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Purohit AL, Misquith JA, Pinkard BR, Moore SJ, Kramlich JC, Reinhall PG, Novosselov IV. Design of a Small-Scale Supercritical Water Oxidation Reactor. Part II: Numerical Modeling. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00932] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anmol L. Purohit
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - John A. Misquith
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - Brian R. Pinkard
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - Stuart J. Moore
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - John C. Kramlich
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - Per G. Reinhall
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
| | - Igor V. Novosselov
- Mechanical Engineering Department, University of Washington, Seattle, Washington 98195, United States
- University of Washington, Institute for Nanoengineered Systems, Seattle, Washington 98195, United States
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Li J, Wang S, Li Y, Yang C, Xu D, Zhang J, Zhang Y, Xu T. Supercritical water oxidation of glyphosate wastewater. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Li J, Wang S, Li Y, Ren M, Jiang Z, Zhang J, Yang C. Experimental research and commercial plant development for harmless disposal and energy utilization of petrochemical sludge by supercritical water oxidation. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li J, Wang S, Li Y, Wang L, Xu T, Zhang Y, Jiang Z. Supercritical water oxidation of semi-coke wastewater: Effects of operating parameters, reaction mechanism and process enhancement. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:134396. [PMID: 31901680 DOI: 10.1016/j.scitotenv.2019.134396] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/09/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
Semi-coke wastewater is a kind of industrial wastewater with complex composition, high concentration of organic pollutants and high chroma, seriously threatening the ecological environment and requiring to be effectively degraded. Supercritical water oxidation (SCWO), as for a promising environmental technology, was applied to treat semi-coke wastewater in this work. The influences of key operating parameters such as reaction temperature (400-600 °C), oxidation coefficient (1.0-4.0) and residence time (0.5-10 min), the reaction mechanism for organics in semi-coke wastewater and the process enhancement methods like catalytic oxidation and segmented oxidation were systematically investigated. Experimental results showed that the removal efficiency of COD and NH3-N both significantly increased with the increasing of temperature, oxidation coefficient and residence time, the COD removal efficiency and NH3-N removal efficiency could be 99.02% and 63.94% obtained under the condition of 600 °C, 25 MPa, 1.3 times oxidation coefficient and 10 min. The residual organics in liquid products were mainly phenols, ketones, imidazoles, esters and pyridines, which produced from the cyclization and esterification reaction between intermediate products such as alcohols, aldehydes, acids and NH3-N, etc. What's more, NH3-N was proved to have inhibitory effect on the degradation of phenol by generating more stubborn nitrogen-containing compounds with that. Besides, compared with single catalyst, the composite catalyst of MnO2/CeO2 exhibited the highest catalytic activity, which could synergistically degrade 98.52% COD and 67.18% NH3-N under a relatively mild reaction condition (550 °C, 25 MPa, 1.3 times oxidation coefficient, 2 min). Moreover, the segmented oxidation, combining the pre-oxidation in preheater and oxidation in reactor, was firstly observed and analyzed here, could achieve a higher COD removal efficiency with a shorter length of the reactor. The results obtained in this paper proved the technical feasibility and could provide basic data support for the industrialization of semi-coke wastewater treatment by SCWO.
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Affiliation(s)
- Jianna Li
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Shuzhong Wang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China.
| | - Yanhui Li
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China.
| | - Laisheng Wang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Tiantian Xu
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Yishu Zhang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Zhuohang Jiang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
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Zhang S, Zhang Z, Zhao R, Gu J, Liu J, Örmeci B, Zhang J. A Review of Challenges and Recent Progress in Supercritical Water Oxidation of Wastewater. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1262359] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xu D, Wang S, Huang C, Tang X, Guo Y. Transpiring wall reactor in supercritical water oxidation. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2014.02.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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