Methane production from horse manure and stall waste with softwood bedding

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• 作者：Brian A. Wartell ; Valdis Krumins ; Jeffrey Alt ; Kathleen Kang ; Bryan J. Schwab ; Donna E. Fennell ; ^{fennell@envsci.rutgers.edu}
• 关键词：Stall waste ; Horse manure ; Softwood bedding ; Anaerobic digestion ; Methane potential
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：May, 2012
• 卷：112
• 期：Complete
• 页码：42-50
• 文件大小：462 K

摘要

Substantial stall waste is generated from horses on softwood bedding. The methane potential (G_pot) of horse manure and constructed mixtures of stall waste with softwood bedding was determined at 35 掳C. G_pot of 68, 191 and 273 mL/g volatile solids (VS) were estimated for three separate batches of horse manure, indicating variability in the material. Cumulative energy production over 20-40 days ranged from 3.11 卤 0.92 to 8.45 卤 5.42 脳 10⁵ kJ/metric ton wet weight horse manure alone, and from 1.69 卤 0.39 to 3.91 卤 0.47 脳 10⁵ kJ/metric ton wet weight horse manure plus softwood stall bedding (mixed at a 1:1 ratio on a VS basis). Softwood bedding was barely degradable and diluted the energy production of the stall waste; however, it did not cause inhibition of methane production from manure. Manually separated used softwood bedding contained substantial methane potential.