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Hu M, Li Z, Huang X, Chen M, Hu ZT, Tang S, Chou IM, Pan Z, Wang Q, Wang J. Catalytic supercritical water oxidation of o-chloroaniline over Ru/rGO: Reaction variables, conversion pathways and nitrogen distribution. CHEMOSPHERE 2023; 333:138907. [PMID: 37169091 DOI: 10.1016/j.chemosphere.2023.138907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/22/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
To ascertain the reaction variables on o-chloroaniline (o-ClA) mineralization, total nitrogen (TN) removal rate, and N-species distribution, o-ClA was subjected to catalytic supercritical water oxidation (CSCWO) in a fused quartz tube reactor (FQTR). The findings demonstrated that when the temperature, reaction time, and excess oxidant were 400 °C, 90 min, and 150%, respectively, the mineralization rate of o-ClA could reach more than 95%. Moreover, potential degradation pathways of o-ClA in supercritical water oxidation (SCWO) was proposed according to the GC-MS results. TN removal rate is significantly impacted by Ru/rGO, despite the fact that its catalytic effect on the mineralization of o-ClA was not particularly noteworthy. Compared with no catalyst, the TN removal rate of o-ClA obviously increased from 44.1% to 90.3% at 400 °C, 10 wt% Ru loading, 90 min and 200% excess oxidant. In addition, N-species distribution in SCWO and CSCWO were also investigated. Results indicated that the Ru/rGO catalyst could accelerate the oxidation of ammonia-N and convert it to nitrate-N, promoting N2 generation. Finally, the possible N transformation pathway in CSCWO of o-ClA was proposed. As a result, this work offers fundamental information about o-ClA catalytic oxidation removal in the SCWO process.
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Affiliation(s)
- Mian Hu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Zhibing Li
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Xiaotong Huang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Meiqi Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Zhong-Ting Hu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Suqin Tang
- Hangzhou Environmental Group Co., Ltd, Zhejiang, China
| | - I-Ming Chou
- CAS Key Laboratory of Experimental Study Under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, Hainan, China
| | - Zhiyan Pan
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Qi Wang
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
| | - Junliang Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China.
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Vaiano V, De Marco I. Removal of Azo Dyes from Wastewater through Heterogeneous Photocatalysis and Supercritical Water Oxidation. SEPARATIONS 2023. [DOI: 10.3390/separations10040230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Azo dyes are synthetic organic dyes used in the textile, leather, and paper industries. They pose environmental problems due to their toxic and persistent nature. The toxicity is due to the presence of azo groups in the dye molecule that can break down into aromatic amines, which are highly toxic to aquatic organisms and humans. Various treatment methods have been developed to remove azo dyes from wastewater. Conventional wastewater treatments have some drawbacks, such as high operating costs, long processing times, generation of sludge, and the formation of toxic by-products. For these reasons, a valid alternative is constituted by advanced oxidation processes. Good results have been obtained using heterogeneous photocatalysis and supercritical water oxidation. In the former method, a photocatalyst is in contact with wastewater, a suitable light activates the catalyst, and generated reactive oxygen species that react with pollutants through oxidative reactions to their complete mineralization; the latter involves pressurizing and heating wastewater to supercritical conditions in a reactor vessel, adding an oxidizing agent to the supercritical water, and allowing the mixture to react. In this review paper, works in the literature that deal with processing wastewater containing azo dyes through photocatalysts immobilized on macroscopic supports (structured photocatalysts) and the supercritical water oxidation technique have been critically analyzed. In particular, advancement in the formulation of structured photocatalysts for the degradation of azo dyes has been shown, underlying different important features, such as the type of support for the photoactive phase, reactor configuration, and photocatalytic efficiency in terms of dye degradation and photocatalyst stability. In the case of supercritical water oxidation, the main results regarding COD and TOC removal from wastewater containing azo dyes have been reported, taking into account the reactor type, operating pressure, and temperature, as well as the reaction time.
