Recovering nitrogen from source-separated urine can offset fertilizer production, reduce the energy consumption associated with wastewater treatment, and help prevent certain pollutants from entering into wastewater treatment plants. This study evaluated the performance of a newly designed porous organic polymer (POP) for removing ammonium (NH₄⁺) from synthetic hydrolyzed urine in comparison with natural clinoptilolite in terms of adsorption capacity (isotherm), adsorption rate (kinetics), regeneration rate, and adsorbent cost. NH₄⁺ removal from hydrolyzed urine using the POP was rapid with a capacity of 74.96 mg/g, which is about four times higher than clinoptilolite (15.42 mg/g). In addition, the predicted capacity of both adsorbents decreased with the number of cycles using an integrated adsorption-regeneration model, but remained at about 83.4 % and 21.6 % of the pristine POP and clinoptilolite after 24 cycles, respectively. The POP had a higher adsorbent cost than clinoptilolite, however, it can be competitive to clinoptilolite with multiple uses if its production can be scaled up.

从按源分类的尿液中回收氮可以抵消化肥的生产，减少与废水处理有关的能源消耗，并有助于防止某些污染物进入废水处理厂。这项研究评估了一种新型设计的多孔有机聚合物（POP）与天然斜发沸石相比从合成水解尿液中去除铵（NH ₄ ⁺）的性能，包括吸附容量（等温线），吸附速率（动力学），再生速率，和吸附剂成本。NH ₄ ⁺使用POP从水解尿液中快速去除，容量为74.96 mg / g，约为斜发沸石（15.42 mg / g）的四倍。另外，使用集成的吸附-再生模型，两种吸附剂的预测容量随循环次数的增加而降低，但在24个循环后分别保持在原始POP和斜发沸石的约83.4％和21.6％。POP的吸附剂成本高于斜发沸石，但是，如果可以扩大生产规模，则它可以与多种用途的斜发沸石竞争。