| Autor: |
Anh Q. Nguyen, Luong N. Nguyen, Md Abu Hasan Johir, Huu Hao Ngo, Long D. Nghiem |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Journal of Membrane Science Letters, Vol 2, Iss 1, Pp 100023- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2772-4212 |
| DOI: |
10.1016/j.memlet.2022.100023 |
| Popis: |
This study examined membrane fouling and associated microbial taxa in a membrane bioreactor operating at a sub-critical flux condition using next-generation amplicon sequencing. The membrane was operated at a sub-critical flux, thus, fouling was not observed until endogenous decay. The observed fouling could be attributed to endogenous decay which was driven by nutrient deficiency at high sludge age and low food-to-microorganisms ratio (decreasing from 0.15 to 0.09 gBOD/gMLVSS.d). Endogenous decay resulted in a sharp decrease of the number of species and evenness between different species (49.7 and 58.9% compared to the inoculum, respectively). The release of dissolved organic matters and cell debris from endogenous decay as well as the excessive growth of filamentous bacteria, e.g. Thiotrichales were the main contributors to membrane fouling. The relative abundance of Thiotrichales significantly correlated with TMP (Pearson R = 0.996, p-value |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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