REMOVAL OF ENVIRONMENTAL POLLUTIONS USING ZEOLITES FROM FLY ASH: A REVIEW
REMOVAL OF ENVIRONMENTAL POLLUTIONS USING ZEOLITES FROM FLY ASH: A REVIEW
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发表时间：
2015
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通讯作者：
M. Wdowin;L. Bandura;W. Franus
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作者：
M. Wdowin;L. Bandura;W. Franus
介绍了合成沸石在环境保护和工程中应用的可能性。作为粉煤灰合成反应的结果，获得了以下类型的沸石：Na-X、Na-P 1、方钠石以及由Na-P 1/Na-X/LindeA和Na-P 1/Linde-A组成的两种沸石混合物。获得的沸石进行了测试，从水中去除铵离子，放射性核素（226 Ra和228 Ra）从矿井水，锌离子从洗涤浴，从废气中的CO2，和炼油。在铵离子去除的情况下，这些离子从水溶液中的吸收增加与测试的人工溶液中的NH 4+的初始浓度的增加。放射性核素的去除试验表明，去除效率高达98%。对净化洗涤液的分析结果表明，该沸石对Zn 2+有很高的去除率.沸石在去除二氧化碳方面效果稍差。然而，它们在炼油中是非常好的材料，其中所获得的结果略好于商业上用于该目的的吸附剂。结果表明，在大多数情况下，所测试的沸石非常有效地去除上述污染物，并且是用于所述杂质的各种市售吸附剂的竞争材料。
The paper presents the possibilities of using synthetic zeolites in environmental protection and engineering. As a result of the synthesis reaction of fly ash, the following types of zeolites were obtained: Na-X, Na-P1, sodalite, and two mixtures of zeolites composed of Na-P1/Na-X/LindeA and Na-P1/Linde-A. Obtained zeolites were tested on the removal of ammonium ions from water, radionuclides ( 226 Ra and 228 Ra) from mine water, zinc ions from washing baths, CO2 from exhaust gases, and oil refining. In the case of ammonium ion removal, the uptake of these ions from aqueous solutions increases with the increase in the initial concentration of NH4 + in the tested artificial solution. The tests of radionuclides removal have shown high efficiency that reached 98%. The analysis of purification washing baths results indicate Zn 2+ high removal efficiency of the tested zeolite. Zeolites are a bit less effective at removing CO2. However, they were very good materials in oil refining where the obtained results are slightly better than for the adsorbents used commercially for this purpose. The results showed that, in most cases, the zeolites tested remove the aforementioned contaminants very effectively, and are a competing material for various kinds of commercially available adsorbents used for the described impurities.