Urine pretreatment significantly promotes methane production in anaerobic waste activated sludge digestion.
- Publisher:
- Elsevier
- Publication Type:
- Journal Article
- Citation:
- Science of the Total Environment, 2022, 853, pp. 158684-158684
- Issue Date:
- 2022-12-20
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Urine pretreatment significantly promotes methane production in anaerobic waste activated sludge digestion.pdf | Accepted version | 1.24 MB | Adobe PDF |
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author | Liu, H | |
dc.contributor.author |
Li, X https://orcid.org/0000-0003-1768-9556 |
|
dc.contributor.author | Zhang, Z | |
dc.contributor.author | Nghiem, LD | |
dc.contributor.author |
Wang, Q https://orcid.org/0000-0002-5744-2331 |
|
dc.date.accessioned | 2023-02-01T04:22:12Z | |
dc.date.available | 2022-09-07 | |
dc.date.available | 2023-02-01T04:22:12Z | |
dc.date.issued | 2022-12-20 | |
dc.identifier.citation | Science of the Total Environment, 2022, 853, pp. 158684-158684 | |
dc.identifier.issn | 0048-9697 | |
dc.identifier.issn | 1879-1026 | |
dc.identifier.uri | http://hdl.handle.net/10453/165777 | |
dc.description.abstract | Methane production of waste activated sludge (WAS) in anaerobic digestion is hindered due to the rate-limited hydrolysis process and the low methane potential of WAS. Pretreatment of WAS is a common and appealing strategy to improve methane production in anaerobic digestion. In this study, we proposed to use urine, an easily obtained human waste with high ammonium concentration and pH, as a novel pretreatment strategy for anaerobic WAS digestion. Urine pretreatment at levels of 5-30 % (Vurine/Vurine+WAS) could substantially enhance methane production by 5-35 % in biochemical methane potential (BMP) tests, with the highest methane production of 179.6 ± 3.3 mL/g volatile solids (VS) achieved under the highest level of urine (i.e. 30 % urine addition). Based on the model analysis, the biochemical methane potential (B0) and hydrolysis rate of WAS (k) rose from 131.9 mL/g VS and 0.19 d-1 in the control without pretreatment to 136.3-178.2 mL/g VS and 0.22-0.30 d-1, respectively, after the urine pretreatment (5-30 % addition). Urine pretreatment with 5-30 % addition also improved the degradation extent (Y) of WAS by 3-35 %. The promising results indicate that urine pretreatment in anaerobic digestion is a promising technology to improve the efficiency of anaerobic digestion with environmental and economic benefits. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | Elsevier | |
dc.relation | http://purl.org/au-research/grants/arc/DP200100933 | |
dc.relation | http://purl.org/au-research/grants/arc/FT200100264 | |
dc.relation.ispartof | Science of the Total Environment | |
dc.relation.isbasedon | 10.1016/j.scitotenv.2022.158684 | |
dc.rights | info:eu-repo/semantics/embargoedAccess | |
dc.subject.classification | Environmental Sciences | |
dc.subject.mesh | Ammonium Compounds | |
dc.subject.mesh | Anaerobiosis | |
dc.subject.mesh | Bioreactors | |
dc.subject.mesh | Digestion | |
dc.subject.mesh | Humans | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Waste Disposal, Fluid | |
dc.subject.mesh | Humans | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Anaerobiosis | |
dc.subject.mesh | Waste Disposal, Fluid | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Ammonium Compounds | |
dc.subject.mesh | Digestion | |
dc.subject.mesh | Bioreactors | |
dc.subject.mesh | Humans | |
dc.subject.mesh | Ammonium Compounds | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Bioreactors | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Waste Disposal, Fluid | |
dc.subject.mesh | Anaerobiosis | |
dc.subject.mesh | Digestion | |
dc.title | Urine pretreatment significantly promotes methane production in anaerobic waste activated sludge digestion. | |
dc.type | Journal Article | |
utslib.citation.volume | 853 | |
utslib.location.activity | Netherlands | |
pubs.organisational-group | /University of Technology Sydney | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Engineering and Information Technology | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering | |
pubs.organisational-group | /University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment | |
utslib.copyright.status | embargoed | * |
pubs.consider-herdc | false | |
utslib.copyright.embargo | 2024-12-20T00:00:00+1000Z | |
dc.date.updated | 2023-02-01T04:22:05Z | |
pubs.publication-status | Published | |
pubs.volume | 853 |
Abstract:
Methane production of waste activated sludge (WAS) in anaerobic digestion is hindered due to the rate-limited hydrolysis process and the low methane potential of WAS. Pretreatment of WAS is a common and appealing strategy to improve methane production in anaerobic digestion. In this study, we proposed to use urine, an easily obtained human waste with high ammonium concentration and pH, as a novel pretreatment strategy for anaerobic WAS digestion. Urine pretreatment at levels of 5-30 % (Vurine/Vurine+WAS) could substantially enhance methane production by 5-35 % in biochemical methane potential (BMP) tests, with the highest methane production of 179.6 ± 3.3 mL/g volatile solids (VS) achieved under the highest level of urine (i.e. 30 % urine addition). Based on the model analysis, the biochemical methane potential (B0) and hydrolysis rate of WAS (k) rose from 131.9 mL/g VS and 0.19 d-1 in the control without pretreatment to 136.3-178.2 mL/g VS and 0.22-0.30 d-1, respectively, after the urine pretreatment (5-30 % addition). Urine pretreatment with 5-30 % addition also improved the degradation extent (Y) of WAS by 3-35 %. The promising results indicate that urine pretreatment in anaerobic digestion is a promising technology to improve the efficiency of anaerobic digestion with environmental and economic benefits.
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