title: Biotreatment of phenol-contaminated wastewater in a spiral packed-bed bioreactor.
abstract: A spiral packed-bed bioreactor inoculated with microorganisms obtained from activated sludge was used to conduct a feasibility study for phenol removal. The reactor was operated continuously at various phenol loadings ranging from 53 to 201.4 g m(-3) h(-1), and at different hydraulic retention times (HRT) in the range of 20-180 min to estimate the performance of the device. The results indicated that phenol removal efficiency ranging from 82.9 to 100% can be reached when the reactor is operated at an HRT of 1 h and a phenol loading of less than 111.9 g m(-3) h(-1). At an influent phenol concentration of 201.4 g m(-3), the removal efficiency increased from 18.6 to 76.9% with an increase in the HRT (20-120 min). For treatment of phenol in the reactor, the maximum biodegradation rate (V (m)) was 1.82 mg l(-1) min(-1); the half-saturation constant (K (s)), 34.95 mg l(-1).
authors.affiliation: Department of Safety, Health and Environmental Engineering, National Yunlin University of Science and Technology, 123 University Road, Sect. 3, Douliou, Yunlin, 64002, Taiwan, ROC. linwen@yuntech.edu.tw
authors.forename: Chi-Wen
authors.initials: CW
authors.lastname: Lin
authors.forename: Chia-Hsien
authors.initials: CH
authors.lastname: Yen
authors.forename: Shen-Long
authors.initials: SL
authors.lastname: Tsai
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D008954:Models, Biological; D019800:Phenol / Q000302:isolation & purification / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods
chemical_list: D012722:Sewage; D014874:Water Pollutants, Chemical; D019800:Phenol