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Keshri S, Sudha S, Saxena AKS. State-of-the-art review on hydrogen's production, storage, and potential as a future transportation fuel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34098-9. [PMID: 38951393 DOI: 10.1007/s11356-024-34098-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 06/19/2024] [Indexed: 07/03/2024]
Abstract
Global energy consumption is expected to reach 911 BTU by the end of 2050 as a result of rapid urbanization and industrialization. Hydrogen is increasingly recognized as a clean and reliable energy vector for decarbonization and defossilization across various sectors. Projections indicate a significant rise in global demand for hydrogen, underscoring the need for sustainable production, efficient storage, and utilization. In this state-of-the-art review, we explore hydrogen production methods, compare their environmental impacts through life cycle analysis, delve into geological storage options, and discuss hydrogen's potential as a future transportation fuel. Combining electrolysis to make hydrogen and storing it in porous underground materials like salt caverns and geological reservoirs looks like a good way to balance out the variable supply of renewable energy and meet the demand at peak times. Hydrogen is a key component of our sustainable economy, and this article gives a broad overview of the process from production to consumption, touching on technical, economic, and environmental concerns along the way. We have made an attempt in this paper to compile different methods for the production of hydrogen and its storage, the challenges faced by current methods in the manufacturing of hydrogen gas, and the role of hydrogen in the future. This review paper will serve as a very good reference for hydrogen system engineering applications. The paper concludes with some suggestions for future research to help improve the technological efficiency of certain production methods, all with the goal of scaling up the hydrogen economy.
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Affiliation(s)
- Sonanki Keshri
- Department of Chemistry, Jyoti Nivas College Autonomous, Bengaluru, Karnataka, 560095, India.
| | - Suriyanarayanan Sudha
- Department of Chemistry, Jyoti Nivas College Autonomous, Bengaluru, Karnataka, 560095, India
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Dahdouh A, Khay I, Le Brech Y, El Maakoul A, Bakhouya M. Olive oil industry: a review of waste stream composition, environmental impacts, and energy valorization paths. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:45473-45497. [PMID: 36800088 DOI: 10.1007/s11356-023-25867-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 02/07/2023] [Indexed: 02/18/2023]
Abstract
The olive oil production is a key economic sector for the producing countries, mainly in the Mediterranean region. However, the worldwide increasing oil production led to the generation of huge amounts of wastes detrimental for the environment. Therefore, efficient and sustainable management of olive industry wastes has recently acquired significant interest in the scientific research community. In the actual world energy context, various studies dealt with the valorization of the solid/liquid waste streams obtained from the discontinuous/continuous extraction of olive oil for energy purposes. The application of waste-to-energy treatments to these effluents can turn them out into an important energy resource. This review article presents the main used oil extraction techniques and their related research developments. The characterization of the generated wastes and the factors behind their bad environmental impacts are highlighted. Relevant research works related to biochemical and thermochemical conversion of olive mill wastes are extensively reviewed and discussed in terms of product yields and composition. A recent update of the studies addressing olive industry waste applications for energy production is also given. This investigation revealed a lack of studies in relation to the hydrothermal processing of olive mill wastes. Despite their suitability for this process (e.g., high moisture content), few papers have investigated the hydrothermal conversion of these waste streams. This scientific gap opens a very interesting research direction, which has to be further investigated.
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Affiliation(s)
- Akram Dahdouh
- International University of Rabat, College of Engineering and Architecture, LERMA Lab, 11 100, Sala Al Jadida, Morocco. .,Laboratoire Réactions et Génie des Procédés, CNRS, Université de Lorraine, 1 rue Grandville, 54 000, Nancy, France.
| | - Ismail Khay
- International University of Rabat, College of Engineering and Architecture, LERMA Lab, 11 100, Sala Al Jadida, Morocco
| | - Yann Le Brech
- Laboratoire Réactions et Génie des Procédés, CNRS, Université de Lorraine, 1 rue Grandville, 54 000, Nancy, France
| | - Anas El Maakoul
- International University of Rabat, College of Engineering and Architecture, LERMA Lab, 11 100, Sala Al Jadida, Morocco
| | - Mohamed Bakhouya
- International University of Rabat, College of Engineering and Architecture, LERMA Lab, 11 100, Sala Al Jadida, Morocco
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3
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Eloffy MG, Elgarahy AM, Saber AN, Hammad A, El-Sherif DM, Shehata M, Mohsen A, Elwakeel KZ. Biomass-to-sustainable biohydrogen: insights into the production routes, and technical challenges. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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4
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Evolution of the Olive Oil Industry along the Entire Production Chain and Related Waste Management. ENERGIES 2022. [DOI: 10.3390/en15020465] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The production of olive oil involves the sustainable management of the waste produced along the entire production chain. This review examines the developments regarding cultivation techniques, production technologies, and waste management, highlighting the goals to be achieved and the most reasonable prospects. The results show that cultivation and production technology have evolved to an almost final solution to meet economic feasibility, keeping the oil’s high quality. Continuous horizontal decanters will coexist with traditional mills in many countries with old olive oil production and consumption traditions. High-quality products have conquered markets, especially in the wealthiest countries. At the same time, the exploitation of dried pomace by solvent extraction is increasingly an obsolete practice. However, waste management is still looking for one or a few reasonable solutions that meet modern society’s constraints. The enhancement of some experienced technologies and the full-scale application of emerging technologies and strategies should solve this problem in the short–medium term. A short discussion is reported on the possibility of unifying the nature and the quality of the waste, whatever the olive oil production method is. Furthermore, modern thermochemical treatment for solid wet organic waste disposal is examined and discussed.
