Department of Chemical Engineering, Grupo IMAES, Escuela Técnica Superior de Ingenieros Industriales, Instituto de Investigaciones Energéticas y Aplicaciones Industriales (INEI), University of Castilla-La Mancha, Avda. Camilo José Cela 3, 13071 Ciudad Real, Spain.
Department of Chemical Engineering, Grupo IMAES, Escuela Técnica Superior de Ingenieros Industriales, Instituto de Investigaciones Energéticas y Aplicaciones Industriales (INEI), University of Castilla-La Mancha, Avda. Camilo José Cela 3, 13071 Ciudad Real, Spain.
Sci Total Environ. 2021 Oct 10;790:148136. doi: 10.1016/j.scitotenv.2021.148136. Epub 2021 May 29.
The capture of ambient air CO from synthetic urban wastewater mineralization reaction was studied. An ion exchange membrane was used as sorbent, which adsorbs CO when dry and releases it when wet. The UV/HO degradation process was chosen to convert Total Organic Carbon (TOC) to carbon dioxide due to its advantages of convenience and fast kinetics over the conventional biological treatment that is usually used in urban wastewater treatment plants. In the first phase, experiments combining UV-C light and HO were carried out to select the optimal values of the following parameters: pH, the dose of HO and temperature. In the second stage, the CO emission into the air from the degradation of organic compounds present in wastewater during UV/HO process in the absence or presence of ion exchange membranes was evaluated. The effects of parameters such as temperature or air humidity were studied. A qualitative study of desorption was carried out to check the viability of reuse CO captured in the membrane. Finally, a similar CO adsorption capacity after five cycles of adsorption and regeneration of the membranes was observed, being percentage loss of around 4%.
研究了从合成城市废水矿化反应中捕获环境空气中的 CO。使用离子交换膜作为吸附剂，在干燥时吸附 CO，在湿润时释放 CO。由于 UV/HO 降解过程在常规生物处理方面具有便利性和快速动力学的优势，通常用于城市污水处理厂，因此选择该过程将总有机碳 (TOC) 转化为二氧化碳。在第一阶段，进行了结合 UV-C 光和 HO 的实验，以选择以下参数的最佳值：pH 值、HO 的剂量和温度。在第二阶段，评估了在不存在或存在离子交换膜的情况下，UV/HO 过程中废水中存在的有机化合物降解时向空气中排放 CO 的情况。研究了温度或空气湿度等参数的影响。进行了解吸的定性研究，以检查在膜中捕获的 CO 再利用的可行性。最后，观察到在膜的吸附和再生的五个循环后，仍具有类似的 CO 吸附能力，损失率约为 4%。
