Publikation:
Quantification and characterisation of activated carbon in activated sludge by thermogravimetric and evolved gas analyses

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dc.contributor.authorBraun, Ulrike
dc.contributor.authorDittmann, Daniel
dc.contributor.authorJekel, Martin
dc.contributor.authorRuhl, Aki Sebastian
dc.date.accessioned2024-06-16T14:56:21Z
dc.date.available2024-06-16T14:56:21Z
dc.date.issued2018
dc.description.abstractAdvanced wastewater treatment with powdered activated carbon (PAC) leads to a spread of PAC into different purification stages of wastewater treatment plants (WWTP) due to recirculation and filter back-wash. Currently, no methods for quantification of PAC in activated sludge are available. In this study, PAC containing activated sludge from four WWTP were examined by two-step thermogravimetric analysis (TGA) with heating up to 600˚C in N2 and subsequently in synthetic air. Direct quantification of PAC according to temperature specific weight losses was possible for one WWTP. Quantification by combining specific mass losses was found to be an alternative direct method, with a detection limit of 1.2% PAC in dry sample mass. Additionally, evolved gas analysis (EGA) by infrared-spectroscopy (FTIR) during TGA revealed interaction mechanisms between PAC and activated sludge. Aliphatic compounds from activated sludge were identified as major substances influenced by PAC. In derivative thermogravimetry (DTG), a typical double peak at approximately 300˚C was found to be related to carbonylic species with increased evolution of acetic acid in aged activated sludge. TGA and EGA are promising tools to understand, control and optimise the application of PAC in advanced wastewater treatment. © 2018 Elsevier Ltd. All rights reserved.en
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-2154
dc.identifier.urihttps://openumwelt.de/handle/123456789/5640
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectKläranlage
dc.titleQuantification and characterisation of activated carbon in activated sludge by thermogravimetric and evolved gas analyses
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleJournal of environmental chemical engineering
local.bibliographicCitation.originalDOI10.1016/j.jece.2018.03.010
local.bibliographicCitation.volume6 (2018), Heft 2, 1 Onlineressource (Pages 2222-2231)
local.collectionAufsätze
local.contributor.authorId00270121
local.contributor.authorId00258217
local.identifier.catalogId02463646
local.ingest.leader04819naa a2200000uu 4500
local.jointTitleQUANTIFICATION AND CHARACTERISATION OF ACTIVATED CARBON IN ACTIVATED SLUDGE BY THERMOGRAVIMETRIC AND EVOLVED GAS ANALYSES
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relation.isAuthorOfPublication016141f9-ff98-45ad-b773-c32c28869f00
relation.isAuthorOfPublication94c1139a-1828-4d1c-bf3e-f6f519e3d4e8
relation.isAuthorOfPublication.latestForDiscovery016141f9-ff98-45ad-b773-c32c28869f00
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