Investigation of salt removal using cyclopentane hydrate formation and washing treatment for seawater desalination

Han, Songlee; Rhee, Young‐Woo; Kang, Seong-Pil

doi:10.1016/j.desal.2016.11.016

Cited by 93 publications

(36 citation statements)

References 23 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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“…Since Hammerschmidt found natural gas pipeline blocking caused by hydrate formation in 1934 [10], gas hydrates have attracted extensive attention in industrial circles. So far, hydrates could potentially be applied to natural gas storage and transportation [11][12][13], gas mixture separation [14,15], CO 2 capture and sequestration [16,17], sea water desalination [18,19], and so on. The study of hydrate-based technologies has obtained considerable development and great progress in the past 2 of 10 decades.…”

Section: Introductionmentioning

confidence: 99%

Morphology Investigation on Cyclopentane Hydrate Formation/Dissociation in a Sub-Millimeter-Sized Capillary

Sun

et al. 2019

Crystals

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The formation, dissociation, and reformation of cyclopentane (CP) hydrate in a sub-millimeter-sized capillary were conducted in this work, and the morphology of CP hydrate was obtained during above processes, respectively. The influences of the supercooling degree, i.e., the hydrate formation driving force, on CP hydrate crystals’ aspect and growth rate were also investigated. The results demonstrate that CP forms hydrate with the water melting from ice at the interface between the CP and melting water at a temperature slightly above 273.15 K. With the action of hydrate memory effect, the CP hydrate in the capillary starts forming at the CP-water interface or CP–water–capillary three-phase junction and grows around the CP–water interface. The appearance and growth rate of CP hydrate are greatly influenced by the supercooling degree. It indicates that CP hydrate has a high aggregation degree and good regularity at a high supercooling degree (or a low formation temperature). The growth rate of CP hydrate crystals greatly increases with the supercooling degree. Consequently, the temperature has a significant influence on the formation of CP hydrate in the capillary. That means the features of CP hydrate crystals in a quiescent system could be determined and controlled by the temperature setting.

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“…Plus, the enormous amount of natural gas in the form of oceanic and permafrost gas hydrates are a promising future energy resource [9][10][11][12]. Recently, gas hydrates have attracted widespread attention due to diverse applications such as gas separation [13][14][15][16][17][18][19][20][21], CO 2 capture [22][23][24][25][26][27][28][29][30], water desalination [31][32][33][34][35][36][37][38], natural gas storage and transportation [39][40][41][42][43][44] and even planetary science [45][46][47][48]. For all above mentioned applications of clathrate hydrates, it is essential to increase our knowledge of thermodynamics, kinetics and the crystallization mechanisms of clathrate hydrates.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have investigated phase equilibria of clathrate hydrates [12,33,[49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

A review on hydrate composition and capability of thermodynamic modeling to predict hydrate pressure and composition

Babakhani

Bouillot

Ho-Van

et al. 2018

Fluid Phase Equilibria

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Gas hydrates are widely considered to be a crucial topic in oil and gas industries and attracting significant research due to potential applications such as gas storage, separation as well as water desalination. While the guest composition of hydrate phase is vital, due to the experimental difficulties in measuring hydrate composition, very little applicable information is available in the literature. Paradoxically, this is true, in spite of that; completing an experimental database on hydrate composition could have a significant impact on the processes design and modeling. Moreover, this should provide fundamental knowledge of kinetic effects as well as clarifying thermodynamic equilibrium. Hence, this paper was planned with the intent to fill in the gaps, classify and offer an overview of experimentally derived data on hydrate composition for literature. In addition, a thermodynamic model based on the van der Waals and Platteeuw approach and Kihara potential was utilized to simulate the hydrate composition along with equilibrium pressure. Previous experimental data shows that guest distribution in hydrate phase depends noticeably on the guest composition in vapor phase. In addition, composition of larger molecules, such as propane or butane, in the hydrate phase, is notably higher than in vapor phase. Our simulation results demonstrated that the hydrate composition data from direct measurement (microscopic tools) have been well evaluated by the thermodynamic model. Nevertheless, when structural transition can occur in a system, the thermodynamic model is no longer accurate. In the case of indirect measurements, the thermodynamic model usually predicts well the hydrate composition. Nonetheless, its capability does vary with differing hydrate composition and equilibrium pressure, to the extent that in some cases, it completely fails to predict hydrate composition. This could be due to kinetic effects on the enclathration of guest molecules during the crystallization, errors in experimental techniques to measure the hydrate composition or the model parameters like Kihara potential are not properly applied. Finally, these observations show that more reliable experimental database is needed to study the evolution of guest distribution in hydrate phase and some enhancements are required for the standard thermodynamic model.

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Investigation of salt removal using cyclopentane hydrate formation and washing treatment for seawater desalination

Cited by 93 publications

References 23 publications

Cyclopentane hydrates – A candidate for desalination?

Cyclopentane hydrates – A candidate for desalination?

Morphology Investigation on Cyclopentane Hydrate Formation/Dissociation in a Sub-Millimeter-Sized Capillary

A review on hydrate composition and capability of thermodynamic modeling to predict hydrate pressure and composition

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