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Synthesis of hydroxy sodalite from coal fly ash using waste industrial brine solution

机译:利用工业废盐溶液由粉煤灰合成羟基方钠石

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摘要

The effect of using industrial waste brine solution instead of ultra pure water was investigated during the synthesis of zeolites using three South African coal fly ashes as Si feedstock. The high halide brine was obtained from the retentate effluent of a reverse osmosis mine water treatment plant. Synthesis conditions applied were; ageing of fly ash was at 47℃ for 48 hours, and while the hydrothermal treatment temperature was set at 140℃ for 48 hours. The use of brine as a solvent resulted in the formation of hydroxy sodalite zeolite although unconverted mullite and hematite from the fly ash feedstock was also found in the synthesis product.
机译:在使用三种南非粉煤灰作为硅原料合成沸石的过程中,研究了使用工业废盐溶液代替超纯水的效果。高卤化物盐水是从反渗透矿井水处理厂的渗余液中获得的。采用的合成条件为:粉煤灰的老化时间为47℃48小时,而水热处理温度为140℃48小时。尽管在合成产物中还发现了来自粉煤灰原料的未转化的莫来石和赤铁矿,但使用盐水作为溶剂导致羟基方钠石沸石的形成。

著录项

  • 来源
    《Journal of Environmental Science and Health》 |2011年第14期|p.1699-1707|共9页
  • 作者单位

    Environmental and Nano Science Research Group, Department of Chemistry, University of the Western Cape, Private Bag X17 Bellville, 7535, South Africa;

    Environmental and Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, South Africa;

    Environmental and Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, South Africa;

    Department of Ecology and Resource Management, School of Environmental Studies, University of Venda, Thohoyandou, South Africa;

    Consulting Environmental Catalysis, Erlangen, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hydroxy sodalite; coal fly ash; ageing process; hydrothermal synthesis; brine solution;

    机译:羟基方钠石粉煤灰老化过程水热合成盐溶液;

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