Anaerobic digestion of spring and winter wheat: Comparison of net energy yields

作者：Rincon Barbara^*; Heaven Sonia; Salter Andrew M; Banks Charles J

来源：Journal of Environmental Science and Health - Part A: Toxic/Hazardous Substances & Environmental Engineering , 2016, 51(12): 1084-1089.

DOI：10.1080/10934529.2016.1198634

• Anaerobic processes
• biodegradation
• energy crop
• environmental preservation
• renewable energy production

Anaerobic digestion of wheat was investigated under batch conditions. The article compares the potential net energy yield between a winter wheat (sown in the autumn) and a spring wheat (sown in the spring) grown in the same year and harvested at the same growth stage in the same farm. The spring wheat had a slightly higher biochemical methane potential and required lower energy inputs in cultivation, but produced a lower dry biomass yield per hectare, which resulted in winter wheat providing the best overall net energy yield. The difference was small; both varieties gave a good net energy yield. Spring sowing may also offer the opportunity for growing an additional over-winter catch crop for spring harvest, thus increasing the overall biomass yield per hectare, with both crops being potential digester feedstocks.

• 出版日期2016