Nitrogen cycle of effluent-irrigated energy crop plantations: From wastewater treatment to thermo-chemical conversion processes

作者：Mayer Z A^*; Apfelbacher A; Hornung A

来源：Journal of Scientific & Industrial Research, 2011, 70(8): 675-682.

• Carbon and nitrogen sequestration
• Intermediate pyrolysis
• Nitrogen cycle
• Nitrogen fixation
• NOx emission
• Vegetative filters
• Wastewater treatment

This paper reviews nitrogen (N) cycle of effluent-irrigated energy crop plantations, starting from wastewater treatment to thermo-chemical conversion processes. In wastewater, N compounds contribute to eutrophication and toxicity in water cycle. Removal of N via vegetative filters and specifically in short-rotation energy plantations, is a relatively new approach to managing nitrogenous effluents. Though combustion of energy crops is in principle carbon neutral, in practice, N content may contribute to NOx emissions with significant global warming potential. Intermediate pyrolysis produces advanced fuels while reducing such emissions. By operating at intermediate temperature (500 degrees C), it retains most N in char as pyrrolic-N, pyridinic-N, quaternary-N and amines. In addition, biochar provides long-term sequestration of carbon in soils.

• 出版日期2011-8