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282 / 2024-03-14 20:30:37
Application of Modified Coal Gasification Slag-based Fenton-like Catalytic Materials for Coal Chemical Wastewater Treatment
fenton-like,coal gasification slag,catalysis,structural modification,water treatment
6、能源资源清洁加工与转化利用 > 8、固废资源综合利用
摘要录用
Xiaoxia Fang / China University of Mining and Technology
Haijun Zhang / China University of Mining and Technology
Advanced oxidation is one of the effective methods to remove difficult-to-degrade organic pollutants from coal chemical wastewater, among which Fenton-like oxidation has been widely concerned by scholars due to its obvious degradation effect, simple process and non-polluting products. As a kind of bulk solid waste, the rich pore structure and excellent specific surface area of coal gasification slag provide a good basis for it to be used as an adsorption material, and at the same time, the mineral composition of coal gasification slag makes it has the potential to be a Fenton-like catalytic material. It was found that the untreated coal gasification slag could remove nearly 50% of the phenol in the treatment of phenol-containing wastewater, in which the adsorption process was absolutely dominant and the catalytic effect was very limited. In order to enhance the catalytic performance of coal gasification slag, it was structurally modified by acid leaching, microwave activation, metal doping, etc. The specific surface area of the modified coal gasification slag-based catalytic material was further increased, and the catalytic effect was significantly improved due to the doping of metal ions, and the removal rate could reach more than 99% under the same conditions. The effective application of modified coal gasification slag-based materials can promote the resourcefulness and materialisation of this solid waste, but there is a phenomenon that metal ions are leached out of the modified coal gasification slag-based catalytic materials during the test, resulting in its weak stability, and how to improve its stability remains to be studied.
重要日期

  • 会议日期

    05月29日

    2024

    至

    06月01日

    2024

  • 05月08日 2024

    初稿截稿日期

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中国矿业大学
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