Wszystkie pola: energy process - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Sonification Energy in the Process of Ultrasonic Disintegration
Autorzy:: Wolski, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/123853.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sewage sludge
disintegration
sonication energy
Opis:: Disintegration of sewage sludge leads to the breakdown of the structure of the sewage floc and release of intracellular fluids. This allows for easy removal of organic compounds that are contained in the cells during further processes of treatment of waste and processing of sludge. One of the methods of disintegration is the use of ultrasound field energy. Depending on the applied process parameters (exposure time, intensity), coagulation or dispersion of the sludge flocs may occur. The aim of the research was to determine the amount of sonication energy supplied to the sludge and the related costs of the disintegration process. The study used digested sewage sludge, which was exposed to ultrasound field energy of different intensity (from 1.6 W/cm² to 3.8 W/cm²) and exposure time (from 2 to 120s). The sewage sludge sonication process was conducted using Sonics VCX-1500 ultrasonic processor with a maximum output power of 1500W. The vibration frequency of the ultrasound field of the generator was 20 kHz, whereas the maximum wavelength for the 100% amplitude, was 39.42 µm. Energy demand was recorded during each measurement and the amount of sonication energy supplied to the system was calculated relative to dry matter. The experiments showed an increase in the demand for energy along with the extension of the exposure time and the increase in the intensity of the ultrasound field. For two of sludge samples with comparable dry matter content, the sonication energy values were similar.
Źródło:: Journal of Ecological Engineering; 2020, 21, 3; 36-40
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Właściwości fizyczno-chemiczne stałych i ciekłych produktów odpadowych pochodzących z procesu zgazowania roślin energetycznych zanieczyszczonych metalami ciężkimi
Physico-chemical properties of the solid and liquid waste products from the heavy metal contaminated energy crops gasification process
Autorzy:: Werle, S.
Ziółkowski, Ł.
Pogrzeba, M.
Krzyżak, J.
Ratman-Kłosińska, I.
Burnete, D.
Powiązania:: https://bibliotekanauki.pl/articles/950015.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: fitoremediacja
metale ciężkie
zgazowanie
rośliny energetyczne
phytormediation
heavy metals
gasification
energy crops
Opis:: Oczyszczanie gleb za pomocą roślin (tzw. fitoremediacja), skojarzone z produkcją biomasy na cele energetyczne, niesie za sobą szereg problemów istotnych z praktycznego i technicznego punktu widzenia. Dotyczą one przede wszystkim sposobu konwersji termicznej wyprodukowanej biomasy na energię w sposób efektywny i bezpieczny dla środowiska. Jednym ze sposobów może być zgazowanie. Proces ten polega na przekształcaniu substancji organicznej w palną mieszaninę gazów przez częściowe utlenienie w wysokiej temperaturze pod wpływem czynnika zgazowującego (powietrza, tlenu, pary wodnej lub mieszanin tych składników). Zgazowanie ma na celu uzyskanie palnego gazu. Niestety powstawaniu gazu towarzyszy również powstawanie stałych i ciekłych produktów odpadowych. W pracy przedstawiono rezultaty badań podstawowych właściwości fizyczno-chemicznych stałych (popiół) i ciekłych (smoły) produktów odpadowych pochodzących z procesu zgazowania roślin energetycznych uprawianych na terenie zdegradowanym ekologicznie. Proces zgazowania prowadzono w laboratoryjnym reaktorze ze złożem stałym. Wykorzystano trzy rodzaje roślin energetycznych: Miskant olbrzymi, Ślazowiec pensylwański i Spartyna grzebieniasta. Rośliny pozyskano z gruntów ornych zanieczyszczonych metalami ciężkimi zlokalizowanych w okolicach Bytomia na Górnym Śląsku. Wyniki pokazują, że zgazowanie jako proces przekształcania substancji organicznej w gaz przy jednoczesnej produkcji stałych i ciekłych produktów odpadowych, promuje migrację szkodliwych związków, takich jak metale ciężkie, występujących w paliwie do fazy stałej i ciekłej.
Treatment of the soil by plants (phytoremediation), associated with the production of biomass for energy purposes, carries a number of significant problems with a practical and technical point of view. They concern mainly the way of the thermal conversion of biomass to energy production in an efficient and environmentally safe way. One way may be gasification. This process involves the conversion of organic matter into a combustible gas mixture by partial oxidation at high temperature under the influence of gasifying agent (air, oxygen, steam, or mixtures of these components). Gasification aim is to obtain a combustible gas. Unfortunately, the formation of gas also accompanied by the formation of solid and liquid waste products. The paper presents the results of basic physico-chemical properties of solid (ash) and liquid (tar) waste products of the gasification process of the heavy metal contaminated energy crops. The gasification process has carried out in a laboratory fixed bed reactor. Three types of energy crops: Miscanthus x giganteus, Sida hermaphrodita and Spartina Pectinata were used. The experimental plots were established on heavy metal contaminated arable land located in Bytom (southern part of Poland, Silesian Voivodship). The results show that the gasification process, promotes the migration of harmful substances such as heavy metals from fuel to the solid phase.
