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时间:2020-03-25
《杨树叶与猪粪混合发酵产沼气研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、南方农业学报JournalofSouthernAgriculture2016。47(5):705—709ISSN2095一l19l:CODENNNXAABhttp://www.nfnyxh.comDOI:10.39690:issn.2095-1191.2016.05.705杨树叶与猪粪混合发酵产沼气研究李安华,刘彦珍,王建设,刘华(安阳工学院生物与食品工程学院.河南安阳455000)摘要:【目的】探讨杨树叶与猪粪混合发酵生产沼气的效果,为落叶资源循环利用提供新途径。【方法】将杨树叶堆沤后,与猪粪按照不同比例(1:
2、0、2:l、l:l、l:2、0:1)混合,于35℃下发酵,分析不同原料配比对沼气产量、所产沼气中甲烷含量及沼液pH的影响,并对初始pH进行优化。【结果】纯杨树叶发酵的总产气量和总固体(Ts)产气率较低;添加猪粪混合发酵后,总产气量和Ts产气率随猪粪添加量的增加而大幅提高,其中以叶粪比l:2最高,总产气量和Ts产气率分别为7338mL和262mL/g,且比纯猪粪发酵的TS产气率提高了lO.1%,沼气中甲烷含量略高,发酵至第7d超过50.o%,发酵pH较稳定。初始PH设为7.50~8.00最适合沼气产生。【结论】杨树
3、叶不宜作为单独原料进行发酵,以l:2比例混合猪粪进行发酵产沼气的效率最高,且可提高杨树叶的利用率。关键词:杨树叶;猪粪;沼气;混合发酵;厌氧发酵中图分类号:$216.4文献标志码:A文章编号:2095一1191(2016)05—0705—05一‘’‘‘。一‘‘n。Biol三asDroductiOnbyco-termentat
4、onOlOoolarleavesandswinefecesUAn—hua,LIUYan—zhen,WANGJian—she,LIUHua(CollegeBioteehnologyandFoo
5、dEngineering,AnyangInstituteofTechnology,Anyang,Henan455000,China)Abstract:【Objective]Thepresentexperimentwasconductedtoinvestigateco—fermentationofpoplarleavesmixedandswinefecestoproducebiogas,inordertoprovideanewwayforcyclicutilizationoffallenleaves.IMethod
6、]Thecompostedpoplarleavesweremixedwithswinefecesindifferentproportions(1:O,2:1,1:l,l:2,0:1),thenwerefermentedunder35℃.Effectsofdifferentrawmaterialratiosonbiogasyield.methanecontentandpHofbiogasslurrywereanalyzed,theinitialpHwasalsooptimized.【Result]Theresult
7、sshowedthat,whenfermentingpoplarleaves,theto-talbiogasyieldandtotalsolid(TS)biogasproductionratewerelower.Aftermixingpoplarleaveswithswinefeces,totalbiogasyieldand"ISbiogasproductionrateweresignificantlyincreasedwithincreaseofswinefeces,especiallywhenratioofp
8、oplarleavestoswinefeceswas1:2,thetotalbiogasyieldandTSbiogasproductionratewereallthehighest,whichwere7338mLand262m魄,respectively,andthe"ISbiogasproductionrateWasincreasedby10.1%comparedwiththatoffer-mentingpureswinefeces.Atthefightratio,themethanecontentinbio
9、gasWasslighdyhigher.Themethanecontentinbio—gasWasmorethan50%on7“dayoffermentation.ThepHoffermentationliquorWasrelativelystable.TheoptimuminitialpHrangedfrom7.50to8.00.【Conclusion]Thepopla
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