Effect of Biofilm Constituents on Cd²⁺ Adsorption onto Sediments from Yellow River

Abstract:

Biofilm main constituents of the humic acid and synthetic ferrihydrite were used as sorbent on the Wuhai sediment of Yellow River, comparative analysis the Wuhai section sediment of the Yellow River and after doping humic acid and ferrihydrite of Cd²⁺ adsorption characteristics. Discusses the adsorption time, various initial concentrations on Cd²⁺ adsorption onto sediments from Wuhai of Yellow River.The adsorption isotherms and adsorption kinetics were fitted and distribution coefficients were calculated. The results illustrated that the adsorption processes of sediments with different proportions of biofilm main constituents to Cd²⁺ were consistent with Langmuir adsorption isotherm curves (R²≧0.99,p≦0.02,n=7); Doping of humic acid and ferrihydrite on sediment, the distribution coefficients of Cd²⁺ were 6.2959 and 2.711, which were higher than the original (0.8626).

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 189-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.189
• Online since: December 2014
• Authors: Xiao Li Wang*, Wei Wang, Ying Ga Wu
• Keywords: Adsorption, Cd²⁺, Ferrihydrite, Humic Acid (HA), Yellow River Sediments

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