Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation
Sewage sludge was subjected to hydrothermal fueling (HTF) (330 °C for 40 min), obtaining hydrochar at 13.5 MJ kg−1. The higher heating value (HHV) of the raw sludge was related to its fatty acid content. The results showed that although the higher heating value (HHV) of the raw sludge was related to...
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oai:doaj.org-article:aee1a7bb0635485487f65e05a4884dec2021-11-06T11:18:16ZSludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation0273-12231996-973210.2166/wst.2021.281https://doaj.org/article/aee1a7bb0635485487f65e05a4884dec2021-08-01T00:00:00Zhttp://wst.iwaponline.com/content/84/4/880https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Sewage sludge was subjected to hydrothermal fueling (HTF) (330 °C for 40 min), obtaining hydrochar at 13.5 MJ kg−1. The higher heating value (HHV) of the raw sludge was related to its fatty acid content. The results showed that although the higher heating value (HHV) of the raw sludge was related to its fatty acid content, with the intensification of HTF, the increase in aliphatic/cyclic amino acids determined the production of HHV in the hydrochar. In order to increase the content of fatty acids and amino acids, the sludge was fermented. However, the Bacteroidetes consumed the organic matter too early, which was detrimental to the production of HHV. Therefore, appropriate sludge fermentation is recommended to restrict excessive Bacteroidetes proliferation, decompose lipids to saturated fatty acids, and convert proteins to aliphatic/cyclic amino acids to increase the efficiency of converting sludge to fuel. HIGHLIGHTS Hydrochar of 13.5 MJ/kg produced at 330 °C for 40 min can be used as fuel.; HHV of sludge relates to fatty acids, while HHV of hydrochar relates to amino acids.; Saturated fatty acids, aliphatic & cyclic amino acids play a role in HHV production.; Over-proliferation of Bacteroidetes harmful to HHV production is to be controlled.;Jinyi QinRui ZhangRuiwen YangJiao FangYu ZhangXiaoguang LiJunfa GaoIWA Publishingarticleamino acidsbacteroidetesfatty acidshhvhydrothermal fuelingEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 4, Pp 880-891 (2021) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
amino acids bacteroidetes fatty acids hhv hydrothermal fueling Environmental technology. Sanitary engineering TD1-1066 |
| spellingShingle |
amino acids bacteroidetes fatty acids hhv hydrothermal fueling Environmental technology. Sanitary engineering TD1-1066 Jinyi Qin Rui Zhang Ruiwen Yang Jiao Fang Yu Zhang Xiaoguang Li Junfa Gao Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| description |
Sewage sludge was subjected to hydrothermal fueling (HTF) (330 °C for 40 min), obtaining hydrochar at 13.5 MJ kg−1. The higher heating value (HHV) of the raw sludge was related to its fatty acid content. The results showed that although the higher heating value (HHV) of the raw sludge was related to its fatty acid content, with the intensification of HTF, the increase in aliphatic/cyclic amino acids determined the production of HHV in the hydrochar. In order to increase the content of fatty acids and amino acids, the sludge was fermented. However, the Bacteroidetes consumed the organic matter too early, which was detrimental to the production of HHV. Therefore, appropriate sludge fermentation is recommended to restrict excessive Bacteroidetes proliferation, decompose lipids to saturated fatty acids, and convert proteins to aliphatic/cyclic amino acids to increase the efficiency of converting sludge to fuel. HIGHLIGHTS
Hydrochar of 13.5 MJ/kg produced at 330 °C for 40 min can be used as fuel.;
HHV of sludge relates to fatty acids, while HHV of hydrochar relates to amino acids.;
Saturated fatty acids, aliphatic & cyclic amino acids play a role in HHV production.;
Over-proliferation of Bacteroidetes harmful to HHV production is to be controlled.; |
| format |
article |
| author |
Jinyi Qin Rui Zhang Ruiwen Yang Jiao Fang Yu Zhang Xiaoguang Li Junfa Gao |
| author_facet |
Jinyi Qin Rui Zhang Ruiwen Yang Jiao Fang Yu Zhang Xiaoguang Li Junfa Gao |
| author_sort |
Jinyi Qin |
| title |
Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| title_short |
Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| title_full |
Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| title_fullStr |
Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| title_full_unstemmed |
Sludge char-to-fuel approaches based on the hydrothermal fueling IV: fermentation |
| title_sort |
sludge char-to-fuel approaches based on the hydrothermal fueling iv: fermentation |
| publisher |
IWA Publishing |
| publishDate |
2021 |
| url |
https://doaj.org/article/aee1a7bb0635485487f65e05a4884dec |
| work_keys_str_mv |
AT jinyiqin sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT ruizhang sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT ruiwenyang sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT jiaofang sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT yuzhang sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT xiaoguangli sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation AT junfagao sludgechartofuelapproachesbasedonthehydrothermalfuelingivfermentation |
| _version_ |
1718443754215440384 |