Expanded bed adsorption breakthrough curves was studied for nanoparticle’s adsorption and effect of some parameters for instance, particle’s siz and feed velocity were assessed. Experimental data was analyzed with Langmuir, Freundlich and Sips isotherm models and well matched with Langmuir model. Also, the pseudo-first-order and second-order kinetic models were used to describe the experimental kinetic results and the highest adsorption percent occurred in the initial 15 minutes. Effects of time and initial concentration were studied in batch system and the highest capacity, 16.32 mg/ml was measured. Effective various parameters such as pH and ionic strength that influence on protein adsorption function were investigated and results were used in experiments. Egg Albumin or OvAlbumin protein and its nanoparticles were used as a target protein model. Therefore, Tannic acid affinity ligand (TA) used for affinity matrix preparation for both Kc-Zn and Streamline structures. Kappa carrageenan-Zinc (Kc-Zn) chemical structure, with 75-250 μm particle size and 1.7g/ml density as a new expanded bed’s adsorbents matrix, evaluated for macromolecules and biologic nanoparticle adsorption in batch and expanded beds and compared with Streamline industrial adsorbents. ![]() Ligand Immobilization on High Density Nano Porous Kappa Carrageenan Zinc Adsorbents and its Evaluation for Protein Nano Particles Separation The highest value of flux related to thin film composite membrane with pororanone and was 10 Kg/m2.h. Also, the rejection of these composite membranes didn''t significantly decrease. It was found that adding co-solvent to organic phase caused to change in membrane structure, reduce the roughness and increase the flux. In order to modify the performance of membrane and change in the structure of top thin layer of composite membrane, 1.5 wt % of two ketone co-solvent (propanone and butanone) was added to organic phase. Thin film composite membrane was synthesized by interfacial polymerization on sulfonated polyethersulfone sublayer. Then, permeate of synthesized ultrafiltration membrane was collected and passed through thin film composite nanofiltration membranes to recover the lactose which the 98% lactose recovery was obtained. However, the ultrafiltration membrane with polysulfone/ sulfonated polyethersulfone ratio 0/100 showed lowest total resistance (0.61) and the highest rejection (93%). The results of the performance and fouling behavior in cheese whey filtration indicated that the ultrafiltration membranes comprise both two polymers (polysulfone and sulfonated polyethersulfone) had higher flux and desirable protein rejection. ![]() Then, the polysulfone/ sulfonated polyethersulfone blending ultrafiltration membranes were synthesized with blending ratios of 100/0, 50/50, 25/75 and 0/100 at the optimum concentration of LiCl. ![]() In order to improve the structural parameters and performance of membranes, ultrafiltration membranes were fabricated with different concentration of LiCl (0, 0.1, 0.5, 1 wt %) and finaly 0.5 wt % LiCl was obtained as an optimum concentration. ![]() In the first part of this project, the ultrafiltration membranes were fabricated and evaluated for cheese whey ultrafiltration. Accordingly, the cheese whey prepared from Kalleh dairy factory passed through fabricated ultrafiltration membrane to separate the protein and remove the impurities of whey. Lactose recovery from cheese whey produced in the cheese whey was investigated by ultrafiltration and nanofiltration membrane processes to reuse from its valuable and nutrient compounds and decrease the environmental pollution of cheese whey. Lactose recovery from cheese whey using membrane filtration in dairy industry
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