Integrated Ammonia Recovery Technology in Conjunction with Dairy Anaerobic Digestion

نویسندگان

  • A. Jiang
  • T. Zhang
چکیده

With approximately 696 million tons of animal manure produced yearly in the United States, and 46% of that being generated on concentrated animal feeding operations (CAFOs) (Ribaudo et al., 2003), animal waste management is becoming an important environmental concern. It causes air and water quality concerns and climate impacts. In addition, many CAFOs generate more waste than can be disposed of without causing localized nutrient buildup. Although anaerobic digestion (AD) has been widely used in animal manure management for methane entrapment, reduction of volatile organics, solids reduction, chemical oxygen demand, vector reduction and pathogen removal, it does not reduce or recover nutrients. In fact, AD can make ammonia emissions even more problematic as it partially converts organic nitrogen to the ammonia form.

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تاریخ انتشار 2010