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Chen Z, Zheng Z, He C, Liu J, Zhang R, Chen Q. Oily sludge treatment in subcritical and supercritical water: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 433:128761. [PMID: 35364539 DOI: 10.1016/j.jhazmat.2022.128761] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/08/2022] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
Oily sludge, an inherent byproduct of the petroleum industry, presents dual characteristics of petroleum resources and hazardous waste. Owing to the unique physicochemical properties of sub-/supercritical water, hydrothermal technologies have been increasingly used for oily sludge treatment. This review is the first to focus on oily sludge treatment using sub-/supercritical water. Eight hydrothermal technologies used for different purposes are summarized herein: pressurized hot water extraction (PHWE) for hydrocarbon separation, thermal hydrolysis (TH) for dewaterability improvement, hydrothermal carbonization (HTC) for hydrochar production, wet air oxidation (WAO) for biodegradability improvement, hydrothermal liquefaction (HTL) for bio-oil production, supercritical water upgrading (SCWU) for light oil production, supercritical water oxidation (SCWO) for complete degradation, and supercritical water gasification (SCWG) for H2-rich syngas production. Moreover, a general reaction pathway for sub-/supercritical water treatment of oily sludge is presented, with a particular focus on the chemical mechanism at temperatures above 350 °C. Lastly, two reaction maps are included to illustrate the reaction pathways of two groups of identifiable model compounds in oily sludge: aliphatic and aromatic hydrocarbons. This review provides detailed information that can promote a better understanding of various hydrothermal technologies, a guideline for selecting the suitable hydrothermal process for a particular oily sludge, and recommendations for further researches.
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Affiliation(s)
- Zhong Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China.
| | - Zhijian Zheng
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
| | - Chunlan He
- Chongqing Institute for Food and Drug Control, Chongqing 401120, China
| | - Jumei Liu
- School of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Rui Zhang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Qiao Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China.
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García-Jarana MB, Casademont P, Sánchez-Oneto J, Portela JR, Martínez de la Ossa EJ. Hybridization of supercritical water oxidation and gasification processes at pilot plant scale. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Analysis of the Energy Flow in a Municipal Wastewater Treatment Plant Based on a Supercritical Water Oxidation Reactor Coupled to a Gas Turbine. Processes (Basel) 2021. [DOI: 10.3390/pr9071237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Biological municipal wastewater treatments lead to high sludge generation and long retention times, and the possibilities for recovery of the energy content of the input waste stream are very limited due to the low operating temperature. As an alternative, we propose a sequence of exclusively physicochemical, non-biological stages that avoid sludge production, while producing high-grade energy outflows favoring recovery, all in shorter times. Ultrafiltration and evaporation units provide a front-end concentration block, while a supercritical water oxidation reactor serves as the main treatment unit. A new approach for energy recovery from the effluent of the reactor is proposed, based on its injection in a gas turbine, which presents advantages over simpler direct utilization methods from operational and efficiency points of view. A process layout and a numerical simulation to assess this proposal have been developed. Results show that the model process, characterized with proven operating parameters, found a range of feasible solutions to the treatment problem with similar energy costs, at a fast speed, without sludge production, while co-generating the municipality’s average electricity consumption.
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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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Combined Gasification-Oxidation System for Waste Treatment with Supercritical Water: LCA and Performance Analysis. SUSTAINABILITY 2020. [DOI: 10.3390/su13010082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In this study the environmental performance of a first-of-its-kind integrated process based on supercritical water gasification and oxidation (SCW-GcO), was evaluated using life cycle assessment (LCA). The process was applied to the treatment of carbon black and used oil as model wastes. Mass and energy balances were performed using Aspen Plus, and the environmental assessment was carried out through SimaPro. A “from cradle to grave” approach was chosen for the analysis, considering impact categories such as climate change, ozone depletion, human toxicity, particulate matter, land use, resource depletion, and other relevant indicators. The environmental profile of the SCW-GcO process was compared to other technologies for the treatment of dangerous wastes, solvent mixtures, and exhaust mineral oils by using the Ecoinvent database. It is shown that SCW-GcO allows for reduced impacts in different categories and the obtention of a favorable positive life cycle energy balance, achieving good environmental performance.
