scholarly journals Biogas and Methane Yield from Rye Grass

2015 ◽  
Vol 63 (1) ◽  
pp. 143-146 ◽  
Author(s):  
Tomáš Vítěz ◽  
Tomáš Koutný ◽  
Milan Geršl ◽  
Jan Kudělka ◽  
Nuttakan Nitayapat ◽  
...  
Keyword(s):  
Dry Matter ◽  
Biogas Production ◽  
Lolium Multiflorum ◽  
Solid Content ◽  
Methane Yield ◽  
Biogas Yield ◽  
Grass Silage ◽  
Rye Grass ◽  
Two Samples ◽  
Solids Content

Biogas production in the Czech Republic has expanded substantially, including marginal regions for maize cultivation. Therefore, there are increasingly sought materials that could partially replace maize silage, as a basic feedstock, while secure both biogas production and its quality.Two samples of rye grass (Lolium multiflorum var. westerwoldicum) silage with different solids content 21% and 15% were measured for biogas and methane yield. Rye grass silage with solid content of 15% reached an average specific biogas yield 0.431 m3·kg−1 of organic dry matter and an average specific methane yield 0.249 m3·kg−1 of organic dry matter. Rye grass silage with solid content 21% reached an average specific biogas yield 0.654 m3·kg−1 of organic dry matter and an average specific methane yield 0.399 m3·kg−1 of organic dry matter.

scholarly journals Silage Maize and Sugar Beet for Biogas Production in Rotations and Continuous Cultivation: Dry Matter and Estimated Methane Yield

Agronomy ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 2 ◽  
Author(s):  
Wiebke Brauer-Siebrecht ◽  
Anna Jacobs ◽  
Olaf Christen ◽  
Philipp Götze ◽  
Heinz-Josef Koch ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Biogas Production ◽  
Continuous Cultivation ◽  
Methane Yield ◽  
Silage Maize

Biogas production from silage maize hybrids

2011 ◽  
Vol 59 (3) ◽  
pp. 223-229
Author(s):  
Z. Hegyi ◽  
Z. Zsubori-Tóth ◽  
J. Pintér ◽  
C. Marton
Keyword(s):  
Dry Matter ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Starch Content ◽  
Sugar Content ◽  
Grain Filling ◽  
Strong Positive Correlation ◽  
Vegetative Period ◽  
Positive Correlation ◽  
Biogas Yield

Experiments have been underway in Martonvásár for many years to develop leafy silage hybrids, which have a greater aboveground mass than conventional silage hybrids. The best hybrids for biogas production would be those that produce a large quantity of biomass and are rich in starch. The chief characteristic of leafy hybrids is that they have more leaves than normal hybrids. Due to this enhanced leaf area above the ear, the vegetative period of leafy genotypes is shorter, while the grain-filling period is longer, which has a positive effect on both yield and grain quality. The results of the present experiment show that during the anaerobic fermentation of the silage, leafy hybrids produced more biogas (640 l per 1000 g dry matter) than conventional hybrids (606 l per 1000 g dry matter). There were no significant differences between the methane contents of the leafy and non-leafy hybrids tested in the experiment. A strong positive correlation was found between biogas yield and the starch content of the silage, and a moderate positive correlation between biogas yield and the sugar content. The correlation between biogas yield and the lignin and protein contents was negative, in accordance with other literary data.

A Study on Dry Anaerobic Fermentation Technology of Pineapple Leaf Residue

2011 ◽  
Vol 236-238 ◽  
pp. 178-182
Author(s):  
Yi Guo Deng ◽  
Jin Li Wang ◽  
Jing Jiao ◽  
Yong Zheng ◽  
Gang Wang ◽  
...  
Keyword(s):  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Orthogonal Experiment ◽  
Gas Production ◽  
Inoculum Size ◽  
Solid Content ◽  
Raw Material ◽  
Biogas Yield ◽  
Fermentation Temperature ◽  
Leaf Residue

A self-designed constant temperature fermenter was manufactured and used for this study. Dry anaerobic fermentation experiments were conducted with sugarcane leaf residue as raw material. With the C/N ratio being 25:1, various total solids concentrations (TS), inoculum sizes and fermentation temperatures were selected to study biogas production characteristics. The experiment results showed that biogas yield increased rapidly during the initial stage of reaction, decreased quickly after reaching the peak, and the decrease slowed down at some level. Orthogonal experiment results showed that both fermentation temperature and solids concentration showed significant effects on gas production yield. Fermentation temperature showed the most significant effect, while the effect of inoculum size was not significant on gas yield. The optimum fermentation performance was obtained at 20% solid content, 35°C fermentation temperature, and 30% inoculum size.

