[1]刘亚清,张凤娥,林 秀.超声-镧改性沸石吸附氮磷的特性[J].常州大学学报(自然科学版),2019,31(02):76-81.[doi:10.3969/j.issn.2095-0411.2019.02.010]
　LIU Yaqing,ZHANG Fenge,LIN Xiu.Study on Adsorption Kinetics of Nitrogen and Phosphorus by Ultrasonic-Lanthanum Modified Zeolite[J].Journal of Changzhou University(Natural Science Edition),2019,31(02):76-81.[doi:10.3969/j.issn.2095-0411.2019.02.010]
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超声-镧改性沸石吸附氮磷的特性()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年02期
页码:
76-81
栏目:
环境科学与工程
出版日期:
2019-03-28

文章信息/Info

Title:
Study on Adsorption Kinetics of Nitrogen and Phosphorus by Ultrasonic-Lanthanum Modified Zeolite
文章编号:
2095-0411(2019)02-0076-06
作者:
刘亚清; 张凤娥; 林 秀
(常州大学 环境与安全工程学院,江苏 常州 213164)
Author(s):
LIU Yaqing;  ZHANG Feng’e;  LIN Xiu
(School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China)
关键词:
超声-镧;  沸石;  氮磷;  动力学
Keywords:
ultrasonic-lanthanum;  zeolite;  nitrogen and phosphorus;  kinetics
分类号:
X 703
DOI:
10.3969/j.issn.2095-0411.2019.02.010
文献标志码:
A
摘要:
为了去除污水中的氮磷,采用超声-镧改性沸石(ULZ)吸附处理,通过扫描电镜(SEM)、能谱分析(EDS)和比表面积与孔径分析(BET)对ULZ进行表征,并进行吸附动力学、吸附热力学、吸附等温线的研究。结果表明,ULZ比表面积增加,La的质量分数由0%提高到0.49%; ULZ吸附氮磷的过程符合准二级动力学方程; 该吸附一个自发吸热的过程,自发程度与温度成正比; Langmuir吸附模型能更好地描述ULZ对氮磷的吸附过程; ULZ对河道污水中氮、磷的去除率最高可达93.0%和98.7%,处理结果均达到地表水环境质量Ⅲ类标准。
Abstract:
In order to remove nitrogen and phosphorus from the river sewage, ultrasonic -lanthanum modified zeolite(ULZ)was used as an adsorbent. ULZ was characterized by SEM, EDS and BET. Adsorption kinetics, adsorption isotherm and adsorption thermodynamics were studied. The results showed that the specific surface area of ULZ increased, and the content of La increased from 0% to 0.49%. The adsorption kinetics could be expressed by the pseudo- second-order model. The results showed that the adsorption was the endothermic process of spontaneous reaction. The adsorption process of ULZ to nitrogen and phosphorus could be well described by Langmuir adsorption mode. The removal rate of nitrogen and phosphorus in river sewage by ULZ was up to 93.0% and 98.7%, and the treatment results all reached the Class III standard for surface water environmental quality.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:2018-11-05。
基金项目:2014龙城英才项目第六批领军人才优先支持项目(2014150)。
作者简介:刘亚清(1994—),女,江苏靖江人,硕士生。通信联系人:张凤娥(1964—),E-mail:zfelzh@cczu.edu.cn
更新日期/Last Update: 2019-03-30