Competition Adsorption on Heavy Metals of the Yellow River Sediments in the Polyion Coexisting System

HE Jiang; LI Chao-sheng; WANG Xin-wei; SUN Wei-guo; MI Na

Sediments are taken from the clean reach in the Baotou section of the Yellow Riv er as the adsorbent, the mixed solution system made up of Pb ²⁺, Cu ²⁺, Zn ²⁺ and Cd ²⁺ as the adsorbate, experimental research has been car ried out on the competition adsorption of the Yellow River sediments on heavy me tals. The experiment has clarified the competitive adsorption order of Pb ²⁺ ≥ Cu ²⁺ Zn ²⁺ ≥ Cd ²⁺, the cooperative adsorption relation of Cu—Pb, Zn—Cd and the resistant adsorption relation of Cu—Zn, Cu—Cd, Pb— Zn and Pb—Cd. The study is of great significance in evaluating the potential ri sk of heavy metals in the river sediments.

Competition Adsorption on Heavy Metals of the Yellow River Sediments in the Polyion Coexisting System

Department of Ecology and Environment Science, Inner Mongolia Uni versity, Huhhot 010021

Received Date: 2002-05-13

Rev Recd Date: 2002-07-11

Publish Date: 2003-09-10

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Abstract: Sediments are taken from the clean reach in the Baotou section of the Yellow Riv er as the adsorbent, the mixed solution system made up of Pb ²⁺, Cu ²⁺, Zn ²⁺ and Cd ²⁺ as the adsorbate, experimental research has been car ried out on the competition adsorption of the Yellow River sediments on heavy me tals. The experiment has clarified the competitive adsorption order of Pb ²⁺ ≥ Cu ²⁺ Zn ²⁺ ≥ Cd ²⁺, the cooperative adsorption relation of Cu—Pb, Zn—Cd and the resistant adsorption relation of Cu—Zn, Cu—Cd, Pb— Zn and Pb—Cd. The study is of great significance in evaluating the potential ri sk of heavy metals in the river sediments.

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Competition Adsorption on Heavy Metals of the Yellow River Sediments in the Polyion Coexisting System

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