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001-es BibID:BIBFORM094513
Első szerző:Werle Vogel, Felipe
Cím:Biodegradation assessment of agricultural wastewater in an anaerobic tank reactor using microalgae / Werle Vogel Felipe, Nagy Péter Tamás, Tóth Florence, Tamás János, Magyar Tamás
Megjegyzések:The anaerobic digestion is a well-known method in the waste management field used to transform biodegradable 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 processes of organic wastewater. Microalgae (Chlorella vulgaris) was 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 during the fermentation process, since microalgae can be a potential source for biofuel production and nutrient generation for plants.The biodegradation process was studied for one month in an anaerobic tank reactor. The fermentation process and the 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. The process temperature was set up to the thermophilic range (45?C)resulting in a hydrolysis, acidogenesis, acetogenesis and methanogenesis phase of 24, 22, 295, and 170 hours respectively. In addition, a biogas yield of 1.92 dl was achieved by the end of the methanogenesis phase.During the process, the concentration ofnutrients showed logarithmical tendencies and COD showed power tendency in time. The extent and the direction of the changes were in correspondence with the 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 előadáskivonat
anaerobic digestion
organic wastewater
Megjelenés:International Symposium on Environment, Health and Safety (ISEHS) 2021: Book of Abstracts. - p. 9
További szerzők:Nagy Péter Tamás (1970-) (vegyész) Tóth Florence Alexandra (1973-) (biológus, molekuláris- és sejtbiológia) Tamás János (1959-) (környezetgazdálkodási agrármérnök) Magyar Tamás (1987-) (környezetgazdálkodás)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
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