丝光沸石静态吸附牛尿废水中氮的实验研究  

Experimental Study on Removing N from Bovine Urine Wastewater by Mordenite with Static Adsorption

作　　者：李雪英[1] 瞿广飞[1] 曾金花[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《材料导报》2013年第14期78-81,共4页Materials Reports

基　　金：国家"十一五"重大水专项(2008ZX07105-002)

摘　　要：以丝光沸石作为吸附材料,采用静态吸附法考察了丝光沸石对牛尿废水中总氮的吸附效果及影响因素,并对其吸附等温曲线进行了研究。实验结果表明,静态吸附的最佳工艺条件为:处理50mL的总氮质量分数为1.845%的牛尿废水,吸附剂用量为7.0g,牛尿废水pH=8.0,吸附时间为8.0h,温度为30℃。在此条件下,吸附后总氮质量分数可下降到(0.715±0.023)%,去除率可达到(61.2±1.2)%。Freundlich吸附等温方程比Langmuir吸附等温方程能更好地描述氮在丝光沸石上的吸附行为。Using mordenite as the adsorption material, the adsorption effects and the influence factors were in vestigated hy static adsorption method and the adsorption isothermal curves were studied. The results showed that the best adsorption condition was that taking 50 mL bovine urine wastewater with TN 1. 845%, the mordenite dosage was 7.0 g, the pH was 8. 0, the adsorption time was 8. 0 h with the temperature was 30 ℃, under this condition, TN con- centrations could be reduced to （0. 715±0. 023）% and total nitrogen removal rate could reach （61.2±1.2）%. Freun- dlich equation was better than Langmuir equation in describing the behavior of adsorption nitrogen on mordenite.

关 键 词：丝光沸石 牛尿废水 吸附 总氮 

分 类 号：X703.1[环境科学与工程—环境工程]