Formation of nanocrystalline zeolites from industrial waste materials under strong alkaline conditions at short reaction times and low temperatures

在强碱性条件下短反应时间和低温下由工业废料形成纳米晶沸石

• 批准号: 191172577
• 负责人: Professor Dr. Josef-Christian Buhl
• 金额: --
• 依托单位: Institut für Mineralogie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/191172577?language=en
• 关键词: Formation; nanocrystalline; zeolites; industrial; waste

The project deals with the development of new models for the insertion of paper sludge combustion ash and silicate rich filter residues from waste water reconditioning for zeolite synthesis using a low temperature alkaline digestion process. The results, worked out up to now, yield to zeolites LTA and X in a two step reaction process of waste materials digestion followed by gel crystallization. Preparation of the Ca-form of the zeolites under insertion of paper sludge combustion ash was also successful. In contrast, multiphase products were observed under a direct conversion process, but these investigations led to interesting new questions. Answering the question of (1) an influence of the early very short reaction period, (2) an alkaline activation of the starting waste materials at room temperature and (3) the role of the otimal time of admixing aditives like NaAlO2 have to be mentioned as the subject of this present additional research proposal. Three new reaction series are planned and basic knowledge on an optimal alkaline transformation of waste materials into valuable zeolites at only 60°C is expected from the results.

该项目涉及开发新的模型，用于插入造纸污泥燃烧灰和富含硅酸盐的过滤器残留物，这些残留物来自使用低温碱性消化工艺合成沸石的废水再处理。到目前为止的结果是，在废料消化然后凝胶结晶的两步反应过程中产生沸石LTA和X。在造纸污泥燃烧灰的插入下制备Ca形式的沸石也是成功的。相比之下，在直接转化过程中观察到多相产物，但这些研究导致了有趣的新问题。作为本附加研究建议的主题，必须提及以下问题：（1）早期非常短的反应时间的影响，（2）起始废料在室温下的碱性活化和（3）混合添加剂如NaAlO2的最佳时间的作用。计划了三个新的反应系列，预计从结果中可以了解在60°C下将废料最佳碱转化为有价值的沸石的基本知识。

项目成果

Digestion reactions of paper sludge combustion ash in strong alkaline solutions at 60 °C

造纸污泥燃烧灰在60℃强碱性溶液中的消化反应

• DOI: 10.1007/s10163-014-0320-4
• 发表时间: 2016
• 期刊: Journal of Material Cycles and Waste Management
• 影响因子: 3.1
• 作者: Hartmann;Petrov;Rübner;Lindemann
• 通讯作者: Lindemann

Zeolite Synthesis under Insertion of Silica Rich Filtration Residues from Industrial Wastewater Reconditioning

• DOI: 10.4236/aces.2014.42015
• 发表时间: 2014-04
• 期刊: Advances in Chemical Engineering and Science
• 作者: A. Hartmann;V. Petrov;J. Buhl;K. Rübner;M. Lindemann;C. Prinz;A. Zimathies