Analysis of solvent flux through nanofiltration membranes by mechanistic, chemometric and hybrid modelling

Predictive membrane transport models for Organic Solvent Nanofiltration: How complex do we need to be?

“…With the AIC, models that have different numbers of parameters can be properly compared, thus allowing for model discrimination, as also suggested by Santos et al [45]. The measure associated with the AIC used in this work for model discrimination is the Δ AIC [44].…”

Application of the solution-diffusion model for the removal of atrazine using a nanofiltration membrane

“…The solution-diffusion models [19,20,30] have been used to depict mass transfer through membranes, after determining the constants of the models experimentally. System mass balances together with solution-diffusion mass transfer models have been used to simulate the separation process.…”

“…Several models to simulate nanofiltration systems have been described in the literature [19][20][21]. Of these, the solution-diffusion model is one of the simplest since it is easy to use and predicts with an acceptable level of precision the results that can be obtained with reverse osmosis membranes.…”

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

“…The solvent permeability calculated with the new model correlated well with the experimental data of both hydrophilic and hydrophobic NF membranes over the entire range of solvents used (including both high-polar solvents and apolar solvents), which confirmed that the assumption of convective-diffusive transfer in SRNF membranes is valid. Many other comprehensive models have been proposed, such as the coupled series-parallel resistance model 25 as well as mechanistic, chemometric, and hybrid models, 132 which are not discussed in this review.…”

“…Therefore, building a model with which the performance of different types of SRNF membranes can be exactly predicted is difficult. Although molecular simulations and mechanistic analyses published by Darishmanesh et al 152,155 and Santos et al, 132 respectively, offer insight into a likely general model, most existing models have excluded swelling effects. Thus, seeking a parameter, such as an interaction parameter between solvents and membranes, to represent the effects of swelling on the separation performance of SRNF membranes is important for building a general model because the swelling of SRNF membranes reorganizes the pore structure of the active layers in the membranes.…”