水资源与水工程学报

文章摘要

袁时珏,黄远星,李亮,马腾飞,薛磊.沸石吸附水体中氨氮的热力学和动力学过程研究Journal of Water Resources and Water Engineering[J].,2013,24(4):11-14

沸石吸附水体中氨氮的热力学和动力学过程研究

Study on thermodynamic and kinetic of ammonia inwater body adsorbed by zeolite

Received:January 17, 2013 Revised:March 05, 2013

DOI：10.11705/j.issn.1672-643X.2013.04.003

英文关键词: ammonia adsorption zeolite wastewater treatment

基金项目:国家自然科学基金(51208299)；上海市科学技术委员会(11JC1408700)；上海市教育委员会和上海市教育发展基金会“晨光计划”(11CG52)；2011年上海市大学生创新活动计划项目(SH1110252100)

Author Name	Affiliation
YUAN Shijue	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093,China [KH*3D]
HUANG Yuanxing	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093,China [KH*3D]
LI Liang	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093,China [KH*3D]
MA Tengfei	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093,China [KH*3D]
XUE Lei	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093,China [KH*3D]

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中文摘要:

随着近年来各大自然水体富营养化程度的加重,废水中氨氮的处理显得尤为重要。我国浙江缙云有丰富的沸石矿藏,研究其对于沸石的吸附过程有着明显的应用价值。实验结果显示:在288~318K范围内的温度对沸石吸附氨氮过程影响较小,在氨氮初始浓度为30mg/L的条件下,小粒径沸石对氨氮的48h吸附容量为1.13±0.06 mg/g,去除率为91%。大粒径沸石对氨氮的48h吸附容量为1.10±0.06mg/g,去除率为87%。沸石对氨氮的吸附过程遵循二级吸附动力学方程,Freundlich和Langmuir等温吸附方程均适用于描述沸石吸附氨氮的热力学过程。本研究表明天然沸石是一种合适的吸附剂,可用于废水或者天然水体中氨氮的去除。

英文摘要:

The treatment of ammonia in wastewater has attracted more and more attention due to the aggravation of eutrophication of natural water body recently. Jinyun of Zhejiang Province is rich in zeolite minerals, and thus the research on adsorption of zeolite has obvious practical value. The experimental results showed that temperature had little effect on ammonia adsorption within the range of 288-318K.The removal rate of ammonia is 91% within 48h while the initial concentration of ammonia is 30mg/L and the adsorption capacity is 1.13±0.06mg/g for little particle size of zeolite. While for big zeolite, 87% ammonia is removed within 48h and the adsorption capacity is 1.10±0.06mg/g. The adsorption process was found to follow the second order kinetic model. The adsorption thermodynamic could be described by both Freundlich and Langmuir.The result indicated that zeolite is a suitable absorbent and can be used in the removal of ammonia in wastewater or natural water body.

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