Preparation and Adsorption Properties of Chitosan-sodium Alginate Adsorbent
Dye wastewater has deep color,and contains many kinds of organic matter with biological toxicity,which is very harmful to environmental pollution.The adsorption performance of methylene blue solution was studied by using chitosan and sodium alginate as raw materials under the action of CaCl2.The results showed that when the mass ratio of chitosan to sodium alginate was 1∶3,the initial concentration of methylene blue was 100 mg/L,the dosage of adsorbent was 0.1g,the optimal adsorption time was 30 min,removal effect was best.The hydrogel adsorbent can be reused.After 6 desorption regeneration experiments,the removal rate of methylene blue was still 90.3％.
chitosansodium alginatemethylene blue solutionadsorbentpreparation methodperformance study
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