Gel-entrapped biomass of Lactarius salmonicolor for the effective treatment of aquatic Co2+ and Mn2+ pollution

Sayın F., Akar S., Tunc D., Akar T.

BIOMASS CONVERSION AND BIOREFINERY, vol.0, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 0
  • Publication Date: 2022
  • Doi Number: 10.1007/s13399-022-02565-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Keywords: Biosorption, Cobalt (Co2+), Manganese (Mn2+), Lactarius salmonicolor (L. salmonicolor), Immobilization, Silica gel, NICKEL(II) IONS, CELL IMMOBILIZATION, AQUEOUS-SOLUTION, PACKED-BED, BIOSORPTION, ADSORPTION, REMOVAL, SORPTION, EQUILIBRIUM, MECHANISM
  • Eskisehir Osmangazi University Affiliated: Yes


A fungal biomass, Lactarius salmonicolor (L. salmonicolor), was entrapped in a silica gel matrix to evaluate the removal of Co2+ and Mn2+ ions from an aqueous medium and a real effluent. The batch experiments were carried out to investigate the influences of biosorbent dosage, initial pH, contact time, and temperature. The results showed that no pH adjustment was necessary to obtain maximum removal of both Co2+ and Mn2+ ions by silica gel immobilized L. salmonicolor biomass (SILSB). Thirty and ten minutes were found to be necessary time to establish biosorption equilibrium for Co2+ and Mn2+ removal, respectively. The biosorption of both metal ions was best described by the pseudo-second-order kinetic model. The data of the isotherm modeling proved that the Co2+ and Mn2+ biosorption occurred by monolayer coverage of SILSB surface with the biosorption capacities of 117.70 and 137.05 mg g−1, respectively. The highest biosorption yields of Co2+ and Mn2+ ions in the continuous system are found using 50 mg (2 g L−1) of SILSB as the optimum amount. The biosorption capacity did not significantly change by increasing the flow rate from 0.5 to 4.0 mL min−1. The real wastewater treatment also showed that SILSB had remarkable biosorption efficacy for Co2+ and Mn2+. Metal ion-biosorbent interactions were examined by FTIR, pHZPC, SEM, EDX, elemental, and BET analyses. As a consequence of its excellent biosorption performance for the removal of Co2+ and Mn2+ ions, SILSB might be used as an efficient biosorbent in wastewater treatment.