BIBLIOS

  Ciências References Management System

Visitor Mode (Login)


Back

Publication details

Title
Micronization of Calcium Acetate from a Food Residue Using Supercritical Antisolvent Precipitation

Authors
Luis C. S. Nobre
António M. F. Palavra
INSTITUTO SUPERIOR TÉCNICO
Mário J. F. Calvete
UNIVERSIDADE DE COIMBRA
Carlos A. Nieto de Castro
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
Beatriz P. Nobre
INSTITUTO SUPERIOR TÉCNICO

Document type
Conference papers

Scope
National

Refereeing
Yes

Additional information
Poster

Document type
Abstract

Summary
The food industry generates annually thousands of tons of egg shells around the globe. This important source of calcium carbonate has called the attention of the chemists for many applications in different areas. . In the catalysis perspective this raw material can be a source of calcium oxide, which can be used as a heterogeneous catalyst to produce, for example, biodiesel. On the other hand, one of the crucial points for the improvement of the catalysts is the anoarchitecture of the particles. A way to achieve this objective is the use of processes with supercritical fluids. The supercritical antisolvent process (SAS) has been used to produce micro or nanoparticles of different compounds for a wide range of applications. The study of the SAS experimental conditions (temperature, pressure, concentration and flow rate ratio) is important to optimize the size and morphology of the obtained particles. The aim of this work is to produce nanoparticles of calcium oxide from egg shells using the SAS micronization process. In order to attain this purpose, the calcium carbonate of the egg shells was derived into calcium acetate, which was then successfully micronized by\nthe SAS process. The micronized calcium acetate and the calcium oxide, obtained by the calcination of the former, were evaluated in terms of morphology and particle size by scanning electron microscopy analysis.

Editor(s)
Rui Moreira and Luísa Martins

Date of Publication
2018-07-27

Institution
UNIVERSIDADE DE LISBOA

Event
3rd Meeting of the CQUL (3ECQUL), Chemistry at Lisboa & 2018 Summer School, RULisboa, June, 27-29, 2018

Address
Lisboa, Portugal

Organizers
Colegio de Química da Universidade de Lisboa

Publisher
Universidade de Lisboa

Collection
Abstract Book

Edition
2018
Volume
1

Number of pages
172
Starting page
62
Last page
62

Identifiers
URL - https://www.ulisboa.pt/sites/ulisboa.pt/files/public/bookabstracts_3ecqul.pdf

Keywords
Micronization Calcium Acetate Food Residue Supercritical Antisolvent Precipitation


Export

APA
Luis C. S. Nobre, António M. F. Palavra, Mário J. F. Calvete, Carlos A. Nieto de Castro, Beatriz P. Nobre, (2018). Micronization of Calcium Acetate from a Food Residue Using Supercritical Antisolvent Precipitation. 3rd Meeting of the CQUL (3ECQUL), Chemistry at Lisboa & 2018 Summer School, RULisboa, June, 27-29, 2018 , 62-62

IEEE
Luis C. S. Nobre, António M. F. Palavra, Mário J. F. Calvete, Carlos A. Nieto de Castro, Beatriz P. Nobre, "Micronization of Calcium Acetate from a Food Residue Using Supercritical Antisolvent Precipitation" in 3rd Meeting of the CQUL (3ECQUL), Chemistry at Lisboa & 2018 Summer School, RULisboa, June, 27-29, 2018 , Lisboa, Portugal, 2018, pp. 62-62, doi:

BIBTEX
@InProceedings{41323, author = {Luis C. S. Nobre and António M. F. Palavra and Mário J. F. Calvete and Carlos A. Nieto de Castro and Beatriz P. Nobre}, title = {Micronization of Calcium Acetate from a Food Residue Using Supercritical Antisolvent Precipitation}, booktitle = {3rd Meeting of the CQUL (3ECQUL), Chemistry at Lisboa & 2018 Summer School, RULisboa, June, 27-29, 2018 }, year = 2018, pages = {62-62}, address = {Lisboa, Portugal}, publisher = {Universidade de Lisboa} }