Preparation and applications of modified chitosan based carbobetaine gel system for treatment of acephate contaminated water

Abstract

The pesticide toxicity and its degradation product may lead to the need of devising techniques for treatment of pesticide contaminated water. In present study, we have attempted to manage chitin waste to chitosan based gel system, which was put to an ecofriendly application of removal of acephate, a representative of organophosphate pesticide, from contaminated water. The isolated chitosan from chitin biowaste was characterized for solubility, viscosity, particle size, degree of deacetylation and molecular weight determination. Further, chitosan was treated with glutaraldehyde and nitrogen centers of this extended chain were quaternized with γ-butyrolactone to form carbobetaine gel system. An external crosslinker is also used for better gelation property. The prepared chitosan based carbobetaine gel system was used to treat acephate contaminated water. The work aims to manage chitin biowaste to chitosan as a precursor to generate value added product from low cost materials to solve environmental issues.