Tampere University of Technology

TUTCRIS Research Portal

Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions

Research output: Contribution to journalArticleScientificpeer-review

Standard

Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions. / Seppälä, M.; Paavola, T.; Lehtomäki, A.; Pakarinen, O.; Rintala, J.

In: Water Science and Technology, Vol. 58, No. 9, 2008, p. 1857-1863.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Seppälä, M, Paavola, T, Lehtomäki, A, Pakarinen, O & Rintala, J 2008, 'Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions', Water Science and Technology, vol. 58, no. 9, pp. 1857-1863. https://doi.org/10.2166/wst.2008.503

APA

Seppälä, M., Paavola, T., Lehtomäki, A., Pakarinen, O., & Rintala, J. (2008). Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions. Water Science and Technology, 58(9), 1857-1863. https://doi.org/10.2166/wst.2008.503

Vancouver

Author

Seppälä, M. ; Paavola, T. ; Lehtomäki, A. ; Pakarinen, O. ; Rintala, J. / Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions. In: Water Science and Technology. 2008 ; Vol. 58, No. 9. pp. 1857-1863.

Bibtex - Download

@article{a91e475cee8c4a8baddb64577f1883a7,
title = "Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions",
abstract = "The objective of this research was to evaluate the biogas production from crops in boreal conditions, focusing on the optimal pre-treatment and storage methods, co-digestion and energy balance of farm-scale crop based biogas plants. Alkaline treatments offered some potential for improving the methane yield from grass and sugar beet tops. The results show that the CH4 yield of energy crops can be maintained by appropriate ensiling conditions for even after 11 months in ambient conditions. The CH4 yield was best preserved with wet grass mixture without additives. Co-digestion of manure and crops was shown to be feasible with feedstock volatile solids (VS) containing up to 40{\%} of crops. The highest specific methane yields of 268, 229 and 213ICH 4kg-1 VSadded in co-digestion of cow manure with grass, sugar beet tops and straw, respectively, were obtained during feeding with 30{\%} of crop in the feedstock, corresponding to 85-105{\%} of the total methane potential in the substrates as determined by batch assays. The energy output:input ratio of farm-scale grass silage based biogas plant varied significantly (3.5-8.2) with different assumptions and system boundaries being lowest when using only inorganic fertilizers and highest when half of the heat demand of the system could be covered by metabolic heat.",
keywords = "Co-digestion, Energy balance, Energy crops, Methane production, Pre-treatment, Storage",
author = "M. Sepp{\"a}l{\"a} and T. Paavola and A. Lehtom{\"a}ki and O. Pakarinen and J. Rintala",
year = "2008",
doi = "10.2166/wst.2008.503",
language = "English",
volume = "58",
pages = "1857--1863",
journal = "Water Science and Technology",
issn = "0273-1223",
publisher = "IWA Publishing",
number = "9",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Biogas from energy crops - Optimal pre-treatments and storage, co-digestion and energy balance in boreal conditions

AU - Seppälä, M.

AU - Paavola, T.

AU - Lehtomäki, A.

AU - Pakarinen, O.

AU - Rintala, J.

PY - 2008

Y1 - 2008

N2 - The objective of this research was to evaluate the biogas production from crops in boreal conditions, focusing on the optimal pre-treatment and storage methods, co-digestion and energy balance of farm-scale crop based biogas plants. Alkaline treatments offered some potential for improving the methane yield from grass and sugar beet tops. The results show that the CH4 yield of energy crops can be maintained by appropriate ensiling conditions for even after 11 months in ambient conditions. The CH4 yield was best preserved with wet grass mixture without additives. Co-digestion of manure and crops was shown to be feasible with feedstock volatile solids (VS) containing up to 40% of crops. The highest specific methane yields of 268, 229 and 213ICH 4kg-1 VSadded in co-digestion of cow manure with grass, sugar beet tops and straw, respectively, were obtained during feeding with 30% of crop in the feedstock, corresponding to 85-105% of the total methane potential in the substrates as determined by batch assays. The energy output:input ratio of farm-scale grass silage based biogas plant varied significantly (3.5-8.2) with different assumptions and system boundaries being lowest when using only inorganic fertilizers and highest when half of the heat demand of the system could be covered by metabolic heat.

AB - The objective of this research was to evaluate the biogas production from crops in boreal conditions, focusing on the optimal pre-treatment and storage methods, co-digestion and energy balance of farm-scale crop based biogas plants. Alkaline treatments offered some potential for improving the methane yield from grass and sugar beet tops. The results show that the CH4 yield of energy crops can be maintained by appropriate ensiling conditions for even after 11 months in ambient conditions. The CH4 yield was best preserved with wet grass mixture without additives. Co-digestion of manure and crops was shown to be feasible with feedstock volatile solids (VS) containing up to 40% of crops. The highest specific methane yields of 268, 229 and 213ICH 4kg-1 VSadded in co-digestion of cow manure with grass, sugar beet tops and straw, respectively, were obtained during feeding with 30% of crop in the feedstock, corresponding to 85-105% of the total methane potential in the substrates as determined by batch assays. The energy output:input ratio of farm-scale grass silage based biogas plant varied significantly (3.5-8.2) with different assumptions and system boundaries being lowest when using only inorganic fertilizers and highest when half of the heat demand of the system could be covered by metabolic heat.

KW - Co-digestion

KW - Energy balance

KW - Energy crops

KW - Methane production

KW - Pre-treatment

KW - Storage

U2 - 10.2166/wst.2008.503

DO - 10.2166/wst.2008.503

M3 - Article

VL - 58

SP - 1857

EP - 1863

JO - Water Science and Technology

JF - Water Science and Technology

SN - 0273-1223

IS - 9

ER -