Search results

1

Evaluation of Biogas Collection from Reed Canary Grass, Depending on Nitrogen Fertilisation Levels

100%

Kacprzak A., Matyka M., Krzystek L., Ledakowicz S.

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vol. 33

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issue 4

697-701

EN

The world in 21st century is facing the problem of growing energy consumption while the supply of fossil fuels is being reduced. This resulted in the development of research into the use of renewable energy sources and development of new technologies for energy production. In Polish conditions the development of agricultural biogas plants finds its legitimacy in the document developed by the Ministry titled "Trends in agricultural biogas plants in Poland in 2010-2020”. The purpose of this study was to investigate the influence of the weather conditions and the degree of nitrogen fertilisation on yield of reed canary grass (Phalaris Arundinacea L.) and to determine their susceptibility to anaerobic digestion, and usefulness of the production of biogas. Carried out experiments showed that increasing nitrogen fertilisation (from 40 to 120 kg N/ha) linearly increased canary grass green biomass yield from 32 to 46.3 t/ha. However, the highest biogas yield 126 m3/ha was obtained when 80 kg N/ha was applied.

2

Study of the Process of Hydraulic Mixing in Anaerobic Digester of Biogas Plant

100%

Karaeva J. V., Khalitova G. R., Kovalev D. A., Trakhunova I. A.

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issue 1

101-112

EN

Two systems of hydraulic mixing in a vertical cylindrical anaerobic digester: standard and modernised are discussed in the paper. Numerical investigations that were carried out are focused on a study of hydrodynamic processes in an aerobic digester using two various systems of hydraulic mixing as well as on analysis of the efficiency of methane fermentation process accomplished under different geometric parameters of an anaerobic digester and systems of hydraulic mixing.

3

Evaluation of Biogas Collection from Reed Canary Grass, Depending on Nitrogen Fertilisation Levels

100%

Ledakowicz S., Kacprzak A., Matyka M., Krzystek L.

Chemical and Process Engineering

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2012

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issue 4

4

Hydraulic Mixing Modelling in Reactor for Biogas Production

100%

Chmielewski A. G., Berbeć A., Zalewski M., Dobrowolski A.

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vol. 33

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issue 4

621-628

EN

Two-stage biogas production plant consists of two reactors: a hydrolyser and a fermentor. The bioreactor construction has to meet three requirements: low cost and simplicity of construction and good biomass mixing conditions with an application of appropriate method. This paper reports CFD modelling of hydraulic mixing in the tank to be applied in a two-stage industrial installation.

5

Study of the Process of Hydraulic Mixing in Anaerobic Digester of Biogas Plant

88%

Karaeva J. V., Khalitova G. R., Kovalev D. A., Trakhunova I. A.

Chemical and Process Engineering

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2015

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issue 1

6

Technical Economic Analysis of a 0,8MW Agricultural Biogas Plant

88%

Tucki K., Kominek M.

Teka Commission of Motorization and Power Industry in Agriculture

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2016

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vol. 16

|

issue 1

7

Energetic efficiency of the combined ORC and gas turbine installation powered by the anaerobic sewage sludge stabilization system

88%

Matysko R.

Archives of Thermodynamics

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2018

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vol. 39

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issue 4

8

Hydraulic Mixing Modelling in Reactor for Biogas Production

88%

Berbeć A., Chmielewski A. G., Zalewski M., Dobrowolski A.

Chemical and Process Engineering

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2012

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issue 4

9

Membrane installation for biogas enrichment – Field tests and system simulation

75%

Chmielewski A. G., Urbaniak A., Palige J., Roubinek O., Wawryniuk K., Dobrowolski A., Chmielewski A. G., Urbaniak A., Palige J., Roubinek O., Wawryniuk K., Dobrowolski A.

Chemical and Process Engineering

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2019

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vol. 40

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issue 2

10

Technical and Logistics Analysis of the Extension of the Energy Supply System with the Cogeneration Unit Supplied with Biogas from the Water Treatment Plant

75%

Tucki K., Sikora M.

Teka Commission of Motorization and Power Industry in Agriculture

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2016

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vol. 16

|

issue 1

11

Mesophilic-thermophilic fermentation process of waste activated sludge after hybrid disintegration

63%

Grűbel K., Machnicka A., Nowicka E., Wacławek S.

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issue 1

125-136

EN

The previously received results of individual processes of hydrodynamic and alkaline disintegration were decisive significant for the conducted research task. The combination of hydrodynamic cavitation (30 minutes duration of the process) and alkaline (pH ≈ 9) to the destruction of activated sludge caused a significant release of organic matter about 1383 mg/dm3 in comparing to individual processes. Such increase in the SCOD value resulted in a significant growth the efficiency of biogas yield in a two-stage mesophilic-thermophilic processes. The increase in yield was from 26 to 38% depending on the volume of disintegrated sludge. The effect of the two-stage fermentation resulted activated sludge hygienisation. The microbiological analysis of the influence of the fermentation with the different volume of hybrid disintegrated sludge was based on microbiological indicators: Salmonella spp. and coliphages. The obtained results prove the effectiveness of the two-stage digestion process compared to single mesophilic fermentation which not always completely eliminates the above indicators.

