利用污泥制备活性炭及其吸附特性的研究进展

发布时间：2018-03-26 08:10

本文选题：污泥　切入点：活性炭　出处：《化工进展》2017年10期

【摘要】：污泥作为城市、工业活动的副产物影响人们生活和生态环境,而以污泥制备污泥活性炭的方式进行资源化利用,使得污泥活性炭作为一种低成本吸附剂可以有效吸附废水中污染物以及脱硫脱硝,从而达到"以污治污"的效果。本文从污泥活性炭的制备方法、吸附特性和吸附反应模型3个方面对污泥制备活性炭研究进展进行综述,着重讨论了污泥来源、炭化方式、活化方式以及添加剂种类等因素对于污泥活性炭制备的影响,阐述了其对于金属离子、染料、抗生素等有害物的吸附特性,在此基础上,本文又列举了近些年污泥基活性炭在吸附过程中对于吸附等温模型以及吸附动力学模型的拟合情况。同时本文指出目前研究局限于制备追求比表面积的活性炭,而且该技术仍存在技术工艺成本较高的问题以及二次污染风险,对研究方向作出展望,即应结合根据不同的污泥来源,选取合适的制备方式以及应用领域。
[Abstract]:Sludge, as a by-product of industrial activities, affects people's living and ecological environment. Sludge activated carbon as a low cost adsorbent can effectively adsorb pollutants in wastewater and desulphurization and denitrification so as to achieve the effect of "sewage treatment". The research progress of activated carbon preparation from sludge was reviewed from three aspects: adsorption characteristics and adsorption reaction model. The effects of sludge sources, carbonization methods, activation methods and additives on the preparation of activated carbon from sludge were discussed. The adsorption characteristics of metal ions, dyes, antibiotics and other harmful substances are described. In this paper, the adsorption isothermal model and adsorption kinetics model of activated carbon based on sludge in recent years are also listed. At the same time, it is pointed out that the current research is limited to the preparation of activated carbon with specific surface area. Moreover, the technology still has the problem of high technology cost and the risk of secondary pollution. The research direction is prospected, that is, the suitable preparation methods and application fields should be selected according to different sludge sources.
【作者单位】：华中科技大学能源与动力工程学院煤燃烧国家重点实验室;华中科技大学能源与动力工程学院新能源科学与工程系;深圳市水务(集团)有限公司;
【基金】：国家自然科学基金(51661145010,51576088) 深圳市科技计划(JSGG 20160229173603657)项目
【分类号】：X703

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