Rare earth oxides such as La2O3 and Gd2O3 are abundant in waste optical glass. The separation of rare is beneficial to the recycling resources. In this study, oxide particles were separated from using high gradient magnetic separation, influence different fluid media (i.e., water, anhydrous ethanol, their mixture) on results was investigated. By measured zeta potential water/ethanol pH water wi...

Adding nanoparticles in a drilling fluid can aid the sealing of nanopores borehole wall rock and mud cake; this way, filtrate loss be reduced is stabilized. In work, spectrophotometric method was used to study effect dispersants on calcium carbonate nanoparticles. The best dispersion achieved at cetyltrimethyl ammonium bromide (CTAB) concentration 4 wt%, dispersing time 45 min, pH value 8 stirr...

When oil is mixed with light alkanes, asphaltenes can precipitate out of oil solutions in a multistep process that involves the formation of nano and colloidal scale particles, the aggregation of asphaltene colloids, and their eventual sedimentation. Amphiphilic dispersants can greatly affect this process. The mechanism of the dispersant action in colloidal asphaltene suspensions in heptane has...

Fine particles are under active consideration as alternatives to chemical dispersants for large-scale petroleum spills. Fine carbon particles with engineered surface chemistry have been shown to stabilize oil-in-water emulsions, but the environmental impacts of large-scale particle introduction to the marine environment are unknown. Here we study the impact of surface-engineered carbon-black ma...