Türkoğlu Demirkol Güler, Çelik Suna Özden, Güneş Durak Sevgi, Acarer Seren, Çetin Ender, Akarçay Demir Sultan, Tüfekci Neşe
Department of Environmental Engineering, Faculty of Engineering, Istanbul University-Cerrahpasa, Avcilar Campus, Istanbul 34320, Turkey.
Department of Environmental Engineering, Corlu Engineering Faculty, Namik Kemal University, Corlu/Tekirdag 59860, Turkey.
Polymers (Basel). 2021 Sep 22;13(19):3201. doi: 10.3390/polym13193201.
Many treatment methods are used to remove iron and manganese from water. Aeration and membrane filtration are two of these methods. In this study, Fe and Mn removal by aeration with different catalysts and instead of simple membrane filtration applied in other studies, the aerated-submerged membrane systems were evaluated separately. When Fe(OH) was applied in the aeration step and complete oxidation of Fe was obtained after 27 min, while complete Mn oxidation was obtained in 76 min. However, when MnO was applied in the aeration step, complete oxidation of Fe and Mn was relatively slow (36 and 110 min, respectively). According to the results obtained from the aerated membrane system, Fe and Mn removal were extended by Fe(OH) via adsorption/surface oxidation. It is clearly shown from the flux, resistance results, scanning electron microscope (SEM) and Fourier transform infrared (FT/IR) spectroscopy observation that manganese oxides were deposited mainly in membrane pores forming membrane fouling by small flocs, while iron oxide particles were deposited on the membrane surface. Although the flux performance of PT PES membrane was higher than HF PP membrane, fouling resistance of HF PP membrane was higher than PT PES.
许多处理方法被用于从水中去除铁和锰。曝气和膜过滤就是其中两种方法。在本研究中，与其他研究中应用的简单膜过滤不同，采用不同催化剂曝气来去除铁和锰，并分别评估曝气浸没式膜系统。当在曝气步骤中应用Fe(OH)时，27分钟后铁完全氧化，而76分钟后锰完全氧化。然而，当在曝气步骤中应用MnO时，铁和锰的完全氧化相对较慢（分别为36分钟和110分钟）。根据曝气膜系统获得的结果，通过吸附/表面氧化，Fe(OH)可延长铁和锰的去除时间。通量、阻力结果、扫描电子显微镜（SEM）和傅里叶变换红外（FT/IR）光谱观察清楚地表明，锰氧化物主要沉积在膜孔中，由小絮凝物形成膜污染，而铁氧化物颗粒沉积在膜表面。虽然PT PES膜的通量性能高于HF PP膜，但HF PP膜的抗污染性高于PT PES膜。
