Optimisation of ultrafiltration of a highly viscous protein solution using spiral-wound modules

Application of an ultrasound field in chemical cleaning of ceramic tubular membrane fouled with whey proteins

“…Besides, use was made of two commercial detergents, P3-Ultrasil 67 and P3-Ultrasil 69 (Henkel, Germany). The former consists of two main cleaning components: alkyl amine oxide (15-30%) and proteolytic enzyme (<5%), while the latter contains phosphonates (5-15%) and salts of organic acids (5-15%) (Lipnizki et al, 2005). The cleaning solutions consisted of the following mixtures of the two detergents (in % w/w): 0.25 P3-Ultrasil 67 + 0.4 P3-Ultrasil 69, 0.5 P3-Ultrasil 67 + 0.8 P3-Ultrasil 69, and 0.75 P3-Ultrasil 67 + 1.2 P3-Ultrasil 69.…”

Kinetic models for alkali and detergent cleaning of ceramic tubular membrane fouled with whey proteins

“…Also, commercially available detergents P3-ultrasil 67 and P3-ultrasil 69 (Henkel, Germany) were used. The former consists of two main cleaning components: alkyl amine oxide (15-30%w/w) and proteolytic enzyme (<5%w/w), while the latter contains phosphonates (5-15%w/w) and salts of organic acids (5-15%w/w) (Lipnizki et al, 2005). The enzymatic cleaning solutions were prepared by mixing detergents as follows: 0.8%w/ w P3-ultrasil 69 + 0.5%w/w P3-ultrasil 67 and 1.2%w/w P3-ultrasil 69 + 0.75%w/w P3-ultrasil 67.…”

“…Efficiency of such a process is greatly affected by decrease in flux during filtration due to formation of deposit layer at the membrane surface and in the pores. Although investigations are mostly focused on the fouling, equally important are investigations on cleaning of membranes fouled with milk or whey proteins (Bartlett et al, 1995;Muños-Aguado et al, 1996;Bird and Bartlett, 2002;Blanpain-Avet et al, 2004;D'Souza and Mawson, 2005;Argüello et al, 2005;Lipnizki et al, 2005;Bansal et al, 2006;Nigam et al, 2008). As cleaning agents, alkali solutions were used (Bartlett et al, 1995;Bird and Bartlett, 2002;Blanpain-Avet et al, 2004;Argüello et al, 2005;Bansal et al, 2006;Nigam et al, 2008).…”

“…As cleaning agents, alkali solutions were used (Bartlett et al, 1995;Bird and Bartlett, 2002;Blanpain-Avet et al, 2004;Argüello et al, 2005;Bansal et al, 2006;Nigam et al, 2008). Also, formulated detergents were applied (Muños-Aguado et al, 1996;Argüello et al, 2005;Lipnizki et al, 2005).…”

High concentration of skim milk proteins by ultrafiltration: Characterisation of a dynamic membrane system with a rotating membrane in comparison with a spiral wound membrane

“…However, SWM are not capable of processing highly viscous fluids owing to the generation of high pressure drops within the module at high retentate viscosities (Akoum, Jaffrin, & Ding, 2005;Lipnizki, Casani, & Jonsson, 2005). As the enrichment of total milk protein is accompanied by a strong rise in viscosity (Aaltonen, 2012;Solanki & Rizvi, 2001) the employment of SWMs for this purpose is limited.…”