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Oily Wastewater Treatment: Overview of Conventional and Modern Methods, Challenges, and Future Opportunities. WATER 2021. [DOI: 10.3390/w13070980] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Industrial developments in the oil and gas, petrochemical, pharmaceutical and food sector have contributed to the large production of oily wastewater worldwide. Oily wastewater pollution affects drinking water and groundwater resources, endangers aquatic life and human health, causes atmospheric pollution, and affects crop production. Several traditional and conventional methods were widely reported, and the advantages and limitations were discussed. However, with the technology innovation, new trends of coupling between techniques, use of new materials, optimization of the cleaning process, and multiphysical approach present new paths for improvement. Despite these trends of improvement and the encouraging laboratory results of modern and green methods, many challenges remain to be raised, particularly the commercialization and the global aspect of these solutions and the reliability to reduce the system’s maintenance and operational cost. In this review, the well-known oily wastewater cleaning methods and approaches are being highlighted, and the obstacles faced in the practical use of these technologies are discussed. A critical review on the technologies and future direction as the road to commercialization is also presented to persevere water resources for the benefit of mankind and all living things.
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Yan M, Su H, Zhou Z, Hantoko D, Liu J, Wang J, Wang R, Kanchanatip E. Gasification of effluent from food waste treatment process in sub- and supercritical water: H 2-rich syngas production and pollutants management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 730:138517. [PMID: 32402957 DOI: 10.1016/j.scitotenv.2020.138517] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/05/2020] [Accepted: 04/05/2020] [Indexed: 05/28/2023]
Abstract
The effluent of food waste (FWE) is generated during food waste treatment process. It contains high organic matter content and is difficult to be efficiently treated. In this study, the sample was collected from a 200 t/d food waste treatment center in Hangzhou, China. Subcritical and supercritical water gasification were employed to decompose and convert FWE into energy. The effects of reaction temperature (300-500 °C), residence time (20-70 min) and activated carbon loading (0.5-3.5 wt%) on syngas production and the remaining pollutants in liquid residue were investigated. It was found that higher reaction temperature and longer residence time favored gasification and pollutant decomposition, resulting in higher H2 production and gasification efficiencies. It is noteworthy that the NH3-N was difficult to be converted and removed under current experimental conditions. The addition of activated carbon was found to increase the gasification efficiency. The highest total gas yield, H2 yield, carbon conversion efficiency, gasification efficiency, total organic carbon removal efficiency and chemical oxygen demand removal efficiency were obtained from gasification at 500 °C for 70 min with 3.5 wt% activated carbon.
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Affiliation(s)
- Mi Yan
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hongcai Su
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhihao Zhou
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dwi Hantoko
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jianyong Liu
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jingyi Wang
- Zhejiang Zheneng Xingyuan Energy Saving Technology Co., Ltd, Hangzhou 310013, China
| | - Runpei Wang
- Hangzhou Environmental Group, Hangzhou Environment Group Co., Ltd, Hangzhou 310000, China
| | - Ekkachai Kanchanatip
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Center of Excellence in Environmental Catalysis and Adsorption, Faculty Engineering, Thammasat University, Pathumthani 12120, Thailand.
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Analysis of the Supercritical Water Gasification of Cellulose in a Continuous System Using Short Residence Times. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10155185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Supercritical Water Gasification (SCWG) has the capacity to generate fuel gas effluent from wet biomass without previously having to dry the biomass. However, substantial efforts are still required to make it a feasible and competitive technology for hydrogen production. Biomass contains cellulose, hemicellulose and lignin, so it is essential to understand their behavior in high-pressure systems in order to optimize hydrogen production. As the main component of biomass, cellulose has been extensively studied, and its decomposition has been carried out at both subcritical and supercritical conditions. Most previous works of this model compound were carried out in batch reactors, where reaction times normally take place in a few minutes. However, the present study demonstrates that gasification reactions can achieve efficiency levels of up to 100% in less than ten seconds. The effect of temperature (450–560 °C), the amount of oxidant (from no addition of oxidant to an excess over stoichiometric of 10%, n = 1.1), the initial concentration of organic matter (0.25–2 wt.%) and the addition of a catalyst on the SCWG of cellulose in a continuous tubular reactor at short residence times (from 6 to 10 s) have been studied in this work. Hydrogen yields close to 100% in the gas phase were obtained when operating under optimal conditions. Moreover, a validation of the experimental data has been conducted based on the theoretical data obtained from its kinetics.