PL

Decydujące znaczenie dla przeprowadzonego zadania badawczego miały wyniki badań dotyczące jednostkowych procesów dezintegracji hydrodynamicznej i alkalizacji. Połączenie kawitacji hydrodynamicznej (30 minut trwania procesu) i alkalizacji (przy pH ≈ 9) w celu destrukcji osadu czynnego powodowało znaczące uwolnienie materii organicznej o 1383 mg/dm3 w porównaniu do jednostkowych procesów. Tak duży wzrost wartości ChZT przełożył się na istotny wzrost wydajności produkcji biogazu w procesie dwustopniowej fermentacji mezofilowo-termofilowej. Wzrost wydatku wyniósł od 26 do 38% w zależności od udziału osadu dezintegrowanego. Działanie dwustopniowej fermentacji skutkowało higienizacją osadu czynnego. Analiza mikrobiologiczna wpływu procesu fermentacji ze zróżnicowanym udziałem osadu dezintegrowanego hybrydowo została dokonana zgodnie ze wskaźnikami mikrobiologicznymi: Salmonella spp. oraz colifagi. Otrzymane wyniki świadczą o skuteczności prowadzenia procesu dwustopniowego w porównaniu z fermentacją jednostopniową mezofilową, po której nie zawsze następuje całkowita eliminacja ww. wskaźników.

12

Analysis of studies of lake sapropel properties

63%

Didukh V., Tomyuk V., Onyukh Y., Lalak-Kańczugowska J.

Teka Commission of Motorization and Power Industry in Agriculture

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2016

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vol. 16

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issue 3

13

Control of Landfill Gases Emission with Particular Emphasis on Btex

63%

Staszewska E., Pawłowska M.

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vol. 19

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issue 2

239-248

EN

Landfilling is the most popular way for waste disposal and has been widely applied globally. A large quantity of volatile organic compounds (VOCs) is released from landfills. Among them, BTEX (benzene, toluene ethylbenzene and xylene) is a major group of pollutants, which have now become a cause for concern worldwide because of their toxic properties. For this reason, strict regulations have come into force which induce researchers to find methods to reduce their emissions. This article contains descriptions of several aerobic metabolic pathways for the degradation of BTEX, which are provided by two enzymatic systems (dioxygenases and monooxygenases). Special attention was paid to biofiltration - a method for improving the efficiency of treatment of BTEX released from landfills.

PL

Składowiska odpadów są najtańszą i najprostszą metodą ich zagospodarowania. Ze względu na uwalnianie z nich znacznych ilości lotnych związków organicznych (VOC) składowiska stanowią zagrożenie dla czystości powietrza, wód gruntowych oraz gleb. W grupie VOC uwalnianych ze składowisk odpadów najbardziej powszechne i jednocześnie bardzo toksyczne są BTEX (benzen, toluen, etylobenzen, ksyleny). Z tego też względu ważne jest poszukiwanie efektywnych metod eliminacji tych związków ze składowisk odpadów. W artykule przedstawiono obecny stan wiedzy odnoszący się do degradacji BTEX przez mikroorganizmy oraz opis metod stosowanych do usuwania BTEX ze składowisk odpadów ze szczególnym uwzględnieniem procesu biofiltracji.

14

Time changeability model of the bog ore sorption ability

51%

Gaj K., Cybulska-Szulc H.

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issue 1

113-123

EN

Basing on long-standing cyclic measurements of sludge-originated biogas composition and considering statistical analysis of their results, a regression model describing time variation of biogas desulfurization using bog iron ore has been developed. The model was verified by theoretical calculations and results from laboratory examinations of the sorbent. It was also used to estimate the depletion time and sorption capacity of the bed and to determine the demand index for bog ore.

PL

Na bazie wieloletnich (2003-2009), cyklicznych pomiarów składu biogazu powstającego z osadów ściekowych, na podstawie analizy statystycznej ich wyników opracowano model regresyjny opisujący czasowy charakter zmienności skuteczności odsiarczania biogazu za pomocą rudy darniowej. Model został zweryfikowany z wykorzystaniem obliczeń teoretycznych i wyników badań laboratoryjnych sorbentu. Za jego pomocą oszacowano czas wyczerpania i pojemność sorpcyjną złoża oraz wyznaczono wskaźnik zapotrzebowania na rudę darniową.

Refine search results

Evaluation of Biogas Collection from Reed Canary Grass, Depending on Nitrogen Fertilisation Levels

Study of the Process of Hydraulic Mixing in Anaerobic Digester of Biogas Plant

Evaluation of Biogas Collection from Reed Canary Grass, Depending on Nitrogen Fertilisation Levels

Hydraulic Mixing Modelling in Reactor for Biogas Production

Study of the Process of Hydraulic Mixing in Anaerobic Digester of Biogas Plant

Technical Economic Analysis of a 0,8MW Agricultural Biogas Plant

Energetic efficiency of the combined ORC and gas turbine installation powered by the anaerobic sewage sludge stabilization system

Hydraulic Mixing Modelling in Reactor for Biogas Production

Membrane installation for biogas enrichment – Field tests and system simulation

Technical and Logistics Analysis of the Extension of the Energy Supply System with the Cogeneration Unit Supplied with Biogas from the Water Treatment Plant

Mesophilic-thermophilic fermentation process of waste activated sludge after hybrid disintegration

Analysis of studies of lake sapropel properties

Control of Landfill Gases Emission with Particular Emphasis on Btex

Time changeability model of the bog ore sorption ability