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Na-A zeolite was successfully synthesized via the alkaline fusion method with oil shale ash as the raw material. The adsorption capacity of it was tested by removing Cu2+, Ni2+, Pb2+ and Cd2+ from aqueous solutions. The results reveal the maximum adsorption capacity of adsorbent for Pb2+, Cu2+, Cd2+ and Ni2+ were 224.72, 156.74, 118.34 and 53.02 mg/g, respectively. The effects of contact time and...
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