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Li J, Wang S, Li Y, Jiang Z, Xu T, Zhang Y. Supercritical water oxidation and process enhancement of nitrogen-containing organics and ammonia. WATER RESEARCH 2020; 185:116222. [PMID: 32739698 DOI: 10.1016/j.watres.2020.116222] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/28/2020] [Accepted: 07/22/2020] [Indexed: 06/11/2023]
Abstract
Supercritical water oxidation (SCWO), as a promising technology for treating organic wastewater and sludge, has attracted the attention of many scholars. Nitrogen-containing organics are refractory substances that widely exist in industrial waste, and their effective degradation is of great significance to the environment. In this paper, the treatment effects, reaction kinetics, and migration and transformation pathways of various nitrogen-containing organics (amino group, nitro group, mixed group, and nitrogen heteroatom) under SCWO conditions are summarized, and the influences of the reaction temperature, oxidant type and concentration, residence time, and initial concentration of organics on the degradation of organics are also discussed. NH3-N is the primary intermediate product produced during the oxidation process of the amino group and nitrogen heteroatom organics, and the further degradation of NH3-N is the limiting step for the whole reaction. This paper focuses on the relevant strengthening technologies used to enhance the degradation of NH3-N, including heterogeneous catalytic oxidation with reactor wall or metal oxides; co-oxidation with auxiliary fuels such as methanol, ethanol, isopropanol, and glycol; strong oxidation with NO3- or NO2-; and segmented oxidation by multi-injection of oxidants or fuels. In addition, in order to achieve the complete removal of NH3-N and COD synergistically under relatively mild SCWO conditions, avoid the formation of NOx, NO3-, and NO2-, and convert organic nitrogen into environmentally friendly products such as N2 and N2O, further research requirements and challenges are introduced.
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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, 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, 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, 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, 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, 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, 28 Xianning West Road, Xi'an 710049, China
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Tang X, Zheng Y, Liao Z, Wang Y, Yang J, Cai J. A review of developments in process flow for supercritical water oxidation. CHEM ENG COMMUN 2020. [DOI: 10.1080/00986445.2020.1783537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- XingYing Tang
- School of Marine Sciences, Guangxi Key Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, China
| | - YouChang Zheng
- School of Marine Sciences, Guangxi Key Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, China
| | - ZeQin Liao
- School of Marine Sciences, Guangxi Key Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, China
| | - YingHui Wang
- School of Marine Sciences, Guangxi Key Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, China
| | - JianQiao Yang
- School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Jianjun Cai
- School of Architecture and Traffic, Guilin University of Electronic Technology, Guilin, P.R. China
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Benmakhlouf N, Outili N, Sánchez-Oneto J, Portela JR, Meniai AH. Modeling and simulation of hydrothermal oxidation of cutting oil in supercritical water. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2020-0047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractSupercritical water oxidation may be used as waste treatment technique that consists of oxidizing organic and inorganic matter using water at supercritical conditions. It was developed as an alternative technique in order to limit the risks of secondary pollution. The purpose of this study is the development of simulation tools in stationary state in supercritical water oxidation (SCWO) tubular reactor which has been numerically investigated basing on using a two-dimensional modeling approach applying the k-ε turbulence model, and on the international association for the properties of water and steam formulation (IAPWS-IF97). A Multiphysics simulation using Comsol Multiphysics 5.2 software for the supercritical water oxidation of “cutting oil Biocut 35” as a pollutant is reported. First, the heat transfer coefficient was estimated and the obtained temperature and species concentration profiles were compared to experimental data where a quite good agreement was obtained as confirmed by the acceptable coefficient of determination value. Finally, once the used model was validated, numerical simulations were performed to describe the behavior of the reactor investigating the effects of operating conditions such as temperature, pollutant feed concentration and reactor inlet flow rate, on dependent variables like outlet temperature, chemical oxygen demand removal (COD) and the highest temperature reached inside the reactor. This last parameter was considered in the study to take into account the operation safety. The significance of the studied factors and their interactions were quantified and analyzed by means of the full factorial design of experiment (DOE). The results showed that the effect of initial temperature was the most important for the three responses, followed by the feed concentration then to a lesser extent the flow rate. The effect of initial temperature was positive for outlet temperature, maximal temperature and cutting oil removal. The interaction temperature-feed concentration was the only significant one for the COD removal and the maximal temperature. The results defined an operation safety zone of the SCWO reactor based on the superposition of the three studied dependent variables and imposed constraints on the inside reactor temperature and the pollutant outlet concentration.
