An unsteady state retention model for fluid desorption from sorbents

Area of Science:

• Materials Science
• Chemical Engineering
• Environmental Science

Background:

• Sorbent performance testing involves draining after saturation, but liquid loss dynamics are poorly understood.
• Accurate modeling of liquid loss is vital for real-world applications, including oil spill cleanup.

Purpose of the Study:

• To develop an analytical model for predicting unsteady-state liquid loss from dripping sorbents.
• To provide a tool for better understanding and optimizing sorbent behavior in dynamic conditions.

Main Methods:

• An analytical model was derived to describe the dynamic loss of liquid from saturated sorbents.
• The model was validated using experimental data from over 60 sorbent-sorbate systems.

Main Results:

• The proposed model accurately describes the time-dependent uptake capacity during dripping.
• The model incorporates the Kamaan coefficient (K) to define the retention profile's curvature.
• Excellent agreement was observed between the model's predictions and experimental results.

Conclusions:

• The developed analytical model effectively captures the dynamic liquid loss from dripping sorbents.
• This model offers a significant advancement for evaluating sorbent performance in practical scenarios.
• The findings have implications for optimizing sorbent usage in spill response and other applications.