Characteristics of Mixed Fermentation by Alternanthera Philoxeroides and Corn Stalk for Biogas Production

2013 ◽  
Vol 805-806 ◽  
pp. 208-214
Author(s):  
Hui Huang ◽  
Yuan Fang Deng ◽  
Zhi Peng Cheng ◽  
Ning Xu ◽  
Ji Ming Xu
Keyword(s):  
Dry Matter ◽  
Degradation Rate ◽  
Biogas Production ◽  
Rate Of Change ◽  
Methane Content ◽  
Alternanthera Philoxeroides ◽  
Alien Invasive Species ◽  
Corn Stalk ◽  
Mixed Fermentation ◽  
Biogas Yield

In order to alleviate the shortage of raw materials in rural household biogas production and promote utilization of the formidable alien invasive species-alternanthera philoxeroides, mixed fermentation by alternanthera philoxeroides and corn stalk was designed and the performance was investigated in separated and different dry matter ratios (18.33, 6.25 and 3.46) treatments, by batch model at (35±1)°C.Results indicated that, the best biogas production appeared in the treatment of dry matter ratio of 6.25 when total solid (TS) loading of raw material was 8% and inoculating amount of biogas slurry was 20%, with TS and volatile solid (VS) biogas yields, and methane content of 325.74±5.11 mL/g, 456.06±4.87 mL/g and 60.56±1.23 %, respectively. Highly significant positive correlations (p˂0.01) were found between degradation rate of VS and four indexes such as average daily biogas yield, TS biogas yield, VS biogas yield and rate of change of total organic carbon (TOC) of fermentation liquid, while positive correlation between degradation rate of VS and methane content, and negative correlation between it and rate of change of volatile fatty acid (VFA), were not significant (p>0.05). Mixed fermentation by alternanthera philoxeroides and corn stalk could improve biogas production and achieve the gas peak in advance, therefore it had good feasibility.

scholarly journals Uptake of soil P, Al, Fe, Mn, Mg and Ca by Italian rye grass (Lolium multiflorum Lam.) induced by synthetic chelating agent

1981 ◽  
Vol 53 (3) ◽  
pp. 152-160
Author(s):  
Helinä Hartikainen
Keyword(s):  
Dry Matter ◽  
Ethylenediaminetetraacetic Acid ◽  
Lolium Multiflorum ◽  
Mineral Soil ◽  
Chelating Agent ◽  
Soil Samples ◽  
Soil P ◽  
Rye Grass ◽  
Calcium Supply ◽  
The Stability

The effect of a synthetic chelating compound on the dry matter yield and the uptake of soil P, Al, Fe, Mn, Mg and Ca by Italian rye grass was studied in a pot experiment with three mineral soil samples irrigated with water or 0.001 M Na2-EDTA(dinatrium salt of ethylenediaminetetraacetic acid) solution. The Na2-EDTA treatment seemed not to affect the quantity of the dry matter yields, but it affected markedly their chemical composition. Increased contents of P, Al and Fe were found in all the harvests. In two soil samples the P supply was improved by 35—45 %. The accumulation of Al, Fe and Mn induced by Na2-EDTA tended to be the more effective the greater the stability constant for the corresponding metal-EDTA chelate was. Thus, the iron uptake increased most intensively, i.e. by 217—458 %, and that of aluminium by 33—120 %. On the basis of the first two harvests the manganese absorption by the rye grass seemed to decrease probably due to the enormous accumulation of iron. The results also suggested that the addition of Na2-EDTA to the soil was not able essentially to affect the magnesium and calcium supply to the plants.

