Inhibition effects of activated carbon particles on gas hydrate formation at oil–water interfaces

Abstract

The inhibition effects of activated carbon particles on hydrate growth at water and oil interfaces was studied. Significantly reduced hydrate growth was seen in the presence of 0.5 wt% AC particles.

Cyclopentane hydrates – A candidate for desalination?

“…In the next subsections, some details are provided to explain these phenomena. Presence of activated carbon particles ↓ ↓ [51] Presence of free resins, biding resins, and residual Asphaltenes NA ↓ [141] where ↑: increase; ↓: decrease; NA: Not Acknowledge.…”

“…Note that CP act as a hydrate promoter for other applications, such as carbon capture, as described in detail by Herri et al [22], or Zheng et al [47]. It is a co-guest used to milder hydrate formation conditions when combined to other molecules such as N 2 [40,[48][49][50], C 3 H 8 [51], CO 2 [48,49,[52][53][54], CH 4 [40,49,55,56], or H 2 S [56]. Thus, the use of cyclopentane hydrates (CPH) for a combined gas capture and desalination process could be applicable and probably more interesting energetically.…”

Effects of hydrophilic and hydrophobic nano‐CaCO3 on kinetics of hydrate formation

“…22 However, when hydrophobic nanoparticles are at the oil-water interface, the migration of gas and liquid molecules will be prevented, thus inhibiting hydrate formation. 23,24 For hydrophilic nanoparticles, some studies have found that they can also promote hydrate formation. 25 But molecular dynamics simulations show that hydrates are difficult to form on hydrophilic solid surfaces.…”

Anti-Adhesive Behaviors between Solid Hydrate and Liquid Aqueous Phase Induced by Hydrophobic Silica Nanoparticles

“…22 Additionally, the inhibition effect of silica nanoparticles and carbon particles on CP hydrate formation was characterized. 23,24 Because the particles at the water−oil interface prevent diffusion or contact of the CP hydrate slurry, formation and growth of CP hydrates can be delayed. It should be noted that a few earlier studies reported fast formation of methane hydrates by dispersing water into the hydrophobic silica nanoparticles (dry water) to increase the contact area between water and methane gas.…”