Effects of hydrothermal pretreatment of sugar beet pulp for methane production

Ziemiński, Krzysztof; Romanowska, Irena; Kowalska-Wentel, Monika; Cyran, M.

doi:10.1016/j.biortech.2014.05.021

Cited by 62 publications

(27 citation statements)

References 32 publications

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“…After completion of the three exchanges of the fermenter working volume after each tested retention time, digested samples (100 ml) were collected for metagenomic analysis. The volume of biogas produced was measured by an electronic flow rate-meter and the methane concentration in gaseous fermentation products was determined by GC, using an Agilent 7890A GC chromatograph (Ziemiński et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Gryta¹,

Oszust²,

Brzezińska³

et al. 2017

International Agrophysics

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A b s t r a c t. The aim of the study was to elucidate the substantial relationship between the compositions of methanogen community that assembles in the anaerobic digester mass and link it to methane production activity. The results of the metagenomic studies were used to evaluate how the methanogen structure changes during an anaerobic digestion process under various waste retention times (21, 23, 25, 29, 33, 39, 47 and 61 days). Phylogenetically coherent populations of methanogens were assessed by 16S rRNA gene next-generation sequencing and terminal restriction fragment length polymorphism fingerprinting of a specific molecular marker, the mcrA gene. The results indicated multiple phylogenetically diverse methanogen populations associated with the various steps of anaerobic digestion. The stages of the anaerobic digestion process and waste retention times determine the microbial composition. The most dominant and acclimated microbial communities in all samples belonged to the genera Methanosaeta and Methanobacterium. The methane yield was consistent with the results of the microbial community structure, which indicated that acetotrophic Methanosaeta was the most active and most important during the methanogenic stage.K e y w o r d s: anaerobic digestion, methanogenic activity, methanogenic Archaea, NGS, t-RFLP

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Section: Methodsmentioning

confidence: 99%

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Gryta¹,

Oszust²,

Brzezińska³

et al. 2017

International Agrophysics

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“…However, it is increasingly converted into bioproducts such as yeast biomass (6) or biogas (2). This study, conducted at Lodz University of Technology, shows for the first time that SBP is also a promising feedstock for lactic acid biosynthesis (7,8).…”

Section: Introductionmentioning

confidence: 91%

“…Sugar beet pulp remains after sucrose extraction from sliced beet roots. It is a valuable renewable source of polysaccharides and its bioconversion has great biotechnological potential (2)(3)(4). Increasingly, lignocellulosic biomass has been used as a substrate in biotechnological processes, mainly for the production of bio-fuels and organic acids.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic Conversion of Sugar Beet Pulp: A Comparison of Simultaneous Saccharification and Fermentation and Separate Hydrolysis and Fermentation for Lactic Acid Production

Berłowska

Cieciura-Włoch

Kalinowska

et al. 2018

Food Technol. Biotechnol.

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SummaryThis study compares the efficiency of lactic acid production by separate hydrolysis and fermentation (SHF) or simultaneous saccharification and fermentation (SSF) of sugar beet pulp (SBP), a by-product of industrial sugar production. In experiments, SBP was hydrolyzed using 5 commercial enzymes. A series of shake flask scale fermentations and was conducted using 5 selected strains of lactic acid bacteria (LAB). The differences in the activities of the enzymes for degrading the principal SBP components were reflected in the different yields of total reducing sugars. The highest yields from hydrolysis and the lowest quantities of insoluble residues were obtained using a mixture (1:1) of Viscozyme and Ultraflo Max. In the SHF process, only a portion of the soluble sugars released by the enzymes from the SBP was assimilated by the LAB strains. In SSF, low enzyme loads revealed reductions in the efficiency of sugar accumulation. The risk of carbon catabolic repression was reduced. Our results suggest www.ftb.com.hrPlease note that this is an unedited version of the manuscript that has been accepted for publication. This version will undergo copyediting and typesetting before its final form for publication. We are providing this version as a service to our readers. The published version will differ from this one as a result of linguistic and technical corrections and layout editing. that SSF has advantages over SHF, including lower processing costs and higher productivity.Lactic acid yield in SSF mode (around 30 g/L) was 80-90 % higher than that for SHF.

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“…This advantage is particularly important when the biomass is stored and not used right following the pre-treatment [6,[83][84][85]. The effect of thermal pre-treatment was extensively investigated in lignocellulosic biomass including, sugarcane, sugar beet pulp, sunflower oil cake and hay [86][87][88][89].…”

Section: Thermal Pre-treatment Techniquementioning

confidence: 99%