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8
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Hydrothermal Treatment of Vegetable Oils and Fats Aiming at Yielding Hydrocarbons: A Review. Catalysts 2020. [DOI: 10.3390/catal10080843] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
According to the International Air Transport Agency (IATA), the aviation industry causes 2% of GHG emissions. As a result, goals such as improving aircraft efficiency by 1.5% per year and achieving carbon-neutral growth by 2020 were established. In this circumstance, fuels produced from biomass seem to be a promising route. There are many routes available to convert biomass into renewable fuels such as pyrolysis, hydroprocessing, transesterification, hydrothermal processes, and steam reforming. In this study, one reports a review of hydrothermal technologies. This review reports recent information about hydrothermal processes using water in sub- and supercritical states. This article introduces some concepts of the hydrothermal processes, advantages, and different types of feedstock adopted. The parameters which have an influence on hydrothermal processes such as temperature, pressure, particle size, catalyst, biomass/water ratio, and reaction time are illuminated. Water characteristics in sub- and supercritical conditions are discussed as a highly reactive medium to increase the affinity for the extraction of value-added compounds. Additionally, this review splits and details the reaction schemes that take place under hydrothermal conditions. Finally, it introduces recent research and development (R&D) trends in the hydrothermal process of fatty acids and triglycerides.
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Zhang H, Zhang X, Ding L, Gong M, Su Y, Wang S. Polymerization and oxidation of phenols in supercritical water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:620-633. [PMID: 31661441 DOI: 10.2166/wst.2019.295] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The treatment of toxic and difficult-to-degrade phenolic compounds has become a key issue in the coking, pharmaceutical, and chemical industries. Considering the polymerization and oxidation of phenolic compounds in supercritical water partial oxidation/supercritical water oxidation (SCWPO/SCWO), the present study reviewed the removal efficiency and reaction pathway of phenolic compounds and phenolic waste/wastewater under different reaction conditions. Temperature is the dominant factor affecting the SCWO reaction. When the oxidizing ability is insufficient, the organics polymerize to form phenolic compounds. The gradual increase of oxidant equivalent causes the intermediate product to gradually oxidize to CO2 and H2O completely. Finally, the free radical reaction mechanism is considered to be a typical SCWO reaction mechanism.
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Affiliation(s)
- Huiwen Zhang
- Anhui University of Technology, Maanshan 243000, China
| | - Xiaoman Zhang
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243000, China
| | - Lei Ding
- Engineering Research Center of Biomembrane Water Purification and Utilization Technology, 59 Hudong Road, Maanshan 243000, Anhui, Anhui University of Technology, Maanshan 243000, China E-mail:
| | - Miao Gong
- Hefei University of Technology, Hefei 230009, China
| | - Ying Su
- Yancheng Institute of Technology, Yancheng 221051, China
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Casademont P, Cardozo-Filho L, Meurer E, Sánchez-Oneto J, Portela J. Gasification of olive oil mill waste by supercritical water in a continuous reactor. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.06.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Casademont P, García-Jarana M, Sánchez-Oneto J, Portela J, Martínez de la Ossa E. Hydrogen production by catalytic conversion of olive mill wastewater in supercritical water. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.11.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Rodriguez Correa C, Kruse A. Supercritical water gasification of biomass for hydrogen production – Review. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.09.019] [Citation(s) in RCA: 208] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Sert M, Selvi Gökkaya D, Cengiz N, Ballice L, Yüksel M, Sağlam M. Hydrogen production from olive-pomace by catalytic hydrothermal gasification. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.11.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Cengiz NÜ, Sağlam M, Yüksel M, Ballice L. Treatment of high-strength opium alkaloid wastewater using hydrothermal gasification. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2017.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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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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16
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Hadhoum L, Balistrou M, Burnens G, Loubar K, Tazerout M. Hydrothermal liquefaction of oil mill wastewater for bio-oil production in subcritical conditions. BIORESOURCE TECHNOLOGY 2016; 218:9-17. [PMID: 27344243 DOI: 10.1016/j.biortech.2016.06.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/14/2016] [Accepted: 06/15/2016] [Indexed: 06/06/2023]
Abstract
The main purpose of this study is to investigate the direct hydrothermal liquefaction of oil mill wastewater (OMWW). Experiments were carried out at different temperatures (240-300°C), water contents (58-88wt.%) and reaction times (15-45min). Results show that the highest bio-oil yield was about 58wt.%, resulting in a higher heating value of 38MJ/kg. This was conducted at the following optimal conditions: water content 88wt.%, a temperature of 280°C, and 30min as reaction time. To put bio-oil into wide application, the various physical and chemical characteristics were determined. A detailed chemical composition analysis of bio-oil was performed by gas chromatography-mass spectrometry (GC-MS) coupled with a flame ionization detector (FID). The dominant compounds were identified by using NIST library. Analyses show that the bio-oil contains mainly oleic acid, hexadecanoic acid, fatty acid methyl ester, fatty acid ethyl ester, amino acid derived compounds and phenolic compounds.
