Adsorption isotherm, kinetics, and thermodynamic study on removal of potentially toxic metals from aqueous solution using Cyathus striatus Willd

Abstract The present study investigated the biosorption characteristics of live biomass of a wood rot fungus Cyathus striatus Willd. for removal of potentially toxic metals, particularly cadmium, lead, zinc, and strontium from aqueous solution. The parameters including metal ion concentrations, pH, temperature, contact time influences the biosorption process. The maximum adsorption capacity of 65.94, 64.55, 71.33, 56.15 mg/g was observed for Cd(II), Pb(II), Zn(II), and Sr(II) respectively at optimized conditions. The experimental data showed good compliance with Langmuir, Freundlich, and DKR isotherm model along with pseudo second order and Elovich kinetic model which implies the complex interaction between surface interaction and chemisorption. The thermodynamic parameters, ΔGº, ΔHº, ΔSº confirms that the biosorption process is endothermic and spontaneous at temperature range of 303.15–353.15 K. The morphological changes of metal-loaded hyphae were observed using SEM. The probable involvement of functional groups of fungal biomass including carbonyl, hydroxyl, carboxyl, halide groups were confirmed by FTIR. The application of live fungal biomass of C. striatus in the sequestration of potentially toxic metals is significant since it enhances the field of mycoremediation by advancing our basic understanding of fungus biosorption mechanisms and provides an accessible and environmentally friendly substitute over conventional physicochemical remediation approaches. GRAPHICAL ABSTRACT

• Publication year

  2025

• Venue

  Toxicological & Environmental Chemistry

• Publication date

  2025-10-21

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1080/02772248.2025.2572832
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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