The material with small size and high efficiency is the topic of the future. It
is valuable and important in the field of separation and purification science. This
chapter discusses ion-exchange materials, natural, synthetic, organic, inorganic and
organic-inorganic nanocomposite. In this chapter, we discussed about the
chromatography of ion-exchange particularly cation-exchanger and its uses as
desalination and ion-selective electrode. The Estimation of the impact on the
manufacturing procedure on the environment requires a systemic approach and suitable
metrics for the quantitative valuation of environmental threats. Thus, this chapter starts
with an overview on cation exchange materials for green technology as well as the
metrics starting the procedure. Therefore, there are many applications of cationexchange
materials and their derivatives have been explained in this chapter. In
addition, the technological advancement in inorganic nanocomposite, cation-exchange
materials from old era to modern age of nano are also explained as green chemistry and
can be implemented to actual developments. Specifically, two elements are
highlighted: (a) the usage of new resources for the facilitation of selective and active
chemistry and the implementation of the said materials for the removal of hazardous
materials for environment.
Keywords: Cation-exchanger, Heavy metal, Ion selective electrode, Life spam,
Membrane, Nanocomposite, Polymer, Selectivity.
