Mass transfer mechanisms of water pollutions adsorption mediated by different natural adsorbents

In textile industries, residual dyes and heavy metals are usually released into environment via wastewater effluent. Because of their negative effects not only to environment but also to human health, these contaminants are required to be removed from water environment. To achieve the effective adsorption of dye and heavy metal, the adsorption mechanism needs to be understood clearly. In this study, the complexity of adsorption of Remazol brilliant blue R (RBBR), methyl orange (MO), copper (Cu) ions, and iron (Fe) ions onto numerous natural adsorbents was analyzed using the modified mass transfer factor model (MMTF). The secondary adsorption data were collected from various sources. The study found that MMTF has a superior adaptability for describing the mechanism of the adsorption of dyes and heavy metals both in solely and in multi solute.