沸石/牡蛎壳复合材料的优化制备及吸附性能研究
Research on Optimum Preparation and Adsorption Properties of Zeolite/Oyster Shell Composites
孙米乐 1刘泽 1赫毅 1李鹏 1寇明月 1袁爱花 2张媛媛1
作者信息
- 1. 山东石油化工学院,山东东营 257100
- 2. 山东海科化工集团有限公司,山东东营 257237
- 折叠
摘要
为实现多种污染物的低能耗、高效率地协同去除,利用正交试验法优化沸石/牡蛎壳(Z-OS)复合材料在不同条件(原料比、试剂用量、焙烧温度、焙烧时间)下对NH4+-N和PO43-的协同吸附效果.实验得到最优条件:吸附PO43-材料优选中,m(沸石)∶m(牡蛎壳)为2∶1,ω(乙二醇)为20％,焙烧温度为700℃,焙烧时间为90min;吸附NH4+-N材料优选中,m(沸石)∶m(牡蛎壳)为2∶1,ω(乙二醇)为20％,焙烧温度为600℃,焙烧时间为30min.在最佳吸附条件下,复合材料对PO43-和NH4+-N的吸附率分别可高达97.27％和83.18％.通过SEM和BET表征发现,Z-OS复合材料表面微观形态粗糙,呈现不规则的团状结构,为典型的介孔结构且孔径集中分布于2.3～7.4 nm.
Abstract
In order to realize the collaborative removal of various pollutants with low energy consumption and high efficiency,the orthogonal test method was used to optimize the synergistic adsorption effect of zeolite/oyster shell(Z-OS)composite on NH4+-N and PO43-under different conditions(raw material ratio,reagent dosage,roasting temperature and roasting time).The optimum ratio conditions are as follows:In the material selection for adsorption of PO43-,m(zeolite)∶m(oyster shell)is 2∶1,ω(ethylene glycol)is 20％,the roasting temperature is 700 ℃,and the roasting time is 90 min;In the material selection for adsorption of NH4+-N,m(zeolite)∶m(oyster shell)is 2∶1,ω(ethylene glycol)is 20％,roasting temperature is 600 ℃,roasting time is 30 min.Under the optimal adsorption conditions,the adsorption rates of PO43-and NH4+-N can reach 97.27％and 83.18％respectively.Through SEM and BET characterization,it was found that the surface microstructure of Z-OS composite was rough and showed irregular group structure,which was typical mesoporous structure and the pore size was concentrated in 2.3～7.4 nm.
关键词
吸附/沸石/牡蛎壳/复合材料Key words
adsorption/zeolite/oyster shells/composite material引用本文复制引用
基金项目
东营市科学发展基金(DJB2021005)
山东石油化工学院大学生创新训练计划项目(2022111)
出版年
2024
国家科技期刊平台
NSTL
万方数据