Study on Heavy Metal Adsorption in Coastal Sediment of the Yellow River Estuary

Abstract:

We took the surface sediments of the Yellow River as the objects to study the adsorption characteristics of Cu and Pb in coastal sediments. The results indicated that: the smaller the granularity is, the bigger the saturated adsorption capacity is; The adsorption equilibrium time of Cu²⁺, Pb²⁺ is different, but all can achieve adsorption equilibrium in 1.5h; The adsorption capacity increases gradually along with pH, which increases rapidly for Cu²⁺, but increaseing slowly for Pb²⁺. The adsorption capacity of Cu²⁺ assumes a linear relation with initial concentration of absorbent basically; which increases rapidly under lower initial concentration of absorbent for Pb²⁺, but then becomes lower. The adsorption capacity of Cu²⁺, Pb²⁺ increases along with the equilibrium concentration, which increases rapidly for Cu²⁺, but increases rapidly for Pb²⁺ when the equilibrium concentration is relatively lower, then tends to slow down along with the concentration.

• Periodical: Advanced Materials Research (Volumes 201-203)
• Pages: 2540-2543
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.201-203.2540
• Online since: February 2011
• Authors: Qian Qian Wu, Jia Guo Ren
• Keywords: Adsorption, Heavy Metal, Isotherm, Sediment

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