9FU F, WANG Q. Removal of heavy metal ions from wastewaters:a review[J]. Journal of Environmental Management, 2011, 92(3):407-418.
10CHI Y L, ZHANG Q X, LIAO X P, et al. Physicochemical properties and surface activities of collagen hydrolysate-based surfactants with varied oleoyl group grafting degree[J]. Industrial & Engineering Chemistry Research, 2014, 53(20):8501-8508.