Bioremediation from wastewater and extracellular synthesis of copper nanoparticles by the fungus Trichoderma koningiopsis

Autor(es)

Salvadori, Marcia R. ^[1] ; Ando, Romulo A. ^[2] ; Oller Do Nascimento, Claudio A. ^[3] ; Correa, Benedito ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Microbiol, Biomed Inst 2, BR-05508000 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Dept Fundamental Chem, Inst Chem, BR-05508000 Sao Paulo - Brazil

^[3] Univ Sao Paulo, Dept Chem Engn, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING; v. 49, n. 11, p. 1286-1295, 2014.
• Citações Web of Science: 9

Resumo

This is the first study describing the rapid extracellular production of copper nanoparticles by dead biomass of Trichoderma koningiopsis. The production and uptake of copper nanoparticles by dead biomass of Trichoderma koningiopsis were characterized by investigating physicochemical factors, equilibrium concentrations and biosorption kinetics, combined with scanning electron microscopy (SEM), energy dispersive X-ray (EDS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). A successful route for the metallic copper nanoparticles synthesis was achieved, and followed a Langmuir isotherm where a high biosorption capacity was observed, 21.1 mg g(-1). The kinetic analysis showed that copper biosorption followed a pseudo-second-order model. The nanoparticles mainly exhibited a spherical shape, with an average size of 87.5 nm, and were synthesized extracellularly. The presence of proteins as stabilizing agents of the nanoparticles was demonstrated. The extracellular biosynthesis and uptake of copper nanoparticles using dead fungal biomass is a low-cost green processes, and bioremediation of impacted local. (AU)

• Processo FAPESP: 10/52305-1 - Procedimentos de screening para seleção de fungos no processo de adsorção de íons de metais pesados isolados de solo e água em região pertencente à Companhia Vale do Rio Doce
• Beneficiário: Marcia Regina Salvadori
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado