Temat: Methane - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Methane emission from livestock in the Podlaskie Voivodeship
Autorzy:: Czubaszek, R.
Wysocka-Czubaszek, A.
Powiązania:: https://bibliotekanauki.pl/articles/123472.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: methane emission
livestock
Podlaskie Voivodeship
Opis:: The purpose of the analysis, the results of which are presented in this paper was to determine the amount of methane emitted from livestock farming into the atmosphere from the area of the Podlaskie Voivodeship in the years 1999–2012. The analysis was conducted according to guidelines developed by the IPCC and concerned two sources of methane: enteric fermentation and manure management. According to KOBIZE data, in Poland, in both cases systematic decrease in CH4 emission into the atmosphere is observed. In contrast to this trend, in Podlaskie Voivodeship methane emission, related to enteric fermentation in the period of 1999–2012 increased by 32%, while the amount associated with manure by about 15%. The main reason for these differences is a steady increase of the number of cows, which are the main source of methane.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 46-50
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of plant composition on methane emision from Moszne peatland
Autorzy:: Goraj, W
Kuźniar, A.
Urban, D.
Pietrzykowska, K
Stępniewska, Z.
Powiązania:: https://bibliotekanauki.pl/articles/123646.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: methane
methanotrophic bacteria
peatland vegetation
Opis:: Methane is the second most important man-made greenhouse gas after carbon dioxide. For more than the last 20 years the increase of the rate of CH₄ emission has been varying dramatically each year. This trend is common worldwide, though in different parts of the world unevenly intense, conditioned by the amount of emissions from natural and anthropogenic sources. Peatland ecosystems are one of the natural methane emitters, responsible for about 24% of the total CH₄ emissions. Methane emission from wetlands is the balance between the processes of methanogenesis and methanotrophy with an active role of wetlands plants composition. Participation of vegetation in the reduction the emissions by 30-35% was confirmed. Association of methanotrophic bacteria with plants has been already recognized by Raghoebarsing and colleagues, who showed that methanotrophic bacteria, as endosymbionts and epibionts, live both inside and outside the cells of Sphagnum sp. The main aim of this study was to estimate methane emissions from Moszne peatland, dominated by: Sphagnum sp., Eriophorum vaginatum, Carex nigra and Vaccinium uliginosum.
Źródło:: Journal of Ecological Engineering; 2013, 14, 1; 53-57
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Denitrification-Dependent Anaerobic Oxidation of Methane in Freshwater Sediments of Reservoirs in SE Poland
Autorzy:: Szal, Dorota
Gruca-Rokosz, Renata
Powiązania:: https://bibliotekanauki.pl/articles/124242.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: denitrification-dependent oxidation of methane
anaerobic oxidation of methane
electron acceptor
sediment incubation experiment
Opis:: The results presented here concern the anaerobic oxidation of methane (CH₄) coupled with denitrification (i.e. a process abbreviated to DAMO) in the freshwater sediments of dam reservoirs located in Rzeszów, Maziarnia and Nielisz, SE Poland. The DAMO rate was determined experimentally by adding a ¹³CH₄ isotope marker and NO₃as an electron acceptor. The sediments were collected once, in autumn (September), with incubation of the 0–5, 5–10 and 10–15 cm layers then carried out at 10°C, as the temperature corresponding to the in situ conditions at the given time of the year. The DAMO rates were set against the results for the anaerobic oxidation of methane (AOM), which were obtained by incubation of reservoir sediments with the ¹³CH₄ isotope marker alone. The DAMO rates noted were of 0.03–0.69 nmol∙g^-1∙h^-1 for Rzeszów Reservoir; 0.04–0.47 nmol∙g^-1∙h^-1 for Maziarnia Reservoir and 0.19–1.04 nmol∙g^-1∙h^-1 for Nielisz Reservoir. Overall, it was typical for the DAMO rates to be about twice as high as the rates of AOM with no electron acceptor added. The addition of NO₃did not accelerate the methane oxidation significantly in any of the sediment layers from Maziarnia Reservoir, while the effects in Rzeszów Reservoir sediments were confined to the 10–15 cm layer. While the DAMO rates were progressively higher in the deeper layers of sediment from Maziarnia Reservoir, the trend was the reverse (downward) with depth at the Rzeszów and Nielisz sites. The results indicate that the process abbreviated as DAMO takes place in dam reservoirs and is related, not only to the presence of NO₃-, but also to the sediment parameters.
