Characterization and utilization of apple peel and grape stems extract constituents as green restraints for aluminum dissolution.

Different flavone extracts from apple peel and aldehydes from grape stems were investigated as restraints of the anodic aluminum dissolution procedure in 60% HPO:40% HSO. The potential-limiting current correlation for Al anode was assessed and associated with regularly improving apple peel and grape stems extract concentration (100 to 1000 ppm range). The limiting current reduces whereas retardation effectiveness (%) increases as the concentrations of apple peel and grape stems extract rise.

Characterization and utilization of Sargassum linifolium and Stypopodium schimperi polysaccharides as blue inhibitors for steel electo-polishing.

Different polysaccharide extracts (crude polysaccharide, fucoidan and alginate) from Sargassum linifolium and Stypopodium schimperi were examined as inhibitors of the carbon steel anodic dissolution process in 8 M phosphoric acid. The anode potential and limiting current relationship was measured and compared for gradually increasing algae extract concentrations (from 20 to 350 ppm). The limiting current decreases while inhibition efficiency (%) increases as the concentrations of all these extracts increase.