Desalination by forming hydrate from brine in cyclopentane dispersion system

Lv, Yi-Ning; Wang, Shanshan; Sun, Chang‐Yu; Gong, Jing; Chen, Guangjin

doi:10.1016/j.desal.2017.03.025

Cited by 79 publications

(53 citation statements)

References 26 publications

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“…Recently, the use of CPH for desalination has been investigated at both laboratory and pilot scales [42,43,69,119,124,186,188,[196][197][198] considering three main concerns: yield of dissociated water from CPH, water conversion to hydrate, and salt removal efficiency. The effects of mentioned considerations on CPH-based desalination process are detailed in Table 8.…”

Section: Influence Of Operating Conditions On Cph-based Desalination mentioning

confidence: 99%

“…The effects of mentioned considerations on CPH-based desalination process are detailed in Table 8. [124,197] [42] Salinity: 3 -5% mass NaCl range: ↑ ↓ NA ↑ [119] 0.17 -5% mass NaCl range: ↑ NA ↓ NA [124,197] Use of graphite ↑ NA ↑ [43] Use of filtering NA NA ↑ [69,124,196,197] Use of centrifuging NA NA ↑ [69] Use of washing [119] [69,196] [ 124,188,197] [ 124,197] Ratio of washing water/dissociated water (g/g) 0.1 -0. [69] [196] [196] Use of sweating NA NA ↑ [69] Use of gravitational separating NA NA ↑ [124,197] Use of spray injecting Use of tube injecting NA NA ↑ ↑ NA NA [124,197] [ 124,197] where ↑: increase; ↓: decrease, NA: Not Acknowledge Removal efficiency, yield of dissociated water, water conversion to hydrate, ratio of washing water/dissociated water (g/g), CP concentration, and water cut were calculated as follows:…”

Section: Influence Of Operating Conditions On Cph-based Desalination mentioning

confidence: 99%

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Cyclopentane hydrates – A candidate for desalination?

Ho-Van

Bouillot

Douzet

et al. 2019

Journal of Environmental Chemical Engineering

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This article presents a systematic review on the past developments of Hydrate-Based Desalination process using Cyclopentane as hydrate guest. This is the first review that covers all required fundamental data, such as multiphase equilibria data, kinetics, morphology, or physical properties of cyclopentane hydrates, in order to develop an effective and sustainable desalination process. Furthermore, this state-of-the-art describes research and commercialization perspectives. When compared to traditional applications, cyclopentane hydrate-based desalination process could be a promising solution. Indeed, it operates under normal atmospheric pressure, lower operation energies are required, etc… However, there are some challenges yet to overcome. A decision aid in the form of a diagram is proposed for a new cyclopentane hydrates-based desalination process. Hopefully, concepts reviewed in this study will suggest new ideas to advance technical solutions in order to make commercial hydrate-based desalination processes a reality.

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Section: Influence Of Operating Conditions On Cph-based Desalination mentioning

confidence: 99%

Section: Influence Of Operating Conditions On Cph-based Desalination mentioning

confidence: 99%

Cyclopentane hydrates – A candidate for desalination?

Ho-Van

Bouillot

Douzet

et al. 2019

Journal of Environmental Chemical Engineering

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“…Among the relevant articles on CPH in brine, the works of Kishimoto et al (morphology of CPH in presence of NaCl), Zylyftari et al (rheological and thermodynamic influences of NaCl on CPH), Corak et al (effect of subcooling and amount of hydrate former on formation of CPH in brine), Han et al (efficiency of salt removal from brine by CPH using three secondary treatment methods: washing, centrifuging, and sweating), Lv et al (desalination by forming hydrate from brine in CP dispersion systems) should be mentioned. Unfortunately, while Nakajima et al determined the heat of dissociation, as well as the equilibrium temperature of CPH formed from a mixture of CP‐in‐water emulsions, no salts were used.…”

Section: Introductionmentioning

confidence: 99%

Experimental measurement and thermodynamic modeling of cyclopentane hydrates with NaCl, KCl, CaCl₂, or NaCl‐KCl present

et al. 2018

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Consistent phase equilibrium data for cyclopentane hydrates in presence of salts are vitally important to many industries, with particular interest to the field of hydrate-based water separation via cyclopentane hydrate crystallization such as desalination. However, there are very little experimental equilibrium data, and no thermodynamic prediction tools. Hence, we set up a method to generate a great deal of much needed equilibrium data for cyclopentane hydrates in diverse saline solutions with a wide range of salt concentrations. Our method does furnish verified, reliable and accurate equilibrium data. Plus, three thermodynamic approaches are developed to predict equilibrium, and provide tools for simulations, by considering the kind of salt and concentrations. All three models are in very good accordance with experimental data. One method, using a new correlation between occupancy factor and water activity, might be the best way to obtain consistent, quick, and accurate dissociation temperatures of cyclopentane hydrate in brine.a Dh b2L w j T 0 ;P 0 5 Dl b2I w j T 0 ;P 0 -6011, where 6011 is the enthalpy of ice (J mol 21 ).

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“…Hydrate is regarded as a promising alternative energy source and has gradually attracted the attention of scholars. The study of hydrate has a potential application in the fields of energy source development [3][4][5], gas storage and separation [6][7][8] and desalination of sea water [9][10][11]. Geological hazards and environmental problems caused by gas exploration are simultaneously discussed [12,13].…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of sI methane hydrate under compression and tension

2020

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AbstractMolecular dynamics (MD) analysis of methane hydrate is important for the application of methane hydrate technology. This study investigated the microstructure changes of sI methane hydrate and the laws of stress–strain evolution under the condition of compression and tension by using MD simulation. This study further explored the mechanical property and stability of sI methane hydrate under different stress states. Results showed that tensile and compressive failures produced an obvious size effect under a certain condition. At low temperature and high pressure, most of the clathrate hydrate maintained a stable structure in the tensile fracture process, during which only a small amount of unstable methane broke the structure, thereby, presenting a free-motion state. The methane hydrate cracked when the system reached the maximum stress in the loading process, in which the maximum compressive stress is larger than the tensile stress under the same experimental condition. This study provides a basis for understanding the microscopic stress characteristics of methane hydrate.

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Desalination by forming hydrate from brine in cyclopentane dispersion system

Cited by 79 publications

References 26 publications

Cyclopentane hydrates – A candidate for desalination?

Cyclopentane hydrates – A candidate for desalination?

Experimental measurement and thermodynamic modeling of cyclopentane hydrates with NaCl, KCl, CaCl₂, or NaCl‐KCl present

Molecular dynamics simulation of sI methane hydrate under compression and tension

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Desalination by forming hydrate from brine in cyclopentane dispersion system

Cited by 79 publications

References 26 publications

Cyclopentane hydrates – A candidate for desalination?

Cyclopentane hydrates – A candidate for desalination?

Experimental measurement and thermodynamic modeling of cyclopentane hydrates with NaCl, KCl, CaCl2, or NaCl‐KCl present

Molecular dynamics simulation of sI methane hydrate under compression and tension

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Experimental measurement and thermodynamic modeling of cyclopentane hydrates with NaCl, KCl, CaCl₂, or NaCl‐KCl present