生物质与废弃油脂协同发酵的最佳条件探究

Study on Optimal Conditions for Synergistic Fermentation of Biomass and Waste Oil

利用廉价高效的生物质材料（水葫芦、柚子皮、玉米秸秆、甘蔗渣）和餐饮废弃油脂协同发酵，考察生物质粒径、发酵温度、废弃油脂投加量对协同发酵效果的影响。结果表明：当生物质粒径为1～5cm、发酵温度为35～45℃、废弃油脂：生物质（质量比）为1：8时，发酵产气效果较好。4种生物质的产气量及产气潜力排序为柚子皮〉水葫芦〉玉米秸秆〉甘蔗渣。

With four types of cheap and efficient biomass materials （water hyacinth, grapefruit skin, corn stover and bagasse） and waste oil used, the effects of the following aspects on synergistic fer- mentation were investigated ： particle size of biomass, fermentation temperature and waste oil dosage. The results showed that when using biomass with particle size of 1 to 5 cm, fermentation temperature of 35 to 45 ℃ and waste oil/biomass ratio of1 ： 8, a good performance in fermentation for biogas production was achieved. The order of biogas production and potential of these four types of biomass materials was grape- fruit skin 〉 water hyacinth 〉 corn stover 〉 bagasse.