文献类型：期刊文献

中文题名：基于壳聚糖的多孔吸附剂的制备及其吸附性能研究

英文题名：Preparation and adsorption property of chitosan-based porous adsorbent

作者：景占鑫[1];张琼珊[1];黄海[1];冼雪滢[1];戴香怡[1]

机构：[1]广东海洋大学化学与环境学院,广东湛江524088

年份：2020

卷号：49

期号：8

起止页码：1985

中文期刊名：应用化工

外文期刊名：Applied Chemical Industry

收录：CSTPCD、、北大核心2017、CSCD_E2019_2020、北大核心、CSCD

基金：广东省自然科学基金(2018A03037020);广东省普通高校青年创新人才项目(2017KQNCX089);湛江市科技计划项目(2017A02016);国家级大学生创新创业项目(CXXL2018034);广东海洋大学“海之帆”启航科技计划项目(qhjhzr201806);广东海洋大学大学生创新创业项目(CXXL2019299)。

语种：中文

中文关键词：壳聚糖;多孔;吸附剂;亚甲基蓝

外文关键词：chitosan;porous;adsorbent;methylene blue

中文摘要：以壳聚糖为原料,制备了具有多孔结构的壳聚糖基水处理吸附剂,以亚甲基蓝分子作为模型污染物,评价了其吸附性能。研究了溶液pH、吸附剂用量、初始浓度、离子强度和吸附时间等因素对吸附亚甲基蓝的工艺条件的影响。结果表明,最优的吸附工艺条件为:pH为10,吸附剂用量为2 g/L,初始浓度为200 mg/L,吸附时间为48 h,此时单位吸附量可以达到95.7 mg/g,去除率可以达到96.0%。结果表明,制备的壳聚糖基多孔吸附剂对亚甲基蓝的吸附过程符合准二级动力学模型。吸附与解吸附研究表明,制备的壳聚糖基多孔吸附剂具有很好的循环利用能力。因此,制备的壳聚糖基多孔吸附剂是一种具有潜力的吸附剂,其在废水处理领域具有潜在的应用价值。

外文摘要：Chitosan-based water treatment adsorbent with porous structure was prepared using chitosan as raw material,and the methylene blue molecule was used as model pollutant to evaluate its adsorption property.The effects of solution pH,adsorbent dosage,initial concentration,ionic strength and adsorption time on the process conditions of adsorption of methylene blue were investigated.The results show that the optimal adsorption were achieved at the conditions(pH 10,adsorbent dosage 2 g/L,initial concentration 200 mg/L,and adsorption time 48 h),and the adsorption capacity can reach 95.7 mg/g,the removal rate can reach 96.0%.The results show that the adsorption process of the prepared chitosan-based porous adsorbent for methylene blue is in good agreement with to the pseudo-second-order kinetic model.Adsorption and desorption studies reveal that the prepared chitosan-based porous adsorbent has good recycling ability.Therefore,the prepared chitosan-based porous adsorbent is a potential adsorbent,which has potential application value in the field of waste treatment.