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Affiliation(s)
- Nadjiba Benmakhlouf
- Process Engineering Faculty, Laboratory of Environmental Processes Engineering (LIPE), Constantine 3 University, Constantine, Algeria
| | - Nawel Outili
- Process Engineering Faculty, Laboratory of Environmental Processes Engineering (LIPE), Constantine 3 University, Constantine, Algeria
| | - Jezabel Sánchez-Oneto
- Department of Chemical Engineering and Food Technology, Laboratory of Analysis and Design of Supercritical Fluid Processes, Cádiz University, Cádiz, Spain
| | - Juan Ramon Portela
- Department of Chemical Engineering and Food Technology, Laboratory of Analysis and Design of Supercritical Fluid Processes, Cádiz University, Cádiz, Spain
| | - Abdeslam Hassen Meniai
- Process Engineering Faculty, Laboratory of Environmental Processes Engineering (LIPE), Constantine 3 University, Constantine, Algeria
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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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Review on an Advanced Combustion Technology: Supercritical Hydrothermal Combustion. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10051645] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Supercritical hydrothermal combustion, a new and promising homogeneous combustion technology with a wide range of application scenarios and broad development prospects, provides creative ideas and means for the enhanced degradation of organic wastes, hydrothermal spallation drilling, thermal recovery of heavy oil, etc. This technology is elaborated upon in five parts: (1) introducing the main devices including semi-batch reactor and continuous reactor to study the hydrothermal flame in accordance with research institutions, (2) presenting the research status of related numerical simulation from the angles of reaction kinetics and flow-reaction, (3) summarizing the characteristics of hydrothermal flame and combustion by five key parameters, (4) dividing up ignition process and explaining ignition mechanism from the perspectives of critical physical properties of water and heat transfer and mixing conditions, (5) discussing and forecasting its industrial applications including hydrothermal spallation drilling, the thermal recovery of heavy oil, the clean conversion and utilization of coal-based fuel, and the harmless treatment of pollutants. By and large, this paper analyzed in detail everything from experimental equipment to industrial applications, from combustion characteristics to ignition mechanisms, and from summary conclusions to prospect prediction. In the end, herein is summarized a couple of existing paramount scientific and technical obstacles in hydrothermal combustion. Further significant studies in the future should include excellent reactors, advanced monitoring techniques, and powerful computational fluid dynamics.
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Yang J, Wang S, Li Y, Zhang Y, Xu D. Novel design concept for a commercial-scale plant for supercritical water oxidation of industrial and sewage sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:131-140. [PMID: 30579001 DOI: 10.1016/j.jenvman.2018.11.142] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/30/2018] [Accepted: 11/30/2018] [Indexed: 06/09/2023]
Abstract
Supercritical water oxidation (SCWO) is a promising chemical technology for organic waste water and sludge treatment. Our team has successfully constructed the first pilot-scale SCWO plant in China, and the design concept for our first commercial-scale plant is reported in this paper. The challenges that hinder the commercial development of SCWO are introduced, including corrosion, plugging, high investment and operating costs. Some important lab-scale and pilot-scale experimental results are shown, and some key design parameters for the commercial plant are proposed. The technological process, specialized equipment design and new system flowsheet are described objectively. Moreover, an estimate of the equipment investment and operating costs of this commercial plant is carried out, and a comparison is made with other commercial sludge SCWO plants. This information is valuable for guiding how to best design commercial SCWO plants for the treatment of sludge and other feedstocks including solid particles.
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Affiliation(s)
- Jianqiao Yang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, PR China
| | - Shuzhong Wang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, PR China.
| | - Yanhui Li
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, PR China
| | - Yan Zhang
- Shaanxi Key Laboratory of Land Consolidation, School of Earth Science and Resources, Chang'an University, Middle Section of Nan Erhuan Road, Xi'an, 710064, PR China
| | - Donghai Xu
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, PR China
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Zhang J, Wang S, Ren M, Lu J, Chen S, Zhang H. Effect Mechanism of Auxiliary Fuel in Supercritical Water: A Review. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05696] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jie Zhang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
| | - Shuzhong Wang
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering of Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Mengmeng Ren
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering of Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Jinling Lu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
| | - Senlin Chen
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
| | - Huamin Zhang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
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Energy Consumption and Economic Analyses of a Supercritical Water Oxidation System with Oxygen Recovery. Processes (Basel) 2018. [DOI: 10.3390/pr6110224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oxygen consumption is one of the factors that contributes to the high treatment cost of a supercritical water oxidation (SCWO) system. In this work, we proposed an oxygen recovery (OR) process for an SCWO system based on the solubility difference between oxygen and CO2 in high-pressure water. A two-stage gas–liquid separation process was established using Aspen Plus software to obtain the optimized separation parameters. Accordingly, energy consumption and economic analyses were conducted for the SCWO process with and without OR. Electricity, depreciation, and oxygen costs contribute to the major cost of the SCWO system without OR, accounting for 46.18, 30.24, and 18.01 $·t−1, respectively. When OR was introduced, the total treatment cost decreased from 56.80 $·t−1 to 46.17 $·t−1, with a reduction of 18.82%. Operating cost can be significantly reduced at higher values of the stoichiometric oxygen excess for the SCWO system with OR. Moreover, the treatment cost for the SCWO system with OR decreases with increasing feed concentration for more reaction heat and oxygen recovery.
