一种新型表面改性多孔陶瓷泡沫球用于水溶液中砷的去除

IF 3.1 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Pei-sheng Liu, Guang Cui, Yi-jiao Guo, Jing-he Chen, Zi-xuan Yang
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引用次数: 2

摘要

最近用天然沸石制成了一种可以漂浮在水面上的轻质多孔陶瓷泡沫球。多孔球直径约为5 mm,宏观孔直径约为1 mm。这样的球表面可以被修改,以不同的方式激活,即加载活性氧化铝或脱硅球。研究了两种改性产物对水中有毒离子砷的吸附效果。以天然斜沸石粉为主要原料,采用粉末烧结法制备了多孔陶瓷球。以拟薄水铝石(AlOOH)为主要成分,采用溶胶-凝胶法制备了活性氧化铝负载多孔陶瓷产品。在NaOH溶液中对陶瓷球进行脱硅,也可以使多孔球表面的活性Al原子获得。该脱硅产物虽然不含活性氧化铝,但对砷离子具有良好的吸附活性。有了这种有效的多孔结构,本发明的产品有望在实际应用中具有优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel sort of porous ceramic foam ball with modified surface for arsenic removal from aqueous solution

A sort of lightweight porous ceramic foam ball that can float on the water was recently made from the natural zeolite. The diameters of porous ball and its macroscopic pores are around 5 and 1 mm, respectively. Such ball surface could be modified to activate in different ways, i. e. loading the active alumina or desilicating the ball. Both of modified products have been investigated to adsorb the toxic ion of arsenic (As) in water effectively. This kind of porous ceramic ball was prepared by powder sintering, using natural clinoptilolite powder as the primary raw material. An active-alumina-loaded porous ceramic product was generated by sol-gel method with pseudoboehmite (AlOOH) as the main composition. The active Al atom on the porous ball surface could also be achieved by desilicating the ceramic ball in the NaOH solution. Such a desilicated product exhibited a good activity to adsorb the arsenic ion although carrying no active alumina. With this effective porous structure, the present products can be expected to become practically advantageous.

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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
2879
审稿时长
3.0 months
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