Találati lista | Tudóstér

001-es BibID:	BIBFORM096172
Első szerző:	Bai Attila (agrár-közgazdász)
Cím:	Economic analysis of some agrotechnical factors in maize production - a Hungarian case study / Attila Bai, Zoltán Gabnai, Imre Kovách, Ibolya Czibere, János Nagy, Dénes Sulyok, Donika Maloku, Péter Balogh
Dátum:	2019
ISSN:	1789-221X 1789-7874
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk
Megjelenés:	Apstract. - 13 : 3-4 (2019), p. 5-16. -
További szerzők:	Gabnai Zoltán (1988-) (gazdasági agrármérnök) Kovách Imre (1953-) (szociológus) Czibere Ibolya (1965-) (szociológus, szociálpolitkus) Nagy János (1951-) (agrármérnök, mérnök-tanár) Sulyok Dénes (1978-) (agrármérnök) Maloku, Donika (1993-) Balogh Péter (1970-) (agrármérnök)
Pályázati támogatás:	EFOP-3.6.2-16-2017-00001 EFOP NKFIH-1150-6/2019 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

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
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM107054
Első szerző:	Gabnai Zoltán (gazdasági agrármérnök)
Cím:	Development of the European Union's environmental policy and its measures for climate protection : a review / Zoltán Gabnai
Dátum:	2022
ISSN:	1789-221X 1789-7874
Megjegyzések:	The negative impacts of human activities on the environment and nature can be felt worldwide. Thus there is a growing focus on measurements that keep sustainability in mind. As one of the main pioneers of environmental protection and sustainability efforts, these aspects are more and more prevalent in the current environmental policy of the European Union (EU). In this review article, the development of the environmental policy of the EU is presented. After listing the main milestones, the role of the EU in the area of environmental protection, the frameworks built around the goals and the roles of the institutions are discussed. Then - with an international detour - the details of the Paris Agreement about climate change and the state of the 20/20/20 commitments are summarised. In the remaining parts of the article, the focus is on the climate protection goals of the EU for the next three decades, the expected future directions, and the agenda of the von der Leyen Commission concerning climate protection. An important step and tool for achieving the goals set until 2050 is to incorporate climate and environmental protection elements to the 2021-2027 budget of the EU. In order to achieve the expected effects, it is crucial to develop the right tools of the environmental policy, to form a widespread cooperation, to raise awareness, and incentivise and support the innovative solutions in the sustainability area.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk climate action environmental strategy Paris Agreement sustainability
Megjelenés:	Apstract. - 15 : 1-2 (2022), p. 5-13. -
Pályázati támogatás:	ÚNKP-20-4 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM074392
Első szerző:	Gabnai Zoltán (gazdasági agrármérnök)
Cím:	Energy alternatives in large-scale wastewater treatment / Gabnai Zoltán
Dátum:	2017
ISSN:	1789-221X 1789-7874
Megjegyzések:	In my article, after describing the characteristics of recent wastewater treatment activity, I introduce different traditional and innovative energetic opportunities of the compulsory waste management activities at large-scale operational level, covering national and international examples. Furthermore, the wastewater-based biomethane production and the certain plant's energy self-sufficiency are highlighted topics as well. In the former case, it is possible to utilize the wastewater-based biomethane as fuel (and even to operate own vehicle fleet), while the second one gives the opportunity for the internal usage of produced electricity and waste heat, which can also result in significant cost-savings. As an additional option, algae-based wastewater post treatment is presented, based on the conditions of a Hungarian wastewater treatment plant, which biogas production efficiency and thus energy self-sufficiency has developed favourably due to the technological improvements. These plants may have a twofold role in the future: they are responsible for the compulsory waste management activity and on the other hand they can serve as excellent raw material mines.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény hazai lapban wastewater treatment activated sludge biogas algae biomethane
Megjelenés:	Apstract. - 11 : 3-4 (2017), p. 141-146. -
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: