▎ 摘　　要

NOVELTY - Preparing modified nano-cellulose aerogel, involves dissolving maleopimaric acid in a first solvent, adding thionyl chloride for reaction to obtain maleopimaric acyl chloride. The maleopimaric acyl chloride is added into a second solvent, and further added vinyl magnesium bromide, and reacted at 60-80℃ for 2-6 hours to obtain maleopimaric vinyl ketone. The maleopimaric-based vinyl ketone is dissolved in a solvent, sequentially added nano-cellulose, carboxymethyl chitosan, sodium alginate and graphene oxide, and stirred at 50-80℃ to react for 12-36 hours to obtain modified nano-cellulose hydrogel, and freeze-dried the modified nano-cellulose hydrogel to obtain aerogel. USE - Method for preparing modified nano-cellulose aerogel used in the adsorption of cupric ion (Cu2+)and lead ion (Pb2+) in wastewater to analyze it (all claimed). ADVANTAGE - The preparation method of the modified nanocellulose aerogel is simple, and the modified nanocellulose aerogel has excellent performance, where the adsorption capacity of Cu2+reaches 190 mgg-1, and adsorption capacity for Pb2+adsorption reaches 550 mgg-1. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of modified nano-cellulose aerogel used in the adsorption of cupric ion (Cu2+)and lead ion (Pb2+) in wastewater, where adsorption capacity of the modified nanocellulose aerogel for Cu2+ is 170-190 mg.g -1, and the amount of adsorption for Pb2+ is 450-550 mg.g-1.