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https://hdl.handle.net/10316/113981
Título: | Lignin Recovery from Black Liquor Using Integrated UF/NF Processes and Economic Analysis | Autor: | Sharma, Manorma Alves, Patrícia Gando-Ferreira, Licínio M. |
Palavras-chave: | crossflow filtration; fouling; integrated UF/NF process; lignin; mixed matrix membranes; economic analysis | Data: | 16-Fev-2023 | Editora: | MDPI | Projeto: | Project inpactus, innovative products and technologies from eucalyptus, Project Nº. 21874, funded by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of COMPETE 2020 n 246/AXIS II/2017 | Título da revista, periódico, livro ou evento: | Membranes | Volume: | 13 | Número: | 2 | Resumo: | Lignin is a polyphenolic biopolymer present in large amounts in black liquor (BL). This work investigated the recovery of lignin from BL (pre-filtered by ultrafiltration (UF)) by nanofiltration (NF). For the NF tests, laboratory-made mixed matrix membrane (MMM) prepared with 0.1% activated carbon (AC) nanoparticles were used in crossflow filtration mode. The effect of pressure (6-15 bar) and volume reduction (VR) (~65%) were analyzed, and the filtration performance was evaluated in terms of permeate flux, lignin rejection rate, and flux reduction. The lignin rejection rate varied in the range of 67-80% with the pressure, however, the highest increases in flux and rejection were observed at 12 bar, which was found to be the optimum pressure. At a VR of ~65%, the permeate flux decreased by ~55% and the lignin rejection rate increased from 78% to 86%. In addition, an economic evaluation was performed for the preparation of UF and NF MMM. The minimum-to-maximum price range was estimated considering the costs of the laboratory and commercial grade regents. It showed a difference of ~10-fold and ~14-fold for UF and NF membranes, respectively. The results of the laboratory-scale study were used to evaluate the economic feasibility of the process for recovering lignin- and hemicellulose-rich retentate streams. | URI: | https://hdl.handle.net/10316/113981 | ISSN: | 2077-0375 | DOI: | 10.3390/membranes13020237 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Química - Artigos em Revistas Internacionais I&D CERES - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Lignin-Recovery-from-Black-Liquor-Using-Integrated-UFNF-Processes-and-Economic-AnalysisMembranes.pdf | 3.36 MB | Adobe PDF | Ver/Abrir |
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