Źródło:: Inżynieria Ekologiczna; 2017, 18, 1; 36-42
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Pollution Indicator of a Megawatt Hour Produced in Cogeneration – the Efficiency of Biogas Purification Process as an Energy Source for Wastewater Treatment Plants
Autorzy:: Ciuła, Józef
Kowalski, Sławomir
Wiewiórska, Iwona
Powiązania:: https://bibliotekanauki.pl/articles/24201631.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biogas purification
cogeneration
pollution indicator
renewable energy
sewage treatment plant
Opis:: The sewage treatment plant, as a producer of renewable energy, should make every effort to ensure that the biogas used as a fuel meets the quality requirements, including those of the manufacturers of cogeneration units. Such measures necessitate the application of a conditioning process of biogas in order to remove harmful compounds, so that its parameters ensure failure-free operation of engines. The aim of the research was to evaluate the effectiveness of biogas treatment in the A-type installation using the “wet biogas treatment” technology, and in the B-type installation, which is a comprehensive solution comprising sulfur removal as a result of a simultaneous regeneration of the bed with oxygen, removal of siloxanes on activated carbon, cooling and heating of biogas along with its filtration. The analysis of the results of biogas testing for these two installations demonstrated fundamental qualitative differences for the benefit of the installation B, in which the biogas was characterized by a much lower content, mainly of sulfur, hydrogen sulfide, siloxanes and humidity. The introduced pollution indicator of a megawatt hour produced in cogeneration one has confirmed much higher pollution load from the A-type installation. The hybrid solution applied in the work with simultaneous regeneration of the bed has confirmed the efficiency of biogas conditioning. Such a solution contributes to a safe and reliable operation of the cogeneration system for generating energy from a renewable source, which in turn contributes to the optimization of energy.
Źródło:: Journal of Ecological Engineering; 2023, 24, 3; 232--245
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Application of the Ozonation Process for Shaping the Energy Properties of the Surface Layer of Polymer Construction Materials
Autorzy:: Kłonica, Mariusz
Powiązania:: https://bibliotekanauki.pl/articles/2027827.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: surface layer
ozone
polymer material
surface free energy
Opis:: The properties of the surface layer of construction materials are very important for making adhesive bonds. The article presents the test results for surface free energy in PA6 polyamide subjected to surface layer modification using the ozonation process. To develop the surface geometrically, the samples were subjected to mechanical processing. The comparison of results demonstrated that ozonation is an efficient and eco-friendly method of modifying the surface layer. The article also presents the comparison results for measurements of selected surface roughness parameters.
Źródło:: Journal of Ecological Engineering; 2022, 23, 2; 212-219
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Revised Input-Output Table to Determine Total Energy Content and Total Greenhouse Gas Emission Factors in Thailand
Autorzy:: Sutthichaimethee, P.
Ariyasajjakorn, D.
Powiązania:: https://bibliotekanauki.pl/articles/125299.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: input-output analysis
full energy chain analysis
FENCH
life cycle analysis
process chain analysis
greenhouse gas emission factor
energy consumption
Opis:: A full energy chain analysis (FENCH) or a life cycle analysis (LCA) is indeed essential in making any decision on both minimal greenhouse gas (GHG) emissions and the energy content in various commodities. In this article, the energy Input-Output Analysis (IOA) approach is investigated to determine the factors for the total greenhouse gas emission and total energy content, and it deems the elimination of the boundary constraints existing in the Process Chain Analysis (PCA) approach to be practical to. This study, aims to identify the factors in embedded energy and embedded greenhouse gas (GHG) total values derived from the total Thai economic sectors of 180 in various commodities productions. The previous outdated IOA is enhanced in the study by revising the elements of sectoral energy consumption in the power sector, which is later found to be influential and significant to all other economic sectors. In addition, the 2005 sectoral energy consumption is used to show individual energy consumption, whereas the 2010 Input-Output (I-O) table, most timely data, is used to show the economic structure. Furthermore, the study uses a report of Thai electric power to revise the data of 2005 fuel mix in the power sector in order to obtain the 2010 and 2015 fuel mix. The reason of such revision is that the changes of fuel mix in the power sector are influential towards the factors in both total energy content and total greenhouse (GHG) emission. Hence, the 2015 electricity-fuel mix is taken to present the above-mentioned factors.
