Preparation of zeolite from oil shale residue and its adsorption property to Cr6+

被引：0
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作者：
Liu, Yan-Hui [1 ,2 ]
Xue, Xiang-Xin [1 ]
Song, Hai [2 ]
机构：
[1] Liaoning Key Lab. Ecologically Comprehensive Utilization of Boron Resource and Materials, School of Material and Metallurgy, Northeastern University, Shenyang 110004, China
[2] College of Material Science and Engineering, Shenyang Ligong University, Shenyang 110168, China
来源：
Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering | 2008年 / 8卷 / 06期
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摘要：
The formation and Cr6+ adsorption capability of zeolite synthesized after alkaline activation of a Chinese oil shale residue, and the effects of NaOH concentration, fusion temperature, aging time and aging temperature in closed systems on its adsorption to Cr6+ were investigated. NaOH concentration and aging time affected mainly the crystallinity of zeolite formed. Cr6+ adsorption capability of synthesized products increased with increasing fusion temperature, aging time and aging temperature. Cr6+ adsorption capability of synthesized zeolite decreased with the increase of NaOH concentration, reached its maximum adsorption capacity and adsorption rate for simulated 1 mg/L Cr6+ polluted water were 1.120 mg/g and 89.6% respectively. From the economic point of view, the optimal conditions are determined as follows: NaOH concentration of 4.6 mol/L, fusion temperature of 400°C, aging time of 72 h, and aging temperature of 140°C.
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页码：1108 / 1111
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