The synthesis of zeolite LTA from Sudanese clay has been studied by hydrothermal treatment with various sodium hydroxide concentrations. The process for synthesis have been optimized to produce zeolite LTA at economical manner. Also, the chemical composition of clay and synthesized zeolite were investigated and they were analyzed using the X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and X-ray Flourence (XRF). It was found that, the Zeolite LTA was successfully synthesized under controlled conditions (750~(o) C/1h) for the clay calcination, 100~(o)C/2h for the reaction time, temperature and 5 M NaOH for the alkali concentration. The removal capacity for Pb2+ was 99.99 % and for Zn~(2+) was 95.68.
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机译：通过使用各种浓度的氢氧化钠进行水热处理，研究了从苏丹粘土合成沸石LTA的方法。已经优化了合成方法以经济的方式生产沸石LTA。此外，还研究了粘土和合成沸石的化学组成，并使用X射线衍射（XRD），扫描电子显微镜（SEM）和X射线荧光度（XRF）对其进行了分析。结果表明，在控制的条件下（750〜（o）C / 1h）进行粘土煅烧，反应时间为100〜（o）C / 2h，温度为5 M NaOH，可以成功合成沸石LTA。浓度。 Pb2 +的去除能力为99.99％，Zn〜（2+）的去除能力为95.68。
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