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colloidal materials
Natural growth of gold dendrites within silica gels
Colloids and Nanoparticles: Implications for Hydrothermal Precious Metal Ore Formation
Investigation on the Mechanism and Properties of a Novel Colloidal Dispersion Gel for Profile Modification in High Salinity Reservoir
Resolving the conundrum of equilibrium solubility of smectites
Release of chromite nanoparticles and their alteration in the presence of Mn-oxides
Strength and permeability properties of sodium silicate–glyoxal-stabilized silt and fine sand
Experimental Evaluation on the Conductivity of Branch Fracture with Low Sand Laying Concentration and Its Influencing Factors in Shale Oil Reservoirs
Labyrinth patterns in Magadi (Kenya) cherts: Evidence for early formation from siliceous gels
Experimental study of the mechanism of grouting colloidal nano-silica in over-broken coal mass
The Release of Incidental Nanoparticles During the Weathering of Gunshot Residue in Soils of a Shooting Range in Ontario, Canada
Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling
Processes of metastable-mineral formation in oxidation zones and mine waste
The genesis of agates and amethyst geodes
Surface chemistry, rheology and microstructure of as-received SHCa-1 hectorite gels
Multiproxy lacustrine records of post-glacial environmental change from the Uinta Mountains, Utah, USA
The Equilibrium of Clay Minerals with Aqueous Solutions in Soils
Detection of Gold Nanoparticles in Hydrothermal Fluids
Influence of gel-strength and magnesium doping on the organization of calcite/hydrogel mesocrystal composites
Abstract Colloid concentration is an important parameter in models of colloid-facilitated transport. The purpose of the present study is to characterize colloid concentrations and colloid stability in natural groundwater from the Horonobe Underground Research Laboratory (URL) in Hokkaido, Japan. The particle sizes of colloids in groundwaters from the Horonobe URL range from several nanometres to c . 500 nm, with a mode particle size of c . 120 nm. Evaluation of colloid stability by DLVO theory suggests that larger colloids (i.e. >100 nm in diameter) would be more stable than smaller colloids in some groundwaters. The estimated colloid particle concentrations when considering the results of DLVO calculations ranged from 2.33 × 10 6 to 1.12 × 10 8 particles/ml, and mass concentrations were estimated to range from 45 to 1540 µg l −1 for diameters greater than 100 nm. Colloids in Horonobe groundwaters appear to be less stable, with a moderate potential for transport, than colloids investigated in similar international studies. This reduced stability may be due to relatively higher ionic strengths and moderate dissolved organic concentrations in Horonobe groundwaters compared to their international counterparts.