Title:
Biomethane Yield from Energy Plants in Latvia
Author(s):
Adamovičs, A., Dubrovskis, V., Plume, I.
Document(s):
Paper
Abstract:
Introduction of new energy plants for biogas production is necessary for Latvia in renewable energy development. Investigations were provided on sunflower, hemp and sorghum to evaluate its suitability for biomethane production in Latvia. Sunflower (Helianthus annuus L.) is used for decades for fodder production. Hemp (Cannabis sativa subsp. sativa) is variety allowed by legislation and was sown on 59 ha in Latvia in 2006. Two varieties were used (local hemp ‘PuriHi’ and Polish variety ‘Bialobrzeskie’) in trial. Investigated dry matter (DM) yield was 8-11 t.ha-1 and 8.3-14.2 t.ha-1 for sunflower or hemp respectively. Sorghum-sudangrass hybrid (Sorghum bicolor Moench × Sorghum sudanense [Piper] Stapf.) is the newly introduced energy plant in Latvia and obtained DM yields are in range 8.7-11.1 t.ha-1.Biomethane yield from fresh biomass was investigated in 6 laboratory digesters at constant temperature 38oC. Methane yield was 302±6 l.kgVOS-1, 297±9 l.kgVOS-1 and 294±2 l.kgVOS-1 from sorghum, sunflower and hemp respectively. Investigated average methane content in biogas was 56.7%, 58.3% and 3 -1 55.2% for sorghum, sunflower and hemp respectively. Potential biomethane yield from unit of area is 3113 Nm ha 3-1 3-1 for hemp, 2627 Nm ha for sunflower and 2812 Nm ha for sorghum in agroecological conditions of Latvia.
Keywords:
energy crops, hemp, methane, sunflower, Sorghum bicolor
Topic:
Biomass resources
Subtopic:
Research on energy crops (session 3)
Event:
18th European Biomass Conference and Exhibition
Session:
VP1.3.31
Pages:
484 - 486
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP1.3.31
Price:
FREE
