Effect of concentrate solution pH and mineral composition of a whey protein diluate solution on membrane fouling formation during conventional electrodialysis

Valorization of Nixtamalization wastewaters (Nejayote) by integrated membrane process

“…In addition, low fouling index in the membrane about 37.5% was determined. In this membrane the rejection of soluble calcium can be produced the same phenomenon described by Ayala-Bribiesca et al (2006). Moreover, the wastewater treated is an extract with a high alkalinity degree and it can act as a chemical cleaning in membranes, a variety of alkalis are used in the food industry as cleaning agents such as hydroxides, phosphates, sulphates and carbonates usually of sodium and phosphorus but the calcium-complexes can support the hydrolysis and solubility of specific compounds as carbohydrates, fats, or proteins (D'Souza and Mawson, 2005).…”

“…A low fouling index in the membrane (22.68%) was determined using Nejayote extract. Normally, the low fouling on membrane surface by the treatment of solutions rich in calcium is attributed to the formation and migration of precipitates (as Ca(OH) 2 ) that produce their free movement and easy removal (Ayala-Bribiesca et al, 2006). However, taken into account the incomplete recovery of the initial water permeability of the MF membrane by the treatment of Nejayote, from an internal pore blocking to a cake formation can be supposed due to the presence of large pore size can permit the penetration of particles in the internal structure of the membrane causing an irreversible fouling (Cassano et al, 2007).…”

Nature identification and morphology characterization of anion-exchange membrane fouling during conventional electrodialysis

“…Neosepta AMX-SB anion-exchange membranes from Tokuyama Soda Ltd. (Tokyo, Japan) used in a previous study [11] for model salt and protein diluate solution demineralizations were analyzed.…”

Modelagem De Um Processo De Concentração, Purificação E Fracionamento Dos Componentes Do Soro Do Leite Através De Tecnologia De Separação Por Membranas

“…Essa divergência é presenciada a partir do ponto de intersecção entre os dados experimentais e os teóricos, onde os dados experimentais seguem uma tendência distinta do modelo. Embora o modelo considere uma diminuição da força motriz decorrente da diminuição da concentração, os dados experimentais mostram que, na prática isso não ocorre, devido ao fouling (Ayala-Bribiesca, et al, 2006).…”