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001-es BibID:BIBFORM091908
Első szerző:Gorliczay Edit (környezetgazdálkodási agrármérnök)
Cím:Maturity and stability evaluation of composted poultry manure / Gorliczay Edit, Tamás János, Bárány László
ISSN:2066-6276 2601-5676
Megjegyzések:Composting is one of the most popular recycling processes for organic waste. Compost is an inherently variable product produced from a wide variety of organic source materials known as feedstocks. The aim of our research was to examine the process of composting with maturity and stability parameters. The windrow composting experiments were set up in the composting area of the University of Debrecen, Institute for Water and Environmental Management and a mixture of broiler and hen manure was composted by adding zeolite (0, 1, 2, 5, 7 w/w %). The time for composting experiments was 62 days. We continuously measured the main parameters describing the composting processes: moisture content (w/w %), temperature (?C), pH, electrical conductivity (mS/cm), organic matter content (w/ w%). Based on our results, it can be concluded that the 50 w/w % moisture content is sufficient for composting in the case of the mixtures of substances tested by us. The four stages of composting can be separated by temperature, and the thermophilic phase is longer with increasing zeolite mixing. The value of pH ranged from pH 6.63 to 8.0, with lower pH values at the beginning and neutral at the end of the composting process. Electrical conductivity values decreased at the end of the composting process. Adding a higher percentage of zeolite reduced the content of organic matter, thereby increasing the mineral content. Overall, the parameters studied by us are suitable for determining the maturity of compost and for describing the composting process.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
poultry manure
Megjelenés:Natural Resources and Sustainable Development. - 10 : 1 (2020), p. 10-19. -
További szerzők:Tamás János (1959-) (környezetgazdálkodási agrármérnök) Bárány László (1952-) (ügyvezető igazgató)
Pályázati támogatás:GINOP 2.2.1.-15-2017-00043
Internet cím:Szerző által megadott URL
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001-es BibID:BIBFORM086416
Első szerző:Kiss Nikolett Éva (Környezetgazdálkodási agrármérnök)
Cím:Analysis of nutritional parameters of biogas slurry / Kiss Nikolett Éva, Tamás János, Gorliczay Edit, Gálya Bernadett, Nagy Attila, Jóvér János, Riczu Péter
Megjegyzések:Large amount of waste and by-products generated during livestock processes requires urgent treatment and disposal. The energy recovery of wastes and by-products can be a solution for the problem, since the biogas production is an obvious way of recovery. As a by-product of biogas production biogas slurry is produced and it is to be suitable for nutrient supply. The samples of the biogas slurry originate from the Nyírbátor Regional Biogas Plant. The plant is used for the disposal and recovery of plant residues, manure of cattle and poultry, poultry slaughterhouses and other animal wastes. The organic matter from the fermenter is separated. After separation, the dilute phase is transferred to the manure storage and the solid phase is transferred to a drying plant or composting plant. Aims of the study were the analysis of filtering efficiency of the separator, comparison of properties of the pre-separator and the separated fermentation residue, since the company wants to spread the biogas slurry to arable land and pasture in a frame of complex precision irrigation system. For this reason, the sampling points were planned to set both before and after separator processes. Samples were taken twelve times between February and June 2018. Among other properties, the dry matter content of the biogas slurry, C and N content, element content, pH, conductivity, biological and chemical oxygen demand were measured. Based on the element content and the N content, the biogas slurry is suitable for nutrient supply. The average dry matter content values of the samples show that the result of the separation process the dry matter content is significantly reduced (P<0.05). The salt content was very high in the samples both before and after separation. In order to prevent environmental stress, it is recommended to reduce the salt content before applying the biogas slurry.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
biogas slurry
nutritional parameters
precision irrigation
Megjelenés:Natural Resources and Sustainable Development. - 10 : 1 (2020), p. 57-66. -
További szerzők:Tamás János (1959-) (környezetgazdálkodási agrármérnök) Gorliczay Edit (1991-) (környezetgazdálkodási agrármérnök) Gálya Bernadett (1987-) (környezetgazdálkodási agrármérnök) Nagy Attila (1982-) (környezetgazdálkodási agrármérnök) Jóvér János (1988-) (környezetgazdálkodási agrármérnök) Riczu Péter (1986-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:EFOP-3.6.2-16-2017-00001
Internet cím:DOI
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001-es BibID:BIBFORM102673
Első szerző:Nagy Attila (környezetgazdálkodási agrármérnök)
Cím:Comparison of the effects of manure-based product and ammonium nitrate on maize (Zea mays L.) / Nagy Attila, Kiss Nikolett Éva, Gorliczay Edit, Tóth Florence, Szőllősi Nikolett, Tamás Janos
ISSN:2066-6276 2601-5676
Megjegyzések:The storage and application of huge amounts of deep litter manure could be a serious issue generated by livestock systems. As broiler litter has high N and fiber content, pre-treatment is strongly recommended. Composting is one of the key method of pre-treatment. Due to Georgakakis and Krintas (2000), Hosoya composting system is suitable for composting by-products with unfavourable properties such as poultry litter. The end-product (composted and pelletized poultry litter (CPPL)) is appropriate alternative to the substitute for chemical fertilizers, due to its pathogen-free, safe-to-use features and high organic content while it meets the requirements of the European Green Deal's goals. In the frame of research maize (ZEA MAYS L.) plant test was carried out to get information about the effects of CPPL and ammonium nitrate (AN) fertilizer in pot experiment conditions. Measurements cover the following analyses: the length of the roots, stems, and seedlings, the dry matter content, germination percent, Vigour-index, and chlorophyll and carotenoid content. On the whole, it can be stated that CPPL had higher stimulating impacts on measured parameters (root length, dry matter content, Vigour index) in comparison to AN with higher N content.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
composted and pelletized poultry litter
ammonium nitrate
pot experiment
European Green Deal
Megjelenés:Natural Resources and Sustainable Development. - 12 : 1 (2022), p. 73-86.
További szerzők:Kiss Nikolett Éva (1992-) (Környezetgazdálkodási agrármérnök) Gorliczay Edit (1991-) (környezetgazdálkodási agrármérnök) Tóth Florence Alexandra (1973-) (biológus, molekuláris- és sejtbiológia) Szőllősi Nikolett (1983-) (gazdasági agrármérnök) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:GINOP-2.2.1.-15-2017-00043
Internet cím:Szerző által megadott URL
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001-es BibID:BIBFORM082449
Első szerző:Nagy Péter Tamás (vegyész)
Cím:Evaluation of Parameters in an Aerob Industrial Fermentation System / Nagy Péter Tamás, Magyar Tamás, Gorliczay Edit, Berta Kitti, Tóth Florence, Tamás János
Megjegyzések:Meat chicken (broiler) industry continuously increasing all over the world. Due to it, the amount of waste from the chicken industry is also increasing. Therefore, more efficient conversion of chicken manure to organic fertilizer is key problem all over the world. Therefore, the aims of present study are to investigate the changes in temperature and moisture content during composting of chicken manure in a tank fermentation system and create a model to describe the biodegradation processes. In this study, Hydrus software was used for modelling the moisture and temperature distribution in the oval tank during the decomposing processes. It was found that the studied oval tank fermenter can be divided into two main parts considering to the changing of temperature and moisture level. In the first phase - after the intake - where the rate of biodegradation is high there is a heterogeneous temperature zone with decreasing moisture content. Moreover, in this stage a special temperature profile was found at the cross-sectional view of the tank. The second phase was more homogenous both in temperature and moisture content. This stage is the weak fermentation part of the technology results an elongated post fermentation section. It was established, that the changes of temperature and moisture content along the tank fermenter are the same and there is a strong connection between them in the examined period. Our results pointed out that the initial turning and mixing results in a large temperature and moisture content drop and later there is sufficient time for composting to take place. The authors recommend that this system could be used as an efficient treatment for chicken manure materials to decompose and get a valuable base organic fertilizer.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idegen nyelvű folyóiratközlemény külföldi lapban
chicken manure
temperature and moisture model
Megjelenés:Natural Resources and Sustainable Development. - 9 : 2 (2019), p. 221-232. -
További szerzők:Magyar Tamás (1987-) (környezetgazdálkodás) Gorliczay Edit (1991-) (környezetgazdálkodási agrármérnök) Berta Kitti Tóth Florence Alexandra (1973-) (biológus, molekuláris- és sejtbiológia) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:GINOP-2.2.1-15-2017-00043
Internet cím:Szerző által megadott URL
Intézményi repozitóriumban (DEA) tárolt változat
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