Abstract Poly (m-phenylene isophthalamide) (PMIA) membranes are prepared via evaporating part solvent of the casting solution before its nonsolvent-induced phase separation. Zeolite imidazolate framework-8 (ZIF-8) is added into PMIA as an inorganic filler to improve filtration capability membrane. The structure composite characterized by scanning electron microscopy (SEM), Zeta-potential analyz...

Porous polymer supported continuous ZIF-8 membranes were prepared via an interfacial synthesis method. Membranes with only one synthesis cycle showed excellent performance in the nanofiltration range.

The widely used dyes in the pharmaceutical, chemical, and medical industries have brought about an intensive concern for sustainable development of environment. Membrane separation offers a versatile method classified recycling reuse residual components. In this work, polyimide membranes were synthesized via polymerization 4,4′-(hexafluor-isopropylidene) diphthalic anhydride 1,4-bis (4-aminophe...

In this study, a high-performance organic solvent nanofiltration (OSN) membrane is engineered via nanoscale aminated graphene quantum dots (GQD_NH2)-mediated interfacial polymerization. The GQD_NH2, featuring favorable amine monomers, can atomically regulate the diffusion rate at interface, yielding nanofilms with controllable thickness (decreasing from 200 to 100 nm). Furthermore, zero-dimensi...

The influence of osmotic pressure and solute adsorption on permeate flux during nanofiltration (NF) of a wool textile dye solution was investigated. Solutions of C.I. Acid Orange 7 with concentrations ranging from 2 to 2000 mg/l were subjected to nanofiltration with a NF 45 membrane. An increase of flux decline with dye concentration was observed. The resistance-in-series model gives evidence t...

In regions characterized by water scarcity, such as coastal Southern California, groundwater containing chromophoric dissolved organic matter is a viable source of water supply. In the coastal aquifer of Orange County in California, seawater intrusion driven by coastal groundwater pumping increased the concentration of bromide in extracted groundwater from 0.4 mg l⁻¹ in 2000 to over 0.8 mg l⁻¹ ...