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Using cellulose and carboxymethyl chitosan(CMCS) as raw materials, NaOH-urea aqueous solution as a solvent, and epichlorohydrin as a crosslinking agent, we prepared cellulose/CMCS composite aerogel and used it for the adsorption of Methylene Blue(MB).Moreover, we investigated the influencing factors of adsorption efficiency, and analyzed the kinetics and thermodynamics of adsorption behavior.The results show that the adsorption equilibrium is achieved after 180 min for adsorption of 40 mL 100 mg·L-1 MB by 20 mg composite aerogel under the conditions as follows: the mass ratio of cellulose to CMCS of 5∶5,the temperature of 25 ℃,and the pH value of 7.The adsorption capacity of MB reaches 188.67 mg·g-1,and the removal rate reaches 94.33%.The composite aerogel has good recycling performance.After five times of adsorption-desorption, the adsorption capacity of MB is 92.80 mg·g-1,and the removal rate can still reach more than 90%.The adsorption behavior of the composite aerogel to MB conforms to the pseudo-second-order kinetic model and the Langmuir isothermal adsorption model.Cellulose/CMCS composite aerogel can be used as an efficient and renewable biomass-based adsorbent for the treatment of printing and dyeing wastewater.
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Basic Information:
China Classification Code:TQ427.26;O647.3;X703
Citation Information:
[1]YANG Bing,CHEN Ziyue,RAN Jianhua ,et al.Adsorption of Methylene Blue by Cellulose/Carboxymethyl Chitosan Composite Aerogel[J].Chemistry ＆ Bioengineering,2026,43(06):16-22.
Fund Information:
国家自然科学基金项目(62101391)
2026-06-04
2026-06-04