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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.)

Effects of supercritical carbon dioxide on waste banana peels for heavy metal removal

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Author(s):
Albarelli, Juliana Q. [1] ; Rabelo, Rodrigo B. [1] ; Santos, Diego T. [2] ; Beppu, Marisa M. [1] ; Meireles, M. Angela A. [2]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, Sch Chem Engn, UNICAMP, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas, LASEFI DEA FEA, Sch Food Engn, UNICAMP, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF SUPERCRITICAL FLUIDS; v. 58, n. 3, p. 343-351, OCT 2011.
Web of Science Citations: 32
Abstract

The effects of supercritical carbon dioxide (CO(2)) on waste banana peels for copper adsorption were evaluated. Supercritical CO(2) was employed both in a solvent extraction for antioxidant compound recovery and in an emerging biomass treatment to increase the subsequent heavy metal-removal step; the latter is termed ``explosion with supercritical CO(2){''}. This lignocellulosic biomass was analyzed before and after being subjected to both processes by scanning electron microscopy and X-ray patterning. Thermal gravimetric and differential scanning calorimetry analyses were performed to understand the different effects of supercritical carbon dioxide employed in these two processes on banana peels. The explosion with supercritical CO(2) process resulted in a more pronounced effect on the vegetable structure. Nevertheless, no increase in the copper-removal capacity was achieved. The adsorption studies showed similar behaviors for fresh and extracted samples, demonstrating that banana peels previously extracted with supercritical CO(2) retained their adsorption capacity for subsequent heavy metal removal. (C) 2011 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 10/02819-9 - Preparation of chitosan membranes modified with chelating agents and their characterization as metal ion adsorbents
Grantee:Rodrigo Balloni Rabelo
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 10/16485-5 - Technical and economic evaluation of the integration of sustainable processes for a better use of brazilian ginseng (Pfaffia glomerata)
Grantee:Diego Tresinari dos Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral