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1.

001-es BibID:BIBFORM112466
Első szerző:Bódi Erika (geológus, geográfus)
Cím:UAV-based heterogeneity analysis of soil-plant-water system of small-plot experiment with different oat genotypes under Si and S foliar fertilization treatments / Erika Budayné Bódi, Erika Kutasy, József Csajbók, Solange Paola Acosta Santamaría, Tamás Magyar, Nikolett Szőllősi, Zsolt Zoltán Fehér, Péter Tamás Nagy, Attila Nagy, Tamás János
Dátum:2023
Megjegyzések:Five winter oat (Avena sativa L.) varieties were set in a small-plot field experiment to examine the abiotic stress considering silicone and sulphur foliar fertilization treatments under temperate and dry climatic conditions in Hungary. Numerous in situ and laboratory measurements were performed to describe the crop's condition at various phenological stages. Drones with multispectral, thermal and LiDAR payloads monitored the field both with high temporal and spatial resolution. A high level of GIS data assimilation was performed in order to handle the different spatial-related parameters in one interface. It is a multi-purpose experiment, and for all of them it is an important criterion whether the study was carried out in a truly homogeneous area. Practically, it means that we ignore the patterns of the crop or the soil. If this is not the case, the various parameters measured should be evaluated accordingly. Hence, our study's main goal here is to reveal the soil and crop heterogeneity level. For this, all the measured parameters are involved in the multi-parameter analysis by which the heterogeneity level of the site can be assessed. Practically, by this, we can answer the main question: is the field suitable to carry out analysis such as abiotic stress studies or yield prediction modelling on it or shall we handle certain parts differently? Based on the example of our experiment we design a workflow by which the heterogeneity level of a small-plot field can be assessed and provide a solution for how to handle it in order not to involve data which may mislead analysis.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat
könyvrészlet
Megjelenés:EGU General Assembly 2023 : SSS9.1 : Agrogeophysics: understanding soil-plant-water interactions and supporting agricultural management with geophysical methods : Posters on site / co-organized by BG2. - p. EGU23-15692
További szerzők:Kutasy Erika (1974-) (agrármérnök) Csajbók József (1964-) (agrármérnök) Solange Paola Acosta Santamaría (1995-) (egyetemi hallgató) Magyar Tamás (1987-) (környezetgazdálkodás) Szőllősi Nikolett (1983-) (gazdasági agrármérnök) Fehér Zsolt Zoltán (1984-) (geoinformatika) Nagy Péter Tamás (1970-) (vegyész) Nagy Attila (1982-) (környezetgazdálkodási agrármérnök) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:TKP2021-NKTA-32
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2.

001-es BibID:BIBFORM094515
Első szerző:Damak, Mariem
Cím:Statistical evaluation of composting processes in an automated aerobic fermentation system / Mariem Damak, Nagy Péter Tamás, Tóth Florence, Magyar Tamás
Dátum:2021
Megjegyzések:The poultry industry is a very dynamic sector that is continuously growing all over the world generating an extensive amount of organic waste. Composting is a sustainable and effective method for the treatment of biodegradable wastes, therefore integrating the recycling process into the circular economy of agriculture. The quality of the mature compost can be controlled by the proper adjustment of initial parameters of the feeding material and the operational circumstances. In the present paper, the above mentioned key parameters of the composting processes were investigated seasonally (spring, summer and autumn 2019) in an aerobic fermentation system. Our results pointed out that the composting stages can be separated based on the temperature and the moisture content. The length of the fermentation stages and their proportion were determined by the chemical composition and the initial temperature of the feeding material which have a significant effect on the product quality as well. It was observed that the length of the thermophilic stage was the double in the summer period which resulted in an intensive fermentation, than in case of the spring and autumn periods, where similar temperature tendencies were measured. The maximum temperature values were formed in the thermophilic phase (approx. 55?C) in each season, where the local minimum of ammonium concentrations were also detected due to the exact location of the manure turning and chopping mechanical (MTCM) system. As a result of the examinations, the fermentation technology can be significantly shortened. Furthermore, a statistical evaluation had been performed in order to find correlation among the investigated parameters. Linear correlations were statistically proven between the temperature and moisture content (R2=0.627; p<0.05) as well as ammonium content and temperature (R2=0.758; p<0.05). Moreover, based on the obtained results of the statistical analysis, it was concluded that the homogenization of the feeding material was not adequate during the fermentation process, therefore the development of the MTCM system is strongly suggested.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok előadáskivonat
könyvrészlet
poultry manure
composting process
key parameters
statistical evaluation
Megjelenés:International Symposium on Environment, Health and Safety (ISEHS) 2021: Book of Abstracts. - p. 11
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Tóth Florence (1973-) (biológus, molekuláris- és sejtbiológia) Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:GINOP-2.2.1-15-2017-00043
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3.

001-es BibID:BIBFORM112840
Első szerző:Londhe, Pretty
Cím:Investigation of the effect of aeration and temperature on microalgae cultivation in different nutrient solutions / Pretty Londhe, Péter Tamás Nagy, Tamás Magyar
Dátum:2022
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok előadáskivonat
könyvrészlet
microalgae
cultivation
aeration
circular economy
Megjelenés:Absztraktkötet : II. Környezet, Egészség, Biztonság (EHS) Nemzetközi Szimpózium = Book of abstracts : 2nd International Symposium on Environmental, Health and Safety (ISEHS) / [szerk. Bellér Gábor]. - p. 16.
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:ED_18-1-2019-0028
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4.

001-es BibID:BIBFORM117183
035-os BibID:(cikkazonosító)e23238 (WoS)001135702600001 (Scopus)85179434554
Első szerző:Magyar Tamás (környezetgazdálkodás)
Cím:Improvement of N and P ratio for enhanced biomass productivity and sustainable cultivation of Chlorella vulgaris microalgae / Tamás Magyar, Bence Németh, János Tamás, Tamás Nagy Péter
Dátum:2024
ISSN:2405-8440
Megjegyzések:Microalgae cultivation could contribute to the achievement of several sustainable development goals (SDGs). However, cultivating Chlorella vulgaris, like any other microalgae, is challenging due to various biotic, abiotic and process related factors that can affect its growth and biomass productivity. Nutrient availability, particularly N and P, and their ratio play a crucial role in building cellular structures and maintaining metabolic processes, determining basically the maximum achievable biomass productivity under given circumstances. The present article aims to improve the N and P ratio to enhance the biomass productivity of Chlorella vulgaris microalgae as well as to characterize the biomass growth kinetics that can be used for prediction purposes. The results showed that the nutrient solutions prepared with increased nitrate concentration (T1 - N:P = 55:1 and T3 - N:P = 28:1) promoted chlorophyll formation and significantly outperformed the control sample (BG-11 - N:P = 35:1) with 192% and 183%, leading to higher biomass productivity with 1160 mu g L-1 and 1103 mu g L-1, respectively. Moreover, a strong positive correlation was revealed (0.81) between phosphate concentration and microalgae activity rate, indicating the role of phosphorous in energy transfer, resulted in stimulated microalgae activity rates with 71.2% and 70.66% in the phosphate-increased nutrient solutions (T2 - N:P = 14:1 and T3 - N:P = 28:1). In addition, an exponential equation was introduced to characterize the biomass growth kinetics, of which the theoretically achievable maximum chlorophyll concentration (C-TAM) and the theoretical cultivation time (t(cultivation)) were determined for the tested nutrient solutions with variable N:P ratio. It was concluded, that the higher the N:P ratio, the higher the C-TAM is, nevertheless the absolute concentration of these nutrients need to be considered as well. The introduced two key parameters could provide valuable information for decision makers regarding the optimization of growth conditions, nutrient supplementation, and harvesting, additionally decreasing the production costs and making the cultivation cycles more effective and sustainable.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Sustainability
Microalgae
Biomass productivity
Growth prediction
N:P ratio
Megjelenés:Heliyon. - 10 : 1 (2024), p. 1-14. -
További szerzők:Németh Bence Tamás János (1959-) (környezetgazdálkodási agrármérnök) Nagy Péter Tamás (1970-) (vegyész)
Pályázati támogatás:RRF-2.3.1-21-2022-00008
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5.

001-es BibID:BIBFORM114557
Első szerző:Magyar Tamás (környezetgazdálkodás)
Cím:Investigation of biomass growth of Chlorella vulgaris microalgae in different nutrient solutions / Tamás Magyar, Bence Németh, Péter Tamás Nagy
Dátum:2023
ISBN:978-963-490-535-6
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok előadáskivonat
könyvrészlet
microalgae
chlorella vulgaris
biomass
sustainability
nutrient solution
Megjelenés:Sustainable and Innovative Solutions in Agriculture and Food Industry (SISAF'23) One Health approach / szerk. Veress Szilvia, Kocsisné Papp Mariett. - p. 47. -
További szerzők:Németh Bence Nagy Péter Tamás (1970-) (vegyész)
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6.

001-es BibID:BIBFORM094689
035-os BibID:(Scopus)85108577674
Első szerző:Magyar Tamás (környezetgazdálkodás)
Cím:Characterization of the biodegradation of synthetic and organic wastewater in an anaerobic tank reactor using microalgae / Tamás Magyar, Felipe Werle Vogel, Florence Tóth, Attila Nagy, János Tamás, Péter Tamás Nagy
Dátum:2021
ISSN:2062-0810 2063-4269
Megjegyzések:The anaerobic digestion is a well-known method in waste management of biodegradable wastes to transform waste to energy. Proper digestion requires optimal fermentation conditions to improve the quality and yield of biogas. The objective of this study was to characterize the biodegradation process of synthetic and organic wastewater. Microalgae (Chlorella vulgaris) were utilized as a bioindicator for anaerobic digestion and monitoring of the fermentation process. Besides bioindication, the viability of the microalgae and the chlorophyll concentration were also assessed in such fermentation processes, since microalgae can be a potential source for biofuel production and a plant nutrient. The biodegradation process was studied for a month in an anaerobic tank reactor. The fermentation processes and lengths of the fermentation stages were successfully monitored and separately identified based on the pH and gas development. Furthermore, the amount and dynamics of the biogas yield also revealed that the fermentation process was about 510 hours in both cases. In contrast, increased temperature in thermophilic range (45?C) accelerates the degradation processes and resulted in shorter hydrolysis (60 hours), acetogenesis (24 hours) and longer methanogenesis (81 hours) stages, where higher biogas yield was also achieved (59.3%). During the process, the concentration of nutrients showed logarithmical tendencies and COD showed power tendency in time. The extent and the direction of the changes were in correspondence with microalgae activity. In thermophilic circumstances, living microalgae biomass dropped significantly without recovery therefore such an environment is not a viable option for microalgae growth. Moreover, dead microalgae biomass seems to act as a substrate for fermentation slightly increasing the concentration of some nutrients in the wastewater.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
anaerobic tank reactor
degradation stages
synthetic and organic wastewater
microalgae
nutrients
biogas
Megjelenés:International Review of Applied Sciences and Engineering. - 12 : 2 (2021), p. 166-175. -
További szerzők:Werle Vogel, Felipe Tóth Florence (1973-) (biológus, molekuláris- és sejtbiológia) Nagy Attila (1982-) (környezetgazdálkodási agrármérnök) Tamás János (1959-) (környezetgazdálkodási agrármérnök) Nagy Péter Tamás (1970-) (vegyész)
Pályázati támogatás:ED_18-1-2019-0028
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7.

001-es BibID:BIBFORM088152
Első szerző:Magyar Tamás (környezetgazdálkodás)
Cím:Assessment of composting processes in an automated aerobic fermentation system based on key parameters / Magyar Tamás, Rebecca Mayes, Nagy Péter Tamás
Dátum:2020
ISSN:1820-7480 2560-3132
Megjegyzések:The poultry (broiler) industry is continuously increasing all over the world, therefore, the amount of waste generated in these facilities is also increasing. As a consequence of the above mentioned, the more efficient conversion of chicken manure to organic fertilizer is a key problem. The aims of the study are to investigate the changes in temperature and moisture content during composting of chicken manure in the oval tank fermentation system and to create a model for the evaluation of the performance of biodegradation processes. The moisture and temperature distribution models of the oval tank were created in Hydrus software. The results showed that the oval tank fermenter can be divided into two main zones. In the first zone, where the rate of biodegradation was relatively high, a heterogeneous temperature zone was found with continuously decreasing moisture content. The second zone was more homogenous in both temperature and moisture content. This stage represents the weak fermentation part of the technology and results in an elongated post fermentation section. Furthermore, statistically significant correlations were found between composting key parameters, such as ammonium content with temperature and organic matter content with organic nitrogen content. It was also concluded that the exact location of the manure turning and chopping mechanical system (MTCM) used for aeration had a high effect on the composting processes, as well as on the quality parameters of the mature compost.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Chicken manure
Fermentation
Composting
Temperature and moisture distribution model
Key parameters
Megjelenés:Recycling and Sustainable Development. - 13 : 1 (2020), p. 1-8. -
További szerzők:Mayes, Rebecca Nagy Péter Tamás (1970-) (vegyész)
Pályázati támogatás:GINOP-2.2.1-15-2017-00043
GINOP
ED_18-1-2019-0028
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8.

001-es BibID:BIBFORM086653
Első szerző:Nagy Péter Tamás (vegyész)
Cím:Study of the mineralisation of pelletized chicken manure at different soil moisture content of a sandy soil / Nagy Péter Tamás, Karanja Mary, Magyar Tamás
Dátum:2020
ISSN:2066-6276 2601-5676
Megjegyzések:This study evaluates the effect of soil moisture content on mineralization process of composted and pelletized chicken manure on pH, nitrate and ammonium contents at a sandy soil. To establish the mineralisation rate of the composted chicken manure in the soil a short soil incubation method was used. The objectives of the study were: (1) To assess the effects of three types of composted chicken manure on soil pH at different moisture contents conditions, (2) To assess the effects of the three types of composted poultry manure on soil easily soluble mineralised N forms (nitrate and ammonium) at different moisture contents. For study of mineralisation rate of composted and admixtured chicken manure pellet a short soil incubation experiment was set up. Beside the control three treatments, each containing 12 pots (three replicates for soil samples with four different moisture content; 40 %, 50 %, 60 % and 70 %) were used. The pH value and nitrate and ammonium contents and their changing were assessed after the first, second, third and fourth weeks respectively. In each of the four experiment blocks, the soil samples were subjected to four treatments: control, P+K, P+K "C", and Humin Plus. Statistical analysis of the data showed that the three manure types had significant impact on the soil nitrate and ammonium levels at different soil moisture conditions. No significant effect on soil pH was identified during the experiment period. This implies that in order to achieve optimum benefits from application of chicken manure on the farm, it is necessary to do soil testing to assess the nitrate and ammonium status of the soil first. This can provide a basis to make a well-informed decision on which manure is the best in the supply of either nitrate and ammonium to the soil depending on the soil amendment needs.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
mineralization of chicken manure
soil incubation
easily soluble N forms of soil
organic fertilization
Megjelenés:Natural Resources and Sustainable Development. - 10 : 1 (2020), p. 101-114. -
További szerzők:Karanja, Mary Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:GINOP-2.2.1-15-2017-00043
GINOP
ED_18-1-2019-0028
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9.

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
Dátum:2019
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
folyóiratcikk
chicken manure
fermentation
decompose
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 (1973-) (biológus, molekuláris- és sejtbiológia) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:GINOP-2.2.1-15-2017-00043
GINOP
NKFIH-1150-6/2019
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10.

001-es BibID:BIBFORM112841
Első szerző:Németh Bence
Cím:Mikroalga termeszthetőségének kísérleti vizsgálata különböző kémiai összetételű tápközegekben = Experimental investigation of cultivability of microalgae in different nutrient solutions / Németh Bence, Nagy Péter Tamás, Magyar Tamás
Dátum:2022
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok előadáskivonat
könyvrészlet
mikroalga
tápközeg
kultiváció
fenntarthatóság
Megjelenés:Absztraktkötet : II. Környezet, Egészség, Biztonság (EHS) Nemzetközi Szimpózium = Book of abstracts : 2nd International Symposium on Environmental, Health and Safety (ISEHS) / [szerk. Bellér Gábor]. - p. 11.
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:ED_18-1-2019-0028
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11.

