Enzymatic pretreatment of lignocellulosic wastes to improve biogas production

Ziemiński, Krzysztof; Romanowska, Irena; Kowalska, Monika

doi:10.1016/j.wasman.2012.01.016

Cited by 121 publications

(52 citation statements)

References 29 publications

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“…Moreover, exploiting, processing and combusting of these fossil fuels represent a dangerous threat to the already weak environment. In the present face of fast economic growth and technological advancement, satisfying the demand for energy without further deterioration of the environment would require the deliberate development of low emission, alternative energy systems [31]. Biogas production from anaerobic digestion seems to be a right technology for solving the above listed problems.…”

Section: Introductionmentioning

confidence: 99%

The effect of organic loading rates (OLRs) on the performances of food wastes and maize husks anaerobic co-digestion in continuous mode

Owamah

Izinyon

2015

Sustainable Energy Technologies and Assessments

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a b s t r a c tA continuous anaerobic digestion experiment was carried out to investigate the co-digestion of 75% food waste and 25% maize husk at different organic loading rates (OLRs) of 1-4.5 gVS/L/d. Results obtained showed that pH fluctuated between 7.3 and 7.5 and total alkalinity (TA) between 0.4 and 6.7 g CaCO3/L, indicating that the system was not inhibited by acidification. The range of the ratio of volatile fatty acid (VFA) to TA of 0.06-0.25 was also well below 0.4 and showed that the anaerobic co-digestion was stable and feasible. Though there was no significant difference (p < 0.05) between biogas yields at OLRs of 3.5 and 4.5 gVS/L/d, the methane content at OLR of 4.5 gVS/L/d was higher than that of 3.5 gVS/L/d and suggests that carbon dioxide producing microorganisms were more active in OLR of 3.5 gVS/L/d. The OLR of 4.5 gVS/L/d was therefore found to be the most satisfactory for large scale operation of anaerobic digesters for co-digestion of food waste and maize husk. From a separate batch test, the average biogas yield of 0.50 ± 0.04, 0.24 ± 0.02 and 1.31 ± 0.07 L/gVS were obtained from digesters A, B and C, respectively, indicating that the addition of maize husk to digester C significantly improved the production of biogas from food waste when compared to the biogas yield of digester A that contained food waste alone. Digester B with 100% maize husk was by far the least performed digester.

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Section: Introductionmentioning

confidence: 99%

The effect of organic loading rates (OLRs) on the performances of food wastes and maize husks anaerobic co-digestion in continuous mode

Owamah

Izinyon

2015

Sustainable Energy Technologies and Assessments

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“…Thermochemical pre-treatment (e.g. blanching or pressure cooking with acid addition) is necessary to remove most of the lignin and to ease cellulase action on cellulose and hemicellulose, so that the microorganisms can then use the cellulose and hemicellulose portions as a carbon source (Pessoa et al, 1996(Pessoa et al, , 1997Zieminski et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Utilisation of sugar beet bagasse for the biosynthesis of yeast SCP

Patelski

Berłowska

Dziugan

et al. 2015

Journal of Food Engineering

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“…Generally, pretreatments are utilized to increase methane production (14). Schimpf and Valbuena, as well as Ziemiń ski et al (36,37), tested the enzymatic pretreatment of lignocellulosic biomass, which generated an ϳ20% increase in methane production over that with nonpretreated biomass. Grala et al carried out studies with macroalgal biomass (Pilayella, Ectocarpus, and Enteromorpha) using a commercial multienzyme complex as a pretreatment; the amount of methane generated from pretreated biomass was 63.63% higher than that from nonpretreated biomass (38).…”

Section: Discussionmentioning

confidence: 99%

Use of Cellulolytic Marine Bacteria for Enzymatic Pretreatment in Microalgal Biogas Production

Muñoz

Hidalgo

Zapata

et al. 2014

Appl Environ Microbiol

101

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In this study, we designed and evaluated a microalgal pretreatment method using cellulolytic bacteria that naturally degrades microalgae in their native habitat. Bacterial strains were isolated from each of two mollusk species in a medium containing 1% carboxymethyl cellulose agar. We selected nine bacterial strains that had endoglucanase activity: five strains from Mytilus chilensis, a Chilean mussel, and four strains from Mesodesma donacium, a clam found in the Southern Pacific. These strains were identified phylogenetically as belonging to the genera Aeromonas, Pseudomonas, Chryseobacterium, and Raoultella. The cellulase-producing capacities of these strains were characterized, and the degradation of cell walls in Botryococcus braunii and Nannochloropsis gaditana was tested with "whole-cell" cellulolytic experiments. Aeromonas bivalvium MA2, Raoultella ornithinolytica MA5, and Aeromonas salmonicida MC25 degraded B. braunii, and R. ornithinolytica MC3 and MA5 degraded N. gaditana. In addition, N. gaditana was pretreated with R. ornithinolytica strains MC3 and MA5 and was then subjected to an anaerobic digestion process, which increased the yield of methane by 140.32% and 158.68%, respectively, over that from nonpretreated microalgae. Therefore, a "whole-cell" cellulolytic pretreatment can increase the performance and efficiency of biogas production.

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Enzymatic pretreatment of lignocellulosic wastes to improve biogas production

Cited by 121 publications

References 29 publications

The effect of organic loading rates (OLRs) on the performances of food wastes and maize husks anaerobic co-digestion in continuous mode

The effect of organic loading rates (OLRs) on the performances of food wastes and maize husks anaerobic co-digestion in continuous mode

Utilisation of sugar beet bagasse for the biosynthesis of yeast SCP

Use of Cellulolytic Marine Bacteria for Enzymatic Pretreatment in Microalgal Biogas Production

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