Equilibrium and Kinetic Study of Bovine Serum Albumin (BSA) Adsorption onto Fabricated Polyethersulfone (PES)/Hydroxyapatite (HAP) Adsorptive Mixed Matrix Membrane (MMM)

Abstract

In this study, different amount of hydroxyapatite (HAP) was embedded into polyethersulfone (PES) matrix to prepare adsorptive mixed matrix membranes (MMMs). All fabricated membranes were characterised based on functional groups, morphology, overall porosity, water content, hydrophilicity and pure water flux. The relationship of equilibrium and kinetics of bovine serum albumin (BSA) adsorption onto fabricated membrane in a batch system was performed. The BSA adsorption equilibrium data is best described by Freundlich isotherm model followed by Langmuir isotherm model. The kinetics of the adsorption is well presented by pseudo-second-order kinetic model and followed by pseudo-first-order kinetic model. Among all membranes, fabricated PES/ HAP adsorptive MMM (K4) produced with 60 wt% HAP shows the best characteristic of membrane with higher water content, porosity and hydrophilicity, demonstrating the higher average pure water flux, j w of 29.12 m 2 l -1 h -1 ± 0.6 m 2 l -1 h -1 , adsorption capacity, q e of 26.54 (g BSA.g membrane -1 ) and adsorption kinetic rate, k 2 of 0.814 (h -1 ). The reusability of K4 membrane shows the most effective regeneration compare than other membrane. The results suggested that the PES/HAP adsorptive MMM can be effectively applied for the adsorption of BSA from aqueous solution and can offer high potential merit for application in membrane adsorption process.

Characterization and Kinetic Studies of Poly(vinylidene fluoride-co-hexafluoropropylene) Polymer Inclusion Membrane for the Malachite Green Extraction

“…The magnified image of the water droplet was then observed using a digital camera, and the CA readings were obtained at 10 s after the deposition of the water droplet on the surface of the dried membrane. The contact angles of each membrane at 5 different spots were recorded, and their mean values were calculated [ 39 ].…”

Development of polyethersulfone/polylactic acid‐blended nanocellulose membranes for enhanced removal of methylene blue dye

“…In all the membranes, the adsorption peaks characteristic to PES are observed at 710, 820, 1105, 1153, 1239, 1581, 1324, 1400, and 1477 cm −1 . These have been assigned to the CH 2 bond, CH stretching, CO stretching, SO stretching, aromatic ether stretching, benzene ring stretching, aromatic skeletal vibrations, and CH stretching, respectively 58–60 . The M1 blend spectra patterns appeared to be the same to those of M0 likely because of the similarity in some of chemical groups that make up their structures, with peaks between 1672 and 550 cm −1 possibly masking some characteristic peaks of PLA in that region.…”

“…These have been assigned to the CH 2 bond, C H stretching, C O stretching, S O stretching, aromatic ether stretching, benzene ring stretching, aromatic skeletal vibrations, and C H stretching, respectively. [58][59][60] The M1 blend spectra patterns appeared to be the same to those of M0 likely because of the similarity in some of chemical groups that make up their structures, with peaks between 1672 and 550 cm À1 possibly masking some characteristic peaks of PLA in that region. Peaks at 1745, 1452, and 1080 cm À1 have been assigned to C O stretching, C H stretching, and C O C stretching of PLA respectively, while peaks between 3000 and 3600 cm À1 are indicative of O H stretch.…”

Performance Evaluation of Supported Ionic Liquid Membranes (SILMs) Derived from Optimized PES/PDMS/ZIF-L Composites for CO2 Separation

“…For pristine PES, the peaks that could characterize the samples can be observed at 1576 cm −1 (C�C), 1484 cm −1 (CH 3 −C−CH 3 ), 1235 cm −1 (C−O−C bond), 1296 cm −1 (S�O bond), and 1144 cm −1 (sulfone group in PES). 30,37 Apparently, the composite PES/ PDMS/ZIF-L membrane has a lower peak intensity than PES, indicating the presence of the selective layer on the PES support. The peaks at 795 and 1007 cm −1 in the PES/PDMS/ ZIF-L refer to Si−C stretching and Si−O−Si asymmetric stretching, respectively, due to the presence of PDMS.…”