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001-es BibID:BIBFORM108999
Első szerző:Gabnai Zoltán (gazdasági agrármérnök)
Cím:Opportunities for wastewater heat recovery in Hungary and its role in the circular economy / Zoltán Gabnai, Kornél Németh, Erzsébet Péter, Ardit Sertolli, Albiona Pestisha, Nóra Mezőfi, Attila Bai
Dátum:2021
ISSN:1789-221X 1789-7874
Megjegyzések:Most of the energy content of wastewater can be found in wastewater heat, however, its recovery is limited. In this article, the current situation, future opportunities of wastewater heat recovery are presented based on secondary data collection, mentioning the constraints and main influencing factors of sustainable implementation of heat recovery systems in Hungary. Besides, the already existing systems are described. As regards the capacities of treatment plants, 103 of the 574 domestic plants have a capacity of over 20,000 Population Equivalent (PE), of which 25 plants have a capacity of over 100,000 PE. According to our calculations, in big cities/capitals (20.000 - 100.000, and over 100.000 inhabitants), it may be possible to recover wastewater heat sustainably in several places. In small towns (5.000 - 20.000 inhabitants), wastewater heat recovery can be technologically and economically sustainable only in the presence of agricultural or industrial plants with high and continuous wastewater feed into the pipeline system. Taking into account the temperature conditions at each place of use and their estimated fluctuations, it can be said that proper, careful planning, sizing and implementation have a crucial effect on the efficiency of microbiological activity in the treatment plants. In bigger cities, of course, the effect of the temperature drop of one main collector may be minimal, however, in smaller and medium-sized settlements, excessive heat extraction may result in complete inhibition or cessation of nitrification. In Hungarian case studies, the maximum acceptable temperature drop is approx. 2-3 °C. It can be stated that energy recovery from wastewater may be very promising considering the size and temperature limitations. Therefore, the rational recovery of wastewater heat can be an important part of the implementation of circular economy and sustainable energy utilization in wastewater management, resulting in significant energy savings and pollutant reduction.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
wastewater treatment
circular economy
energy management
heat energy
nitrification
Megjelenés:Apstract. - 15 : 3-4 (2021), p. 81-90. -
További szerzők:Németh Kornél (közgazdász) Péter Erzsébet (közgazdász) Sertolli, Ardit (1996-) (Ph.D. hallgató) Pestisha, Albiona Mezőfi Nóra (közgazdász) Bai Attila (1967-) (agrár-közgazdász)
Pályázati támogatás:2019-1.3.1-KK-2019-00015
Egyéb
TKP2020-IKA-04
Egyéb
ÚNKP-20-4
Egyéb
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2.

001-es BibID:BIBFORM115520
035-os BibID:(cikkazonosító)7209 (WoS)001095439600001 (Scopus)85175309505
Első szerző:Sertolli, Ardit (Ph.D. hallgató)
Cím:Theoretical and energy biomass potential of heat and electricity production in Kosovo / Ardit Sertolli, Attila Bai, Zoltán Gabnai, Tamás Mizik, Albiona Pestisha
Dátum:2023
ISSN:1996-1073
Megjegyzések:The energy use of residues from agriculture, forestry, and solid waste can foster the transition towards a more renewable energy supply. This paper analyzes the energy potential of the above-mentioned sources for energy applications in Kosovo. The analysis is based on statistical data from different studies and reports, analyzing and calculating them to determine the theoretical and energy biomass potential. Kosovo can increase its self-sufficiency by taking advantage of its rich but under-utilized potential of biomass energy sources. This is a novelty study in this area, considering Kosovo lignite-dominated heat energy and electricity consumption and the available special literature. According to our estimates, the theoretical potential is 6.13 million tons/year, while the biomass energy potential should be around 4.57 million tons/year, including approximately 74.6% of biomass, which can be used for energy needs (heating and electricity). Based on the data and calculations, the available and usable potential shows biomass as an energy source with high potential in Kosovo; its share is very low, but it is reasonable to grow for both environmental and economic reasons.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
renewable energy
energy production
renewable energy sources
bioenergy
energy potential
agriculture
forestry
solid waste
Megjelenés:Energies. - 16 : 20 (2023), p. 1-23. -
További szerzők:Bai Attila (1967-) (agrár-közgazdász) Gabnai Zoltán (1988-) (gazdasági agrármérnök) Mizik Tamás Pestisha, Albiona
Pályázati támogatás:TKP2021-NKTA-32
Egyéb
2019-2.1.13-TÉT_IN-2020-00061
Egyéb
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3.

001-es BibID:BIBFORM101887
035-os BibID:(cikkazonosító)5515 (WOS)000795224000001 (Scopus)85130048065
Első szerző:Sertolli, Ardit (Ph.D. hallgató)
Cím:Biomass Potential and Utilization in Worldwide Research Trends - A Bibliometric Analysis / Ardit Sertolli, Zoltán Gabnai, Péter Lengyel, Attila Bai
Dátum:2022
ISSN:2071-1050
Megjegyzések:Biomass, as a part of renewables, is a resource found in large quantities and is a basis for many different industries. This paper presents the most important trends and characteristics of research in biomass potential and biomass utilization on a world scale. The main objective of this work is to analyze the state of research and trends in biomass potential and biomass utilization from 1974 to 2021, including 7117 relevant documents. The methodology part comprised two main stages: obtaining data from Scopus and then exporting the data into Excel. The VOSviewer bibliometric tool was used to analyze clusters of countries and groups of keywords. Research on this topic experienced significant development after 2000; moreover, the global trend of publications marked a significant increase after 2012. China and India have shown exponential growth, followed by USA, Germany, and UK. An important trend globally is that energy topics are gaining more importance and percentage annually, especially in photovoltaics and new generations of biofuels in terms of keywords. The paper aims to provide a tool for the scientific community by introducing the current state and potential tendencies in this special field, including the various sides of biomass use.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Sustainability. - 14 : 9 (2022), p. 1-20. -
További szerzők:Gabnai Zoltán (1988-) (gazdasági agrármérnök) Lengyel Péter (1976-) (matematika tanár, informatikus, közgazdász) Bai Attila (1967-) (agrár-közgazdász)
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