To the best of our knowledge, no comprehensive research has been conducted to investigate and compare NCM for NH4+ adsorption in the samestudy. Moreover, modification ofnatural mineralsat alargerscale may increase the processing cost; therefore reliable water treatment by using non-modified clay minerals is highly desirable. In this study, six types of NCM-based adsorbents namely kaolinite, halloysite, montmorillonite, vermiculite, palygorskite, and sepiolite were investigated and compared their adsorption abilities for NH4+.