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Position: Home > Articles > Study on Anaerobic Digestion of Eichhornia crassipes in a New Way Journal of Anhui Agricultural Sciences 2013,41 (9) 4005-4007,4025

水葫芦沼气利用新工艺研究

作  者:
张映兰;赵兴玲;尹芳;张无敌;许玲;柳静;陈玉保;刘士清
单  位:
云南师范大学
关键词:
水葫芦;批量发酵;干发酵;综合利用
摘  要:
[目的]研究水葫芦沼气利用的新工艺。[方法]水葫芦经固液分离后,设计水葫芦渣批量干发酵以及水葫芦汁常温、中温批量发酵等系列厌氧消化试验。[结果]水葫芦渣可以进行干发酵,TS=20%的原料产气率为385 ml/g TS,明显高于TS=25%(343 ml/g TS)和30%(288 ml/g TS)的原料产气率;水葫芦汁常温批量发酵的产气潜力为2.2 ml/g,COD的降解率高达91.27%,COD产气值为332 ml/gCOD,发酵时间为32 d;水葫芦汁恒温批量发酵的COD降解率为86.43%,COD产气值为312 ml/g COD,发酵时间为25 d。[结论]水葫芦沼气利用的新工艺可有效避免直接发酵导致的问题。
译  名:
Study on Anaerobic Digestion of Eichhornia crassipes in a New Way
作  者:
ZHANG Ying-lan et al(Yunnan Normal University,Kunming,Yunnan 650092)
关键词:
Eichhornia crassipes;Bach fermentation;Dry fermentation;Comprehensive utilization
摘  要:
[Objective] The study aimed to discuss the anaerobic digestion of Eichhornia crassipes in a new way.[Method] After solid-liquid separation of E.crassipes,a series of experiments on anaerobic digestion by batch were conducted,such as dry fermentation of the residue,fermentation of the juice at moderate and normal temperatures.[Result] Dry fermentation of the residue is practicable,the biogas production rate of total solids(TS) was up to 385 ml/g when TS content was 20%,which was significantly higher than those when TS content was 25%(343 ml/g TS) and 30%(288 ml/g TS) respectively.In addition,after 32 days of juice fermentation at normal temperatures,the potential of biogas production was 2.2 mg/L with 91.27% of chemical oxygen demand(COD) degraded,and the biogas yield of COD equaled 332 ml/g COD.Comparatively,after 25 days of juice fermentation at moderate temperatures,the biogas yield of COD was 312 ml/g COD with 86.43% of COD degraded.[Conclusion] The anaerobic digestion of water hyacinth in the new way can solve traditional problems of direct fermentation.

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