Anaerobic digestion of high-yielding tropical energy crops for biomethane production: Effects of crop types, locations and plant parts
| Autor: | Andrew G. Hashimoto, Annett Reinhardt-Hanisch, Samir Kumar Khanal, Hans Oechsner, K.C. Surendra, Richard Ogoshi, Halina M. Zaleski |
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| Rok vydání: | 2018 |
| Předmět: |
Crops
Agricultural Environmental Engineering 020209 energy Biomass Bioengineering 02 engineering and technology 010501 environmental sciences Biology 01 natural sciences Lignin Zea mays Crop chemistry.chemical_compound Biogas Bioenergy 0202 electrical engineering electronic engineering information engineering Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment food and beverages General Medicine Biorefinery Energy crop Anaerobic digestion Agronomy chemistry Biofuels Methane |
| Zdroj: | Bioresource technology. 262 |
| ISSN: | 1873-2976 |
| Popis: | This study examined the composition and anaerobic digestibility of the different plant parts of two high-yielding tropical energy crops, Energycane and Napier grass, collected across three locations and two seasons. Both biomass composition and biomethane yields varied significantly with crop types, plant parts and harvest seasons. In Energycane, specific methane yield (SMY) (Nm3 (kg VSadded)−1) was higher from stems (0.232 ± 0.003) than leaves (0.224 ± 0.003), while in Napier grass, SMY was higher from leaves (0.243 ± 0.002) than stems (0.168 ± 0.002). Energycane had higher specific and total (Nm3 ha−1 year−1) methane yields (0.230 ± 0.002 and 8749 ± 494, respectively) than Napier grass (0.192 ± 0.002 and 5575 ± 494, respectively). The SMYs from biomass correlated negatively with acid detergent fiber, cellulose and lignin content in the biomass. Energycane and Napier grass had lower specific but comparable total methane yields (TMYs) with maize. The ecological, economic and environmental merits associated with perennial crops suggest they could outperform maize as a substrate for bioenergy production. |
| Databáze: | OpenAIRE |
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