| 壳聚糖/沸石分子筛复合吸附颗粒的制备与性能 |
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| 引用本文： | 郜玉楠,周历涛,王静,茹雅芳,孙美乔,傅金祥.壳聚糖/沸石分子筛复合吸附颗粒的制备与性能[J].复合材料学报,2019,36(3):701-707. |
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| 作者姓名： | 郜玉楠 周历涛 王静 茹雅芳 孙美乔 傅金祥 |
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| 作者单位： | 沈阳建筑大学 市政与环境工程学院, 沈阳 110168 |
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| 基金项目： | 国家自然科学基金(51508342);辽宁省自然科学基金(201602607);沈阳建筑大学科研创新培育计划项目(CXPY2017008) |
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| 摘 要： | 采用实验室自制壳聚糖/沸石分子筛复合吸附颗粒用于处理水中NH_4^+-N和NO_3^--N,通过优化工艺条件确定最佳壳聚糖/沸石分子筛复合吸附颗粒制备方法,并利用SEM、比表面积(BET)、FTIR和XPS分析壳聚糖/沸石分子筛复合吸附颗粒表面物化特性。结果表明:壳聚糖/沸石分子筛复合吸附颗粒最佳制备条件为:乙酸浓度为4vol%,壳聚糖浓度为7g/L,振荡时间为10h,振荡温度为30℃。制得的壳聚糖/沸石分子筛复合吸附颗粒对NH_4^+-N和NO_3^--N的吸附量分别达到0.636mg/g和1.952mg/g,去除率分别为81.60%和40.28%。壳聚糖/沸石分子筛复合吸附颗粒表面形貌呈现较多凸起和微孔,比表面积为391.52m2/g。FTIR分析结果表明,壳聚糖特征官能团—NH2和—CH3已负载于沸石分子筛的基本骨架中。XPS分析结果表明,元素O1s在壳聚糖与沸石分子筛的连接过程中起主要作用,该研究成果可为北方严寒地区净水厂的提标改造提供理论依据。
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| 关 键 词： | 壳聚糖 沸石分子筛 吸附 NH4+-N NO3--N |
| 收稿时间： | 2018-03-01 |
Preparation and performances of chitosan/zeolite molecular sieve composite adsorbed particles |
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| GAO Yu'nan,ZHOU Litao,WANG Jing,RU Yafang,SUN Meiqiao,FU Jinxiang.Preparation and performances of chitosan/zeolite molecular sieve composite adsorbed particles[J].Acta Materiae Compositae Sinica,2019,36(3):701-707. |
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| Authors: | GAO Yu'nan ZHOU Litao WANG Jing RU Yafang SUN Meiqiao FU Jinxiang |
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| Affiliation: | School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China |
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| Abstract: | The optimum preparation method of chitosan/zeolite molecular sieve composite adsorbed particles was confirmed through the modified conditions for the removal of NH4+-N and NO3--N simultaneously. And the surface physicochemical properties of the chitosan/zeolite molecular sieve composite adsorbed particles were analyzed by SEM, specific surface area (BET), FTIR and XPS, respectively. The results show that when the mixed solution of acetic acid and chitosan with the concentration of 4vol% and 7 g/L is vibrated for 10 h at the temperature of 30℃, the adsorption capacity of the prepared chitosan/zeolite molecular sieve particles for NH4+-N and NO3--N is 0.636 mg/g and 1.952 mg/g and the removal rate reachs 81.60% and 40.28%, respectively. More protrusions and micropores are also found on the surface of chitosan/zeolite molecular sieve particles with the specific surface area of 391.52 m2/g. FTIR analysis shows that -NH2 and -CH3, the characteristic function groups of chitosan are already loaded into the basic framework of zeolite molecular sieve and the XPS analysis indicates that the element O1s plays an important role in the attachment of chitosan to zeolite molecular sieves. The findings of the research can provide a theoretical basis for the upgrading of water purification plant in the northern cold region. |
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| Keywords: | chitosan zeolite molecular sieve adsorption NH4+-N NO3--N |
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