TY - JOUR
T1 - Optimization of vibratory nanofiltration for sustainable coffee extract concentration via response surface methodology
AU - Laurio, Michael Vincent O.
AU - Yenkie, Kirti M.
AU - Slater, C. Stewart
N1 - Funding Information:
The authors acknowledge the support of the U.S. Environmental Protection Agency through the Pollution Prevention Grant Program (NP-96271316-2). The authors also acknowledge the staff of the Department of Chemical Engineering, Rowan University: Rob McClernan and Kimberly Johnston; and Engineering Clinic students: Jacquelyn Shaeffer, Carly Jankowski, Adam Niznik, Matt Razze, and Ben Kayhart. The authors also appreciate the support of Landon Graham of New Logic Research, Inc.
Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.
PY - 2022
Y1 - 2022
N2 - A vibratory nanofiltration (NF) system was investigated in the preconcentration of coffee extracts for soluble coffee production. Four different NF membranes were studied, among which the selected membrane (Trisep Microdyn TS80) rendered the highest permeate flux and rejection efficiencies. The vibratory NF operation also considerably improved permeate flux, rejection efficiencies, and reduced flux decline from those observed in crossflow (CF) operation. Further, the effects of applied transmembrane pressure (TMP) and module vibrational frequency (F) at corresponding displacement (d) were investigated via response surface methodology in conjunction with a Box-Behnken experimental design, as to their interactions on the performance of the vibratory NF operation. Mathematical models were statistically determined from multivariate regression analysis on permeate flux, maximum surface shear rate, permeate quality, and rejection efficiencies. These correlations were also used to determine optimum conditions (TMP = 3.79 MPa, F = 54.7 Hz, d = 3.18 cm) to process 25.4 g L−1 coffee extracts. The observed responses from experimental verification were found to be in good agreement with the predicted values obtained by the reduced regression models.
AB - A vibratory nanofiltration (NF) system was investigated in the preconcentration of coffee extracts for soluble coffee production. Four different NF membranes were studied, among which the selected membrane (Trisep Microdyn TS80) rendered the highest permeate flux and rejection efficiencies. The vibratory NF operation also considerably improved permeate flux, rejection efficiencies, and reduced flux decline from those observed in crossflow (CF) operation. Further, the effects of applied transmembrane pressure (TMP) and module vibrational frequency (F) at corresponding displacement (d) were investigated via response surface methodology in conjunction with a Box-Behnken experimental design, as to their interactions on the performance of the vibratory NF operation. Mathematical models were statistically determined from multivariate regression analysis on permeate flux, maximum surface shear rate, permeate quality, and rejection efficiencies. These correlations were also used to determine optimum conditions (TMP = 3.79 MPa, F = 54.7 Hz, d = 3.18 cm) to process 25.4 g L−1 coffee extracts. The observed responses from experimental verification were found to be in good agreement with the predicted values obtained by the reduced regression models.
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U2 - 10.1080/01496395.2021.1879858
DO - 10.1080/01496395.2021.1879858
M3 - Article
AN - SCOPUS:85100712858
SN - 0149-6395
VL - 57
SP - 112
EP - 130
JO - Separation Science and Technology
JF - Separation Science and Technology
IS - 1
ER -