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Affiliation(s)
- Loubna Hadhoum
- Energetic and Mechanical Engineering Laboratory, UMBB, Boumerdes 35000, Algeria; GEPEA, UMR 6144, Energy Systems and Environment Department, Mines de Nantes, 04 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France
| | - Mourad Balistrou
- Energetic and Mechanical Engineering Laboratory, UMBB, Boumerdes 35000, Algeria
| | - Gaëtan Burnens
- GEPEA, UMR 6144, Energy Systems and Environment Department, Mines de Nantes, 04 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France
| | - Khaled Loubar
- GEPEA, UMR 6144, Energy Systems and Environment Department, Mines de Nantes, 04 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France.
| | - Mohand Tazerout
- GEPEA, UMR 6144, Energy Systems and Environment Department, Mines de Nantes, 04 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France
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Gong Y, Guo Y, Wang S, Song W. Supercritical water oxidation of Quinazoline: Effects of conversion parameters and reaction mechanism. WATER RESEARCH 2016; 100:116-125. [PMID: 27179598 DOI: 10.1016/j.watres.2016.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/29/2016] [Accepted: 05/01/2016] [Indexed: 06/05/2023]
Abstract
The supercritical water oxidation reaction of quinazoline and a set of related reaction products were investigated in batch reactors by varying the temperature (T, 400-600 °C), time (t, 0-400 s), water density (ρ, 70.79-166.28 kg m(-3)) and oxidation coefficient (OC, 0-4.0). The TOC removal efficiency (CRE) increased significantly as the OC increased, whereas this effect was very limited at high OC (>2.0). Lack of oxygen resulted in low CRE and TN removal efficiency (NRE), also cause coke-formation, and giving high yield of NH3 and nitrogenous organic intermediates. Prolonging reaction time did not provide an appreciable improvement on CRE but remarkably increased NRE at temperature higher than 500 °C. Pyrimidines and pyridines as the nitrogenous intermediates were largely found in GC-MS spectrum. Polymerization among benzene, phenyl radical and benzyl radical played important roles in the formation of PAHs, such as naphthalene, biphenyl, phenanthrene. These collective results showed how the yield of intermediate products responded to changes in the process variables, which permitted the development of a potential reaction network for supercritical water oxidation of quinazoline.
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Affiliation(s)
- Yanmeng Gong
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Yang Guo
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| | - Shuzhong Wang
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Wenhan Song
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
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Seif S, Fatemi S, Tavakoli O, Bahmanyar H. Hydrogen production through hydrothermal gasification of industrial wastewaters using transition metal oxide catalysts. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.03.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Elsayed S, Boukis N, Patzelt D, Hindersin S, Kerner M, Sauer J. Gasification of Microalgae Using Supercritical Water and the Potential of Effluent Recycling. Chem Eng Technol 2016. [DOI: 10.1002/ceat.201500146] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Subcritical water gasification of beet-based distillery wastewater for hydrogen production. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.06.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Akgün M, Kıpçak E. Catalytic hydrogen production from 2-propanol in supercritical water: Comparison of some metal catalysts. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pavlovič I, Knez Ž, Škerget M. Hydrothermal reactions of agricultural and food processing wastes in sub- and supercritical water: a review of fundamentals, mechanisms, and state of research. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:8003-8025. [PMID: 23848589 DOI: 10.1021/jf401008a] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hydrothermal (HT) reactions of agricultural and food-processing waste have been proposed as an alternative to conventional waste treatment technologies due to allowing several improvements in terms of process performance and energy and economical advantages, especially due to their great ability to process high moisture content biomass waste without prior dewatering. Complex structures of wastes and unique properties of water at higher temperatures and pressures enable a variety of physical-chemical reactions and a wide spectra of products. This paper's aim is to give extensive information about the fundamentals and mechanisms of HT reactions and provide state of the research of agri-food waste HT conversion.
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Affiliation(s)
- Irena Pavlovič
- Laboratory for Separation Processes and Product Design, Faculty for Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
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Kıpçak E, Akgün M. Oxidative gasification of olive mill wastewater as a biomass source in supercritical water: Effects on gasification yield and biofuel composition. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.05.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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