Źródło:: Journal of Ecological Engineering; 2019, 20, 9; 218-227
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Methane and Nitrous Oxide Emissions from Agriculture on a Regional Scale
Autorzy:: Wysocka-Czubaszek, A.
Czubaszek, R.
Roj-Rojewski, S.
Banaszuk, P.
Powiązania:: https://bibliotekanauki.pl/articles/124407.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: methane emissions
nitrous oxide emissions
agriculture
Opis:: Nowadays, agriculture has to meet the growing food demand together with high requirements of environmental protection, especially regarding the climate change. The greenhouse gas emissions differ not only on a global, but also on a regional scale, and mitigation strategies are effective when they are adapted properly. Therefore, the aim of this paper is to present the results of methane (CH₄) and nitrous oxide (N₂O) emissions inventory on a regional level in Poland in years 1999-2015. The CH₄ and N₂O emissions were calculated according to the methodology used by the National Centre for Emissions Management (NCEM) for national inventory for United Nations Framework Convention on Climate Change and Kyoto Protocol. The data were taken from Central Statistical Office of Poland. The CH₄ emissions in all studied years varied strongly between voivodeships and ranged from 5.6-7.5 Gg y^-1 in the Lubuskie Voivodeship to 84.8-104.3 Gg y^-1 in the Mazowieckie Voivodeship. While in most voivodeships the CH₄ emissions dropped down, in Podlaskie, Warmińsko-Mazurskie, and Wielkopolskie voivodeships, the emissions of this gas increased significantly as a consequence of the development of dairy and meat production. In 1999, the highest N₂O fluxes were calculated for the Wielkopolskie (5.7 Gg y-1), Mazowieckie (4.8 Gg y^-1) Kujawsko-Pomorskie (3.5 Gg y^-1) and Lubelskie (3.3 Gg y^-1) voivodeships, while in 2015, the highest nitrous oxide emissions were calculated for the Wielkopolskie (7.3 Gg y^-1), Mazowieckie (5.5 Gg y^-1), Kujawsko-Pomorskie (4.1 Gg y^-1) and Podlaskie (4.1 Gg y^-1) voivodeships. In the studied period, the contribution of N₂O emissions from crop production increased in almost all voivodeships except the Podlaskie, Lubuskie and Warmińsko-Mazurskie regions. The growth in emissions from mineral fertilization and crop residue incorporation, together with the increase of emission from the animal sector in some regions of Poland, resulted in the higher national emission of nitrous oxide in the period of 1999 to 2015. Although there is a range of GHG reduction possibilities, the mitigation should be adapted with caution, on the basis of precisely calculated GHG emissions. The best management practices, if followed carefully, may reduce the environmental burden of the agricultural production and enhance its profitability.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 206-217
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Application of an Innovative Ultrasound Disintegrator for Sewage Sludge Conditioning Before Methane Fermentation
Autorzy:: Zieliński, M.
Dębowski, M.
Krzemieniewski, M.
Rusanowska, P.
Zielińska, M.
Cydzik-Kwiatkowska, A.
Głowacka-Gil, A.
