Basu, Suddhasatwa (1993) A Study on Effect of Wetting on Mechanism of Coalescence in a Model Coalescer. In: Journal of Colloid and Interface Science, 159 (1). pp. 68-76.
Wet.pdf - Published Version
Restricted to Registered users only
Download (678Kb) | Request a copy
In order to depict the mechanism of coalescence in fibrous bed coalescers, a model coalescer was fabricated. Both water/oil and oil/water dispersions were run through this model coalescer to check for coalescence on PTFE and glass surfaces. The equilibrium contact angle and the dynamic contact angle of the dispersed drops were measured on these surfaces in the presence of the continuous phase. Coalescence was monitored using a microscope. Based on these observations a mechanism of coalescence in the model coalescer is proposed. Different modes of coalescence are correlated to the equilibrium contact angle and the dynamic contact angle. Deposition of dirt on the coalescing surface is observed to result in change of wettability, leading to redispersion of the already coalesced dispersed phase into larger droplets.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier Science.|
|Department/Centre:||Division of Mechanical Sciences > Chemical Engineering|
|Date Deposited:||02 Feb 2011 09:52|
|Last Modified:||02 Feb 2011 09:52|
Actions (login required)