Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting
The present study included lab-scale sewage sludge (SS) composting amended by molasses and spent mushroom substrate (SMS) in 5 L composting reactor system. The influence of molasses and SMS amendment on nitrogen loss and humification of SS composting was evaluated. The results showed that SMS amendm...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844020318314 |
| _version_ | 1818898885091786752 |
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| author | Liqiang Meng Weiguang Li Xiancheng Zhang Yi Zhao Li Chen Shumei Zhang |
| author_facet | Liqiang Meng Weiguang Li Xiancheng Zhang Yi Zhao Li Chen Shumei Zhang |
| author_sort | Liqiang Meng |
| collection | DOAJ |
| description | The present study included lab-scale sewage sludge (SS) composting amended by molasses and spent mushroom substrate (SMS) in 5 L composting reactor system. The influence of molasses and SMS amendment on nitrogen loss and humification of SS composting was evaluated. The results showed that SMS amendment, especially combination with molasses raised composting temperature, increased CO2 volatilization, promoted organic matter degradation, improve germination index and humification process. The addition of SMS and molasses contain carbohydrates used as carbon source and energy substance by microorganisms could increase microbial activity and ammonia assimilation. In the SMS + molasses treatments, NH3 volatilization was reduced by 33.1%–37.3% and N2O volatilization was only 17.8%–25.4% of that in the control treatment, furthermore, the nitrogen loss rate was reduced by 27.2%–32.2%. Consequently, the addition of SMS and molasses improved the compost maturity and reduced nitrogen loss in the SS composting process. |
| first_indexed | 2024-12-19T19:39:10Z |
| format | Article |
| id | doaj.art-1dfdde091a844c96af09306fb52240dc |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-19T19:39:10Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-1dfdde091a844c96af09306fb52240dc2022-12-21T20:08:18ZengElsevierHeliyon2405-84402020-09-0169e04988Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge compostingLiqiang Meng0Weiguang Li1Xiancheng Zhang2Yi Zhao3Li Chen4Shumei Zhang5Institute of Microbiology, Heilongjiang Academy of Sciences, 150010, Harbin, China; Institute of Advanced Technology, Heilongjiang Academy of Sciences, 150020, Harbin, ChinaSchool of Environment, Harbin Institute of Technology, 150090, Harbin, China; State Key Laboratory of Urban Water Resource and Enviroment, Harbin Institute of Technology, 150090, Harbin, ChinaInstitute of Microbiology, Heilongjiang Academy of Sciences, 150010, Harbin, ChinaSchool of Environment, Harbin Institute of Technology, 150090, Harbin, ChinaSchool of Environment, Harbin Institute of Technology, 150090, Harbin, ChinaInstitute of Microbiology, Heilongjiang Academy of Sciences, 150010, Harbin, China; Institute of Advanced Technology, Heilongjiang Academy of Sciences, 150020, Harbin, China; Corresponding author.The present study included lab-scale sewage sludge (SS) composting amended by molasses and spent mushroom substrate (SMS) in 5 L composting reactor system. The influence of molasses and SMS amendment on nitrogen loss and humification of SS composting was evaluated. The results showed that SMS amendment, especially combination with molasses raised composting temperature, increased CO2 volatilization, promoted organic matter degradation, improve germination index and humification process. The addition of SMS and molasses contain carbohydrates used as carbon source and energy substance by microorganisms could increase microbial activity and ammonia assimilation. In the SMS + molasses treatments, NH3 volatilization was reduced by 33.1%–37.3% and N2O volatilization was only 17.8%–25.4% of that in the control treatment, furthermore, the nitrogen loss rate was reduced by 27.2%–32.2%. Consequently, the addition of SMS and molasses improved the compost maturity and reduced nitrogen loss in the SS composting process.http://www.sciencedirect.com/science/article/pii/S2405844020318314Environmental analysisEnvironmental engineeringEnvironmental managementEnvironmental pollutionBiotechnologyCompost |
| spellingShingle | Liqiang Meng Weiguang Li Xiancheng Zhang Yi Zhao Li Chen Shumei Zhang Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting Heliyon Environmental analysis Environmental engineering Environmental management Environmental pollution Biotechnology Compost |
| title | Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| title_full | Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| title_fullStr | Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| title_full_unstemmed | Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| title_short | Influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| title_sort | influence of spent mushroom substrate and molasses amendment on nitrogen loss and humification in sewage sludge composting |
| topic | Environmental analysis Environmental engineering Environmental management Environmental pollution Biotechnology Compost |
| url | http://www.sciencedirect.com/science/article/pii/S2405844020318314 |
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