Powiązania:: https://bibliotekanauki.pl/articles/124268.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sewage sludge
ultrasound disintegrator
methane fermentation
biogas
Opis:: Ultrasonic disintegration is one of the most interesting technologies among all known and described technologies for sewage sludge pre-treatment before the process of methane fermentation. This study was aimed at determining the effects of an innovative ultrasonic string disintegrator used for sewage sludge pre-treatment on the effectiveness of methane fermentation process. In this experiment, we used a device for disintegration of organic substrates, including sewage sludge, with the use ultrasonic waves. Its technical solution is protected by a patent no. P. 391477 – Device for destruction of tissue and cell structures of organic substrate. The volume of biogas produced ranged from 0.194±0.089 dm³/g o.d.m. at loading of 5.0 g o.d.m./dm³ and power of 50 W to 0.315±0.087 dm³/g o.d.m. at loading of 4.0 g o.d.m./dm³ and ultrasounds power of 125 W. The study demonstrated a positive effect of sewage sludge sonication on the percentage content of methane in biogas. Sewage sludge exposure to 125 W ultrasounds increased methane content in biogas to 68.3±2.5 % at tank loading of 3.0 g o.d.m./dm³.
Źródło:: Journal of Ecological Engineering; 2018, 19, 5; 240-247
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Emission Measurements of Geogenic Greenhouse Gases in the Area of “Pusty Las” Abandoned Oilfield (Polish Outer Carpathians)
Autorzy:: Guzy, P.
Pietrzycki, D.
Świerczewska, A.
Sechman, H.
Twaróg, A.
Góra, A.
Powiązania:: https://bibliotekanauki.pl/articles/124987.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: greenhouse gas
methane
carbon dioxide
Outer Carpathians
Opis:: The Carpathians may play a significant role as a supplier of greenhouse gases to the atmosphere. Unfortunately, most of the discovered oil and gas deposits are recently only historical objects. An example is the Sękowa-Ropica Górna-Siary oil deposit located in the marginal part of the Magura Nappe where oil had been extracted in dug wells until the mid XX century. One of such extraction sites is the “Pusty Las” oilfield. In that area, 10 methane and carbon dioxide emission measurement sites were located, among which 4 in dried dug wells and 6 in dig wells still filled with oil and/or water. Dynamics of methane and carbon dioxide concentration changes were measured with the modified static chambers method. Gas samples were collected immediately after the installation of the chamber and again, after 5 and 10 minutes. In the case of reclaimed or dry dug wells, static chamber was installed directly at the ground surface. In wells still filled with oil and/or water the chamber was equipped with an “apron” mounted on special sticks. The dynamics of concentrations changes varied from -0.871 to 119.924 ppm∙min^-1 for methane and from -0.005 to 0.053% obj∙min^-1 for carbon dioxide. Average methane emission was 1.9 g∙m^-2∙d^{-¹ and that of carbon dioxide was 26.95 g∙^-2∙d^{-¹. The measurements revealed that an abandoned oil field supplies significant amounts of greenhouse gases to the atmosphere although the emission of methane is lower than that measured e.g. in mud volcanoes located in various parts of the world.}}
Źródło:: Journal of Ecological Engineering; 2017, 18, 4; 100-109
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Giant Miscanthus as a Substrate for Biogas Production
Autorzy:: Kazimierowicz, J.
Dzienis, L.
Powiązania:: https://bibliotekanauki.pl/articles/125065.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: energy crops
biogas
methane fermentation
giant Miscanthus
Opis:: One unconventional source of energy, which may be applied in numerous production and municipal processes, is energy accumulated in plants. As a result of photosyn-thesis, solar energy is transformed into chemical energy accumulated in a form of carbohydrates in the plant biomass, which becomes the material that is more and more sought by power distribution companies and individual users. Currently, a lot of re-search on obtaining biogas from energy crops is conducted. Corn silage is used most often, however, there is a demand for alternative plants. The experiment described in this article was conducted with the use of giant Miscanthus (Miscanthus Giganteus).
Źródło:: Journal of Ecological Engineering; 2015, 16, 4; 139-142
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Mechanical Pretreatment of Lignocellulosic Biomass for Methane Fermentation in Innovative Reactor with Cage Mixing System
Autorzy:: Rusanowska, P.
Zieliński, M.
Dudek, M.
Dębowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/125456.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pretreatment
lignocellulose
methane production
net energy efficiency
Opis:: Disintegration of lignocellulosic biomass for energy purposes has been extensively studied. The study aimed to investigate the influence of crushed and uncrushed lignocellulosic biomass on the biogas production in an innovative reactor. The substrate fed to the reactor was Sida hermaphrodita silage mixed with cow manure. The bioreactor had an innovative design of the mixing cage system. The mixing system of the bioreactor consisted of two cylindrical stirrers in the form of a cage. The cages simultaneously rotate around the axis of the bioreactor at against their own axes. The bioreactor is currently presented under the Record Biomap program (Horizon 2020). The bioreactor was operated at organic compounds loading of 2 kg/(m³∙d) and 3 kg/(m³∙d) and hydraulic retention time was 50 d and 33 d, respectively. The biogas production under the organic compounds loading of 2 kg VS/(m³∙d) was 680 L/kg VS from crushed lignocellulosic biomass and 570 L/kg VS from uncrushed lignocellulosic biomass. The biogas production under the organic compounds loading 3 kg VS/(m³∙d) was 730 L/kg VS from crushed lignocellulosic biomass and 630 L/kg VS from uncrushed lignocellulosic biomass. The crushing of substrate did not influence the methane content in the biogas. In all experiments, the biogas comprised about 54% of methane. The net energy efficiency was calculated as well.
Źródło:: Journal of Ecological Engineering; 2018, 19, 5; 219-224
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Diffusive Fluxes of CH4 and CO2 at the Sediment-Overlying Water Interface in Reservoir Ecosystems
Autorzy:: Gruca-Rokosz, R.
Powiązania:: https://bibliotekanauki.pl/articles/123672.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: methane
carbon dioxide
greenhouse gasses
reservoir
sediments
Opis:: The work detailed here concerned the CH₄ and CO₂ fluxes at the sediment-overlying water interface in Maziarnia and Nielisz Reservoirs, SE Poland. The research in question was conducted in the period of 2009-2011, the samples of sediment and overlying water were collected at two stations located in the upper and lower parts of each reservoir. The concentrations of CO₂ and CH₄ in pore water and overlying water were measured with the headspace method, using a Pye Unicam gas chromatograph (PU-4410/19) equipped with a methane analyzer allowing low CO₂ concentrations to be detected. Diffusive fluxes of the analyzed gases at the sediment-overlying water interface were calculated on the basis of Fick’s first law, and were found to range from -0.01 to 3.48 mmol×m^-2×d^-1 for CH₄ and from -1.27 to 47.02 mmol×m^-2×d^-1 for CO₂. Comparable fluxes elsewhere typify the reservoirs experiencing far-reaching eutrophication. No dependent relationships were found between the values calculated for fluxes and either season of the year or sediment characteristics.
Źródło:: Journal of Ecological Engineering; 2018, 19, 5; 158-164
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The Use of Methane in Practical Solutions of Environmental Engineering
Autorzy:: Skorek, A.
Włodarczyk, R.
Powiązania:: https://bibliotekanauki.pl/articles/123709.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biogas
hydrogen
low-temperature fuel cells
methane
Opis:: Methane is the main component of the basic conventional fuels used in modern energetics – natural gas, as well as an essential component of renewable fuel like biogas. As a result of technological processes, methane can be extracted from hydrogen fuel which is dedicated to low-temperature fuel cells, generators or electric current and heat. The article presents an analysis of the possibilities of using methane to produce electricity, practical solutions and the problems that inhibit the implementation of fuel cell technology.
Źródło:: Journal of Ecological Engineering; 2018, 19, 2; 172-178
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Recent Challenges of Biogas Production and its Conversion to Electrical Energy
Autorzy:: Syahri, Siti Noor Khaleeda Mhd
Abu Hasan, Hassimi
Abdullah, Siti Rozaimah Sheikh
Othman, Ahmad Razi
Abdul, Peer Mohamed
Azmy, Raja Farzarul Hanim Raja
Muhamad, Mohd Hafizuddin
Powiązania:: https://bibliotekanauki.pl/articles/2068475.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biogas
methane gas
electrical energy
anaerobic digestion
energy
Opis:: A pressing concern of issues such as climate change has drawn main attention in the world. The burning of fossil fuels by human due to increasing energy demand in various sectors is one of the main factors that influence the climate change. This has resulted in the introduction of many renewable energy sources as alternatives to fossil fuels. Biogas is one type of renewable energy that has numerous advantages. The present review covers the recent challenges of biogas production and its conversion to electrical energy. This includes the substrates used, the operating parameters, and the pre-treatment used, which can be implemented to maximise the biogas yield. The challenges and potential of the generation of electricity from biogas were also discussed in this review. The results obtained in this review emphasise that biogas is a good renewable energy, as it solves multiple problems and at the same brings benefits to human beings in many ways.
