Removal of chlorophenols from aquatic systems using the dried and dead fungus Pleurotus sajor caju

Bioresour Technol. 2005 Jan;96(1):59-62. doi: 10.1016/j.biortech.2003.11.029.

Abstract

In this study, the potential use of the fungus Pleurotus sajor caju to remove phenols (i.e., phenol, o-chlorophenol, p-chlorophenol and 2,4,6-trichlorophenol) from aqueous solutions was evaluated. Biosorption of phenol or chlorophenols reached equilibrium in 4 h. The maximum adsorptions of phenol and chlorophenols onto the Pleurotus sajor caju were 0.95 mmol/g for phenol, 1.24 mmol/g for o-chlorophenol, 1.47 mmol/g for p-chlorophenol and 1.89 mmol/g for 2,4,6-trichlorophenol. The affinity order was as follows: 2,4,6-trichlorophenol> p-chlorophenol> o-chlorophenol>phenol. Phenol and chlorophenols bindings onto Pleurotus sajor caju were clearly pH dependent. The adsorption of phenol and chlorophenols increased with increasing pH. Desorption was achieved using methanol solution (30%, v/v). Pleurotus sajor caju biomass is suitable for reuse for more than five cycles without noticeable loss of adsorption capacity.

Publication types

  • Comparative Study

MeSH terms

  • Adsorption
  • Chlorophenols / chemistry
  • Chlorophenols / isolation & purification*
  • Chromatography, High Pressure Liquid
  • Hydrogen-Ion Concentration
  • Methanol
  • Pleurotus / chemistry*
  • Time Factors
  • Waste Disposal, Fluid / methods*
  • Water Purification / methods*

Substances

  • Chlorophenols
  • Methanol