Co₂ Stripping From Diethanolamine Using Membrane Contactors: Model Validation and Membrane Wettability

Abstract

In the present work, CO2 desorption (stripping) from diethanolamine (DEA) solution using polyvinylidene fluoride hollow fiber membrane contactor is theoretically investigated. A comprehensive two dimensional mathematical model is developed to evaluate the membrane wettability when DEA solution is used at different operating conditions such as sweeping gas flow rate, initial CO2 loading and liquid phase temperature. In addition, the impact of flow rate of liquid phase on the CO2 stripping performance was theoretically investigated. The simulated results were compared with the experimental data obtained from literature. The results revealed that the PVDF membrane was suffered from wetting at studied operating conditions.

Crosslinked poly(hydroxybutyl acrylate-co-acrylamide) based hydrogels: synthesis, characterization, and performance evaluation in heavy metal removal

“…Tensile test of prepared hydrogels was achieved by using Instron 3366 machine analyzer with 3 mm/min as crosshead speed. After plotting strain (λ -1) versus stress (τ), the following relation was employed to obtain Young's modulus (E) [25].…”

Synthesis and characterization of modified PVC waste with different diamines for Hg(II) removal

“…On the other hand, the huge production, and uses of plastic polymers such as PVC and polyethylene cause many environmental problems due to their durability [6,7]. To reduce the problems caused by these pollutants, polymers waste should be recycled to useful materials that can be employed in many applications, such as oil/water separation, heavy metals removal, construction and building, drug delivery release, and gases separation [8][9][10][11]. To ensure the success of using PVC waste as heavy metals removal, its chemical structure should be modified by introducing functional groups containing high electron density atoms such as oxygen and nitrogen due to the ability of such atoms to form strong coordination bonds with heavy metals ions [12].…”

Hollow Fiber Membrane Contactors in CO2 Desorption: A Review

“…Software such as Aspen Custom Modeler (ACM), MATLAB, COMSOL Multiphysics and PARDISO are commonly used. 25,36,88,179,[183][184][185] The complex solution of the 2D model could be time consuming. Therefore, the development of a new model procedure based on the combination of accurate methods without high complexity must be addressed in this field.…”

“…The finite element method is adopted for a numerical solution for a set of differential equations of the 2D model approach. Software such as Aspen Custom Modeler (ACM), MATLAB, COMSOL Multiphysics and PARDISO are commonly used. ,,,,− …”

“…Fang et al, 31 Yan et al, 84 and Wang et al 85 experimentally evaluated the relationship between solvent composition and MVR efficiency using 23 types of alkalonamines; Khaisri et al 35 and Lee et al 16 analyzed the CO 2 stripping performance in monoethanolamine (MEA) using both polymeric and ceramic hollow fiber membrane contactors; Volkov et al 86 evaluated membrane-amine solvent compatibility using PTFE flat membranes; Malakhov and Bazhenov 87 studied the desorption of CO 2 from an aqueous methyl diethanolamine (MDEA) solution through membranes made of PTMSP; Listiyana et al 42 conducted experiments of CO 2 desorption in PP HFMC using blended amines to increase CO 2 regeneration efficiency and reduce the cost of solvent usage; and Mohammed et al 88 modeled CO 2 desorption from diethanolamine (DEA) solution using PVDF HFMC. Although many alternatives of promising solvents for carbon capture are reviewed in this work, conventional hightemperature regeneration using MEA is the benchmark for full-scale applications.…”