Nghiên cứu chế tạo vật liệu nanocompozit có độ xốp cao từ Chitosan, hydroxyapatit và graphene ứng dụng hấp phụ phẩm nhuộm và cố định vi khuẩn

Abstract

     This paper aims to use the components recovered from seafood by-products to fabricate high porous nanocomposites for dye adsorption and bacterial immobilization. The nanocomposites were prepared by a facile method using starting materials, including chitosan, hydroxyapatite nanoparticles, and graphene. Chitosan and hydroxyapatite were recovered from moulted shrimp shells and catfish bones, respectively. The as-prepared nanocomposites had a high porosity and could separated easily for reuse. The results showed that the highest adsorption capacity of the nanocomposite for methylene orange was 129.98 mg/g and the adsorption efficiency was over 98% after five recycles. Besides, the obtained materials could immobilized over 5.4% bacteria for 108h even under wet-state. These findings suggest seafood by-products as a potential source for preparation of advanced composites for wastewater treatment.