Eggshell-Waste-Derived Calcium Acetate, Calcium Hydrogen Phosphate and Corresponding Eggshell Membranes

The development of innovative transformation techniques for various wastes generated by the agri-food industry is one goals sustainable waste management oriented toward “zero-waste” approach. This includes production bulk and fine chemicals, bioactive compounds, enzymes functional materials from waste. present research shows possibility value-added products eggshell using chemical acetic o-phosphoric acid at a laboratory scale level. Eggshell-derived calcium acetate monohydrate hydrogen phosphate, both high purity, as well corresponding membranes valuable by-products, were produced. Chemical 100 g with 10% (w/v) resulted in 111.41 ± 2.13 2.90 0.14 membranes, yield 79.16 1.98%. On other hand, 15% yielded 77.06 6.21 phosphate 2.94 0.08 71.36 5.58%. met all prescribed criteria food-grade additive, determined physicochemical analysis. majority, except water insoluble formic oxidizable impurities content. Based on obtained results, it can be concluded that proposed process two different acids might useful additives, by-products.