Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis
High water consumption is a major environmental problem that the pulp and paper industry is facing. Ultrafiltration (UF) can be used to remove the dissolved and colloidal substances (DCS) concentrated during the recycling of white water (the process water) to facilitate the reuse of white water and...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2015-02-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_2_2376_Chen_Ultrafiltration_Paper_Mill |
| _version_ | 1818257418980687872 |
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| author | Chen Chen Shengtao Mao Jingjing Wang Jinfeng Bao Hui Xu Wenpeng Su Hongqi Dai |
| author_facet | Chen Chen Shengtao Mao Jingjing Wang Jinfeng Bao Hui Xu Wenpeng Su Hongqi Dai |
| author_sort | Chen Chen |
| collection | DOAJ |
| description | High water consumption is a major environmental problem that the pulp and paper industry is facing. Ultrafiltration (UF) can be used to remove the dissolved and colloidal substances (DCS) concentrated during the recycling of white water (the process water) to facilitate the reuse of white water and reduce fresh water consumption. However, membrane fouling limits the application of UF in this industry. In this study, super-clear filtrate obtained from a fine paper mill was purified with a polyethersulfone (PES) ultrafiltration membrane to evaluate the reuse performance of the ultrafiltrate. The membrane foulants were characterized by scanning electron microscopy, energy-dispersive spectrophotometry, attenuated total reflection-fourier transform infrared spectroscopy, and gas chromatography-mass spectrometry. The results indicate that the retention rate of stock and the strength properties of paper increased when the ultrafiltrate was reused in the papermaking process compared to when super-clear filtrate was used. The reversible membrane foulants during ultrafiltration accounted for 85.52% of the total foulants and primarily originated from retention aids, drainage aids, and wet strength resins, while the irreversible adsorptive foulants accounted for 14.48% and mostly came from sizing agents, coating chemicals, and others. Moreover, the presence of dissolved multivalent metal ions, especially Ca2+, accelerated membrane fouling. |
| first_indexed | 2024-12-12T17:43:21Z |
| format | Article |
| id | doaj.art-b021945a8f9f41e08a4142f8698e8d8d |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-12-12T17:43:21Z |
| publishDate | 2015-02-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-b021945a8f9f41e08a4142f8698e8d8d2022-12-22T00:17:01ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-02-011022376239110.15376/biores.10.2.2376-2391Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling AnalysisChen Chen0Shengtao Mao1Jingjing Wang2Jinfeng Bao3Hui Xu4Wenpeng Su5Hongqi Dai6Nanjing Forestry University; ChinaDepartment of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing Jiangsu, 210037, P. R. China; ChinaDepartment of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing Jiangsu, 210037, P. R. China; ChinaZhejiang Creation Environment Technology Co. Ltd., Hangzhou Zhejiang, 310000, P. R. China; ChinaDepartment of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing Jiangsu, 210037, P. R. China; ChinaDepartment of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing Jiangsu, 210037, P. R. China; ChinaDepartment of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing Jiangsu, 210037, P. R. China; ChinaHigh water consumption is a major environmental problem that the pulp and paper industry is facing. Ultrafiltration (UF) can be used to remove the dissolved and colloidal substances (DCS) concentrated during the recycling of white water (the process water) to facilitate the reuse of white water and reduce fresh water consumption. However, membrane fouling limits the application of UF in this industry. In this study, super-clear filtrate obtained from a fine paper mill was purified with a polyethersulfone (PES) ultrafiltration membrane to evaluate the reuse performance of the ultrafiltrate. The membrane foulants were characterized by scanning electron microscopy, energy-dispersive spectrophotometry, attenuated total reflection-fourier transform infrared spectroscopy, and gas chromatography-mass spectrometry. The results indicate that the retention rate of stock and the strength properties of paper increased when the ultrafiltrate was reused in the papermaking process compared to when super-clear filtrate was used. The reversible membrane foulants during ultrafiltration accounted for 85.52% of the total foulants and primarily originated from retention aids, drainage aids, and wet strength resins, while the irreversible adsorptive foulants accounted for 14.48% and mostly came from sizing agents, coating chemicals, and others. Moreover, the presence of dissolved multivalent metal ions, especially Ca2+, accelerated membrane fouling.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_2_2376_Chen_Ultrafiltration_Paper_MillPaper mill white waterReuse performanceDissolved and colloidal substances (DCS)Foulant characterizationFoulant identificationUltrafiltration |
| spellingShingle | Chen Chen Shengtao Mao Jingjing Wang Jinfeng Bao Hui Xu Wenpeng Su Hongqi Dai Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis BioResources Paper mill white water Reuse performance Dissolved and colloidal substances (DCS) Foulant characterization Foulant identification Ultrafiltration |
| title | Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis |
| title_full | Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis |
| title_fullStr | Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis |
| title_full_unstemmed | Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis |
| title_short | Application of Ultrafiltration in a Paper Mill: Process Water Reuse and Membrane Fouling Analysis |
| title_sort | application of ultrafiltration in a paper mill process water reuse and membrane fouling analysis |
| topic | Paper mill white water Reuse performance Dissolved and colloidal substances (DCS) Foulant characterization Foulant identification Ultrafiltration |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_2_2376_Chen_Ultrafiltration_Paper_Mill |
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