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摘要
以羧甲基纤维素(CMC)和京尼平交联羧烷基壳聚糖(GCC)作为原料,与磺化氧化石墨烯(SGO)相结合制备一种新型多活性位点海绵体复合材料(CMC/SGO-GCC),用于对磺胺二甲氧嘧啶(SDM)的吸附。结果表明,在20℃、pH 8时,CMC/SGO-GCC对SDM的最大吸附量为422.5 mg/g,CMC/SGO-GCC对SDM的吸附在40 min内达到吸附平衡,且CMC/SGO-GCC重复使用后对SDM仍具有很高的吸附能力。
Abstract
A novel multiple active sites sponge composite is fabricated from carboxymethyl cellulose (CMC),Genipin crosslinked carboxyalkyl-chitosan (GCC) and sulfonated graphene oxide (SGO),and used to adsorb sulfonamide antibiotics.This adsorption process is spontaneous and pH dependent,and shows high efficiency in removing sulfadimethoxine (SDM) from aqueous solution.The adsorption of SDM by the composite reaches equilibrium within 40 minutes at 20℃ and a pH of 8,with the maximum adsorption of 422.5 mg·g-1.The composite is verified to maintain a high adsorption capacity for SDM after it has been reused for times.
关键词
壳聚糖
/
废水处理
/
吸附
/
磺胺类抗生素
Key words
chitosan
/
water treatment
/
adsorption
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sulfamide antibiotics
Author summay
聂飘(1997-),女,硕士生,研究方向为污水处理,3538584246@qq.com;刘仰硕(1975-),男,博士,副教授,研究方向为高分子材料与环境保护,liuyangshuo888@163.com。
纤维素-壳聚糖基复合材料对磺胺二甲氧嘧啶的吸附研究[J].
现代化工, 2023, 43(S2): 208-213 DOI:10.16606/j.cnki.issn0253-4320.2023.S2.041
