Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/9467

TitleContinuous high rate anaerobic treatment of oleic acid based wastewater is possible after a step feeding start-up
Author(s)Cavaleiro, A. J.
Salvador, A. F.
Alves, J. I.
Alves, M. M.
Issue dateApr-2009
PublisherAmerican Chemical Society
JournalEnvironmental Science and Technology
Citation“Environmental Science and Technology”. ISSN 0013-936X. 43:8 (2009) 2931–2936.
Abstract(s)Mineralization of a synthetic effluent containing 50% COD as oleic acid was achieved in a continuous anaerobic reactor at organic loading rates up to 21 kg COD m−3 day−1, HRT of 9 h, attaining 99% of COD removal efficiency and a methane yield higher than 70%. A maximum specific methane production rate of 1170 ± 170 mg COD-CH4 g VS−1 day−1 was measured during the reactor’s operation. A start-up strategy combining feeding phases and batch degradation phases was applied to promote the development of an anaerobic community efficient for long chain fatty acids (LCFA) mineralization. Through the start-up period, the methane yield increased gradually from 67% to 91%, and LCFA accumulated onto the sludge only during the first 60 days of operation. For the first time, it is demonstrated that a step feeding start-up is required to produce a specialized and efficient anaerobic community for continuous high rate anaerobic treatment of LCFA-rich wastewater.
TypeArticle
URIhttp://hdl.handle.net/1822/9467
DOI10.1021/es8031264
ISSN0013-936X
Publisher versionhttp://pubs.acs.org/doi/full/10.1021/es8031264
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
Cavaleiro_EST.pdf530,46 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID