ADSORPSİYON VE İYON DEĞİŞİMİ PROSESLERİYLE İÇME SULARINDAN DOĞAL ORGANİK MADDE GİDERİMİ

Abstract

As well as its negative effects on water quality, natural organic matter (NOM), a complex heterogeneous mixture of organic substances, poses a significant health risk fo humans by creating disinfection by-products such as trihalomethane (THM) and haloacetic acid (HAA) as a result of its reaction with chlorine. Furthermore, the large variation in NOM concentration and composition make it difficult to treat the NOM in water treatment plants. Various treatment method for NOM removal from drinking water have been investigated so far. Among these methods, adsorption is one of the most studied and applied processes for NOM removal. Ion exchange has also emerged as an alternativeprocess to adsorption for NOM removal. NOMs most of which are negatively charged fractions can be removed with anion exchange resins. In this study, the suggested information by various researchers about the performance of adsorption and ion exchange processes used for NOM removal from drinking water was complied and presented. In this context, the used diverse adsorbents in NOM removal, which are original and the surfaces of which were modified with different methods, were examined and NOM removal efficiencies of these adsorbents and the factors affecting their removal were discussed. In addition, the use of ion exchange resins and the effect of the resin structure on performance were discussed in the study. Different ion exchange processes, such as magnetic ion exchanger (MIEX), fluidized bed ion exchanger (FIX) and suspended ion exchanger (SIX®), which are specifically designed for there moval of dissolved organic carbon (DOC), were mentioned, as well.