Biogas potential from demaged bread

Dubrovskis, Vilis; Plume, Imants

doi:10.22616/erdev2017.16.n087

Cited by 9 publications

(7 citation statements)

References 4 publications

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“…Our previous study with damaged bread has shown that the specific biogas volumes (methane percentage in biogas) obtained after 30 days of the anaerobic digestion (AD) process were the following: 'French bread' 0.723 l•g -1 DOM (50.6 %); 'Rye flour bread' 0.634 l•g -1 DOM (49.9 %); 'Wheat flour (coarse) bread' 0.731 l•g -1 DOM (50.9 %); 'Toaster bread' 0.694 l•g -1 DOM (44.9 %), and 'White bread' (with egg and milk additives) 0.943 l•g -1 DOM (45.4 %) [5]. The results show that damaged bread can be used for biogas production successfully.…”

Section: Introductionmentioning

confidence: 99%

Methane production from bread Kursu and potatoes Vineta waste and effect of catalyst metaferm

Dubrovskis

Plume

Straume

2018

Engineering for Rural Development

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There are significant quantities of different food wastes, which cannot be consumed for food in Latvia. Foods popular in Latvia are rye bread Kursu and potatoes Vineta. The significant part of this food was diverted to waste due to non-standard, surplus production, bad storage conditions, shelf life limitations and wastes accruing during food consumption by consumers. Food wastes, when disposed in landfills, will degrade easy in aerobic conditions releasing harmful gases, including gaseous nitrogen compounds and carbon dioxide. Also, food wastes disposal in landfills are limited now and expected to be avoided in future according to the respective EU Directive on disposal of easy degradable wastes. Damaged bread and potatoes peels may be utilised in the biogas production process. There is an interest to investigate the effect of usage of additives, e.g. catalyst Metaferm, to enhance the methane production during the anaerobic fermentation process. In previous studies, the addition of catalyst Metaferm caused the improvement of methane extraction from substrates with difficultly biodegradable corn silage and dried grains. Therefore, this study continues to examine the effect of the additive Metaferm on more easily fermentable biomass. To find the methane volume obtainable from bread Kursu and potato Vineta wastes, a study was conducted in 16 bioreactors at the temperature of 38 ºC. The specific methane volume 0.459 l•g-1 DOM or 0.515 l•g-1 DOM were obtained from rye bread Kursu or potatoes Vineta respectively, after 30 days anaerobic digestion (AD) process. The addition of Metaferm increases the methane yield by 5.4 % or 2.3 % from rye bread or potato wastes, respectively. Investigation results show that both food wastes can be utilised in biogas plants for energy production successfully.

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Section: Introductionmentioning

confidence: 99%

Methane production from bread Kursu and potatoes Vineta waste and effect of catalyst metaferm

Dubrovskis

Plume

Straume

2018

Engineering for Rural Development

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“…The temperature for digestion of these wastes was Biogas, methane, bakery waste, Modern Civilization is based on high energy consumption. On an average, each citizen living on the earth consumes 2 t of carbon in a year for energy needs [1].Looking on to these problems of energy crisis solid waste must be processed for energy Solid waste generated during bakery materials production if treated by anaerobic digestion provides good results. Anaerobic digestion is a degradation of organic substances by microorganisms in the absence of oxygen.…”

Section: Introductionmentioning

confidence: 99%

A Review: Biogas Production from Bakery Waste

Kodag¹,

Kulkarni²

2018

IJTSRD

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The Anaerobic Digestion process is one of the non thermal technologies of energy recovery from waste. Bakery waste is seen to be a very vital source of nutrient been unused. Bakery waste contains sugars which are easy to degrade along with other nutrients. There is an immense potential of extracting energy from bakery waste in form of biogas. The present paper states that an option of feedstock is available in form of bakery wastes like different varieties of bread, biscuits, rolls, donuts, pizza dough waste etc. underwent experimentations. Bread and biscuit waste for a retention time of 22 to 42 days produced methane 45% and above. The pH was found to be in a range of 5.3 to 7.4 for overall bakery waste. The temperature for digestion of these wastes was between 20 ᵒC to 40ᵒC.

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“…2020. 16 (4) for biogas and high-quality fertilizers. however, the biogas release during the fermentation of manure is relatively low due to a sufficiently large amount of crude fiber.…”

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confidence: 99%

“…Analysis of recent research and publications on the grain waste disposal show that their anaerobic processing is the most effective for biogas production. According to the results of the study described in research [3], the re lease of biogas at a fermentation temperature of 38°с from substrates with the addition of rye bread is 0.459 l/g dry organic matter (DoM), in research [4], various types of grain release -from 0.634 l/g DoM (for rye bread) to 0.943 l/g DoM (for wheat bread with egg and milk additives). As it is stated in research [5], the common fermentation of biowaste with the waste of wheat and rye bread with an organic loading ra te of 14 kg/m 3 per day, was stable to their organic loading rate kg/m 3 per day and enabled producing 3 times mo re biogas.…”

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“…Nauka innov. 2020 16 (4). The biogas release during the process of cow manure fer mentation with an addition of flour at a temperature of 35 °с Accumulated biogas release during the fermentation of the cow manure and flour mixture at a temperature of 35 °с experimental study of the biogas release during the fermentation of cow manure with the addition of flour was carried out at a fermentation temperature of 35 °с (in mesophilic mode).…”

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Increasing the Bio Gas Release During the Cattle Manure Fermentation by Means the Rational Addition of Substandard Flour as a Cosubstrate

Поліщук¹,

Romaniuk²,

Tarasenko³

et al. 2020

Nauka innov.

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The processing of livestock waste and agricultural production enables not only improving environmental safety, but also obtaining energy resources. Problem Statement. Cow manure is used to produce biogas, but its yield is relatively low. One way to increase biogas yield is the joint fermentation of cow manure with substandard flour, which cannot be used as human food and as feed for farm animals. However, the flour content in the substrate, at which the biogas yield is maximum and there is no inhibition of the methane fermentation process, is not a solved issue. Purpose. Increase biogas yield by adding substandard flour to a cow manure-based substrate. Materials and Methods. Research of biogas yield during methane fermentation of substrate based on cow manure with the addition of substandard flour was carried out on a biogas plant consisting of a methane tank with a working volume of 30 l and wet gasholder at periodic substrate loading and fermentation temperature 35 °C. The portion of the substrate included 1.7 kg of manure, 2.5 kg of water and 50, 100, 250 or 500 g of flour. The composition of flour in the substrate was 1.2%, 2.3%, 5.6% and 10.6%. The dichotomy method was used to determine the optimal flour content in the substrate, provided the maximum biogas yield. Results. The maximum biomethane release is 14.3 l/kg dry organic matter (DOM), at 1.

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Biogas potential from demaged bread

Cited by 9 publications

References 4 publications

Methane production from bread Kursu and potatoes Vineta waste and effect of catalyst metaferm

Methane production from bread Kursu and potatoes Vineta waste and effect of catalyst metaferm

A Review: Biogas Production from Bakery Waste

Increasing the Bio Gas Release During the Cattle Manure Fermentation by Means the Rational Addition of Substandard Flour as a Cosubstrate

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