Title:
Anaerobic Digestion of Hemp, Sunflower Silage And Amaranth Silage with Catalyst Metaferm
Author(s):
Dubrovskis, V., Adamovics, A.
Document(s):
Paper
Poster
Abstract:
54 biogas plants are working today in Latvia. There is need to investigate the suitability of various biomasses for energy production. Maize is the dominating crop for biogas production in Latvia. The cultivation of more varied crops with good economics and low environmental impact is thus desirable. One of the highest biomass yield in Latvia conditions is giving hemp. A general observation in hemp cultivation is that weeds are suppressed when the hemp is well established; making herbicides unnecessary. This paper shows results from anaerobic digestion of industrial hemp (Cannabis sativaL.) USO 31 and, as substitutes of maize silage , sunflowers (Helianthus cultus L.) silage and amaranth (Amaranth L.) silage. The digestion process was investigated for biogas production in sixteen 0,7l digesters, operated in batch mode at temperature 38±1.0°C. The average methane yield per unit of dry organic matter added (DOM) from digestion of thin USO 31 was 0,237l·gDOM -1 and average methane content was 53,42%. Average methane yield from digestion of only chopped leaves USO 31 was 0,362 l·gDOM -1 and average methane content was 58,75%. The average methane yield per unit of dry organic matter added from digestion of -1-1 -1 sunflowers silage was 0,267l·gDOM with Metaferm1ml-0,307 l·gDOM and with Metaferm 2ml-0,434 l·gDOM . The average methane yield per unit of dry organic matter added from digestion of amaranths silage was 0,403l·gDOM -1 , -1 -1 with Metaferm1ml-0,434l·gDOM and with Metaferm 2ml-0,484 l·gDOM . All investigated plants can be successfully cultivated for energy production under agro ecological conditions in Latvia, but for biogas production better usable leaves as whole plant of hemp. Addition of catalyst Metaferm increased methane yield 15,11%-20,09%.
Keywords:
anaerobic digestion, biogas, energy crops, hemp, methane, sunflower silage, amaranth silage
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas production
Event:
23rd European Biomass Conference and Exhibition
Session:
2DV.1.45
Pages:
845 - 850
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2DV.1.45
Price:
FREE
