Integrated Ammonia Recovery Technology in Conjunction with Dairy Anaerobic Digestion
نویسندگان
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.
منابع مشابه
Anaerobic digestion of dairy manure with enhanced ammonia removal.
Poor ammonia-nitrogen removal in methanogenic anaerobic reactors digesting animal manure has been reported as an important disadvantage of anaerobic digestion (AD) in several studies. Development of anaerobic processes that are capable of producing reduced ammonia-nitrogen levels in their effluent is one of the areas where further research must be pursued if AD technology is to be made more eff...
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