Źródło:: Journal of Ecological Engineering; 2017, 18, 6; 166-170
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Methodology for Energy Efficiency and Sustainability Improvement of Batch Production Systems on the Example of Autothermal Thermophilic Aerobic Digestion Systems
Autorzy:: Vaklieva-Bancheva, Natasha
Vladova, Rayka
Kirilova, Elisaveta
Powiązania:: https://bibliotekanauki.pl/articles/124725.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sustainability
energy integration
batch production system
mathematical modeling
stochastic optimization
ATAD process
Opis:: The present study proposes a methodology for energy efficiency and sustainability improvement of the operating conditions of batch production systems. The methodology involves applying a conventional system for municipal wastewater treatment using the process of Autothermal Thermophilic Aerobic Digestion (ATAD) of sludge. Its sustainable operation is essential for the quality of the treated sludge and the reduction of environmental impact. An analysis of the possibilities for energy integration of processes in ATAD systems was performed. The structures for indirect energy integration of processes using storage tanks and mathematical models for describing energy integration for the studied object were proposed. The models are included within a two-stage stochastic optimization problem together with constraints on the physical, technical and technological feasibility of the integration frameworks and temperature constraints with an optimization criterion minimum redesign cost. The obtained results show significant energy savings as a result of energy integration and sustainability to temperature conditions in bioreactors.
Źródło:: Journal of Ecological Engineering; 2019, 20, 9; 103-115
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Synthetic Gas Production from Fine Coal Gasification Using Low-Cost Catalyst
Autorzy:: Andican, Akbar
Faizal, Muhammad
Said, Muhammad
Aprianti, Nabila
Powiązania:: https://bibliotekanauki.pl/articles/2086400.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: syngas
natural zeolite
thermochemical process
energy
Opis:: The utilisation of fine coal waste is still limited, even though its availability is very abundant in the mining industry. This study utilises fine coal by converting it into syngas through catalytic gasification. The gasification process was carried out at a temperature range of 350–550°C for 10–50 minutes using natural zeolite as a catalyst. The syngas composition and quality parameters were evaluated through the H2/CO ratio, heating value, and gasification efficiency. From the research results, fine coal contained high amounts of carbon and fixed carbon. Temperature is the variable that most influences the gasification process. The addition of zeolite actively increased the CO content in the syngas. The H2/CO ratio of syngas >1, the highest HHV and LHV 16.15 and 14.46 MJ/Nm3 with the highest carbon conversion efficiency value of 88.85%, made fine coal very suitable to be used as raw material for the gasification process to produce environmentally friendly syngas.
Źródło:: Journal of Ecological Engineering; 2022, 23, 5; 64--72
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Time-Spatial Analysis of the Functioning of the Water Distribution System in the Mathematical Modeling Process
Autorzy:: Trębicka, Agnieszka
Powiązania:: https://bibliotekanauki.pl/articles/2105269.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: mathematical model
pumping station
water distribution system
failure analysis
energy
Opis:: This paper presents the process of the temporal and spatial functioning of the water distribution system in the mathematical modeling process. The research was carried out on the Bialystok water network model with particular emphasis on the efficiency and energy efficiency of the pumping units located on the analyzed water distribution system (SDW). The calculations and calibration of the model were performed using the ISYDYW software, with particular emphasis on time and spatial distribution. Particular situations were analyzed, especially when the system operated in exceptional conditions, which most often resulted in failure, leading to a shortage of water supply, and thus energy losses of the pumping units. The obtained results allowed demonstrating the auxiliary role of the simulation method in determining and predicting the effects on the existing emergency states. Possible scenarios were prepared for the observed changes, both in the entire network and at the selected points of the pump systems. Assuming the duration of the failure, its consequences were determined and presented in the form of the indicators discussed.
Źródło:: Journal of Ecological Engineering; 2022, 23, 6; 90--99
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Current State, Challenges and Perspectives of Biological Production of Hydrogen in Dark Fermentation Process in Poland
Autorzy:: Kozłowski, Kamil
Lewicki, Andrzej
Malińska, Krystyna
Wei, Qiao
Powiązania:: https://bibliotekanauki.pl/articles/124446.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: renewable energy sources
biohydrogen
dark fermentation
wastes management
biogas plants
Opis:: The increasing demand for electrical energy and environmental concerns associated with conventional means of its generation drive the interest in alternative fuels. Biohydrogen, widely considered as fuel of the future, is one of such alternatives. To date, research results suggest that biological routes are the most promising for hydrogen production, especially dark (hydrogen) fermentation. Hydrogen fermentation can be performed with agricultural and food processing wastes as substrates. In this paper the most important factors influencing dark fermentation are reviewed and analyzed. These are: pH, partial pressure, temperature, and retention time. The biohydrogen generation efficiency is also presented with respect to different substrates. It should be also pointed out that many factors are still unknown; thus, the process requires conducting further research.
Źródło:: Journal of Ecological Engineering; 2019, 20, 2; 146-160
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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