Nirmali Seed as a Natural Biosorbent; Evaluation of its Potential for Iron (II) Removal from Steel Plant Effluents and Sewage Disinfecting Capacity

The idea of water clarification by natural coagulants is many centuries old. Natural coagulants like Moring oelifera, Mangifera indica and Prunusarmeniaca, Strychnospotatorum are used for the treatment of waste waters. Nirmali Seed is a natural coagulant material with polyelectrolytes. These polyelectrolytes are responsible for coagulation property of Nirmali seeds. In general, the studies rampant in the literature reported application of Nirmali seed powder as water extract or as powder with dose selection using jar test. The treatment in most of the cases is based upon coagulation and removal. But in this study it has been modified that the methodology to suit our objectives as wanted to test the potential of Nirmali seed as a solid bio-sorbent surface in solid solution equilibrium adsorption studies. The dose selection has been done keeping in mind the amount of polyelectrolyte released when the seed powder is left in solution. The property of physi-sorption aided with chemi-sorption with minimum dose has been given importance in the present study. The chief goal of this study is to find out the feasibility of applications of Nirmali Seeds for both Iron (II) reduction as well as disinfecting agent for sewage samples.