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Extended Donnan model for ion partitioning in charged nanopores

Autor: Wang, R., Elimelech, M., Biesheuvel, P. M.

Membranes consist of pores and the walls of these pores are often charged. In contact with an aqueous solution, the pores fill with water and ions migrate from solution into the pores until chemical equilibrium is reached. The distribution of ions be

Externí odkaz: http://arxiv.org/abs/2403.02796

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Analysis of concentration polarization in reverse osmosis and nanofiltration: zero-, one-, and two-dimensional models

Autor: Biesheuvel, P. M., Porada, S., Blankert, B., Ryzhkov, I., Elimelech, M.

Reverse osmosis and nanofiltration are membrane-based methods that remove solutes from solvent, for instance they remove salts from water (desalination). In these methods, an applied pressure is the driving force for solvent to pass the membrane, whi

Externí odkaz: http://arxiv.org/abs/2401.11527

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General validity of the exponential law for the effect of concentration polarization in reverse osmosis in a stirred-cell geometry, including an activity correction for 1:1 salt solutions

Autor: Biesheuvel, P. M., Porada, S., Ryzhkov, I., Elimelech, M.

Reverse osmosis (RO) is a method to desalinate water with membranes and an applied pressure. Very important in the theory of mass transport in RO is the concentration polarization (CP) layer, which develops on the upstream side of the membrane becaus

Externí odkaz: http://arxiv.org/abs/2308.14233

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Theory of expansion and compression of polymeric materials

Autor: Biesheuvel, P. M., Fan, H., Elimelech, M.

We extend classical Flory-Rehner theory for the expansion and compression of porous materials such as cross-linked polymer networks. The theory includes volume exclusion, affinity with the solvent, and finite stretching of the polymer chains. We also

Externí odkaz: http://arxiv.org/abs/2307.16146

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A concise tutorial review of Reverse Osmosis and Electrodialysis

Autor: Biesheuvel, P. M., Porada, S., Elimelech, M., Dykstra, J. E.

Publikováno v: Journal of Membrane Science 647 (2022) 120221

Reverse osmosis (RO) and electrodialysis (ED) are the two most important membrane technologies for water desalination and treatment. Their modes of operation and transport mechanisms are very different, but on a closer look also have many similaritie

Externí odkaz: http://arxiv.org/abs/2110.07506

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