Several low cost adsorbents such as xanthated saw dust, peanut skins, rice straw and hulls, peat, activated charcoal, rice husk, coconut husk and rice bran, silica, Albizzia lebbeck pods, lime, steel wool, lignin and Ablesmoschus esculentus etc.
Albizzia lebbeck pods, Groundnut shells have been procured from Thapar Institute of Engineering & Technology campus and local market respectively.
Groundnut shell, Albizzia lebbeck pods are pretreated to improve the physical characteristics of the adsorbents to prevent color leaching as well as to insolubilise the tannins.
Although Albizzia lebbeck pods had potential for biosorption but being seasonal cannot be exploited for commercialization.
Albizzia lebbeck and Groundnut shell in combination and of pure Groundnut shell column.