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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
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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PO_(4)^(3-)的协同吸附效果。实验得到最优条件:吸附PO_(4)^(3-)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PO_(4)^(3-)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。 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 eff ect of zeolite/oyster shell(Z-OS)composite on NH4^(+)-N and PO_(4)^(3-)under diff erent 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 PO_(4)^(3-),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 PO_(4)^(3-)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.
作者 孙米乐 刘泽 赫毅 李鹏 寇明月 袁爱花 张媛媛 SUN Mi-le;LIU Ze;HE Yi;LI Peng;KOU Ming-yue;YUAN Ai-hua;ZHANG Yuan-yuan(Shandong Institute of Petroleum and Chemical Technology,Dongying 257100,Shandong,China;Shandong Haike Chemical Group Co.,LTD,Dongying 257237,Shandong,China)
出处 《合成材料老化与应用》 CAS 2024年第2期44-46,60,共4页 Synthetic Materials Aging and Application
基金 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)。
关键词 吸附 沸石 牡蛎壳 复合材料 adsorption zeolite oyster shells composite material
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