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PHA production by mixed cultures: A way to valorize wastes from pulp industry

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Apr 2014 Italy Publisher:Elsevier BVJournal:Bioresource Technology, volume 157, pages 197-205 (issn: 0960-8524,

Authors: Diogo Queirós; Simona Rossetti; Luísa S. Serafim;

doi: 10.1016/j.biortech.2014.01.099

pmid: 24556373

PHA production by mixed cultures: A way to valorize wastes from pulp industry

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Abstract

In this work, hardwood spent sulfite liquor (HSSL), a complex feedstock originating from the pulp industry, was tested for the first time as a substrate for polyhydroxyalkanoate (PHA) production by a mixed microbial culture (MMC) under aerobic dynamic feeding (ADF) conditions. A sequencing batch reactor (SBR) fed with HSSL was operated for 67days and the selected MMC reached a maximum PHA content of 67.6%. The MMC demonstrated a differential utilization of the carbon sources present in HSSL. Acetic acid was fully consumed, while xylose and lignosulphonates were partially consumed (30% and 14%, respectively). The selected culture was characterized by Fluorescence in Situ Hybridization (FISH). Bacteria belonging to the three main classes were identified: Alpha- (72.7±4.0%), Beta- (11.1±0.37%) and Gammaproteobacteria (10.3±0.3%). Within Alphaproteobacteria, a small amount of Paracoccus (4.2±0.51%) and Defluvicoccus related to Tetrad Forming Organisms (9.0±0.28%) were detected.

Country

Italy

Related Organizations

Keywords

Biological Oxygen Demand Analysis, Paper, Bacteria, Polyhydroxyalkanoates, Mixed microbial cultures, Industrial Waste, Aerobic dynamic feeding, Oxygen, Kinetics, activate sludge, Bioreactors, FISH, Batch Cell Culture Techniques, Ammonium Compounds, Biomass, HSSL, Acetic Acid

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	67
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%