Layered double hydroxide-modified membranes for water treatment: Recent advances and prospects

Sajid, Muhammad; Jillani, Shehzada Muhammad Sajid; Baig, Nadeem; Alhooshani, Khalid

doi:10.1016/j.chemosphere.2021.132140

Cited by 76 publications

(43 citation statements)

References 90 publications

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“…Polymeric membranes are famous for separation applications due to their flexibility, low cost, facile fabrications, tunning of pores, and greater opportunity to develop membranes with excellent selectivity. [124] Polymeric membranes that are famous for emulsified oil-water separation are polyvinylidene fluoride (PVDF) [125] , cellulose acetate (CA), [126] , polyethersulfone (PES), [127] polysulfone (PS), and polyacrylonitrile (PAN) [128] . The surface tension or membrane surface wettability of the membranes plays a critical role in their separation performances.…”

Section: Polymeric Membranes For Separation Of Oil-water Emulsionsmentioning

confidence: 99%

Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

Baig

Salhi

Sajid

et al. 2022

The Chemical Record

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Oily wastewater has become one of the leading causes of environmental pollution. A massive quantity of oily wastewater is released from industries, oil spills, and routine activities, endangering the ecosystem's sustainability. Due to the enormous negative impact, researchers put strenuous efforts into developing a sustainable solution to treat oily wastewater. Microfiltration/ultrafiltration membranes are considered an efficient solution to treat oily wastewater due to their low cost, small footprint, facile operation, and high separation efficiencies. However, membranes severely fouled during the separation process due to oil's adsorption and cake layer formation, which shortens the membranes’ life. This review has critically discussed the microfiltration/ultrafiltration membrane synthesizing methods and their emulsion's separation performance. In the end, key challenges and their possible solutions are highlighted to provide future direction to synthesize next‐generation membranes.

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Section: Polymeric Membranes For Separation Of Oil-water Emulsionsmentioning

confidence: 99%

Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

Baig

Salhi

Sajid

et al. 2022

The Chemical Record

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“…To address these shortcomings, a series of cationic inorganic frameworks exhibiting enhanced thermal and hydrolytic stability has been prepared. , Notably, layered double hydroxides (LDHs) consisting of cationic brucite-type layers charge balanced by interlayer anions have received extensive attention as the next generation of inorganic anion exchangers. , LDHs have shown excellent removal efficiency for a variety of harmful oxyanions including chromate, phosphate, arsenate, and selenate . However, high-temperature calcination (usually at or above 450 °C) is usually required before their usage, which is a heavy energy consumption process .…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Cationic Aluminoborate as a New Paradigm for Highly Selective and Efficient Cr(VI) Capture from Aqueous Solution

Wang

Bai

Cichocka

et al. 2022

JACS Au

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Water pollutants existing in their oxyanion forms have high solubility and environmental mobility. To capture these anionic pollutants, cost-effective inorganic materials with cationic frameworks and outstanding removal performance are ideal adsorbents. Herein, we report that two-dimensional (2D) cationic aluminoborate BAC(10) sets a new paradigm for highly selective and efficient capture of Cr(VI) and other oxyanions from aqueous solution. The structure of Cr(VI)-exchanged BAC(10) sample (Cr(VI)@BAC(10), H 0.22 ·Al 2 BO 4.3 ·(HCrO 4 ) 0.22 ·2.64H 2 O) has been successfully solved by continuous rotation electron diffraction. The crystallographic data show that the 2D cationic layer of BAC(10) is built by AlO 6 octahedra, BO 4 tetrahedra, and BO 3 triangles. Partial chromate ions exchanged with Cl – ions are located within the interlayer region, which are chemically bonded to the aluminoborate layer. BAC(10) shows faster adsorption kinetics compared to the commercial anion exchange resin (AER) and layered double hydroxides (LDHs), a higher maximum adsorption capacity of 139.1 mg/g than that of AER (62.77 mg/g), LDHs (81.43 mg/g), and a vast majority of cationic MOFs, and a much broader working pH range (2–10.5) than LDHs. Moreover, BAC(10) also shows excellent Cr(VI) oxyanion removal performance for a solution with a low concentration (1–10 mg/L), and the residual concentration can be reduced to below 0.05 mg/L of the WHO drinking water criterion. These superior properties indicate that BAC(10) is a promising material for remediation of Cr(VI) and other harmful oxyanions from wastewater.

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“…[27][28][29] The positively charged laminates of LDHs provide excellent anion exchange capacity, and the areacharge matching rule controls the arrangement of interlayer anions and makes them have a good dispersion in the layers, so as to increase the binding sites for adsorption. [30][31][32][33][34] LDH materials such as carbonate-or nitrate-type LDHs can trap target ions by chemical precipitation and surface complexation, but they generally exhibit low selectivity and unsatisfactory effect. 35 To enhance sorption performance for target ions, various kinds of functional guests can be introduced into the interlayers, in which more effective capture for target species can be realized by the interaction between the functional guests and target species.…”

Section: Introductionmentioning

confidence: 99%

Highly selective and ultrafast uptake of uranium from seawater by layered double hydroxide co-intercalated with acetamidoxime and carboxylic anions

Wang

Yang

et al. 2022

J. Mater. Chem. A

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Layered double hydroxide-modified membranes for water treatment: Recent advances and prospects

Cited by 76 publications

References 90 publications

Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

Recent Progress in Microfiltration/Ultrafiltration Membranes for Separation of Oil and Water Emulsions

Two-Dimensional Cationic Aluminoborate as a New Paradigm for Highly Selective and Efficient Cr(VI) Capture from Aqueous Solution

Highly selective and ultrafast uptake of uranium from seawater by layered double hydroxide co-intercalated with acetamidoxime and carboxylic anions

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