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dc.contributor.author
Sam, Stanley Bortse
dc.contributor.author
Morgenroth, Eberhard
dc.contributor.author
Strande, Linda
dc.date.accessioned
2023-10-23T09:20:12Z
dc.date.available
2023-10-23T03:40:37Z
dc.date.available
2023-10-23T09:20:12Z
dc.date.issued
2023-09-01
dc.identifier.issn
2043-9083
dc.identifier.other
10.2166/washdev.2023.086
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/637814
dc.identifier.doi
10.3929/ethz-b-000637814
dc.description.abstract
Reliable dewatering performance remains a key challenge in fecal sludge management, and the controlling factors or mechanisms are not well understood. There remain limited studies on constituents in feces and fecal sludge and how they affect the dewaterability of fecal sludge. This study aimed at evaluating a range of constituents in feces, and to gain empirical knowledge toward a mechanistic understanding of how they influence dewaterability. In this study, cellulose reduced capillary suction time, decreased supernatant turbidity, and increased cake solids. While hemicellulose decreased supernatant turbidity, lignin increased supernatant turbidity, capillary suction time, and cake solids. Extracellular polymeric substances (EPS) increased both capillary suction time and supernatant turbidity and decreased cake solids, whereas lipids increased turbidity. Cations had no significant effect on dewatering properties. Overall, fecal sludge stored in contain-ments had better dewatering performance than ‘fresh’ fecal sludge, which was attributed to stabilization. Field fecal sludge had a higher relative abundance of Pseudomonas, which is associated with better aggregation, and fewer small particles (,10 μm) that clog filters to reduce dewatering performance. Further understanding of stabilization and developing an agreed-upon metrics of stabilization are essential for predicting fecal sludge dewatering performance, and developing smaller footprint dewatering treatment technologies.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
IWA Publishing
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Microbial community
en_US
dc.subject
Organic fibers
en_US
dc.subject
Settling performance
en_US
dc.subject
Stabilization
en_US
dc.subject
Water-holding capacity
en_US
dc.title
Changes in organic fractions, cations, and stabilization from feces to fecal sludge: implications for dewatering performance and management solutions
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2023-08-28
ethz.journal.title
Journal of Water, Sanitation & Hygiene for Development
ethz.journal.volume
13
en_US
ethz.journal.issue
9
en_US
ethz.pages.start
699
en_US
ethz.pages.end
710
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03832 - Morgenroth, Eberhard / Morgenroth, Eberhard
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03832 - Morgenroth, Eberhard / Morgenroth, Eberhard
ethz.relation.isSourceOf
10.3929/ethz-b-000649497
ethz.date.deposited
2023-10-23T03:40:37Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-10-23T09:20:13Z
ethz.rosetta.lastUpdated
2024-02-03T05:28:56Z
ethz.rosetta.versionExported
true
ethz.COinS
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