Źródło:: Journal of Ecological Engineering; 2022, 23, 3; 251--269
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Characteristics of Municipal Waste Biodegradable Fraction and Evaluation of its Processing
Autorzy:: Meller, E.
Jarnuszewski, G
Rogalska, P.
Baran, M.
Powiązania:: https://bibliotekanauki.pl/articles/123446.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: municipal waste
biodegradable waste
methane fermentation
composting
biogas
Opis:: A growing interest in Renewable Energy Sources initiated the use of biogas as an energy generating material. Biodegradable waste coming from different streams is an important resource for biogas production. The studies were conducted on 20–80 mm fraction of municipal waste separated by rotary screen in the technological process of The Waste Recovery and Storage Plant in Leśno Górne. Morphological composition of the examined waste and their parameters determining their usefulness for composting and fermentation were analysed. On the basis of organic carbon content, the amount of biogas that may be produced from 1 kg of waste was estimated. An approximate amount of biogas which can be obtained in the process of methane fermentation from energy piles, formed from 10 000 Mg of waste was also calculated. Depending on the temperature it was from. 2.8 to 3.8 mln m³.
Źródło:: Journal of Ecological Engineering; 2015, 16, 5; 133-137
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Estimation of Methane Emissions from Mirash Municipal Solid Waste Sanitary Landfill, Differences between IPPC 2006 and LandGEM Method
Autorzy:: Dimishkovska, Biserka
Berisha, Afrim
Lisichkov, Kiril
Powiązania:: https://bibliotekanauki.pl/articles/124901.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: emissions
methane
municipal solid waste
MSW
sanitary landfill
Mirash
Opis:: This paper deals with the estimation of methane emissions from the Mirash municipal solid waste sanitary landfill. The methane emission was calculated according to two different methodologies, namely, IPCC 2006 and LandGEM. Within the framework of the research, the following parameters were evaluated: the amount of landfilled waste, landfill characteristics, and composition of landfilled waste as well as the climate conditions prevailing in the region. According to the IPCC methodology, the total amount of methane emitted from the Mirash landfill during the period 2006–2017 was 30.57 Giga grams (Gg), while according to the LandGEM methodology, the total amount of methane emitted from the Mirash landfill in the period 2006–2017 was 26.32 Giga grams (Gg). The total mass of CH₄ in the Mirash regional landfill for the years 2018–2025 is projected to be 53.74 Gg according to the IPCC method, while according to LandGEM method, the projection points to 50.74 Gg. This study was carried out for the sanitary landfill for solid waste management in Mirash, Prishtina Region, in the Republic of Kosovo, during the year of 2018.
