天然水镁石及其煅烧产物对臭氧化降解水中苯酚的效果研究

为有效去除工业废水中的苯酚,本文结合臭氧化技术,引入天然碱性矿物水镁石及其煅烧产物氧化镁作为催化剂,进行了催化臭氧化处理水中苯酚的研究。结果表明,加入的两种碱性矿物对臭氧化降解苯酚都有显著的催化效果。同时,碱性矿物的加入明显的改变了臭氧化过程中水体的pH值,从而对促进苯酚的降解起到了主导作用;除此之外,吸附实验及改变催化剂加入量的实验表明,碱性矿物表面对羧酸的吸附作用在一定程度上也导致苯酚降解效率的提高。本文工作为臭氧化降解水中苯酚提供了一种简便实用的处理方法,同时为天然水镁石矿物找到了新的应用领域。

The Decomposition of Phenol in Water Under Catalytic Ozonation with Natural Brucite and Magnesia

Recently, more and more attentions have been paid on the researches on the decomposition of phenol which is an important organic pollutant produced in various kinds of industries. This paper has introduced natural brucite and its calcined products as catalysts under ozonation for decomposing the phenol in waters. The experimental results show that both brucite and magnesia have remarkable catalysis effect on the degradation of phenol in waters. The obvious variation of pH values in waters, which was caused by the addition of alkaline minerals, has dominantly catalyzed the decomposition of phenol in waters. In addition, The adsorption experiment and the experiment of content variation of adding catalysts show that the adsorption of carboxylic acids by surfaces of alkali minerals has also increased the efficiency of phenol decomposition in some extent. This paper has provided a convenient and practicable method for decomposing the phenol in waters under ozonation, and also developed a new application field for the natural brucite.