Biogas and Methane Yield from Rye Grass

Vítěz, Tomáš; Koutný, Tomáš; Geršl, Milan; Kudělka, Jan; Nitayapat, Nuttakan; Ryant, Pavel; Hejduk, Stanislav; Lošák, Tomáš; Vítězová, Monika; Mareček, Ján

doi:10.11118/actaun201563010143

Cited by 12 publications

(5 citation statements)

References 8 publications

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“…According to their results, 231 ± 5 mL CH4 / g VS was produced from Elodea straw silage. Furthermore, the SMY is as high as the SMY of rye grass silage (249-399 mL CH4 /(g VS *d) [8]) or of swine manure (240 mL CH4 /(g VS *d) [9]). Pure straw silages reach SMYs of 180-300 mL/(g VS *d) [10].…”

Section: Resultsmentioning

confidence: 99%

Anaerobic digestion of mixed silage of waterweed biomass and wheat straw in a long-term semi-continuous biogas production process

et al. 2018

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Background: As part of the maintenance of lakes and rivers, large quantities of aquatic biomass are produced every year. Neophytes, such as Elodea nuttallii, compete with native species and cause a disturbance to the ecosystem, which can manifest itself in the form of eutrophication. Aquatic macrophytes are not in competition with the production of food and animal feed and thus can be used in anaerobic digestion plants to replace a fraction of commonly used renewables such as maize or grass silage. Mixed silage of Elodea biomass with wheat straw was recently developed to allow for the conservation of mowed aquatic biomass. In this paper, the digestibility of this silage was tested in a long-term semi-continuous fermentation experiment with a duration of 212 days. Methods: A continous-stirred tank reactor with a working volume of 31 L was used for the semi-continuous fermentation experiment. The substrate Elodea-straw silage was supplied to the fermenter once a day. The samples of digestates were analyzed directly after sampling twice a week for total solids, volatile solids, VFA/TAC, NH 4 -N, acetate, propionate, butyrate, and water-solutle elements. The biogas composition was determined by means of gas chromatograph once a week.

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Section: Resultsmentioning

confidence: 99%

Anaerobic digestion of mixed silage of waterweed biomass and wheat straw in a long-term semi-continuous biogas production process

et al. 2018

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“…Feedstock is assumed to be equivalent to ryegrass, a grass that can be grown across much of northern Europe and regions with similar climatic conditions, generally analogous to grass produced to support current dairy production. Crop characteristics are dependent on climate, soil conditions, nutrient availability, and harvest regime, however, for the purposes of this study a total solids (TS) content of 22% and a volatile solids (VS) content of 19.6% (or 89% of TS) was considered as being broadly representative of fresh and ensiled ryegrass (Dairy Development Centre, 2014; Parkarinen, Lehtomäki, Rissanen, & Rintala, 2008; Vítěz et al., 2015).…”

Section: Methodsmentioning

confidence: 99%

“…Hydraulic retention time is 45 days. Methane production from pre‐treated ryegrass considered in the study is 78.88 m 3 CH 4 /t wet weight, or 403 m 3 CH 4 /t VS added (Lehtomäki & Björnsson, 2006; Mähnert, Heiermann, & Linke, 2005; Vítěz et al., 2015).…”

Section: Methodsmentioning

confidence: 99%

Utilizing grass for the biological production of polyhydroxyalkanoates (PHAs) via green biorefining: Material and energy flows

Patterson

Massanet‐Nicolau

Jones

et al. 2020

J of Industrial Ecology

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The meat and dairy industry across Europe is dependent on the production of grass. However, faced with competing pressures to reduce the environmental impact of agriculture, a potential future reduction of meat and dairy consumption in western diets, and pressure to minimize food production costs, grass could be used to produce alternative products. The biological production of polyhydroxyalkanoates (PHA) by using grass as the primary carbon source in a novel mixed culture process has been studied. A total of 30,000 t of fresh grass would yield approximately 403.65 t of dried biopolymer granules. On the basis of this early stage, non‐optimized process, the cumulative energy demand (CED) of PHA produced from waste grass and cultivated grass was found to be 248.4 MJ/kg and 271.8 MJ/kg, respectively, which is the same order of magnitude as fossil‐carbon‐based polymers. Improvements in volatile fatty acid yields, reduction in chemical and water inputs, and using residues to make other products will reduce the CED. Given the future requirement to produce polymers with little or no fossil‐carbon feedstock, an optimized version of the process could provide a viable future production option that also contributes to the long‐term sustainability of agricultural communities.

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“…In order to obtain maximum biogas yield, some parameters have to be considered when selecting a catch crop for biogas production, namely the crop species, the soil characteristics, the weather conditions, harvest time, the dry matter content, and the nitrogen application. All these parameters have direct impact on maximum biogas yield per kg of ODM (VÍTĚZ et al, 2015).…”

Section: Biogas Yieldmentioning

confidence: 99%

Genotype × year interaction on rye productivity parameters cultivated on sandy chernozem soil

et al. 2022

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Rye is a dual-purpose crop, for nutrition but also for bioenergy. The selection of rye is aimed at its improvement as a plant for human and animal consumption, but also it is interesting for bioenergy production as it combines high biomass production with low environmental impact. There is a growing demand for sustainable sources of biomass worldwide. Directions for achieving rye selection for energy purposes include selection to increase biomass yield and corresponding physiological properties. During three years (2019-2021), four rye genotypes were examined. The aim of this study was to examine the influence of genotype (G), year (Y) and their interaction (G?Y) on rye productivity parameters: plant height (PH), spike length (SL), 1000-grain weight (TGW), hectoliter mass (HM), green biomass yield (GBY), biogas yield (BGY) as well as the possibility of using rye as an alternative fuel. Rye is an excellent raw material for the production of healthy food, but also for the production of biofuels. The study discussed the potential use of four high yielding genotypes for biofuel production. Genotype G1 (25.29 t ha-1) had a statistically significantly higher average green biomass yield compared to genotypes G2, G3 and G4 (22.98 t ha-1, 23.56 t ha-1 and 23.76 t ha-1). Significant G?Y interactions demonstrate differences between rye genotypes in response to environmental conditions. Plant height was directly proportional to biomass yield. As one of the targets in breeding programs, to develop taller cultivars as biofuel feedstock. Screening and selection of appropriate rye varieties for each region is critical for optimum results.

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Biogas and Methane Yield from Rye Grass

Cited by 12 publications

References 8 publications

Anaerobic digestion of mixed silage of waterweed biomass and wheat straw in a long-term semi-continuous biogas production process

Anaerobic digestion of mixed silage of waterweed biomass and wheat straw in a long-term semi-continuous biogas production process

Utilizing grass for the biological production of polyhydroxyalkanoates (PHAs) via green biorefining: Material and energy flows

Genotype × year interaction on rye productivity parameters cultivated on sandy chernozem soil

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