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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Salvadori, Marcia R. [1] ; Ando, Romulo A. [2] ; Oller Do Nascimento, Claudio A. [3] ; Correa, Benedito [1]
Total Authors: 4
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING; v. 49, n. 11, p. 1286-1295, 2014.
Web of Science Citations: 9
Abstract

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)