Effect of Dry Matter Concentration on Dry Anaerobic Digestion of Animal Manure and Straw

2012 ◽  
Vol 253-255 ◽  
pp. 897-902
Author(s):  
Li Jun Shi ◽  
Miao Huang ◽  
Wei Yu Zhang ◽  
Hui Fen Liu
Keyword(s):  
Anaerobic Digestion ◽  
Dry Matter ◽  
Biogas Production ◽  
Engineering Application ◽  
Dairy Manure ◽  
Organic Loading Rate ◽  
Biogas Yield ◽  
Dry Matter Concentration ◽  
Matter Concentration ◽  
Dry Anaerobic Digestion

In this paper anaerobic digestion of dairy manure and straw was conducted to produce biogas. Under the conditions of C/N=25-30 and T=36°C, five kinds of dry matter concentration of 20%, 15%, 10%, 5% and 2.5% were tested to investigate the effect of dry matter concentration on anaerobic digestion. The result showed that first 30 days was the biogas production peak phase and VFA concentrations in the leachate were also high during the same period. When dry matter concentration increased, biogas production appeared larger fluctuation, and alkalinity and NH4+-N concentration in the leachate also increased with higher organic loading rate. Among five kinds of dry matter concentration, 10% was more suitable for anaerobic digestion to produce biogas with total biogas production amount of 4710 mL after 30 days and volumetric biogas yield of 0.313 m3•m-3•d-1. These results could provide instructive meaning to the engineering application of dry anaerobic digestion.

scholarly journals Assessment of Areal Methane Yields from Energy Crops in Ukraine, Best Practices

2020 ◽  
Vol 10 (13) ◽  
pp. 4431
Author(s):  
Ievgeniia Morozova ◽  
Hans Oechsner ◽  
Mykola Roik ◽  
Benedikt Hülsemann ◽  
Andreas Lemmer
Keyword(s):  
Sweet Sorghum ◽  
Dry Matter ◽  
Biogas Production ◽  
N Uptake ◽  
Bioenergy Crops ◽  
High Yield ◽  
Biogas Yield ◽  
Miscanthus Giganteus ◽  
Yield Test ◽  
Biogas Plants

Growing and utilizing bioenergy crops as feeding substrates in biogas plants may aid the development of the biogas sector in Ukraine. Therefore, research was done on potential methane yields from 22 high-yield varieties of 7 different crops grown in Ukraine for their biogas production suitability. Annual crops (maize, soybean, sweet sorghum and sorghum hybrids) and perennials (miscanthus, paulownia and switchgrass) harvested at three different harvesting times (H1, H2 and H3) related to specific stages of phenological development were investigated. The perennial crops studied were from different vegetation years. The samples were analysed in Ukraine on their dry matter- and volatile solids contents, dry matter yield (DMY) and crop nitrogen (N) uptake. The 55 °C -dried samples were delivered to Germany for their analysis with the Hohenheim Biogas Yield Test (HBT) on their specific methane yield (SMY). Based on DMY and SMY, the areal methane yields (AMY) were calculated. The highest SMY and AMY were found for maize, sweet sorghum and miscanthus. The highest average SMY of 0.35 ± 0.03 m3CH4 kgVS−1 was found for maize samples harvested at H2. Miscanthus “Giganteus” from the 8th vegetation year harvested at H1 has shown the highest AMY of 7404.50 ± 199.00 m3CH4 ha−1.

scholarly journals The Performance of Mesotrophic Arrhenatheretum Grassland under Different Cutting Frequency Regimes for Biomass Production in Southwest Germany

Agriculture ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 199 ◽  
Author(s):  
Moritz von Cossel ◽  
Andrea Bauerle ◽  
Meike Boob ◽  
Ulrich Thumm ◽  
Martin Elsaesser ◽  
...  
Keyword(s):  
Biomass Production ◽  
Dry Matter ◽  
Biogas Production ◽  
Cropping System ◽  
Methane Yield ◽  
Ecological Sustainability ◽  
Dry Matter Yield ◽  
Wild Game ◽  
Social Ecological ◽  
Southwest Germany

