Biological treatment of para-chlorophenol containing synthetic wastewater using rotating brush biofilm reactor

EKER S., Kargi F.

JOURNAL OF HAZARDOUS MATERIALS, vol.135, pp.365-371, 2006 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 135
  • Publication Date: 2006
  • Doi Number: 10.1016/j.jhazmat.2005.11.079
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.365-371
  • Keywords: 4-chlorophenol (4-CP), rotating brush biofilm reactor (RBBR), toxicity removal, COMETABOLIC DEGRADATION, 2,4-DICHLOROPHENOL, BIODEGRADATION, TOXICITY, PERFORMANCE, REMOVAL, 4-CHLOROPHENOL, PHENOL
  • Dokuz Eylül University Affiliated: Yes

Abstract

A novel rotating brush biofilm reactor (RBBR) was used for para-chlorophenol (4-chlorophenol.4-CP). COD and toxicity removal from symbetic wastewater containin different concentrations of 4-CP. Effects of major operating variables such as the feed 4-CP and COD concentrations and A/Q (biofilm surface area/feed flow rate) ratio on the performance of the biofilm reactor were investigated. A Box-Wilson statistical experiment design method was used by considering the feed 4-CP (0-1000 mg l(-1)). COD (2000-6000 mg l(-1)) and A/Q ratio (73-293 m(2) day m(-3)) as the independent variables while the 4-CP, COD and toxicity removals were the objective functions. The results were correlated by a response function and the coefficients were determined by regression analysis. Percent 4-CP. COD and toxicity removals determined from the response functions were in good agreement with the experimental results. 4-CP. COD and toxicity removals increased with decreasing feed 4-CP and increasing A/Q ratio. Optimum conditions resulting in maximum COD, 4-CP and toxicity removals were found to be A/Q ratio of nearly 180 m2 day m(-3), feed COD of nearly 4000 mg l(-1) and feed 4-CP of less than 205 mg l(-1). (c) 2005 Elsevier B.V. All rights reserved.