetric removal rate found to be 127.2 mg/L.d at loading rate of 172.8 mg/L.d with 73.6% degradation (12.5 hours of HRT, 90 mg/L of 2,4-DCP, 0.2 g/L of peptone). The bioreactor showed more than 98% removal of 2,4-DCP at loading rate of 115.2 mg/L.d at 12.5 hours of HRT and 0.2 g/L of peptone. Effect of peptone showed that lower peptone concentration increases the removal efficiency; however, some peptone is necessary to maintain the 2,4-DCP removal efficiency. FAU - Patel, Bhishma P AU - Patel BP AD - Environmental Pollution Abatement Lab, Chemical Engineering Department, National Institute of Technology, Rourkela, Odisha, India - 769008. FAU - Kumar, Arvind AU - Kumar A LA - eng PT - Journal Article PL - United States TA - Water Environ Res JT - Water environment research : a research publication of the Water Environment Federation JID - 9886167 RN - 0 (Chlorophenols) RN - 0 (Peptones) RN - 0 (Water Pollutants, Chemical) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Bacteria/drug effects MH - Bacterial Physiological Phenomena MH - *Biodegradation, Environmental MH - Biofilms/*growth & development MH - *Bioreactors MH - Chlorophenols/chemistry/*metabolism MH - Microscopy, Electron, Scanning MH - Peptones MH - Time Factors MH - Waste Disposal, Fluid MH - Water Pollutants, Chemical/chemistry/*metabolism EDAT- 2017/01/08 06:00 MHDA- 2017/03/16 06:00 CRDT- 2017/01/08 06:00 PHST- 2017/01/08 06:00 [entrez] PHST- 2017/01/08 06:00 [pubmed] PHST- 2017/03/16 06:00 [medline] AID - 10.2175/106143016X14733681695726 [doi] PST - ppublish SO - Water Environ Res. 2016 Dec 1;88(12):2191-2197. doi: 10.2175/106143016X14733681695726.