The research of a novel flocculant mainly prepared by Moringa seed meal

Abstract

As a product of oil extraction from Moringa seeds, Moringa seed meal contains a large amount of flocculant active substances, which are not effectively utilized at present. The concentration of 50 mg L−1 Moringa seed meal extract could be prepared by the mixture of Moringa seed meal defatted powder (100 mesh) and NaCl solution (0.5 mol L−1). According to the share ratio, a novel natural flocculant was formed from 10 mL Moringa seed meal extract (50 mg L−1), 11.94 mg cactus powder (60 mesh) as well 2 mL sodium alginate solution (5 mg L−1). The experimental result suggested that for 400 mL of 100 NTU kaolin suspension, the turbidity removal effect of flocculant was 93.1 % with no increase in turbidity during the resting process, testifying to its biodegradability and ecological safety.