Academic Journal
Dynamic scouring of multifunctional granular material enhances filtration performance in membrane bioreactor: Mechanism and modeling
| العنوان: | Dynamic scouring of multifunctional granular material enhances filtration performance in membrane bioreactor: Mechanism and modeling |
|---|---|
| المؤلفون: | Zhang, Wenxiang, Liang, Wenzhong, Zhang, Zhien |
| المساهمون: | Water Desalination and Reuse Research Center (WDRC), Biological and Environmental Science and Engineering (BESE) Division, State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510530, PR China, Department of Chemical and Biomedical Engineering, West Virginia University, 40110 Evansdale Drive, Morgantown, WV 26506, USA |
| بيانات النشر: | Elsevier BV |
| سنة النشر: | 2022 |
| المجموعة: | King Abdullah University of Science and Technology: KAUST Repository |
| الوصف: | The granular material (GM) is able to effectively improve the membrane fouling control in membrane bioreactor (MBR) by dynamic scouring, adsorption behavior and enzymatic degradation. However, their roles and effects on the filtration performance of MBR remain unclear. The present work investigated the GM dynamic scouring mechanism, revealed the multifunctional quantitative evaluation, and clarified the filtration performance at various GM operating conditions in MBR. First, the aerobic granular sludge (AGS)-filtration process was still limited by the presence of irreversible membrane fouling, which decreased the filtration performance in MBR (threshold flux [169.5 L m−2 h−1] and (turning point of membrane fouling resistance [1.1 × 1012 m−1]). To solve this problem, the GMs (activated carbon [AC] and laccase immobilized activated carbon [LAC]) was added into the AGS-filtration process to enhance the filtration performance. Above all, based on momentum conservation, the dynamic scouring mathematical model was put forward to elucidate the dynamic scouring mechanism of GM towards the membrane surface. The scouring stress on the membrane surface was proportional to the total mass of GM and offered an additional shear effect for clearly promoting the collision between GM and foulant, and decreasing their deposition on the membrane surface via friction with the membrane. Then, both AC and LAC exhibited a highly desirable adsorption efficiency for foulant removal, whereas the enzymatic degradation of LAC also furtherly straightened this effect. Furthermore, a new contribution quantification model was proposed for evaluating the contribution rates of dynamic scouring (59.1%), adsorption behavior (36.4%) and enzymatic degradation (4.6%) to boost the filtration performance, implying that the dynamic scouring and adsorption behavior brought about the dominated promotion. At the GM of 8 g/L and size of 300–600 μm, AGS-filtration exhibited an optimized performance in term of threshold flux, turning point of membrane fouling ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf; application/vnd.openxmlformats-officedocument.wordprocessingml.document; image/jpeg |
| اللغة: | unknown |
| تدمد: | 1873-3123 0376-7388 |
| Relation: | https://linkinghub.elsevier.com/retrieve/pii/S0376738822007244; Zhang, W., Liang, W., & Zhang, Z. (2022). Dynamic scouring of multifunctional granular material enhances filtration performance in membrane bioreactor: Mechanism and modeling. Journal of Membrane Science, 663, 120979. https://doi.org/10.1016/j.memsci.2022.120979; 2-s2.0-85139274668; Journal of Membrane Science; 120979; http://hdl.handle.net/10754/683051; 663 |
| DOI: | 10.1016/j.memsci.2022.120979 |
| الاتاحة: | http://hdl.handle.net/10754/683051 https://doi.org/10.1016/j.memsci.2022.120979 |
| Rights: | NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, [663, , (2022-10-04)] DOI:10.1016/j.memsci.2022.120979 . © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ ; 2024-10-04 |
| رقم الانضمام: | edsbas.76A1197F |
| قاعدة البيانات: | BASE |
| تدمد: | 18733123 03767388 |
|---|---|
| DOI: | 10.1016/j.memsci.2022.120979 |