在光暗发酵条件下猪粪和牛粪的厌氧消化。
Anaerobic digestion of pig and dairy manure under photo-dark fermentation condition.
机构信息
College of Forestry, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Research Center for Recycling Agricultural Engineering Technology of Shaanxi Province, Yangling, Shaanxi Province 712100, China.
Research Center for Recycling Agricultural Engineering Technology of Shaanxi Province, Yangling, Shaanxi Province 712100, China; College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
出版信息
Bioresour Technol. 2014 Aug;166:373-80. doi: 10.1016/j.biortech.2014.05.037. Epub 2014 May 20.
Anaerobic digestion (AD) with livestock manure is a promising way for biogas production. This work presents the influence of photo-dark fermentation on biogas production of pig manure (PM) and dairy manure (DM). All sets were conducted with temperature 35 ± 2 °C and total solid concentrations 8%: PM₁ and DM₁ in transparent reactor under sunlight for photo-dark fermentation, and PM₂ and DM₂ in non-transparent reactor for dark fermentation. DM₂ had the best cumulative biogas production (CBP) of 15,447.5 mL, followed by PM₁ (15,020 mL) with stable pH and low total ammonium nitrogen (TAN) concentration (1384.99 mg/L), and DM₁ and PM₂. The CBP of DM₂ was 5.77 times as much as PM₂. The relationship between CBP and four factors including volatile fatty acid (VFA), TAN, total alkalinity and pH was analyzed. pH gained the maximum determination coefficient with the CBP among all sets and total alkalinity showed negative correlation with CBP of PM₁ and DM₁.
厌氧消化（AD）与牲畜粪便相结合是沼气生产的一种很有前途的方法。本工作研究了光暗发酵对猪粪（PM）和奶牛粪（DM）沼气生产的影响。所有实验均在 35±2°C 和总固体浓度为 8%的条件下进行：PM₁和 DM₁在透明反应器中在阳光下进行光暗发酵，PM₂和 DM₂在不透明反应器中进行暗发酵。DM₂的累积沼气产量（CBP）最高，为 15447.5 毫升，其次是 PM₁（15020 毫升），其 pH 值稳定，总氨氮（TAN）浓度低（1384.99 毫克/升），DM₁和 PM₂也是如此。DM₂的 CBP 是 PM₂的 5.77 倍。分析了 CBP 与包括挥发性脂肪酸（VFA）、TAN、总碱度和 pH 值在内的四个因素之间的关系。在所有实验中，pH 值与 CBP 的相关性最大，而总碱度与 PM₁ 和 DM₁ 的 CBP 呈负相关。
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