Surface modified by green synthetic of Cu-MOF-74 to improve the anti-biofouling properties of PVDF membranes

Zheng, Hongai; Wang, Derui; Sun, Xin; Jiang, Shuangyan; Liu, Yue; Zhang, Daquan; Zhang, Lizhi

doi:10.1016/j.cej.2021.128524

Cited by 84 publications

(32 citation statements)

References 66 publications

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“…To answer this problem, the addition of inorganic materials with hydrophilic characteristics in their structures such as clays [141,142], mesoporous silica [143], zeolite [144] and MOFs [145,146] to form a hybrid membrane or MMM is attractive since it will provide good antifouling properties.…”

Section: Utilization Of Metal-organic Framework As Filler In Mixed Matrix Membrane (Mmm) Metal-organic Framework As Antifouling Fillermentioning

confidence: 99%

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

et al. 2021

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The accumulation of pollutants in water is dangerous for the environment and human lives. Some of them are considered as persistent organic pollutants (POPs) that cannot be eliminated from wastewater effluent. Thus, many researchers have devoted their efforts to improving the existing technology or providing an alternative strategy to solve this environmental problem. One of the attractive materials for this purpose are metal-organic frameworks (MOFs) due to their superior high surface area, high porosity, and the tunable features of their structures and function. This review provides an up-to-date and comprehensive description of MOFs and their crucial role as adsorbent, catalyst, and membrane in wastewater treatment. This study also highlighted several strategies to improve their capability to remove pollutants from water effluent.

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Section: Utilization Of Metal-organic Framework As Filler In Mixed Matrix Membrane (Mmm) Metal-organic Framework As Antifouling Fillermentioning

confidence: 99%

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

et al. 2021

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“…Polymer-based membranes are currently the most frequently utilized membranes for many purposes, including microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) [19]. Of all polymeric materials, such as polysulfone (PSF), polypropylene (PP), polytetrafluoroethylene (PTFE), polyethylene (PE), and polyvinylidene fluoride (PVDF) [20,21], the PVDF membrane is the most extensively employed membrane used to fabricate UF and MF membranes since it has outstanding mechanical, physical, and chemical properties, as well as excellent thermal stability [22,23]. Although PTFE has a similar structure and advantages when compared to PVDF, PTFE has a high density whereas PVDF has a low density and higher porosity, which generally results in a higher water flux [24].…”

Section: Introductionmentioning

confidence: 99%

Polyvinylidene Fluoride Membrane with a Polyvinylpyrrolidone Additive for Tofu Industrial Wastewater Treatment in Combination with the Coagulation–Flocculation Process

et al. 2021

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Wastewater from the tofu industry contains many pollutants that are very harmful to the environment, significantly endangering aquatic life and producing a pungent odor. This study aims to prepare a polyvinylidene fluoride (PVDF) membrane with the additive polyvinylpyrrolidone (PVP), and utilize it to treat tofu wastewater in the ultrafiltration (UF) process. Flat sheet membranes were prepared using PVDF that was dissolved in N,N-dimethylacetamide (DMAc) and then combined with the additive material of PVP at the varying compositions of 14.9/0.1, 14.85/0.15, and 14.8/0.2 g of PVDF/gram of PVP. The addition of PVP was proposed to improve the properties of the membranes. Characterization by scanning electron microscope (SEM), water contact angle, and Fourier transform infrared spectroscopy (FTIR) were performed on the PVDF/PVP membrane flat sheet in order to understand and compare changes in the physical and chemical properties that occurred in the membrane. Prior to the UF process, the tofu wastewater was treated by a coagulation–flocculation process through a jar tester using poly aluminum chloride (PAC) as a coagulant. Based on the membrane characterization, the addition of PVP improved the physical and chemical properties of membranes. The pore size of the membrane becomes larger, which could increase permeability as well as the flux value. The TSS and turbidity of the water produced in the UF process decreased with an increase in feed pressure due to a greater driving force generated to facilitate the penetration of the suspended solids. The UF results showed that the effect of PVP on water flux was greatest for the 14.85/0.15 PVDF/PVP membrane for both pure and wastewater. In addition, the highest percentage of rejection for TSS and turbidity were observed in the 14.9/0.1 PVDF/PVP membrane and rejection for TDS was indicated in the 14.8/0.2 PVDF/PVP membrane. Meanwhile, the resulting pH decreased slightly across all samples as feed pressure increased.

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“…The sterilisation performance of the device was evaluated according to the plate counting method [27] , [28] . E. coli was selected as the target bacteria, which was reactivated in LB liquid medium prepared and sterilised at high temperature and pressure.…”

Section: Methodsmentioning

confidence: 99%

“…The sterilizing rate of the device was calculated as follows: [27]

where N b and N m represent the number of live colonies on the control plate and the experimental plate, respectively.…”

Section: Methodsmentioning

confidence: 99%

H2O2 generation enhancement by ultrasonic nebulisation with a zinc layer for spray disinfection

Cao

Tong

Feng

et al. 2022

Chemical Engineering Journal

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Graphical abstract The effective generation of H 2 O 2 and Zn 2+ by ultrasonic nebulisation was realized by assembiling a zinc layer on the oscillator plate of a commercial ultrasonic nebuliser. After 30 min, H 2 O 2 (121.25 μM) and Zn 2+ (4.75 μg/mL) were produced and sprayed in the air for disinfection. A sterilization ratio of 93.53% for E. coli was obtained.

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Surface modified by green synthetic of Cu-MOF-74 to improve the anti-biofouling properties of PVDF membranes

Cited by 84 publications

References 66 publications

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

Polyvinylidene Fluoride Membrane with a Polyvinylpyrrolidone Additive for Tofu Industrial Wastewater Treatment in Combination with the Coagulation–Flocculation Process

H2O2 generation enhancement by ultrasonic nebulisation with a zinc layer for spray disinfection

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