High-permeance metal–organic framework-based membrane adsorber for the removal of dye molecules in aqueous phase

Abstract

This paper reports on a novel membrane adsorber comprising metal–organic frameworks (MOFs) for water treatment.

Membrane adsorbers with ultrahigh metal-organic framework loading for high flux separations

“…However, there still remain unsurmountable challenges. Large-area and continuous defect-free MOF separation layers are difficult to fabricate; MOF membrane adsorbers that can be used for treating a small amount of wastewater with low pollutant concentration suffer from pulverization problem, having limited application in practice 25–27 ; for MOF-based MMMs, high MOF loadings lead to phase segregation with increased fragility and bring the difficulties in the producing of large-area membranes without cracks, while low loadings usually result in low specific adsorption sites and/or separation channels/sites and consequently cause low selectivity 22,28 .…”

MIL-53(Al) and NH2-MIL-53(Al) modified α-alumina membranes for efficient adsorption of dyes from organic solvents

“…17 Most of the research applying MIL-53 for organic dye separation, has tended to focus only on their sieving properties, which do significantly improve the performance for dye separation from organic solvents via the organic solvent nanofiltration (OSN) process. Although extensive research has been carried out on the adsorption capacity of MOFs in aqueous media, [18][19][20] only little attention has been paid to their adsorption capacities in organic media. This study therefore sets out to assess the MOF adsorption ability for dye removal from organic solvents.…”

Controlled Synthesis and Selective Adsorption Properties of Pr2CuO4 Nanosheets: a Discussion of Mechanism

“…Over the past few decades, dye-containing wastewaters discharged by industries are particularly dangerous pollutants because dyes, such as methyl orange (MO), methylene blue (MB), rhodamine B (RhB), malachite green (MG), and so on, are not biodegradable in human body [ 1 – 6 ]. Of these, MG as a commonly used dye has recently been used as a bactericidal agent for fish eggs [ 7 , 8 ].…”