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Yang B, Cheng Z, Yuan T, Shen Z. Denitrification of ammonia and nitrate through supercritical water oxidation (SCWO): A study on the effect of NO3−/NH4+ ratios, catalysts and auxiliary fuels. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.03.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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18
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Benjumea J, Sánchez-Oneto J, Portela J, Jiménez-Espadafor F, Martínez de la Ossa E. Low power static-heating start-up procedure for supercritical water oxidation plants. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.01.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li Q, Li F, Meng A, Tan Z, Zhang Y. Thermolysis of scrap tire and rubber in sub/super-critical water. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 71:311-319. [PMID: 29102354 DOI: 10.1016/j.wasman.2017.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 10/12/2017] [Accepted: 10/12/2017] [Indexed: 06/07/2023]
Abstract
The rapid growth of waste tires has become a serious environmental issue. Energy and material recovery is regarded as a promising use for waste tires. Thermolysis of scrap tire (ST), natural rubber (NR), and styrene-butadiene rubber (SBR) was carried out in subcritical and supercritical water using a temperature-pressure independent adjustable batch tubular reactor. As a result, oil yields increased as temperature and pressure increased, and they reached maximum values as the state of water was near the critical point. However, further increases in water temperature and pressure reduced the oil yields. The maximum oil yield of 21.21% was obtained at 420 °C and 18 MPa with a reaction time of 40 min. The relative molecular weights of the chemicals in the oil products were in the range of 70-140 g/mole. The oil produced from ST, NR, and SBR contained similar chemical compounds, but the oil yield of SR was between those of NR and SBR. The oil yield from thermolysis of subcritical or supercritical water should be further improved. The main gaseous products, including CH4, C2H2, C2H4, C2H6, and C3H8, increased with reaction time, temperature, and pressure, whereas the solid residues, including carbon black and impurities, decreased. These results provide useful information to develop a sub/super-critical water thermolysis process for energy and material regeneration from waste tires.
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Affiliation(s)
- Qinghai Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China; Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Tsinghua University, Beijing 100084, PR China.
| | - Fuxin Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China
| | - Aihong Meng
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China
| | - Zhongchao Tan
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China; Department of Mechanical & Mechatronics Engineering, University of Waterloo, Ontario N2L 3G1, Canada; Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Tsinghua University, Beijing 100084, PR China
| | - Yanguo Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China; Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Tsinghua University, Beijing 100084, PR China.
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Yang J, Wang S, Tang X, Wang Y, Li Y. Effect of low oxygen concentration on the oxidation behavior of Ni-based alloys 625 and 825 in supercritical water. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.07.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Wenhu Z, Dejin W, Ruoyu F, Feng L. Studies on affecting factors and mechanism of oily wastewater by wet hydrogen peroxide oxidation. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.08.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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23
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Al-Duri B, Alsoqyiani F, Kings I. Supercritical water oxidation (SCWO) for the removal of N-containing heterocyclic hydrocarbon wastes. Part I: Process enhancement by addition of isopropyl alcohol. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.05.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Chen H, Wang G, Xu Y, Chen Z, Yin F. Application of red mud as both neutralizer and catalyst in supercritical water oxidation (SCWO) disposal of sewage sludge. RSC Adv 2016. [DOI: 10.1039/c6ra07458h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Red mud was used in the supercritical water oxidation (SCWO) disposal of sewage sludge, not only as a neutralizer for acidic substances produced in situ, but also as a catalyst for decomposition of pollutants.
