黑龙江科技大学学报2024，Vol.34Issue(4)：544-550,7.DOI:10.3969/j.issn.2095-7262.2024.04.008
粉煤灰基沸石分子筛的制备及其吸附性能
Preparation of zeolite molecular sieve based on fly ash and its adsorption properties
康华 1王京华 1徐佳辉1
作者信息
- 1. 黑龙江科技大学 矿业工程学院,哈尔滨 150022
- 折叠
摘要
Abstract
This paper aims at an insight into the influence of different factors on zeolite preparation and its adsorption effect.The study consists of using fly ash as raw material and simulating dye wastewater with methylene blue;characterizing the zeolites by using scanning electron microscopy,X-ray diffractom-eter,and N2 adsorption and desorption;analyzing the effects of alkaline-ash ratio,crystallization time,and crystallization temperature on the synthesis of zeolites;and exploring the effects of initial concentra-tion of MB solution,adsorbent dosage,adsorption temperature and time on the adsorption effect.The re-sults show that the Faujasite molecular sieve with better shape can be obtained in the presence of the al-kaline-ash ratio of 0.83∶1,the crystallization temperature of 90℃,and the crystallization time of 9 h.The best adsorption performance appears with the adsorption temperature of 25℃,the initial concentra-tion of MB of 200 mg/L,the dosage of adsorbent of 3 g/L,and removal rate of 95.81%.The adsorption thermodynamic analysis shows that the adsorption process conforms to Langmuir model and belongs to the monomolecular layer adsorption.关键词
粉煤灰/八面沸石/亚甲基蓝/吸附Key words
fly ash/Faujasite/methylene blue/adsorb分类
资源环境引用本文复制引用
康华,王京华,徐佳辉..粉煤灰基沸石分子筛的制备及其吸附性能[J].黑龙江科技大学学报,2024,34(4):544-550,7.
