Hybrid Processes Combining Sorption and Membrane Filtration

Abstract

Different separations have been used for various environmental applications in industry. Selective separations for the target species and fast kinetics are among the most important criteria to select the most suitable separation process. A hybrid process combines elements of two or more traditional separation processes into one. The main benefits of hybrid processes are lower energy consumption than conventional systems, lower recycle stream, higher yields, and higher sustainability. The main goal of this article is to classify the membrane‐based hybrid processes described in the literature. The attempt to introduce such hybrid processes, especially sorption‐membrane filtration hybrid method, as an alternative means for environmental cleanup is the second goal. These processes were elucidated by modeling and construction of such systems through some case studies.

Grand Challenges in Membrane Modules and Processes

“…Hybrid systems combining membrane processes with other conventional separation technologies provide excellent opportunities to reduce energy consumption and minimize the environmental impact. The separations integrating membrane technology with conventional processes can fill the gap and actively develop the new designs for alternative technologies (Kabay and Bryjak, 2013). Membrane distillation bioreactor (MDBR) is an example in this field.…”

New boron selective sorbents for sorption – membrane hybrid system

“…Depending on the size of separated compounds it is needed to apply pressure that varies from 0.2 bar for microfiltration to 80 bar for reverse osmosis. It should be noted here, however, that boosting pressure increases separation cost significantly [1]. For that reason, a search for new method of small molecules cheap separation is still open.…”

“…One of the investigated options is the hybrid method that merges selective sorption on larger sorbent particles followed by the separation of obtained complexes by micro or ultrafiltration. There are two benefits of the sorption-based hybrid process use: high separation efficiency and low operational cost [1]. Now, in a time of water shortage, we have to use either brackish or wastewater.…”