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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.)

Production of Nanostructured Silver from Waste Radiographic Films Using a Microwave-Assisted Hydrothermal Method

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Author(s):
Sa, Bruna S. [1] ; Zito, Cecilia A. [1] ; Perfecto, Tarcisio M. [1] ; Volanti, Diogo P. [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ, Lab Mat Sustainabil LabMatSus, Ibilce, Unesp, R Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF SUSTAINABLE METALLURGY; v. 4, n. 3, p. 407-411, SEP 2018.
Web of Science Citations: 1
Abstract

Radiographic films, widely used in medical and dental diagnosis, are an excellent source of silver (Ag), due to their content of light-sensitive Ag compounds. After their use, the films are commonly incorrectly thrown away in the regular trash, causing potential environmental damage. Thus, sustainable methods for recovering Ag from discarded radiographic films are desirable for economic reasons and environmental preservation. In this study, we performed the Ag recovery from waste radiographic films and carried out its structural, chemical, and morphological characterization. First, a solution of commercial bleach, based on sodium hypochlorite (NaClO), was used to separate Ag from radiographic films. Then, a microwave-assisted hydrothermal method was applied to produce nanometric metallic Ag using sucrose as a green reductant and sodium hydroxide (NaOH). The obtained product was composed of relatively high purity (similar to 97%) nanostructured Ag (NS-Ag). Thus, the proposed procedure was efficient, and a promising approach for Ag recovery from radiographic films since the obtained NS-Ag might be used in a wide range of technological applications. (AU)

FAPESP's process: 17/01267-1 - Graphene acid-hollow metal oxides composites for gas sensor
Grantee:Diogo Paschoalini Volanti
Support Opportunities: Regular Research Grants
FAPESP's process: 17/13230-5 - Partial ethanol reforming: stability and selectivity of mix metal amphoteric oxides as catalysts for atmospheric pressure flow reaction
Grantee:Mauricio Boscolo
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants