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Use of biogas biscuit meal EKPO-EB for agricultural biogas plant for substitution of energy crops utilization with organic waste

100%
Chamrádová K., Rusín J.
Polish Journal of Chemical Technology
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2015
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vol. 17
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issue 3
40-46
EN
A laboratory experiment of two-stage mesophilic, low-dry mass, anaerobic digestion was carried out, focused on verifying the benefit of processing the biscuit meal EKPO-EB instead of triticale silage Agostino (GPS) and corn silage LG3266 in a regular batch for the agricultural biogas station in Pustějov. While anaerobic digestion of ensilages is largely difficult due to the content of lignocellulose, biscuit meal provides a high yield of biogas or methane, respectively, thanks to its high content of simple saccharides and lipids. When the original GPS (or the replacement EKPO-EB, respectively) represented 0.81% of weight of the daily input mixture dose for the first stage, the rise in volumetric methane production was 20% which is significant. The biscuit meal EKPO-EB decomposes almost completely in the first stage. Later, when the EKPO-EB represented 1.63% of weight of the daily input mixture dose for the first stage, the rise in volumetric methane production was 54% in the first stage and 16% in the second stage.
2
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Modelling of a batch anaerobic digestion

100%
Szewczyk K., Bukowski J.
Polish Journal of Chemical Technology
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2008
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vol. 10
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issue 1
45-48
EN
The Anaerobic Digestion Model no 1 (ADM1) has been implemented to simulate batch fermentation. The pH changes and inhibition of the fermentation have been studied. The model has been used to investigate the effects of substrate composition and concentration as well as the composition of the microorganism population on the course of fermentation. The overload of a reactor has been discussed.
3
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Bio-methanization of organic fraction from municipal solid waste: temperature effects

88%
Fernández-Rodríguez J., Pérez M., Romero L. I.
Polish Journal of Chemical Technology
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2013
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vol. 15
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issue 2
99-106
EN
The main objective of this study was to analyse the development of dry anaerobic digestion process of OFMSW in batch reactors under two temperature ranges, thermophilic (55°C) and mesophilic (35°C). The experimental results lead to the conclusion that the thermophilic range has a greater rate of hydrolysis and is therefore more effective to degrade wastes, shortening the overall operating time. For example, the hydrolytic step in the thermophilic (T) process lasted an average of 8 days versus 14 days in the mesophilic (M) range. The methanogenic phase lasted for 18 and 29 days in the T and M processes, respectively. The mesophilic range showed higher removal of the organic effluent but with greater uptime requirements. Moreover, the thermophilic range showed greater productivities than the mesophilic range, and the productivities were approximately doubled in terms of the produced biogas from a given amount of consumed organic matter.
4
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Sustainable management of wastewater: Theoretical design of combined upflow anaerobic reactors and artificial wetlands systems

75%
Guardia-Puebla Y., Llanes-Cedeño E., Rodríguez-Pérez S., Arias-Cedeño Q., Sánchez-Girón V., Morscheck G., Eichler-Löbermann B., Guardia-Puebla Y., Llanes-Cedeño E., Rodríguez-Pérez S., Arias-Cedeño Q., Sánchez-Girón V., Morscheck G., Eichler-Löbermann B.
Journal of Water and Land Development
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2020
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issue 47
5
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Facilities and problems of processing organic wastes by family-type biogas plants in Ukraine

75%
Voytovych I., Malovanyy M., Zhuk V., Mukha O., Voytovych I., Malovanyy M., Zhuk V., Mukha O.
Journal of Water and Land Development
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2020
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issue 45
6
Content available remote

Influence of Microwave Pre-Treatment on the Digestion and Higienisation of Waste Activated Sludge/Wpływ Dezintegracji Mikrofalowej Na Proces Fermentacji Oraz Higienizacji Nadmiernych Osadów Ściekowych

63%
Bohdziewicz J., Kuglarz M., Grűbel K.
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issue 3
447-464
EN
The article presents the results of determining the most appropriate conditions of microwave sludge pre-treatment (500-1200 W), prior to its anaerobic digestion in a continuous mode. The assessment of the pre-treatment conditions (microwave power, sludge temperature after pre-treatment) was based on: the release of organic (COD, protein) and inorganic (NH4+, PO43-) substances into liquid, the quantity of methane produced, sludge higienisation and the susceptibility of the pre-treated sludge to dewatering. The power of the microwaves applied did not play significant role on the pre-treatment effectiveness. Taking into account the fact that sludge pre-treatment by microwave irradiation requires the delivery of energy, the pre-treatment by microwaves of higher power (1200 W) and resulting in sludge temperature of 70°C was recommended for further experiments. Sludge pre-treatment by means of microwave irradiation as a pre-treatment step influenced the effectiveness of the subsequent anaerobic digestion, conducted in continuous conditions, in a positive way. The largest amount of biogas was obtained for HRT in the range of 15-20 days. As compared to the sludge which did not undergo pre-treatment, daily biogas production and biogas yield increased by 18-41% and 13-35% respectively. The combination of microwave pre-treatment and mesophilic anaerobic digestion ensured the elimination of pathogens (Salmonella spp., Escherichia coli).
PL
Celem badań przedstawionych w artykule było wyznaczenie najkorzystniejszych warunków prowadzenia procesu dezintegracji mikrofalowej (500-1200 W) osadów ściekowych przed ich przeróbką w warunkach beztlenowych (warunki ciągłe). Oceny efektywności procesu mikrofalowej dezintegracji osadów (moc mikrofal, temperatura) dokonano, kierując się stężeniem związków organicznych (ChZT, białka rozpuszczalne) uwolnionych do cieczy nadosadowych, wskaźnikami jakościowymi produkowanego biogazu, stopniem higienizacji oraz podatnością osadów przefermentowanych na odwadnianie. Na podstawie przeprowadzonych badań ustalono, iż moc zastosowanego promieniowania mikrofalowego nie wpłynęła w znaczący sposób na efektywność procesu dezintegracji. Biorąc pod uwagę efektywność oraz zapotrzebowanie energetyczne, ustalono, iż najkorzystniejsze warunki prowadzenia procesu dezintegracji mikrofalowej zapewnia zastosowanie mikrofal o mocy 1200 W oraz temperatury osadów wynoszącej 70°C. Dezintegracja mikrofalowa osadów ściekowych za pomocą promieniowania mikrofalowego wpłynęła korzystnie na efektywność procesu fermentacji metanowej prowadzonego w warunkach ciągłych. Najkorzystniejsze wskaźniki produkowanego biogazu uzyskano dla HRT wynoszącego 15-20 dni. W tych warunkach dobowa i jednostkowa produkcja biogazu wzrosły odpowiednio o 18-41% oraz 13-35%. Zastosowanie dezintegracji mikrofalowej przed procesem mezofilowej fermentacji zapewniło całkowitą eliminację mikroorganizmów patogennych (Salmonella spp., Escherichia coli).
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