海藻酸钠固定化纳米铁还原脱色活性红X3B

发布时间：2018-01-29 01:13

  本文关键词： 海藻酸钠 纳米零价铁 还原脱色 活性红XB 固定化　出处：《中国环境科学》2016年12期 　论文类型：期刊论文

【摘要】：采用海藻酸钠固定纳米铁制备海藻酸钠纳米铁小球,研究了海藻酸钠浓度、纳米铁含量、活性红X3B浓度、反应温度、p H值等对海藻酸钠固定化纳米铁小球还原活性红X3B的影响.采用高效液相色谱(HPLC)、紫外可见分光光度计(UV-Vis)、扫描电镜(SEM)、透射电镜(TEM)等方法分析污染物的还原脱色过程.结果表明,X3B的还原脱色获得了较好的效果,当温度25.0℃,海藻酸钠浓度2.0%,纳米铁含量2.0g/L,转速200r/min,p H值10.9时,反应720min后,25.0mg/L活性红X3B的脱色率达98.9%.海藻酸钠凝胶对活性红X3B没有吸附作用,海藻酸钠固定化纳米铁小球降解活性红X3B的主要机制为纳米零价铁的还原作用.
[Abstract]:Sodium alginate nanocrystalline iron pellets were prepared by using sodium alginate to immobilize nano-iron. The concentration of sodium alginate, the content of nano-iron, the concentration of active red X _ 3B and the reaction temperature were studied. The effect of pH value on the reduction of active red X _ 3B by sodium alginate immobilized nano-iron pellets was studied by HPLC and UV-Vis-UV spectrophotometer. The process of reducing and decolorizing pollutants was analyzed by means of scanning electron microscope (SEM) and transmission electron microscopy (TEM). The results showed that the reduction decolorization of X3B had a good effect when the temperature was 25.0 鈩，

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