Effective oil spill cleaned up with environmentally friendly foams filled with eucalyptus charcoal residue

Autor(es)

Maia, Lana S. ^[1] ; Zanini, Noelle C. ^[2] ; de Souza, Alana G. ^[3] ; Barbosa, Rennan F. S. ^[3] ; Rosa, Derval S. ^[3] ; da Barud, Hernane S. ^[4] ; Mulinari, Daniella R. ^[2]

Afiliação do(s) autor(es)

^[1] State Univ Rio de Janeiro UERJ, Dept Chem & Energy, BR-27537000 Resende - Brazil

^[2] State Univ Rio de Janeiro UERJ, Dept Mech & Energy, BR-27537000 Resende - Brazil

^[3] Fed Univ ABC UFABC, Ctr Engn Modeling & Appl Social Sci CECS, Santo Andre, SP - Brazil

^[4] Univ Araraquara UNIARA, Lab Polymers & Biomat, BR-14801320 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IRANIAN POLYMER JOURNAL; NOV 2021.
• Citações Web of Science: 0

Resumo

We developed polyurethane foams (PU) filled with eucalyptus charcoal residue (ECR) (5, 10, 20, and 30% by wt) for diesel sorption from seawater. The PU foams were characterized by FTIR, FT-Raman, SEM, density, TGA, contact angle, diesel S500 and S10 sorption, and recyclability. The ECR addition altered PU chemical structure, inducing new chemical bonds and probably altering cross-linking ability of the foams, as indicated by FTIR. FT-Raman spectra of PU-ECR foams showed shifts associated with filler dispersion and interaction with the matrix; besides, its addition decreased the foam pore size and density. The ECR addition did not significantly change the thermal behavior of PU foam and increased hydrophilicity in low ECR content and hydrophobicity in high ECR content samples. Experimental results showed adequate oil sorption capacity, and the optimal amount was 30% (by wt) ECR, which enhanced the diesel sorption from 4.1 and 5.9 g.g(-1) to 9.6 and 8.8 g.g(-1) for diesel S500 and S10, respectively. The Langmuir sorption isotherm was the best-fitting model to describe oil sorption. Reusability of the PU + 30% ECR was examined through 34 and 39 cycles for diesel S500 and S10, and about 50% of the initial sorption capacity remained at the end. The results indicated the success of developing a sustainable material and demonstrating feasibility in practical applications of PU-ECR foam for spilled oil removal from seawater or treatment of oily effluents. {[}GRAPHICS] . (AU)

• Processo FAPESP: 18/25512-8 - Plataforma para Cultura de Células Baseada em Biocelulose
• Beneficiário: Hernane da Silva Barud
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 18/11277-7 - Filmes de PBAT com nanoestruturas de celulose tratadas com óleos essenciais encapsulados para embalagens ativas
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Auxílio à Pesquisa - Regular