Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones
Given the high content of Ca2+ in waste paper recycling wastewater, the anaerobic granular sludge (AnGS) undergoes calcification during wastewater treatment and affects the treatment efficiency. To restore the activity of calcified AnGS and improve the performance of AnGS, four types of N-acyl-homos...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-03-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651320317103 |
| _version_ | 1818736981997256704 |
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| author | Meiling Li Yueru Wu Zhiwei Wang Wencai Fu Wenhao Dang Yongli Chen Yi Ning Shuangfei Wang |
| author_facet | Meiling Li Yueru Wu Zhiwei Wang Wencai Fu Wenhao Dang Yongli Chen Yi Ning Shuangfei Wang |
| author_sort | Meiling Li |
| collection | DOAJ |
| description | Given the high content of Ca2+ in waste paper recycling wastewater, the anaerobic granular sludge (AnGS) undergoes calcification during wastewater treatment and affects the treatment efficiency. To restore the activity of calcified AnGS and improve the performance of AnGS, four types of N-acyl-homoserine lactones (AHLs) were added to the AnGS system while papermaking wastewater treatment. The addition of N-butyryl-DL-homoserine lactone(C4-HSL) and N-octanoyl-DL-homoserine lactone (C8-HSL) had an inhibitory affect the COD removal efficiency and SMA of sludge at the inception. The addition of N-hexanoyl-L-homoserine lactone (C6-HSL) has no obvious effect on the COD removal efficiency, but can improve the SMA of sludge more obviously. The addition of N-(β-ketocaproyl)-DL-homoserine lactone (3O-C6-HSL) can increased COD removal efficiency and promoted SMA together obviously. The addition of C6-HSL and 3O-C6-HSL can increase volatile suspended solid (VSS)/total suspended solid (TSS), and regulate extracellular polymeric substance (EPS) secretion in AnGS. Analysis of microbial sequencing revealed changes in the microbial community structure following AHL addition, which enhanced the methane metabolism pathway in sludge. The addition of C6-HSL, C8-HSL, and 3O-C6-HSL increased Methanosaeta population, thus increasing the aceticlastic pathway in sludge. Thus, exogenous AHLs can play an important role in regulating microbial community structure, and in improving the performance of AnGS. |
| first_indexed | 2024-12-18T00:45:48Z |
| format | Article |
| id | doaj.art-7477ac0b75e942cb951b6f37daf8bb99 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-18T00:45:48Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-7477ac0b75e942cb951b6f37daf8bb992022-12-21T21:26:46ZengElsevierEcotoxicology and Environmental Safety0147-65132021-03-01210111874Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactonesMeiling Li0Yueru Wu1Zhiwei Wang2Wencai Fu3Wenhao Dang4Yongli Chen5Yi Ning6Shuangfei Wang7Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, ChinaGuangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, ChinaGuangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, China; Guangxi Bossco Environment Protection Technology Co., Ltd, Nanning 530007, China; Corresponding author at: Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, ChinaGuangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, ChinaGuangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, Jinan 250353, ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, Jinan 250353, ChinaGuangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Light Industrial and Food Engineering College, Guangxi University, Nanning 530004, China; Corresponding author.Given the high content of Ca2+ in waste paper recycling wastewater, the anaerobic granular sludge (AnGS) undergoes calcification during wastewater treatment and affects the treatment efficiency. To restore the activity of calcified AnGS and improve the performance of AnGS, four types of N-acyl-homoserine lactones (AHLs) were added to the AnGS system while papermaking wastewater treatment. The addition of N-butyryl-DL-homoserine lactone(C4-HSL) and N-octanoyl-DL-homoserine lactone (C8-HSL) had an inhibitory affect the COD removal efficiency and SMA of sludge at the inception. The addition of N-hexanoyl-L-homoserine lactone (C6-HSL) has no obvious effect on the COD removal efficiency, but can improve the SMA of sludge more obviously. The addition of N-(β-ketocaproyl)-DL-homoserine lactone (3O-C6-HSL) can increased COD removal efficiency and promoted SMA together obviously. The addition of C6-HSL and 3O-C6-HSL can increase volatile suspended solid (VSS)/total suspended solid (TSS), and regulate extracellular polymeric substance (EPS) secretion in AnGS. Analysis of microbial sequencing revealed changes in the microbial community structure following AHL addition, which enhanced the methane metabolism pathway in sludge. The addition of C6-HSL, C8-HSL, and 3O-C6-HSL increased Methanosaeta population, thus increasing the aceticlastic pathway in sludge. Thus, exogenous AHLs can play an important role in regulating microbial community structure, and in improving the performance of AnGS.http://www.sciencedirect.com/science/article/pii/S0147651320317103AHLsAnaerobic granular sludgeCalcificationCommunity structurePapermaking wastewater |
| spellingShingle | Meiling Li Yueru Wu Zhiwei Wang Wencai Fu Wenhao Dang Yongli Chen Yi Ning Shuangfei Wang Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones Ecotoxicology and Environmental Safety AHLs Anaerobic granular sludge Calcification Community structure Papermaking wastewater |
| title | Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones |
| title_full | Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones |
| title_fullStr | Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones |
| title_full_unstemmed | Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones |
| title_short | Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones |
| title_sort | improvement in calcified anaerobic granular sludge performance by exogenous acyl homoserine lactones |
| topic | AHLs Anaerobic granular sludge Calcification Community structure Papermaking wastewater |
| url | http://www.sciencedirect.com/science/article/pii/S0147651320317103 |
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