改性沸石在农村生活污水处理中的应用
Application of Modified Yolite in Rural Domestic Wastewater Treatment
杨丽萍1
作者信息
- 1. 河北科技大学,河北石家庄 050000
- 折叠
摘要
使用3种类型的沸石粉末(2种不同粒径分布的未改性沸石粉末和H2O2改性沸石粉),考察了其对农村生活污水中氨离子吸附能力.采用了多种技术,包括X射线衍射(XRD)分析、Brunauer-Emmett-Teller(BET)多层吸附理论测量实验,证明沸石粉末可以用作水中NH4+的吸附剂.通过动态光散射研究了沸石粉末的粒径.氮吸附-脱附等温线显示出I型(纯微孔)和IV型(介孔)的混合等温线.这表明所研究的沸石材料是介孔(4.84 nm)和微孔(0.852 nm),并且含有缝隙/圆柱孔.改性沸石展现出良好的NH4+吸附性能(去除效率为72％),是一种潜在的吸附剂,可用于处理受氨离子污染的农村生活污水.
Abstract
The adsorption capacity of unmodified Yolite powder and H2O2-modified Yolite powder was investigated for the adsorption of ammonia ions in rural domestic wastewater using three types of Yolite powders: two unmodified Yolite powders with different particle size distributions and H2O2-modified Yolite powder. Various techniques were used, including X-ray diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) multilayer adsorption theory measurements, the results demonstrated that Yolite powders could be used as adsorbents for NH4+ ions in water. The particle size of Yolite powder was studied by dynamic light scattering. The nitrogen adsorption-desorption isotherms showed a mixture of type I (pure microporous) and type IV (mesoporous) isotherms. It was shown that the studied Yolite material was mesoporous (4.84 nm) and microporous (0.852 nm) and contained slit/cylindrical pores according to the density flood theory (QSDFT) adsorption branch model. The modified Yolite exhibited good NH4+ adsorption performance (72％ removal efficiency) and was a potential adsorbent for the treatment of rural domestic wastewater contaminated with ammonia ions.
关键词
污水处理/改性沸石/吸附性/吸附模型Key words
Wastewater treatment/Modified Yolite/Adsorption/Adsorption modeling引用本文复制引用
基金项目
河北重点研发计划项目(AB211960326)
出版年
2024
NETL
NSTL
万方数据