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Affiliation(s)
- Hongzhen Chen
- Environmentally-Benign Chemical Process Research Center
- Chongqing Institute of Green and Intelligent Technology (CIGIT)
- Chinese Academy of Sciences
- Chongqing
- P. R. China
| | - Guangwei Wang
- Environmentally-Benign Chemical Process Research Center
- Chongqing Institute of Green and Intelligent Technology (CIGIT)
- Chinese Academy of Sciences
- Chongqing
- P. R. China
| | - Yuanjian Xu
- Environmentally-Benign Chemical Process Research Center
- Chongqing Institute of Green and Intelligent Technology (CIGIT)
- Chinese Academy of Sciences
- Chongqing
- P. R. China
| | - Zhong Chen
- Environmentally-Benign Chemical Process Research Center
- Chongqing Institute of Green and Intelligent Technology (CIGIT)
- Chinese Academy of Sciences
- Chongqing
- P. R. China
| | - Fengjun Yin
- Environmentally-Benign Chemical Process Research Center
- Chongqing Institute of Green and Intelligent Technology (CIGIT)
- Chinese Academy of Sciences
- Chongqing
- P. R. China
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Zhang J, Wang S, Xu D, Guo Y, Ren M, Lu J. Kinetics study on hydrothermal combustion of methanol in supercritical water. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2015.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Jing G, Luan M, Chen T. Wet peroxide oxidation of oilfield sludge. ARAB J CHEM 2015. [DOI: 10.1016/j.arabjc.2011.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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27
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Queiroz J, Bermejo M, Mato F, Cocero M. Supercritical water oxidation with hydrothermal flame as internal heat source: Efficient and clean energy production from waste. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2014.09.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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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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30
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Numerical study of the influence of geometrical and operational parameters in the behavior of a hydrothermal flame in vessel reactors. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.03.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Dong X, Wang Y, Li X, Yu Y, Zhang M. Process Simulation of Laboratory Wastewater Treatment via Supercritical Water Oxidation. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4044339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiuqin Dong
- Key Laboratory for Green Chemical Technology of Ministry of Education, R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
| | - Yaqi Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
| | - Xuqing Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
| | - Yingzhe Yu
- Key Laboratory for Green Chemical Technology of Ministry of Education, R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
| | - Minhua Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
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García-Jarana M, Kings I, Sánchez-Oneto J, Portela JR, Al-Duri B. Supercritical water oxidation of nitrogen compounds with multi-injection of oxygen. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.04.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Vadillo V, Sánchez-Oneto J, Portela JR, Martínez de la Ossa EJ. Problems in Supercritical Water Oxidation Process and Proposed Solutions. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400156c] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Violeta Vadillo
- Department of Chemical Engineering
and Food Technology, Faculty of Sciences, Agro-food International
Excellence Campus CeiA3, University of Cádiz, 11510 Puerto Real, Spain
| | - Jezabel Sánchez-Oneto
- Department of Chemical Engineering
and Food Technology, Faculty of Sciences, Agro-food International
Excellence Campus CeiA3, University of Cádiz, 11510 Puerto Real, Spain
| | - Juan Ramón Portela
- Department of Chemical Engineering
and Food Technology, Faculty of Sciences, Agro-food International
Excellence Campus CeiA3, University of Cádiz, 11510 Puerto Real, Spain
| | - Enrique J. Martínez de la Ossa
- Department of Chemical Engineering
and Food Technology, Faculty of Sciences, Agro-food International
Excellence Campus CeiA3, University of Cádiz, 11510 Puerto Real, Spain
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34
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Fedyaeva ON, Vostrikov AA. Disposal of hazardous organic substances in supercritical water. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2013. [DOI: 10.1134/s1990793112070044] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Design of the first pilot scale plant of China for supercritical water oxidation of sewage sludge. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2011.06.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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36
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Vadillo V, García-Jarana MB, Sánchez-Oneto J, Portela JR, Martínez de la Ossa EJ. Simulation of Real Wastewater Supercritical Water Oxidation at High Concentration on a Pilot Plant Scale. Ind Eng Chem Res 2011. [DOI: 10.1021/ie201625y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Violeta Vadillo
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain
| | - M. Belén García-Jarana
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain
| | - Jezabel Sánchez-Oneto
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain
| | - Juan R. Portela
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain
| | - Enrique J. Martínez de la Ossa
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain
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38
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Loppinet-Serani A, Aymonier C, Cansell F. Current and foreseeable applications of supercritical water for energy and the environment. CHEMSUSCHEM 2008; 1:486-503. [PMID: 18702145 DOI: 10.1002/cssc.200700167] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
It is crucial to develop economical and energy-efficient processes for the sustainable transformation of biomass into fuels and chemicals. In this context, supercritical water biomass valorization (SCBV) processes are an alternative way to produce biogas, biofuels, and valuable chemicals. Supercritical water technology has seen much progress over the last fifteen years and an industrial application has merged: the supercritical water oxidation of wastes. The evolution from lab-scale to pilot-scale facilities has provided data on reaction mechanisms, kinetics, modeling, and reactor technology as well as an important know-how, which can now be exploited to use the reactivity in supercritical water to transform biomass into gases (CO, H(2), CO(2), CH(4), and N(2)) or into liquids (liquid fuel and valuable chemicals) with the supercritical water biomass gasification and liquefaction processes, respectively. This Review highlights the potential of SCBV processes to transform biomass into gas and liquid energy sources and highlights the developments that are still necessary to push this technology onto the market.
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Affiliation(s)
- Anne Loppinet-Serani
- Institut de Chimie de la Matière Condensée de Bordeaux ICMCB-CNRS and ENSCPB, Université Bordeaux I, 87 Avenue Dr A. Schweitzer, PESSAC Cedex, France.
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39
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Bermejo M, Martín A, Cocero M. Application of the Anderko–Pitzer EoS to the calculation of thermodynamical properties of systems involved in the supercritical water oxidation process. J Supercrit Fluids 2007. [DOI: 10.1016/j.supflu.2007.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Marias F, Mancini F, Cansell F, Mercadier J. Hydrothermal oxidation treatment of solid particles between 250 and 350°C: Modelling and experiments. J Supercrit Fluids 2007. [DOI: 10.1016/j.supflu.2007.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Sánchez-Oneto J, Portela JR, Nebot E, Martínez de la Ossa E. Hydrothermal oxidation: application to the treatment of different cutting fluid wastes. JOURNAL OF HAZARDOUS MATERIALS 2007; 144:639-44. [PMID: 17363160 DOI: 10.1016/j.jhazmat.2007.01.088] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The aim of this work is to present the application of the hydrothermal oxidation in supercritical conditions, also named supercritical water oxidation (SCWO) to the treatment of two commercial cutting fluids: Biocut and Servol. Experiments were carried out in a continuous flow system at a constant pressure of 25 MPa, using pure oxygen as oxidant in excess, and different temperatures ranging from 673 to 773 K. Both semi-synthetic cutting fluids are a mixture of several compounds so the efficiency of the oxidation process was followed in terms of the reduction in chemical oxygen demand (COD) and total organic carbon (TOC). A comparison of the results obtained in the study showed that it is possible to apply successfully SCWO for both cutting fluids, obtaining more than 95% for both COD and TOC removal at 773 K. However, the results also show that different residence times are needed to obtain the same percentage of COD or TOC removal depending on the cutting fluid treated, being in all cases Servol easier to oxidize than Biocut. A kinetic model to predict COD and TOC conversion has been proposed for both cutting fluids. A two-parameter mathematical model involving two steps (a fast reaction followed by a slow reaction) was used to describe the Biocut SCWO kinetics and to calculate the kinetic constants.
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Affiliation(s)
- Jezabel Sánchez-Oneto
- Department of Chemical Engineering, Food Technologies and Environmental Technologies, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Spain.
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42
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Anikeev VI, Belobrov NS, Piterkin RN, Prosvirnin RS, Zvolsky LS, Mikenin PE, Yermakova A. Results of Testing the Plant for Supercritical Water Oxidation of Nitroglycerin and Diethylene Glycol Dinitrate. Ind Eng Chem Res 2006. [DOI: 10.1021/ie060918k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- V. I. Anikeev
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - N. S. Belobrov
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - R. N. Piterkin
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - R. Sh. Prosvirnin
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - L. S. Zvolsky
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - P. E. Mikenin
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
| | - A. Yermakova
- Boreskov Institute of Catalysis, Novosibirsk, Russia, and Federal Research and Production Center “Altai”, Biysk, Russia
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44
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Kinetic analysis for decomposition of 2,4-dichlorophenol by supercritical water oxidation. KOREAN J CHEM ENG 2005. [DOI: 10.1007/bf02705669] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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46
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Calvo L, Vallejo D. Formation of Organic Acids during the Hydrolysis and Oxidation of Several Wastes in Sub- and Supercritical Water. Ind Eng Chem Res 2002. [DOI: 10.1021/ie020441m] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lourdes Calvo
- Supercritical Water Oxidation Projects, Environmental and Water Resource Engineering Program, University of Texas at Austin, Austin, Texas 78758
| | - David Vallejo
- Supercritical Water Oxidation Projects, Environmental and Water Resource Engineering Program, University of Texas at Austin, Austin, Texas 78758
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