Multivariate assessment of activated sludge stability in lab-scale experiments

Autor:	P. Van den Kerkhof, R. Van den Broeck, J.F. Van Impe, Geert Gins
Rok vydání:	2013
Předmět:	Reproducibility Multivariate statistics Analytical chemistry Univariate Experimental data Bioengineering Applied Microbiology and Biotechnology Biochemistry Stability (probability) Activated sludge Wastewater Principal component analysis Biological system Mathematics
Zdroj:	Process Biochemistry. 48:1789-1793
ISSN:	1359-5113
DOI:	10.1016/j.procbio.2013.07.016
Popis:	In wastewater research, the transfer of activated sludge from large-scale plants to lab-scale reactors induces a transient period. It is crucial to quantitatively assess the stability of activated sludge before starting any experimental procedure. Otherwise, the transient interferes with the experimental results, jeopardizing reproducibility and accuracy. This paper presents a novel multivariate technique to assess activated sludge stability based on the combination of principal component analysis (PCA) with the squared prediction error (SPE) statistic. The proposed method allows for a more accurate estimation of activated sludge stability than existing univariate methods and also eliminates the need to establish thresholds for every single variable. The procedure is validated on experimental data obtained by Van den Broeck et al. [1]. © 2013 Elsevier Ltd. publisher: Elsevier articletitle: Multivariate assessment of activated sludge stability in lab-scale experiments journaltitle: Process Biochemistry articlelink: http://dx.doi.org/10.1016/j.procbio.2013.07.016 content_type: article copyright: Copyright © 2013 Elsevier Ltd. All rights reserved. ispartof: Process Biochemistry vol:48 issue:11 pages:1789-1793 status: published
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21577a6b2887da55ad16d8404323b5ec https://doi.org/10.1016/j.procbio.2013.07.016 Zobrazit plný text záznamu Full Text from ScienceDirect