Instituto de la Grasa (CSIC), Avda. Padre García Tejero 4, 41012 Sevilla, Spain.
Bioresour Technol. 2010 Dec;101(24):9486-92. doi: 10.1016/j.biortech.2010.07.096. Epub 2010 Jul 29.
Batch experiments to remove ammonia from food waste digestate were set up, and preliminary runs undertaken. These experiments were based on gas stripping in a heated column reactor; the effects of different temperatures (35, 55 and 70 degrees C) and gas flow rates (0.125, 0.250 and 0.375 L(biogas)L(digestate)(-1)min(-1)) were considered using biogas as the stripping gas. At 35 degrees C, an increase in the ammonia removal rate by approximately 4.5 times was observed when the flow rate increased from 0.125 to 0.375 L(biogas)L(digestate)(-1)min(-1). At 55 degrees C, and flow rates of 0.250 and 0.375 L(biogas)L(digestate)(-1)min(-1), ammonia removal of 3.46 and 9.38%day(-1), respectively, were achieved. The highest values of removal of ammonia were reached at 70 degrees C: 18.4 and 10.4%day(-1), for 0.250 and 0.375 L(biogas)L(digestate)(-1)min(-1) flow rates, respectively.
开展了批式实验以去除食物废物消化液中的氨，进行了初步运行。这些实验基于加热柱式反应器中的气体汽提；考虑了不同温度（35、55 和 70°C）和气体流速（0.125、0.250 和 0.375 L(沼气)L(消化液)(-1)min(-1)）对使用沼气作为汽提气的影响。在 35°C 时，当流速从 0.125 增加到 0.375 L(沼气)L(消化液)(-1)min(-1)时，氨去除率增加了约 4.5 倍。在 55°C 时，在流速为 0.250 和 0.375 L(沼气)L(消化液)(-1)min(-1)时，氨的去除率分别为 3.46 和 9.38%day(-1)。在 70°C 时达到了氨去除的最高值：流速为 0.250 和 0.375 L(沼气)L(消化液)(-1)min(-1)时，分别为 18.4 和 10.4%day(-1)。