001-es BibID:BIBFORM115525
Első szerző:Nurul, Amalina Nadya (MSC hallgató)
Cím:Advances in biomass growth of Chlorella vulgaris under various CO2 and pH achieving sustainable microalgae cultivation / Nadya Nurul Amalina, Péter Tamás Nagy, Tamás Magyar
Dátum:2023
Megjegyzések:Microalgae have an increasing interest in various sectors. They are photosynthetic organisms that utilize the sunlight to make various organic compounds from carbon fixation. Microalgae can be beneficial for the sustainability; it can assist with the achieving of several SDGs such as zero hunger (SDG-2), clean water and sanitation (SDG-6) as well as affordable and clean energy (SGD-7). However, the production of microalgae biomass is limited due to various nutritional and environmental conditions such as pH and CO2 concentration in the nutrient solution. So it is crucial to investigate the effects of different pH level and CO2 injections on microalgae (Chlorella vulgaris) cultivation. The aim of this research was to investigate the biomass growth of Chlorella vulgaris microalgae with special regards to the pH level of the nutrient solution (7, 9.6, 10.2 and 11.0) and CO2 injection (0 ml/min, 2 ml/min, 3.5 ml/min and 5 ml/min). The samples were investigated over a 6 weeks of period from a chemical as well as biological point of view. For the chemical measurements, PF-12 plus photometer with VisoColor test kits were used and the following parameters were measured: NH4+, NO3-, K+, PO43-, chemical oxygen demand (COD), pH and electric conductivity (EC). AlgaeToximeter II was used to determine the biological parameters such as chlorophyll concentration in different microalgae classes and microalgae activity rate. Moreover, the change in chlorophyll A was tracked over the examination period by a UV-Vis spectrophotometer. Based on the experiments performed in this study, the highest biomass growth was achieved in case of the 2 ml min-1 of CO2 injected sample with the value of 2,211 ?g L-1 in chlorophyll concentration, followed by the 3.5 ml min-1 of CO2 injected sample (1,504.6 ?g L-1 in chlorophyll concentration). Comparing the sample of 2 ml min-1 of CO2 injection to the control one (0 ml min-1), the biomass increase was found to be +60.8%, however the injected CO2 drastically decreased the microalgae activity rate from the initial value of 66.6% to 35.23%. Variable pH also had a significant effect on the biomass growth of Chlorella vulgaris microalgae. Neutral pH (7) resulted in the highest chlorophyll concertation with the value of 1,853.5 ?g L-1, moreover it was found that alkaline pH (9.6, 10.2 and 11.0) could have an impulsive stimulation effect on the biomass increase in the first 10 days. In the future, combining the 2 ml min-1 of CO2 injection with an alkaline pH nutrient solution could be a promising solution in order to shorten the cultivation time, while resulting in higher biomass generation, thus contributing to the sustainability.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok előadáskivonat
könyvrészlet
biomass growth
microalgae cultivation
nutrient solution
sustainability
Megjelenés:Absztraktkötet : III. Környezet, Egészség, Biztonság (EHS) Nemzetközi Szimpózium = Book of abstracts : 3 rd International Symposium on Environmental, Health and Safety (ISEHS). - p.22.
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Magyar Tamás (1987-) (környezetgazdálkodás)
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12.

001-es BibID:BIBFORM099231
035-os BibID:(Scopus)85122806282
Első szerző:Pacha-Herrera David
Cím:Microalgae cultivation integrated into agro-industrial wastewater treatment / Pacha-Herrera David, Nagy Péter Tamás, Magyar Tamás
Dátum:2021
ISSN:2416-2140
Megjegyzések:The world demands more and more energy due to the continuous population increase. In parallel, high organic and nutrient contents of wastewater streams are generated from anthropogenic activities like urbanization, industrialization, and agricultural practices. The continuous discharge of these wastewater streams into water bodies has been considered responsible for oxygen depletion and eutrophication in the environment. Integrating microalgae cultivation into wastewater treatment can be a promising solution to produce renewable energy while removing pollutants. In contrast to several review articles published about microalgae cultivation on different wastewater streams, the current review is focusing mainly on microalgae-based wastewater treatment on agricultural waste streams. Hence, first of all, the main characteristics of different agricultural streams will be described, then microalgal consortia cultivation, as well as monoculture strains, will be evaluated. Moreover, the photobioreactor systems for agricultural wastewater treatment will also be summarized. Finally, harvesting methods for microalgae recovery will be presented.
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
microalgae cultivation
agro-industrial wastewater
characteristics
photobioreactor
harvesting
Megjelenés:Ecocycles. - 7 : 2 (2021), p. 35-45. -
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
ED_18-1-2019-0028
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Intézményi repozitóriumban (DEA) tárolt változat
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