Źródło:: Journal of Ecological Engineering; 2019, 20, 5; 35-41
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Impact of Nanoparticles on Biogas Production from Anaerobic Digestion of Sewage Sludge
Autorzy:: Heikal, Ghada
Shakroum, Mohamed
Vranayova, Zuzana
Abdo, Ahmed
Powiązania:: https://bibliotekanauki.pl/articles/2173380.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biogas
methane
wastewater
sludge
anaerobic digestion
nanomaterial
magnetic nanoparticles
Opis:: Since anaerobic digestion (AD) is the preferred procedure for sludge treatment and disposal, it is constrained by the hydrolysis and acidogenesis stages. Nanomaterials have an impact on the AD process due to their unique properties (large specific surface areas, solubility, adsorption reduction of heavy metals, degradation of organic matter, reduction of hydrogen supplied and catalytic nature) which make them advantageous in many applications due to their effectiveness in improving the AD efficiency. Magnetic Nanoparticles (MNPs) were used in the present study to improve the biogas production. The experiments were divided into two stages to evaluate the effect of adding MNPs to two types of sewage sludge (SS): attached growth process (AG) and activated sludge (AS). The first stage consists of 15 tests divided into three experiments (A, B, and C). Doses of MNPs (20, 50, 100, 200) mg/l were added to all digesters in the same experiment except for one digester (the control). Experiments A, B and C achieved the highest biogas production when 100 mg/l of MNPs was added. They were 1.9, 1.93 and 2.07 times higher than the control for A, B and C respectively. The second stage consists of 12 tests with a pretreatment for some of SS. It was divided into two experiments (D, E), where the chemical pretreatment was applied to experiment D and the thermal pretreatment was applied to experiment E except for the control. For digester D4, which had 100 mg/l of MNPs after a chemical pretreatment at pH = 12, the biogas production increased by 2.2 times higher than the control (D0) and 1.5 times higher than the untreated sludge with the addition of 100 mg/l MNPs (DN). Thermal pretreatment at 100 °C with addition of 100 mg/l MNPs (E4) achieved a biogas yield 2 times higher than the control (E0), and 1.39 times higher than untreated sludge with 100 mg/l MNPs (EN). The previous results indicate that the integration of magnetite can serve as the conductive materials, promoting inherent indirect electron transfer (IET) and direct interspecies electron transfer (DIET) between methanogens and fermentative bacteria which lead to a more energy-efficient route for interspecies electron transfer and methane productivity. This study demonstrated the positive effect of magnetite on organic biodegradation, process stability and methane productivity.
Źródło:: Journal of Ecological Engineering; 2022, 23, 8; 222--240
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Influence of Ultrasonic Disintegration on Efficiency of Methane Fermentation of Sida hermaphrodita Silage
Autorzy:: Dudek, M.
Rusanowska, P.
Zieliński, M.
Dębowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/124893.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: ultrasonic disintegration
methane fermentation
Sida hermaphrodita silage
biogas production
Opis:: The technologies related to the anaerobic decomposition of organic substrates are constantly evolving in terms of increasing the efficiency of biogas production. The use of disintegration methods of organic substrates, which would improve the efficiency of production of gaseous metabolites of anaerobic bacteria without the production of by-products that could interfere with the fermentation process, turns out to be an important strategy. The methane potential of commercially available biodegradable raw materials is huge and their effective use gives the prospect of obtaining an important renewable energy carrier in the form of biogas rich in methane. Ultrasonic disintegration may play a special role in the pre-treatment of substrates subjected to methane fermentation. The pre-treatment based on ultrasonic sonication has a positive effect on the availability of anaerobic compounds released from cellular structures for microorganisms. The research was aimed at determining the influence of ultrasonic sonification on the anaerobic distribution of the organic substrate used, which constituted the mallow silage along with cattle manure with hydration of 90%. The research was carried out using the UP400S Ultrasonic Processor. The disintegration process was applied in two technological variants. The efficiency of biogas and methane production was determined depending on the technological variant used and the time of disintegration. The influence of sonication time on the effectiveness of anaerobic transformation was demonstrated. The highest biogas yield and methane production potential was recorded at 120s. The prolongation of the action time of the ultrasonic field did not significantly increase the biogas production. The use of disintegration of liquid manure as the only medium for the propagation of ultrasonic waves was sufficient to increase the production of gaseous metabolites of anaerobic bacteria. Subjecting the substrate additionally containing mallow silage to the process to sonication did not significantly affect the efficiency of the fermentation process. The percentage of methane in the biogas produced was independent of the pre-treatment conditions of the substrate and was in the range of 66-69%.
Źródło:: Journal of Ecological Engineering; 2018, 19, 5; 128-134
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Wyszukujesz frazę "Methane" wg kryterium: Temat

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