文章摘要
李丹妮,张克强,梁军锋,高文萱,孔德望,杜连柱.三种添加剂对猪粪厌氧干发酵的影响[J].农业环境科学学报,2019,38(8):1777-1785.
三种添加剂对猪粪厌氧干发酵的影响
Solid-state anaerobic digestion of pig manure with three kinds of additives
投稿时间:2019-05-27  
DOI:10.11654/jaes.2019-0587
中文关键词: 厌氧干发酵  产气率  猪粪  添加剂  酸抑制
英文关键词: solid-state anaerobic digestion  biogas production  pig manure  additives  acid inhibition
基金项目:国家重点研发计划项目(2017YFD0800801);天津市自然科学基金面上项目(16JCYBJC29600);中国农业科学院协同创新任务(CAASXTCX2016015)
作者单位E-mail
李丹妮 农业农村部环境保护科研监测所, 天津 300191  
张克强 农业农村部环境保护科研监测所, 天津 300191  
梁军锋 农业农村部环境保护科研监测所, 天津 300191  
高文萱 农业农村部环境保护科研监测所, 天津 300191  
孔德望 杭州能源环境工程有限公司, 杭州 310020  
杜连柱 农业农村部环境保护科研监测所, 天津 300191 dulianzhu99@163.com 
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中文摘要:
      为避免猪粪厌氧干发酵酸抑制,提高产气效率,以猪粪为主要发酵原料,研究中温(37℃)条件下不同添加剂(蛭石、海泡石和生物炭)及添加量(添加比例为5%、10%、15%和20%)对厌氧干发酵(总固体为20%)的产酸及产气性能的影响。结果表明:加入添加剂的发酵体系中,总有机酸(TVFAs)质量浓度随蛭石和生物炭添加比例的增加而降低,第25 d后TVFAs质量浓度迅速降低,相比生物炭和蛭石,海泡石的不同添加比例差异不显著。与猪粪单独发酵相比,不同生物炭(P-C)添加比例下迟滞期可缩短31.23%~83.90%。10%添加比例下,蛭石、海泡石和生物炭使累积挥发性固体(VS)产气率分别提高了98.97%、76.78%和93.06%,当添加比例达到20%时,最大VS产甲烷速率分别为3.62、2.87 mL·g-1和3.15 mL·g-1,累积VS产甲烷量可达106.38、106.68 mL·g-1和126.23 mL·g-1。3种添加剂均能够缓解猪粪厌氧干发酵的酸抑制,提高甲烷产率,总体上生物炭效果优于蛭石和海泡石。
英文摘要:
      In order to avoid acid inhibition and improve biogas production of solid-state anaerobic digestion (SS-AD), the effect of various additives (vermiculite, sepiolite, biochar) and addition dosages (5%, 10%, 15%, 20%) on the acid concentrations and biogas yields in SSAD process was investigated under 37℃ with pig manure as substrate. The results showed that the mass concentration of TVFAs decreased with the increase of the added proportion of vermiculite and biochar, and decreased rapidly after 25th day. Compared with biochar and vermiculite, there was no significant difference in TVFAs concentrations for different proportions of added sepiolite. Compared with SS-AD of pig manure without any additive, the lag phase of different biochar (P-C) addition ratio could be shortened by 31.23% to 83.90%. At a 10% addition ratio of addivite, vermiculite, sepiolite and biochar increased the cumulative specific methane yield (SMY) rate by 98.97%, 76.78% and 93.06% respectively. When the addition ratio increased to 20%, the SMY reached at 3.62 mL·g-1, 2.87 mL·g-1 and 3.15 mL·g-1, and the cumulative SMY were 106.38 mL·g-1, 106.68 mL·g-1 and 126.23 mL·g-1 respectively. The addition of vermiculite, sepiolite and biochar could alleviate the acid inhibition and increase the methane yield in SS-AD process with pig manure as substrate, and the effect of biochar was superior to that of vermiculite and sepiolite.
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