Influence of co-substrates ratios on biogas yield during distillery spent washutilization
Nowadays distillation industry is facing the problem of its own wastes disposal and recycling that are produced in large quantities. The main waste of alcohol industry is distillery spent
wash. Existing physical methods of distillery spent wash recycling are resource- and energy-consuming. Alternatively, biological methods such as aerobic and anaerobic digestion may be
applied. The advantage of anaerobic compared to the aerobic method is that besides wastewater it is possible to obtain biofuel (biogas) and high-quality fertilizer.
The main problems of anaerobic distillery spent wash recycling is imbalance and deficiency of nutrients, medium acidification due to low pH values of raw material.
pH and C:N ratio correction can be conducted by addition of chemical substances; provide the process with necessary microelements – an introduction of additional food source. The alternative
method is distillery spent wash co-fermentation. In this paper, the usage of poultry manure as fermentation co-substrate is proposed. Simultaneously with distillery spent wash, production
wastewater was also treated.
The purpose of this work is determination of substrate components ratio influence on biogas yield under anaerobic grain crops distillery spent wash co-fermentation.
Determined, that for optimal methanogenesis pH values the ratio of distillery spent wash to poultry manure must be in range f 1:1 to 1:3,3. Established that under insufficient manure contents in composition (ratios of distillery spent wash/manure 1:1) will take place the medium acidification due to organic acids accumulation from lipid destruction, that are contained in large amounts in distillery spent wash, and as such lipid content rises with distillery spent wash content increase.
The increase of manure content in relation to distillery spent wash (ratio 1:3) results in a methanogenesis process inhibition due increase in ammonia ions contents, that are contained in poultry manure and produced during urea hydrolysis and protein decomposition.
Determined, that for maximal biogas production it is rational to use distillery spent wash/poultry manure ratio 1:1,7 by dry weight. Under such conditions, biogas yield rises up to 265 cm3/g of dry organic weight with a methane content of 70 ± 2%.
spent wash: Treatment technologies and potential applications. Journal
of Hazardous Materials. – 2009. – Vol. 163, № 1. – Р. 2–25.
2. Hutnan M., Hornak M., Bodík I., Hlavacka V. Anaerobic
Treatment of Wheat Stillage. Chem. Biochem. Eng. Q. –
2003. – № 17(3). – Р. 233–241.
3. Rani K., Sridevi V., Srinu Venkat Rao R., Vijay
Kumar K. Harsha N. Biological treatment of distillery waste
water – an overview. Harsha international journal of general
engineering and technology. 2013. – Vol. 2– № 4. – Р.15–24.
4. Wilkie A. C., Riedesel K. J., Owens J. M. Stillage
characterization and anaerobic treatment of ethanol stillage from
conventional and cellulosic feedstocks. Biomass and Bioenergy.
– 2000. – № 19. – Р. 63–102.
5. Tomczak-Wandzel R., Górniaczyk J., Mędrzycka K.
Anaerobic treatment of distillery wastewater [Електронний
ресурс] Режим доступу: http://www.wis.pk.edu.pl/media/file/
6. Janke L., Leite A. F., Batista K., Silva W., Nikolausz
M., Nelles M., Stinnera W. Enhancing biogas production from
vinasse in sugarcane biorefineries: Effects of urea and trace elements
supplementation on process performance and stability.
[Електронний ресурс] Bioresource Technology. 2016. Режим
доступу до журн.:
7. Syaichurrozi I., Budiyono V., Sumardiono S. Predicting
kinetic model of biogas production and biodegradability
organic materials: Biogas production from vinasse at variation of
COD/N ratio. Bioresource Technology. – 2013. – № 149. – Р.
8. Prakash N. B., Sockan V., Sitarama Raju V. Anaerobic
Digestion of Distillery Spent Wash. Journal of Science and
Technology. – 2014. – Vol. 4. – № 3. – Р. 134–140.
9. Silva C. E., Abud A. K. Anaerobic biodigestion of
sugarcane vinasse under mesophilic conditions using manure as
inoculum [Електронний ресурс]. SciELO. 2016. Режим до-
10. Moraes B.S., Triolo J.M., Lecona V.P., Zaiat M.,
Sommer S.G. Biogas production within the bioethanol
production chain: use of co-substrates for anaerobic digestion of
sugar beet vinasse. Bioresource Technology. – 2015. – Vol. 190.
– P. 227–234.
11. Westerholma M., Hansson M., Schnürer A. Improved
biogas production from whole stillage by co-digestion with cattle
manure. Bioresource Technology. – 2012. – № 114. – Р. 314–319.
12. Khyzhnyak NI, NI Tson Alcohol bard-like prices for
feed additive and organic fertilizer in agriculture. Ukraine fisheries
science. - 2010. - № 2. - P. 122-130.
13. Ghaly A.E, MacDonald K.N. Drying of poultry manure for
use as animal feed. American Journal of Agricultural and Biological
Sciences. – 2012. – № 7 (3). – Р. 239–254.
14. Lurie YY Analytycheskaya Chemistry proyzvodst-vennыh
stochnыh water. Moscow: Chemistry. 1984. - 448 p.
15. GOST 26713-85. Orhanycheskye udobrenyya. Purpose-wild
for determining moisture and dry remnant. Hosudarstvennыe
standartы Union SSR. Moscow. 1986. - 3 p.
16. GOST 26714-85. Orhanycheskye udobrenyya. The aim of
wild-zolы definitions. Hosudarstvennыe standartы Union SSR.
Moscow. 1986 - 2 seconds.
17. Chromatograph Laboratory LHM-8MD: tehnyches Coedescription,
the Instructions for operation. Opytnyi plant
"Chromatograph". Moscow. 1992. - 50 p.
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