节点文献
粉煤灰制备沸石的技术及应用现状
Development and Research Status of Zeolite Synthesized from Coal Fly Ash
【摘要】 粉煤灰(CFA)是发电厂在燃煤过程中形成的固体废弃物,其大量堆积造成的环境污染以及可回收资源浪费问题亟需解决。在粉煤灰众多再利用方式中,制备高吸附性能的沸石是实现粉煤灰高附加值应用的有效途径之一。来源不同的粉煤灰理化性质差异较大,因此,制备沸石材料之前需采取不同的方法对其进行活化预处理。本文概述了沸石合成工艺之间的关系及其优缺点,并进一步阐述了粉煤灰基沸石在废水处理、气体吸附分离以及土壤改良等方面的应用前景。从粉煤灰预处理、沸石合成方法、产物应用领域等三个方面对粉煤灰制备沸石的整体发展趋势进行了展望。
【Abstract】 Coal fly ash(CFA) is an industrial by-product derived from coal combustion in thermal power plants.The large-scale accumulation of CFA has caused serious problems,such as environmental pollution and waste of recyclable matters,to which the solutions are of crucial urgency.Among the various ways of reusing CFA resources,preparation of zeolite with high adsorption performance is the effective one to achieve high value-added application.The physicochemical properties of CFA from different sources vary widely,therefore,different methods should be taken to pretreat CFA before zeolites are prepared.This paper introduces the relationship between zeolite synthesis processes and their advantages and disadvantages,and further elaborates the application prospects of CFA-based zeolites in wastewater treatment,gas adsorption and separation,soil improvement,etc.The paper also offers a prospective discussion about future development trend of zeolites production using CFA,from the perspectives of CFA pretreatment,zeolite synthesis method,and product applications.
【Key words】 coal fly ash; zeolite; pretreatment; green synthesis; heavy metal; adsorption; remediation;
- 【文献出处】 材料导报 ,Materials Reports , 编辑部邮箱 ,2024年07期
- 【分类号】X773;TQ424.25
- 【下载频次】382