https://scholars.lib.ntu.edu.tw/handle/123456789/598581
標題: | Inhibiting effect of quorum quenching on biomass accumulation: A clogging control strategy in gas biofilters | 作者: | Wang Y.-C Wang C Han M.-F Tong Z Lin Y.-T Hu X.-R Deng J.-G Hsi H.-C. HSING-CHENG HSI |
關鍵字: | Biofilm adhesion;Biofiltration;Biomass control;Clogging;Quorum quenching;Adhesion;Biofilms;Biomass;Efficiency;Genes;Quenching;A-stable;Biomass accumulation;Control strategies;Inhibiting effect;Removal efficiencies;Stable operation;Biofilters | 公開日期: | 2022 | 卷: | 432 | 來源出版物: | Chemical Engineering Journal | 摘要: | Controlling excessive biomass is essential for maintaining the long-term stable operation of gas biofilters. Current methods based on physical and chemical technologies can reduce removal efficiency. In this study, we developed a new method using enzymatic-quorum quenching (QQ) to simultaneously control biomass and maintain a stable removal efficiency. A 70-d biofilter operation showed that clogging was controlled with the application of enzymatic-QQ, thereby maintaining a stable operation performance. The pressure drop of the biofilter with QQ enzyme (QQBF) was 75 Pa m?1, while that of the control biofilter (BF) was 156 Pa m?1. Moreover, the biomass accumulation of QQBF was only 130.58 kg m?3, while that of BF was 218.50 kg m?3. Further analysis indicated that enzymatic-QQ decreased biofilm adhesion strength. Accordingly, the biofilm inside the QQBF detached more easily from the filler surface than that in the BF. The 16S rDNA gene sequencing results suggested that the enzymatic-QQ regulated the related functional genes, thereby changing the biofilm characteristics. Moreover, the reduced biofilm thickness and lower inactivated microbes in QQBF enhanced the metabolic activity. Overall, our results demonstrated that QQ is a promising technology for regulating biofilm characteristics and controlling the clogging of gas biofilters. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122289206&doi=10.1016%2fj.cej.2021.134313&partnerID=40&md5=833341f0b424706cb6748932927a0723 https://scholars.lib.ntu.edu.tw/handle/123456789/598581 |
ISSN: | 13858947 | DOI: | 10.1016/j.cej.2021.134313 |
顯示於: | 環境工程學研究所 |
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