Biogas production is a key renewable energy pathway for a more sustainable future bioeconomy. However, there is a crucial trade-off between biomass productivity and social-ecological sustainability of available biogas cropping systems. Permanent grassland has been frequently promoted as a promising perennial cropping system for biomass production. Three- and four-cut regimes are usually the highest-yielding and thus preferable for biogas production. A three-year field trial in southwest Germany investigated biomass yield and biochemical composition of mesotrophic Arrhenatheretum grassland under three cutting regimes (two-, three- and four-cut). For the three-cut regime, a preliminary biogas batch test was conducted. The three-cut regime had the highest annual accumulated dry matter yield (11.8–14.8 Mg ha−1), an average specific methane yield of 0.289 m3N kg−1 volatile solids−1 and an accumulated annual methane yield of 3167–3893 m³N ha−1. The four-cut regime performed least favorably due to a lower dry matter yield than the three-cut regime, the highest ash content and the highest nitrogen content. Thus, the three-cut regime promises the best yield performance, whereas the two-cut regime can potentially provide more ecosystem services such as biodiversity conservation and wild-game protection. Consequently, the two-cut regime could help improve the social-ecological sustainability of biogas crop cultivation.

scholarly journals Original Research Article Biogas Yield from Anaerobic Batch Co-Digestion of Rice Husk and Zebu Dung

2013 ◽  
Vol 46 (4) ◽  
pp. 118-122
Author(s):  
Ondrej Cundr ◽  
Dagmar Haladova
Keyword(s):  
Rice Husk ◽  
Biogas Production ◽  
Lignin Content ◽  
Methane Yield ◽  
Original Research ◽  
Waste Biomass ◽  
Energy Potential ◽  
Total Solids ◽  
Biogas Yield ◽  
Single Substrate

Abstract The main objective of this work was to test the suitability of rice husk waste biomass for anaerobic digestion and to examine the energy potential of the co-digestion of rice husk with zebu dung. Rice husk and zebu dung were studied under batch anaerobic conditions as separate wastes as well as mixed in various proportions. All experiments were carried out at 5% of total solids. The methane yield achieved by single substrate digestion of rice husk and zebu dung was 13.9 l and 44.58 l CH4/kg volatile solids (VS), respectively. The co-digestion of 50% total solids (TS) rice straw with 50% total solids zebu dung gave the result of 38.42 l CH4/kg VS. According to these results, the degradation and methane production potential of rice husk were not sufficient and it was found that this residue material is less suitable for single substrate digestion without additional pretreatment than for co-digestion. Even if co-digestion of rice husk with zebu dung improved the digestibility of rice husk and hence increased the biogas production, the methane yield was lower in comparison with the result for zebu dung, due to the high lignin content in rice husk. Nevertheless, the proof of digestibility of rice husk showed the possibility of rational exploitation of this waste material.

scholarly journals Utilization of Oak (Quercus petreae (Matt.) Liebl.) Bark for Anaerobic Digested Biogas Production

2017 ◽  
Vol 13 (2) ◽  
pp. 125-134 ◽  
Author(s):  
Ádám Nándor Makk ◽  
Tamás Rétfalvi ◽  
Tamás Hofmann
Keyword(s):  
Anaerobic Digestion ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Methane Yield ◽  
Tree Bark ◽  
Basic Material ◽  
Pedunculate Oak ◽  
Key Factors ◽  
Biogas Yield ◽  
Lignocellulosic Residue

Abstract Fossil fuel depletion has led to an increasing number of research studies and applications focusing on renewable energy, such as different types of biomass. Lignocellulosic biomass represents an abundant source of biomass suitable for energy production in various forms. The present research investigates the application possibility of pedunculate oak bark (Quercus petrea (Matt.) Liebl.) for the production of biogas via anaerobic digestion. This research has significant novelty, as only a few examples on the utilization of tree bark wastes for the production of biogas can be found in the scientific literature. One of the key factors of increasing biogas yield is the efficient hydrolysis of the basic material, which is achieved by different pretreatment methods. In this study, oak bark was pretreated by microwave energy, by extraction, and by the combination of these two methods. The semi-continuous thermophylic anaerobic digestion of untreated oak bark resulted a 76.3 ml/g volatile solid specific methane yield over a 50-day period, which was not significantly lower than methane yield gained from pretreated basic material. Results indicated that oak bark is suitable for the production of biogas even without the application of the investigated pretreatment techniques. As extraction of oak bark does not impair biogas production, the complex biorefinery utilization of oak bark in the form of extraction bark polyphenols and the subsequent anaerobic fermentation of lignocellulosic residue can be accomplished in the future.

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