摘要:
Apparatus, materials, and methods for removing ammonia from fluids using metal hydroxides (e.g. zinc hydroxide) and metal loaded media (e.g. zinc loaded ion exchange resins); the metal hydroxides and metal loaded media may be regenerated with a weak acid (pKa between 3 and 7). Alternatively, ammonia is removed from fluids by using H2SO4 and ZnSO4 and metal loaded media; the metal loaded media may be regenerated with H2SO4 and ZnSO4; the ammonia containing H2SO4 and ZnSO4 may be concentrated as necessary to form (NH4)2SO4.ZnSO4.6H2O (ammonium zinc sulfate hexahydrate) crystals. These crystals are removed from the mother liquor and heated to temperatures exceeding 200 °C releasing NH3 and H2O vapor upon the decomposition of the crystals.
摘要翻译:使用金属氢氧化物(例如氢氧化锌)和金属负载介质(例如负载锌的离子交换树脂)从流体中除去氨的设备,材料和方法; 金属氢氧化物和金属负载介质可以用弱酸(pKa在3和7之间)再生。 或者,通过使用H 2 SO 4和ZnSO 4和金属负载介质从流体中除去氨; 金属负载介质可以用H 2 SO 4和ZnSO 4再生; 可以根据需要浓缩含有H 2 SO 4和ZnSO 4的氨以形成(NH 4)2 SO 4·ZnSO 4·6H 2 O(六水合硫酸锌)晶体。 将这些晶体从母液中除去并加热到超过200℃的温度,在晶体分解时释放出NH 3和H 2 O的蒸气。