Combined Effect of Free Nitrous Acid Pretreatment and Sodium Dodecylbenzene Sulfonate on Short-Chain Fatty Acid Production from Waste Activated Sludge.
- Publisher:
- NATURE PUBLISHING GROUP
- Publication Type:
- Journal Article
- Citation:
- Sci Rep, 2016, 6, (1), pp. 21622
- Issue Date:
- 2016-02-12
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Field | Value | Language |
---|---|---|
dc.contributor.author | Zhao, J | |
dc.contributor.author |
Liu, Y |
|
dc.contributor.author |
Ni, B |
|
dc.contributor.author |
Wang, Q |
|
dc.contributor.author | Wang, D | |
dc.contributor.author | Yang, Q | |
dc.contributor.author | Sun, Y | |
dc.contributor.author | Zeng, G | |
dc.contributor.author | Li, X | |
dc.date.accessioned | 2023-03-23T22:52:47Z | |
dc.date.available | 2016-01-20 | |
dc.date.available | 2023-03-23T22:52:47Z | |
dc.date.issued | 2016-02-12 | |
dc.identifier.citation | Sci Rep, 2016, 6, (1), pp. 21622 | |
dc.identifier.issn | 2045-2322 | |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | http://hdl.handle.net/10453/168264 | |
dc.description.abstract | Free nitrous acid (FNA) serving as a pretreatment is an effective approach to accelerate sludge disintegration. Also, sodium dodecylbenzene sulfonate (SDBS), a type of surfactants, has been determined at significant levels in sewage sludge, which thereby affects the characteristics of sludge. Both FNA pretreatment and sludge SDBS levels can affect short-chain fatty acid (SCFA) generation from sludge anaerobic fermentation. To date, however, the combined effect of FNA pretreatment and SDBS presence on SCFA production as well as the corresponding mechanisms have never been documented. This work therefore aims to provide such support. Experimental results showed that the combination of FNA and SDBS treatment not only improved SCFA accumulation but also shortened the fermentation time. The maximal SCFA accumulation of 334.5 mg chemical oxygen demand (COD)/g volatile suspended solids (VSS) was achieved at 1.54 mg FNA/L treatment and 0.02 g/g dry sludge, which was respectively 1.79-fold and 1.41-fold of that from FNA treatment and sludge containing SDBS alone. Mechanism investigations revealed that the combined FNA pretreatment and SDBS accelerated solubilization, hydrolysis, and acidification steps but inhibited the methanogenesis. All those observations were in agreement with SCFA enhancement. | |
dc.format | Electronic | |
dc.language | eng | |
dc.publisher | NATURE PUBLISHING GROUP | |
dc.relation.ispartof | Sci Rep | |
dc.relation.isbasedon | 10.1038/srep21622 | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject.mesh | Benzenesulfonates | |
dc.subject.mesh | Dextrans | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Nitrous Acid | |
dc.subject.mesh | Serum Albumin | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Nitrous Acid | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Benzenesulfonates | |
dc.subject.mesh | Dextrans | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.subject.mesh | Serum Albumin | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Benzenesulfonates | |
dc.subject.mesh | Dextrans | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Methane | |
dc.subject.mesh | Nitrous Acid | |
dc.subject.mesh | Serum Albumin | |
dc.subject.mesh | Sewage | |
dc.title | Combined Effect of Free Nitrous Acid Pretreatment and Sodium Dodecylbenzene Sulfonate on Short-Chain Fatty Acid Production from Waste Activated Sludge. | |
dc.type | Journal Article | |
utslib.citation.volume | 6 | |
utslib.location.activity | England | |
utslib.for | 0904 Chemical Engineering | |
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 | open_access | * |
dc.date.updated | 2023-03-23T22:52:44Z | |
pubs.issue | 1 | |
pubs.publication-status | Published online | |
pubs.volume | 6 | |
utslib.citation.issue | 1 |
Abstract:
Free nitrous acid (FNA) serving as a pretreatment is an effective approach to accelerate sludge disintegration. Also, sodium dodecylbenzene sulfonate (SDBS), a type of surfactants, has been determined at significant levels in sewage sludge, which thereby affects the characteristics of sludge. Both FNA pretreatment and sludge SDBS levels can affect short-chain fatty acid (SCFA) generation from sludge anaerobic fermentation. To date, however, the combined effect of FNA pretreatment and SDBS presence on SCFA production as well as the corresponding mechanisms have never been documented. This work therefore aims to provide such support. Experimental results showed that the combination of FNA and SDBS treatment not only improved SCFA accumulation but also shortened the fermentation time. The maximal SCFA accumulation of 334.5 mg chemical oxygen demand (COD)/g volatile suspended solids (VSS) was achieved at 1.54 mg FNA/L treatment and 0.02 g/g dry sludge, which was respectively 1.79-fold and 1.41-fold of that from FNA treatment and sludge containing SDBS alone. Mechanism investigations revealed that the combined FNA pretreatment and SDBS accelerated solubilization, hydrolysis, and acidification steps but inhibited the methanogenesis. All those observations were in agreement with SCFA enhancement.
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