摘要：氯化钠联合加热对沸石进行改性是一种操作简单、效果比较好的改性方法，主要是改变沸石的内部结构与表面结构来提高其吸附率。本文采用单因素实验法，对天然斜发沸石进行改性，实验结果表明，在氯化钠质量分数为12%、浸泡时间为90min、焙烧时间为120min、焙烧温度为90℃的条件下，改性的沸石对废水中亚甲基蓝吸附率最大。采用正交实验法研究改性沸石对废水中亚甲基蓝的吸附条件，当改性沸石投加量为0.15g/mL、pH为7、吸附温度为60℃、吸附时间为40min时，为最佳吸附条件，去除率达95.07%。
关键词：氯化钠，加热改性，改性沸石，亚甲基蓝
Experimental Research on Methylene Blue Wastewater Treatment by the Method of Sodium Chloride Combined with Heated Zeolite
Abstract: The method of sodium chloride combined with heated zeolite was efficient modifying zeolite, which could change the internal and surface structures to improve the adsorption efficiency of zeolite. Natural clinoptilolite was modified using single factor experiments in this study. The results showed that the adsorption rate of modified zeolite on methylene blue was the maximum when the sodium chloride fraction was 12%, soak and roast time were 90min and 120min at 90℃. Meanwhile, the adsorption conditions of modified zeolite on methylene blue were also studied by orthogonal experiment. It has been discovered that the methylene blue removal rate was 95.07% when the dosage of modified zeolite was 0.15g/mL, pH value was 7.0 and adsorption time was 40min at 60℃, which was also the optimum adsorption condition.
Keywords: Sodium chloride; Heating modification; Modified zeolite; Methylene blue
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