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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 26 - 33 (8page)
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In this paper, MnO₂ catalyst were firstly prepared and modified by four kinds of anionic precursors (i.e., NO₃⁻, AC⁻, SO₄<SUP>2-</SUP> and Cl-) through redox precipitation method. After that, bio-treated coking wastewater (BTCW) was prepared and employed as targeted pollutants to investigate the catalytic ozonation performance of prepared-MnO₂ catalyst was investigated and characterized by the removal efficiencies and mechanism of the prepared bio-treated coking wastewater (BTCW), which was employed as the targeted pollutants. Specifically, the effects of specific surface area, crystal structure, valence state of Mn element and lattice oxygen content on catalytic activity of MnO₂ materials were characterized by BET, XRD and XPS, respectively. Results showed that COD of BTCW could be removed 47.39% under MnO₂-NO₃⁻ catalyst with 2 h reaction time, which was much higher than that of MnO₂-AC⁻ (3.94%), MnO₂-SO₄<SUP>2-</SUP> (12.42%), MnO₂-Cl⁻ (12.94%) and pure O₃ without catalyst (21.51%), respectively. So, MnO₂-NO₃⁻ presented the highest catalytic performance among these catalysts. The reason may be attributed to a series of better physiochemical properties including the smaller average grain, the larger specific surface area and active groups, more crystal defect and oxygen vacancy, higher relative content of Mn<SUP>3+</SUP> and adsorbed oxygen (O<SUB>ads</SUB>) than that of another three catalysts.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
References
참고문헌 (42)
참고문헌 신청
Kosar HHA. Application of different advanced oxidation processes for the removal of chloroacetic acids using a planar falling film reactor. Chemosphere 2019a;228:377-383.
Pouretedal HR, Hasanali MA. Photocatalytic degradation of some beta-lactam antibiotics in aqueous suspension of ZnS nanoparticles Desalin. Water Treat. 2013;51:2617-2623.
Kosar Hikmat Hama Aziz, Omer KM, Mahyar A, Miessner H, Mueller S, Moeller D. Application of Photocatalytic Falling Film Reactor to Elucidate the Degradation Pathways of Pharmaceutical Diclofenac and Ibuprofen in Aqueous Solutions. Coatings 2019b;9:465-475.
Bello MM, Raman AAA, Asghar A. A review on approaches for addressing the limitations of Fenton oxidation for recalcitrant wastewater treatment. Process Saf. Environ. Prot 2019;126: 119-140.
Hien NT, Nguyen LH, Van HT, et al. Heterogeneous catalyst ozonation of Direct Black 22 from aqueous solution in the presence of metal slags originating from industrial solid wastes. Sep. Purif. Technol. 2020;233:115961.
Pouretedal HR, Hasanali MA. Photocatalytic degradation of some beta-lactam antibiotics in aqueous suspension of ZnS nanoparticles Desalin. Water Treat. 2013;51:2617-2623.
Kosar Hikmat Hama Aziz, Omer KM, Mahyar A, Miessner H, Mueller S, Moeller D. Application of Photocatalytic Falling Film Reactor to Elucidate the Degradation Pathways of Pharmaceutical Diclofenac and Ibuprofen in Aqueous Solutions. Coatings 2019b;9:465-475.
Bello MM, Raman AAA, Asghar A. A review on approaches for addressing the limitations of Fenton oxidation for recalcitrant wastewater treatment. Process Saf. Environ. Prot 2019;126: 119-140.
Hien NT, Nguyen LH, Van HT, et al. Heterogeneous catalyst ozonation of Direct Black 22 from aqueous solution in the presence of metal slags originating from industrial solid wastes. Sep. Purif. Technol. 2020;233:115961.
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