Trypsin-enabled construction of anti-fouling and self-cleaning polyethersulfone membrane

Shi, Qing; Su, Yanlei; Xue, Ning; Chen, Wenjuan; Peng, Jinming; Jiang, Zhongyi

doi:10.1016/j.biortech.2010.08.030

Cited by 29 publications

(43 citation statements)

References 31 publications

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“…There are only few studies that report on immobilization of trypsin by entrapping within [34] or coating [35] on the membrane polymer. Furthermore, the covalent immobilization of trypsin on polymer membranes was reported [36][37][38]. However, the described covalent immobilization technique requires several synthesis steps including critical reagents.…”

Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

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Polymer membrane surfaces have been equipped with the digestive enzyme trypsin. Enzyme immobilization was performed by electron beam irradiation in aqueous media within a one-step method. Using this method, trypsin was covalently and side-unspecific attached to the membrane surface. Thus, the use of preceding polymer functionalization and the use of toxic solvents or reagents can be avoided. The resulting membranes showed significantly improved antifouling properties as demonstrated by repeated filtration of protein solutions. Furthermore, the biocatalytic membrane can be simply "switched on" to actively degrade a fouling layer on the membrane surface and regain the initial permeability. The membrane pore structure (pore size and porosity) was neither damaged by the electron beam treatment nor blocked by the enzyme loading, ensuring a stable membrane performance.

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Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

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“…However, hydrodynamic forces when the membranes are operated in dynamic flow process always drag proteins toward the membrane surface and fouling will again be inevitable. Recently, self‐cleaning surfaces based on a breakdown protein foulants by proteolytic enzymes attached on surfaces has been developed and successfully used in dynamic conditions as reported by Jiang et al . In their study, TRY was covalently immobilized onto poly(methacrylic acid)‐graft‐polyethersulfone (PMAA‐ g ‐PES) membrane which was then exposed multicycle of bovine serum albumin (BSA) filtration/hydraulic flashing.…”

Section: Introductionmentioning

confidence: 99%

Layer‐by‐layer self‐assembly of multifunctional enzymatic UF membranes

Yürekli

2019

J of Applied Polymer Sci

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In order to eliminate membrane fouling and to ensure enzymatic hydrolysis of urea, multifunctional biocatalytic membranes were prepared by using urease (URE) and trypsin (TRY) enzymes on the sulfonated polysulfone (SPSf) ultrafiltration membrane via layer‐by‐layer (LbL) self‐assembly method. The membrane architecture consisted of multilayer assembly with TRY and URE enzymes as the outer layer and inner sandwiched layer, respectively. Polyethyleneimine (PEI) and alginate (ALG) were used as cationic and anionic polyelectrolytes. Sulfonation and PEI deposition were successfully accomplished as confirmed by attenuated total reflectance Fourier transform infrared spectroscopy, differential scanning calorimetry (DSC) and scanning electron microscopy analysis, contact angle measurements, staining with toluidine blue and Congo red dyes and dead‐end filtration experiments. A characteristic value of SPSf membrane with a high water permeability (1000 L/m2.h.bar) and 95% bovine serum albumin (BSA) rejection was observed. In static conditions, URE activities of SPSf2‐PEI‐URE membrane were not affected by BSA fouling, while TRY immobilizations with increased concentrations (SPSf2‐PEI‐URE‐PEI‐ALG‐TRY) significantly lowered the activity of URE. In dynamic conditions, each deposited layer exhibited individual resistance to flow that can be considered as irreversible fouling and caused 90% of flux decline for the SPSf2‐PEI‐URE‐PEI‐ALG‐TRY membrane assembly. The recovery of the initial flux for the multilayered membrane at the end of six fouling and washing cycles was observed 85%. Moreover, at the end of 5 cycles, 78% of the URE initial activity of the multilayered membrane was preserved. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48750.

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“…Accordingly, successful operation of the above three-step approach to WWR in the oil refining industry is still a minority, as fouling by oil and organics, scaling by metals, etc. yield to rapid and expensive membrane replacements, usually not reported in the literature [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

UF and RO membrane fouling during wastewater desalination in the petrochemical industry

Intini

Liberti

2014

Desalination and Water Treatment

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A B S T R A C TThe large consumption of fresh water in petrochemical industry makes wastewater reuse almost mandatory, with UF and RO membrane desalination playing a crucial role. To that aim, frequent and expensive recovery treatments are required, not always sufficient to prevent (ir)reversible fouling of the membranes, as experienced with a major European petrochemical factory. The paper describes the detailed physio-chemical investigation and instrumental analyses carried out to discover the cause(s) of the fouling and the operational measures required to contrast the phenomenon.

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Trypsin-enabled construction of anti-fouling and self-cleaning polyethersulfone membrane

Cited by 29 publications

References 31 publications

Biocatalytic Self-Cleaning Polymer Membranes

Biocatalytic Self-Cleaning Polymer Membranes

Layer‐by‐layer self‐assembly of multifunctional enzymatic UF membranes

UF and RO membrane fouling during wastewater desalination in the petrochemical industry

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