Aqueous Ammonia soaking of digested manure fibers: Effect of ammonia concentration and treatment duration on methane production

Chrysoula Mirtsou-Xanthopoulou, Esperanza Jurado, Ioannis Skiadas, Hariklia N. Gavala

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

The continuously increasing demand for renewable energy sources renders anaerobic
digestion to one of the most promising technologies for renewable energy production. Due to
the animal production intensification, manure is being used as the primary feedstock for most
of the biogas plants. Thus, their economical profitable operation relies on increasing the
methane yield from manure, and especially of its solid fraction which is not so easily
degradable. In the present study, Aqueous Ammonia Soaking was successfully applied on
digested fibers separated from the effluent of a manure-fed, full-scale anaerobic digester to
enhance their methane productivity. Soaking in six different reagent concentrations in
ammonia (5%, 10%, 15%, 20%, 25%, 32%) was applied for 3 days at 22°C. An overall
methane yield increase from 85% to 110% was achieved compared to controls (digested
manure fibers where AAS was not applied). The difference in reagent concentration at the
range of 5-25% w/w in ammonia did not affect that much the overall methane yield resulting
to an increase of 104-110% compared to the non AAS-treated fibers. Thus, an ammonia
concentration as low as 5% is adequate for achieving the same increase in methane yield as
the highest concentrations tested; it is anticipated that this will result to an even lower cost for
recovery and recycling of ammonia in full-scale. Moreover, the effect of 1, 3, and 5 days AAS
treatment on methane production from digested fibers was investigated with 5 and 25% w/w
reagent concentrations in ammonia. It was shown that the optimal duration among the ones
tested was the three days for both reagent concentrations.
Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13
Number of pages6
Volume1
PublisherWasteEng Conference Series, Mines d’Albi, France
Publication date2012
Pages282-287
ISBN (Electronic)979-10-91526-00-5
Publication statusPublished - 2012
Event4th International Conference on Engineering for Waste and Biomass Valorisation - Porto, Portugal
Duration: 10 Sep 201213 Sep 2012
Conference number: 4

Conference

Conference4th International Conference on Engineering for Waste and Biomass Valorisation
Number4
CountryPortugal
CityPorto
Period10/09/201213/09/2012

Fingerprint

methane production
soaking
animal manures
ammonia
methane
duration
renewable energy sources
water
anaerobic digesters
biogas
animal production
feedstocks
recycling
effluents

Keywords

  • anaerobic digestion, aqueous ammonia soaking, manure fibers, methane potential

Cite this

Mirtsou-Xanthopoulou, C., Jurado, E., Skiadas, I., & Gavala, H. N. (2012). Aqueous Ammonia soaking of digested manure fibers: Effect of ammonia concentration and treatment duration on methane production. In Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13 (Vol. 1, pp. 282-287). WasteEng Conference Series, Mines d’Albi, France.
Mirtsou-Xanthopoulou, Chrysoula ; Jurado, Esperanza ; Skiadas, Ioannis ; Gavala, Hariklia N. / Aqueous Ammonia soaking of digested manure fibers : Effect of ammonia concentration and treatment duration on methane production. Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13. Vol. 1 WasteEng Conference Series, Mines d’Albi, France, 2012. pp. 282-287
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Mirtsou-Xanthopoulou, C, Jurado, E, Skiadas, I & Gavala, HN 2012, Aqueous Ammonia soaking of digested manure fibers: Effect of ammonia concentration and treatment duration on methane production. in Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13. vol. 1, WasteEng Conference Series, Mines d’Albi, France, pp. 282-287, 4th International Conference on Engineering for Waste and Biomass Valorisation , Porto, Portugal, 10/09/2012.

Aqueous Ammonia soaking of digested manure fibers : Effect of ammonia concentration and treatment duration on methane production. / Mirtsou-Xanthopoulou, Chrysoula ; Jurado, Esperanza; Skiadas, Ioannis; Gavala, Hariklia N.

Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13. Vol. 1 WasteEng Conference Series, Mines d’Albi, France, 2012. p. 282-287.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

TY - GEN

T1 - Aqueous Ammonia soaking of digested manure fibers

T2 - Effect of ammonia concentration and treatment duration on methane production

AU - Mirtsou-Xanthopoulou, Chrysoula

AU - Jurado, Esperanza

AU - Skiadas, Ioannis

AU - Gavala, Hariklia N.

PY - 2012

Y1 - 2012

N2 - The continuously increasing demand for renewable energy sources renders anaerobic digestion to one of the most promising technologies for renewable energy production. Due to the animal production intensification, manure is being used as the primary feedstock for most of the biogas plants. Thus, their economical profitable operation relies on increasing the methane yield from manure, and especially of its solid fraction which is not so easily degradable. In the present study, Aqueous Ammonia Soaking was successfully applied on digested fibers separated from the effluent of a manure-fed, full-scale anaerobic digester to enhance their methane productivity. Soaking in six different reagent concentrations in ammonia (5%, 10%, 15%, 20%, 25%, 32%) was applied for 3 days at 22°C. An overall methane yield increase from 85% to 110% was achieved compared to controls (digested manure fibers where AAS was not applied). The difference in reagent concentration at the range of 5-25% w/w in ammonia did not affect that much the overall methane yield resulting to an increase of 104-110% compared to the non AAS-treated fibers. Thus, an ammonia concentration as low as 5% is adequate for achieving the same increase in methane yield as the highest concentrations tested; it is anticipated that this will result to an even lower cost for recovery and recycling of ammonia in full-scale. Moreover, the effect of 1, 3, and 5 days AAS treatment on methane production from digested fibers was investigated with 5 and 25% w/w reagent concentrations in ammonia. It was shown that the optimal duration among the ones tested was the three days for both reagent concentrations.

AB - The continuously increasing demand for renewable energy sources renders anaerobic digestion to one of the most promising technologies for renewable energy production. Due to the animal production intensification, manure is being used as the primary feedstock for most of the biogas plants. Thus, their economical profitable operation relies on increasing the methane yield from manure, and especially of its solid fraction which is not so easily degradable. In the present study, Aqueous Ammonia Soaking was successfully applied on digested fibers separated from the effluent of a manure-fed, full-scale anaerobic digester to enhance their methane productivity. Soaking in six different reagent concentrations in ammonia (5%, 10%, 15%, 20%, 25%, 32%) was applied for 3 days at 22°C. An overall methane yield increase from 85% to 110% was achieved compared to controls (digested manure fibers where AAS was not applied). The difference in reagent concentration at the range of 5-25% w/w in ammonia did not affect that much the overall methane yield resulting to an increase of 104-110% compared to the non AAS-treated fibers. Thus, an ammonia concentration as low as 5% is adequate for achieving the same increase in methane yield as the highest concentrations tested; it is anticipated that this will result to an even lower cost for recovery and recycling of ammonia in full-scale. Moreover, the effect of 1, 3, and 5 days AAS treatment on methane production from digested fibers was investigated with 5 and 25% w/w reagent concentrations in ammonia. It was shown that the optimal duration among the ones tested was the three days for both reagent concentrations.

KW - anaerobic digestion, aqueous ammonia soaking, manure fibers, methane potential

M3 - Article in proceeding

VL - 1

SP - 282

EP - 287

BT - Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13

PB - WasteEng Conference Series, Mines d’Albi, France

ER -

Mirtsou-Xanthopoulou C, Jurado E, Skiadas I, Gavala HN. Aqueous Ammonia soaking of digested manure fibers: Effect of ammonia concentration and treatment duration on methane production. In Proceedings of the 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12), Porto (Portugal), September 10-13. Vol. 1. WasteEng Conference Series, Mines d’Albi, France. 2012. p. 282-287