The growth behavior of Chlorella vulgaris in the presence of 4-chlorophenol and 2,4-dichlorophenol

ŞAHİNKAYA E. , Dilek F. B.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, vol.72, no.3, pp.781-786, 2009 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1016/j.ecoenv.2007.11.014
  • Page Numbers: pp.781-786


Toxicity of 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) on the growth of Chlorella vulgaris was investigated in batch reactors. Results revealed that 4-CP did not adversely affect the growth of algae up to 20 mg/L, however higher concentrations inhibited growth appreciably and no growth was detected at 100 mg/L. 4-CP also caused some physiological changes in the algal cells as increasing initial 4-CP concentration caused a linear decrease in chlorophyll a (chl-a) content of the cell. 2,4-DCP up to 20 mg/L did not exert toxic effect on the growth of C vulgaris, rather an induction effect was evident. Unlike a linear decrease with 4-CP, no exact correlation between 2,4-DCP concentration and chl-a content of the cell was observed, but it was certain that the presence of 2,4-DCP caused some physiological changes in the cell of C. vulgaris. No biodegradation of 4-CP and 2,4-DCP was observed over a 30-day incubation. (c) 2007 Elsevier Inc. All rights reserved.