Increasing efficiency of biogas plants at the account of the addition to the substrate of agricultural waste
DOI:
https://doi.org/10.31548/energiya2020.02.005Abstract
Abstract. The article is devoted to the methodological foundations of increasing the efficiency of biogas plants by adding agricultural waste to the substrate, which is currently an urgent issue in the agricultural sector. It is known that the economic efficiency of existing biogas plants operating on livestock waste is very low. When cattle manure is fermented, the biogas yield is on average 0.7 l / h. kg of COP, does not provide a satisfactory return on investment even the sale of electricity generated from biogas at the "green" tariff. As the results of experimental studies show when adding cosubstrate in a small amount to a substrate based on cattle manure, the biogas yield increases to 1.4 l/h‧kg of COP and higher. The question arises in quantity before the substrate, it is necessary to add cosubstrate from agricultural waste to increase the efficiency of biogas plants.
The aim of the study is to develop methodological foundations for increasing the efficiency of biogas plants by adding a rational amount of agricultural waste to the substrate.
To achieve this goal, a laboratory biogas plant consisting of a 30 L digestion tank and a "wet" type gas tank was used to conduct experimental studies of methane fermentation of cattle manure with the addition of organate, starch, flour, whey, wastewater from wineries, crude glycerin, fusa , soap stock and melody bard. With the rational addition of the indicated cosubstrates to the digester with the help of special dispensers, as the research results show, the biogas yield increases to 1.4 l/h‧ kg of COP and higher. At the same time, it is not necessary to significantly increase the size of the digester, and other tanks for bio-sludge are not necessary, since the volume of feedstock in the digester will not increase, which does not require additional investment.
Key words: biogas plant, substrate, digester, cosubstrate, biogas output, cost price, payback period, economic efficiency
References
Kernasyuk, Yu.V. (2019). Potentsial vyrobnytstva biohazu v haluzi tvarynnytstva Ukrainy [Potential for biogas production in the livestock sector of Ukraine]. Food resources. 12, 202209.
Kuharets, S. M., Golub, G. A., Medvedsky, O. V., Lozovy, A. S. (2017). Napriamky vykorystannia biohazovykh ustanovok v umovakh ahrarnoho vyrobnytstva [Directions of use of biogas plants in the conditions of agricultural production]. Proceedings from І All-Ukrainian Scientific and Practical Conference «Bioenergy systems in agricultural production», Zhytomyr, 4-11.
Kernasyuk, Yu.V. (2010). Naukovo-metodolohichni pidkhody do vyznachennia sobivartosti vyrobnytstva ta ekonomichnoi efektyvnosti produktsii bioenerhetychnoi utylizatsii hnoiu [Scientific and methodological approaches to determining the cost of production and economic efficiency of bioenergy manure utilization]. Scientific papers of Kirovograd National Technical University. 17, 164171.
Doronin, A. V. (2015). Efektyvnist vyrobnytstva biohazu v silskohospodarskykh pidpryiemstvakh haluzi skotarstva Ukrainy [Efficiency of biogas production in agricultural enterprises of the cattle breeding industry of Ukraine]. Scientific Bulletin of Kherson State University. 11 (3), 5255.
Kernasyuk, Yu.V. (2010). Otsinka biohazovoho enerhetychnoho potentsialu haluzi skotarstva u silskohospodarskykh pidpryiemstvakh [Assessment of the biogas energy potential of the livestock sector in agricultural enterprises]. AgroInСom, 4-6, 4649.
Kernasyuk, Yu.V. (2013). Biohazova alternatyva rozvytku APK Ukrainy [Biogas alternative to the development of agro-industrial complex of Ukraine]. Agribusiness today. 18, 5053.
Polishchuk, V.M., Shvorov, S.A., Voitiuk, V.D., Mirоshnik, V.О. (2019). Protsesy, systemy ta obladnannia vyrobnytstva biohazu [Processes, systems and equipment for biogas production: monograph]. Kyiv: NUВіР of Ukraine, 544.
Downloads
Published
Issue
Section
License
Relationship between right holders and users shall be governed by the terms of the license Creative Commons Attribution – non-commercial – Distribution On Same Conditions 4.0 international (CC BY-NC-SA 4.0):https://creativecommons.org/licenses/by-nc-sa/4.0/deed.uk
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
