Performance assessment of a bench scale hybrid filter in the collection of nanoparticles

Autor(es)

Castro, Bruno Jose Chiaramonte de ^[1] ; Lacerda, Camila Raquel de ^[1] ; Melo, Bruna Ramela de ^[1] ; Sartim, Rafael ^{[2, 3]} ; Aguiar, Monica Lopes ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Grad Program Chem Engn, Rodovia Washington Luis S-N, BR-13565905 Sao Carlos, SP - Brazil

^[2] ArcelorMittal, Global R&D Brazil, Ave Brigadeiro Eduardo Gomes 526, BR-29160904 Serra, ES - Brazil

^[3] Univ Fed Espirito Santo, Dept Ind Technol, Ave Fernando Ferrari 514, BR-29075910 Vitoria, ES - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PROCESS SAFETY AND ENVIRONMENTAL PROTECTION; v. 154, p. 32-42, OCT 2021.
• Citações Web of Science: 0

Resumo

Hybrid filters are promising alternatives for particulate emission control. Although good results have been obtained in the application of hybrid filters for the collection of microparticles, there are still few studies for the collection of nanoparticles. This paper investigates the performance of a bench scale hybrid filter in the collection of nanoparticles of 10-300 nm. A factorial design was proposed to evaluate the influences of the electric field, the filtration velocity, and the filter medium on the nanoparticle collection of the hybrid filter (HF), which was composed by an electrostatic precipitator (ESP) followed by a fabric filter (FF). The electric field was varied from 0.0 to 4.0 kV cm(-1), the filtration velocity, from 1.0 to 2.0 m min(-1), and two filter media were tested: one of polyacrylonitrile (PAN) and the other of polyacrylonitrile with a polytetrafluorethylene membrane (PAN/PTFE). The electrostatic charging increased the collection efficiency not only in the ESP, but also in the PAN filter, indicating that the electrostatic attraction of the nanoparticles to the fibers was intensified, even without polarizing the filter medium with an external electric field. The particle penetration decreased by at least 19 % and the quality factor increased by at least 10 %. (C) 2021 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers. (AU)

• Processo FAPESP: 97/04024-7 - Estudo da formacao de tortas de filtracao de gases, em filtros de tecido.
• Beneficiário: Mônica Lopes Aguiar
• Modalidade de apoio: Auxílio à Pesquisa - Regular