Skip to main content
Figure 5 | Geochemical Transactions

Figure 5

From: Aggregation of montmorillonite and organic matter in aqueous media containing artificial seawater

Figure 5

Average hydrodynamic diameters ( dH ) of montmorillonite (8 mg/L) + HA (1.6 mg/L) suspensions in constantly stirred solutions were measured as a function of time after mixing with artificial seawater (ASW) using dynamic light spectroscopy. The pH was circumneutral. The results show a lack of aggregation in the zero salinity suspension. In the suspensions with slightly elevated salinity (i.e., S = 1.8 and 3.6 psu), a slight increase in the average dH was detected toward the end of the time series observations (T ≈ 60 minutes). At the highest salinity value investigated (S = 7.2 psu), the colloidal particles gradually aggregated during the ~60 minutes following the ASW mixing.

Back to article page