However, when the chitosan-to-natural zeolite mass ratio exceeds 0.05, there is a decreasing trend in the removal rate of Cd(II), suggesting that an excessively high mass ratio is unfavorable for improving the adsorption performance of the composite adsorbent.
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Adsorption Properties of Natural Zeolite Supported by Chitosan on Cd(II) in Micropolluted Irrigation Water.
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