Role of indigenous iron in improving sludge dewaterability through peroxidation.

Zhou, X; Jiang, G; Wang, Q; Yuan, Z

Role of indigenous iron in improving sludge dewaterability through peroxidation.

Zhou, X Jiang, G Wang, Q

Yuan, Z

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Publisher:: NATURE PORTFOLIO
Publication Type:: Journal Article
Citation:: Sci Rep, 2015, 5, (1), pp. 7516
Issue Date:: 2015-01-06

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Field	Value	Language
dc.contributor.author	Zhou, X
dc.contributor.author	Jiang, G
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Yuan, Z
dc.date.accessioned	2024-03-12T14:28:07Z
dc.date.available	2014-11-25
dc.date.available	2024-03-12T14:28:07Z
dc.date.issued	2015-01-06
dc.identifier.citation	Sci Rep, 2015, 5, (1), pp. 7516
dc.identifier.issn	2045-2322
dc.identifier.issn	2045-2322
dc.identifier.uri	http://hdl.handle.net/10453/176596
dc.description.abstract	Improvement of sludge dewaterability is important for reducing the total costs for the treatment and disposal of sludge in wastewater treatment plants. In this study, we investigate the use of hydrogen peroxide as an oxidizing reagent for the conditioning of waste activated sludge. Significant improvement to sludge dewaterability was attained after the addition of hydrogen peroxide at 30 mg/g TS and 28 mg/g TS under acidic conditions (pH = 3.0), with the highest reduction of capillary suction time being 68% and 56%, respectively, for sludge containing an iron concentration of 56 mg Fe/g TS and 25 mg Fe/g TS, respectively. The observations were due to Fenton reactions between the iron contained in sludge (indigenous iron) and hydrogen peroxide. For the sludge with an insufficient level of indigenous iron, the addition of ferrous chloride was found to be able to improve the sludge dewaterability. The results firstly indicated that indigenous iron can be utilized similarly as the externally supplied iron salt to improve sludge dewaterability through catalyzing the Fenton reactions.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PORTFOLIO
dc.relation.ispartof	Sci Rep
dc.relation.isbasedon	10.1038/srep07516
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Catalysis
dc.subject.mesh	Ferrous Compounds
dc.subject.mesh	Hydrogen Peroxide
dc.subject.mesh	Iron
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Water
dc.subject.mesh	Hydrogen Peroxide
dc.subject.mesh	Iron
dc.subject.mesh	Water
dc.subject.mesh	Ferrous Compounds
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Catalysis
dc.subject.mesh	Catalysis
dc.subject.mesh	Ferrous Compounds
dc.subject.mesh	Hydrogen Peroxide
dc.subject.mesh	Iron
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Water
dc.title	Role of indigenous iron in improving sludge dewaterability through peroxidation.
dc.type	Journal Article
utslib.citation.volume	5
utslib.location.activity	England
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	2024-03-12T14:28:04Z
pubs.issue	1
pubs.publication-status	Published online
pubs.volume	5
utslib.citation.issue	1

Abstract:

Improvement of sludge dewaterability is important for reducing the total costs for the treatment and disposal of sludge in wastewater treatment plants. In this study, we investigate the use of hydrogen peroxide as an oxidizing reagent for the conditioning of waste activated sludge. Significant improvement to sludge dewaterability was attained after the addition of hydrogen peroxide at 30 mg/g TS and 28 mg/g TS under acidic conditions (pH = 3.0), with the highest reduction of capillary suction time being 68% and 56%, respectively, for sludge containing an iron concentration of 56 mg Fe/g TS and 25 mg Fe/g TS, respectively. The observations were due to Fenton reactions between the iron contained in sludge (indigenous iron) and hydrogen peroxide. For the sludge with an insufficient level of indigenous iron, the addition of ferrous chloride was found to be able to improve the sludge dewaterability. The results firstly indicated that indigenous iron can be utilized similarly as the externally supplied iron salt to improve sludge dewaterability through catalyzing the Fenton reactions.

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http://hdl.handle.net/10453/176596