Efficient removal of nickel(II) from high salinity wastewater by a novel PAA/ZIF-8/PVDF hybrid ultrafiltration membrane

Li, Ting; Zhang, Weiming; Shu, Zhai; Gao, Guandao; Ding, Jie; Liu, Yang; Zhao, Xin; Pan, Bingcai; Lv, Lu

doi:10.1016/j.watres.2018.06.031

Cited by 139 publications

(37 citation statements)

References 39 publications

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“…The adsorption of heavy metals is known to follow the Langmuir (monolayer adsorption) or Freundlich (multi-layer adsorption) isotherms [ 39 , 44 ], both of which state that there exists a limit on the adsorption capacity with respect to the feed concentration. Thus, MMMs are usually less effective in treating feeds with a high concentration of heavy metals because adsorption sites will get saturated quickly.…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…There is a need for a cleaning step to restore the membrane performance (i.e., restore the adsorption sites) once the active adsorption sites are saturated (usually evidenced by the drastic drop in removal efficiency of the MMM) [ 39 , 41 ]. Another approach is to engineer the adsorbent materials to be ‘regenerative’ (i.e., the active sites can be reinstated) by performing an in-situ acid backwashing process or using regeneration solutions under an electric field [ 43 , 44 ]. For example, it was postulated that the presence of H + ions could replace the adsorbed Cr ions on graphene oxide (GO), thereby freeing up the adsorption sites ( Figure 3 D).…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…However, the study also noted that the rejection of hexavalent chromium (chromium (VI)) was reduced by ~7% after three consecutive cycles. It must be highlighted that the regeneration efficiency typically decreases with more cycles [ 44 ] because of incomplete desorption such that the initial adsorption sites cannot be fully regenerated. In addition, the drop in adsorption capacity of the MMM can also be attributed to the minor leaching of the adsorbent during the regeneration process [ 22 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

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Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

et al. 2021

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Various pollutants of different sizes are directly (e.g., water-borne diseases) and indirectly (e.g., accumulation via trophic transfer) threatening our water health and safety. To cope with this matter, multifaceted approaches are required for advanced wastewater treatment more efficiently. Wastewater treatment using mixed matrix membranes (MMMs) could provide an excellent alternative since it could play two roles in pollutant removal by covering adsorption and size exclusion of water contaminants simultaneously. This paper provides an overview of the research progresses and trends on the emerging materials used to prepare MMMs for pollutant removal from water in the recent five years. The transition of the research trend was investigated, and the most preferred materials to prepare MMMs were weighed up based on the research trend. Various application examples where each emerging material was used have been introduced along with specific mechanisms underlying how the better performance was realized. Lastly, the perspective section addresses how to further improve the removal efficiency of pollutants in an aqueous phase, where we could find a niche to spot new materials to develop environmentally friendly MMMs, and where we could further apply MMMs.

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Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

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Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

et al. 2021

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“…The artificial color (e.g., dyes or pigments) is one of the contaminants recognized easily for its presence in water is highly visible and undesirable. [ 1,2 ] Hence, various techniques, such as precipitation, [ 3 ] membrane filtration, [ 4 ] and adsorption, [ 5 ] , have been developed to remove dyes from water. Among all the extensively researched techniques related to the treatment of such contaminants, adsorption was regarded as a promising method because of its low cost and easy handling.…”

Section: Introductionmentioning

confidence: 99%

Effective and sequential removal of acid and basic dye wastewater with metallic hybrid mesoporous silica

Wen

Wei

et al. 2021

Applied Organom Chemis

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In this work, nickel‐modified mesoporous silica prepared via sol–gel method (Ni‐S) and co‐precipitation method (Ni‐C) as effective adsorbents were successfully employed for the removal of acid fuchsin (AF) and basic fuchsin (BF). The effect of the retained templates on the adsorption of AF in synthetic materials was investigated in detail. The results indicated that retained templates contributed to improve the adsorption of AF and the theoretical maximum adsorption capacity of Ni‐S reached 689.66 mg/g according to Langmuir model. The electrostatic attraction between the anions (‐SO3−) in the dye molecules and the cations (‐NH3+) in the template (HAD) helps to enhance the adsorption effect. The adsorption isotherm and kinetics data fitted perfectly to Langmuir isotherm model and followed the pseudo‐second‐order kinetics. The thermodynamic parameters calculated from temperature‐dependent isotherms suggested that AF adsorption on nickel‐modified hexagonal mesoporous silica (Ni‐HMS) was endothermic and spontaneous process. In addition, the above‐mentioned adsorbents depleted after adsorbing AF could be recovered by simple calcination to apply into the adsorption of BF and exhibited excellent removal performance for basic dyes.

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“…Considering the hazardous nature of this ion, several chemical and physical techniques including ion-exchange, solvent extraction, precipitation, ultrafiltration, nanofiltration, adsorption, reverse osmosis, ion flotation and electrodeionization [8][9][10][11][12][13][14][15] have been employed for nickel ion removal from liquid solution. Among these methods, nanofiltration process which can be described as "low-pressure reverse osmosis membranes" benefits from low energy consumption, high efficiency of multivalent ions removal, ease of operation and reliability [16].…”

Section: Introductionmentioning

confidence: 99%

A comparative study for the rejection of nickel ions from waste water by PES, fMWCNTs/PES, TiO2/PES and TiO2-fMWCNTs/PES mixed matrix membranes

Yavari

Alipoor

Aroon

et al. 2021

NEP

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In this study, the neat polyethersulfone (PES) membrane and the mixed matrix membranes (MMMs) containing 20 wt. % polyethersulfone (PES) and different amounts of functionalized multi-walled carbon nanotubes (fMWCNTs), TiO2, and TiO2 coated on fMWCNTs were fabricated by wet phase inversion and conventional casting methods. The nickel ions rejection and permeate flux performance were then investigated and compared by these fabricated membranes. The characteristics of the membranes were performed by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and contact angle (CA) measurement. The operational parameters such as polymer concentration, pressure, pH, time and nickel ion concentration for nickel ions rejection and permeability were firstly optimized on the neat PES membrane. The performance of MMMs containing various amounts of nanoparticles was then evaluated and compared under these optimized conditions. The obtained results indicated that the membrane containing 20 wt. % PES, and operational condition like pressure 15bar, low concentration of nickel, time =30min and various amount of pH was the best conditions to achieve the highest rejection percentage of nickel ions and permeate flux. In such operational conditions, PES/fMWCNTs and PES/TiO2 membranes have the highest nickel ion rejection and permeate flux, respectively. Totally the prepared mixed matrix membranes showed that they have higher ability to reject nickel ions from wastewater and a higher permeate flux value compared with the neat PES membrane.

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Efficient removal of nickel(II) from high salinity wastewater by a novel PAA/ZIF-8/PVDF hybrid ultrafiltration membrane

Cited by 139 publications

References 39 publications

Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

Effective and sequential removal of acid and basic dye wastewater with metallic hybrid mesoporous silica

A comparative study for the rejection of nickel ions from waste water by PES, fMWCNTs/PES, TiO2/PES and TiO2-fMWCNTs/PES mixed matrix membranes

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