【作者】 贾琬鑫； 芦冬涛； 双少敏； 董川；

【Author】 Wanxin Jia;Dongtao Lu;Shaomin Shuang;Chuan Dong;Institute of Environmental Science, Shanxi University;

【机构】 山西大学环境科学研究所；

【摘要】 氨基黑10B(C₍22(H₁₄N₆Na₂O₉S₂,Amido black 10B),是一种偶氮类染料,具有较高的毒性,当其废水排放到环境水体中会对水中生物造成极大危害,并且具有强烈的三致（致癌、致畸、致突变）作用,对人类健康造成严重威胁^[1,2]。因此发展一种经济、高效、易回收、操作简便的方法来吸附废水中的氨基黑10B染料极为重要。本研究采用一步水热法合成了磁性壳聚糖纳米颗粒(Fe₃O_4-CS MNPs),利用SEM、FT-IR、TGA和VSM等进行表征,并考察了其对氨基黑10B的吸附性能。结果表明:在温度为25℃,溶液pH=2时吸附效果最佳;吸附动力学符合准二级动力学模型,且吸附80 min达到平衡。吸附等温线符合Freundlich等温吸附模型,最大吸附量为102.2 mg/g。该纳米颗粒合成简单、吸附效率高、易回收,有望应用于废水中的氨基黑10B的吸附。更多还原

【Abstract】 In this study, magnetic chitosan nanoparticles(Fe₃O_4-CS MNPs) was synthesized by a simple one-pot hydrothermal and characterized by SEM, FT-IR, TGA and VSM. Then we studied the absorption behaviors of Amido black 10 B. Batch absorption experiments were carried out to study the effect of pH, concentration of Amido black 10 B, and adsorbent dosage. The results illustrated that a saturation magnetization value was 102.2 mg/g at pH=2. The adsorption equilibrium data fitted well with the Freundlich isotherm model and the adsorption process followed the pseudo-second-order kinetic model. Besides, Fe₃O_4-CS MNPs possess simple synthesis route, high absorption efficiency, and excellent reusability, applying in the absorption of Amido black 10 B in waste water.更多还原