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논문 기본 정보

자료유형
학술저널
저자정보
Marzhan Seitovna Kalmakhanova (M.Kh. Dulati Taraz State University) Jose Luis Diaz de Tuesta (Polytechnic Institute of Bragança) Bakytgul Kabykenovna Massalimova (M.Kh. Dulati Taraz State University) Helder Teixeira Gomes (Polytechnic Institute of Bragança)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제25권 제2호
발행연도
2020.4
수록면
186 - 196 (11page)

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초록· 키워드

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Pillared clays with Zr and Fe/Cu/Zr polycations have been prepared from natural clays found in large deposits of Kazakhstan and assessed as catalysts for the catalytic wet peroxide oxidation (CWPO), using 4-nitrophenol (4-NP) as model compound. The performance of the catalysts was followed by measuring the concentration of 4-NP, H₂O₂ and the total organic carbon (TOC), considering C4-NP = 5 g L<SUP>-1</SUP>, CH₂O₂ = 17.8 g L<SUP>-1</SUP>, Ccat = 2.5 g L<SUP>-1</SUP>, initial pH = 3.0 and T = 50°C. At those selected conditions, the pillared clays showed higher activity than natural clays in the CWPO of 4-NP. The conversion of the model pollutant was complete when Fe/Cu/Zr-PILCs were used, with the TOC removal reaching 78.4% after 24 h with the best Fe/Cu/Zr-PILC. The H₂O₂, 4-NP and TOC time-evolution was well described by a kinetic model based on TOC lumps in three blocks, considering the initial TOC (corresponding to 4-NP), the production of oxidizable intermediates and the formation of refractory products.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References

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