Process scale-up, economic, environmental assessment of vibratory nanofiltration of coffee extracts for soluble coffee production process intensification

Mathematical modeling of vibratory shear‐enhanced nanofiltration in the preconcentration of coffee extracts for soluble coffee manufacturing

“…Mathematical models, such as those developed in this study, serve as a useful tool in managing permeate quality by managing membrane fouling in vibratory NF operation. For a scale-up study, the model can be used to estimate the instantaneous permeate quality in a modified concentration study, similar to those presented by Laurio and Slater (2020). Average permeate concentrations may be determined as a function of water recovery from the vibratory NF of coffee extract.…”

“…This observation presents a limitation of the vibratory NF operation that may be considered when optimizing the process for scale-up. In a parallel coffee extract preconcentration scale-up study, Laurio and Slater (2020), presented that despite the contribution of vibration, the operation may only be applied in concentrating coffee extracts to 35% wt/wt. This preconcentration limit was also observed in CF NF studies conducted by Pan et al (2013), thus, emphasizing the strength of the membrane foulants found in coffee extracts that limit the operation.…”

“…The vibrations impart high membrane surface shear rates (20,000-160,000 s À1 ) that overcome those generated from CF velocities (<30,000 s À1 ) and reduce membrane fouling (Akoum, Jaffrin, Ding, Paullier, & Vanhoutte, 2002;Bian, Yamamoto, & Watanabe, 2000;Ding et al, 2015) The system has been studied in the concentration of milk proteins and dairy wastewater treatment (Akoum, Jaffrin, & Ding, 2005;Kertész, Lászl o, Forgács, Szab o, & Hodúr, 2011), clarification, and yeast recovery of alcoholic beverages, (Akoum et al, 2002;Fillaudeau et al, 2007) and water treatment from high salt seawater and freshwater sources (Petala & Zouboulis, 2006;Shi & Benjamin, 2009;Su, Li, Palazzolo, & Ahmed, 2018;Subramani, DeCarolis, Pearce, & Jacangelo, 2012). Initial studies conducted by Laurio and Slater (2020) for coffee extract preconcentration, and by ; Wisniewski et al (2020) on soluble coffee wastewater reclamation, showed that vibratory shear enhancement improved permeate fluxes from NF operation by up to four times higher than those obtained from CF filtration, with minimal flux decline. When considered as a supplemental operation to thermal evaporation, preliminary evaluation of the scaled-up operation shows great potential to recover reusable water, reducing freshwater usage, wastewater generation, operating costs, and environmental emissions altogether.…”

Materiales carbonosos jerarquizados derivados de la borra de café para su aplicación en supercondensadores

“…La borra de café es un desecho en la industria del café. Se trata de un residuo sólido que se obtiene después de la extracción sólido-líquido, en la cual la fracción líquida se liofiliza para la obtención del café soluble (Laurio & Slater, 2020). La borra de café puede llegar a representar un 50 % del peso del residuo total de la producción del café (Campos-Vega, et al, 2015).…”

Influences of Technological Parameters on Cross-Flow Nanofiltration of Cranberry Juice

“…It has a pore size in the range of 0.2–2 nm with a molecular weight cut-off (MWCO) from 200 to 1000 Da [ 4 , 5 ]. In recent decades, it has been popularly applied in the food industry for fractionating sugars [ 6 ], the recovery and purification of amino acids [ 7 ], the recovery and purification of fermentation products [ 8 ], the concentration of coffee extract [ 9 ], juices [ 10 ], and the rejection of salt in whey protein production [ 11 ]. The reasons for this are the advantages of nanofiltration such as: low operating temperature, low operation cost, and being simple to install and maintain.…”