The creation of an adsorbent with a high adsorption capacity and low cost for removing different pollutants from polluted waters has proven particularly intriguing. Natural zeolites, which are crystalline hydrated aluminosilicates with pores filled with water, alkali, and alkaline earth cations, are plentiful and inexpensive supplies. In order to provide an alternative to activated carbon in the treatment of surface and groundwater as well as industrial effluents, inorganic chemical adsorbents have been extensively explored. Natural zeolites have been extensively employed as adsorbents in separation and purification procedures over the past few decades due to their excellent cation-exchange ability and molecular sieve characteristics. The current advancement of natural zeolites as adsorbents in water treatment is reviewed in this research.. We talk about the characteristics and modifications of natural zeolite. Around the world, different natural zeolites have demonstrated variable ion-exchange capacities for cations such as ammonium and heavy metal ions. Adsorption of anions and organics from aqueous solutions is another property of some zeolites. In order to remove aqueous contaminants, including heavy metals, organic matter (both natural and manmade), and anion contaminants, modified clays, zeolites, and layered double hydroxide-based sorbents have recently been developed. The adsorption capacity of modified zeolites for organics and anions is increased using a variety of processes, including acid treatment, ion exchange, and surfactant fictionalization. This paper reviews these developments and offers new insights. In order to handle rising organic micro-pollutants, metal-organic frameworks (MOFs), a novel type of sorbent-metal ions embossed zeolite with extraordinarily high surface areas, are also introduced.

Adsorption. Sorbent. Adsorbents, ion-exchange, cation-exchange, acid treatment, surfactant fictionalization, metal organic framework,