Enhanced oil removal from a real polymer production plant by cellulose nanocrystals-serine incorporated polyethersulfone ultrafiltration membrane

Asadi, Azar; Gholami, Foad; Zinatizadeh, Ali Akbar

doi:10.1007/s11356-021-18055-4

Cited by 6 publications

(2 citation statements)

References 47 publications

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“…The additive gradually fills the surface of the membrane at increasing ratios. The filling of membrane pores with Cys and the presence of hydrophilic additive produce the surface with a smooth structure [29]. Moreover, the evenly distributed CuO NPs inhibits the growth of larger particle cluster on the membrane surface.…”

Section: Surface Roughness Of Psf-cuo-cys Membranementioning

confidence: 99%

Cysteine-modified copper oxide nanoparticle doped in polysulfone ultrafiltration membrane for protein removal and treatment of poultry wastewater

Hasbullah

Sabri

Hamdan

et al. 2022

Preprint

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Discharge of wastewater with high organic materials demands a significant development of polymeric ultrafiltration membrane for efficient treatment. Among the various nanomaterials used as additives in the polymeric membrane, copper oxide nanoparticles (CuO NPs) were particularly notable. The nanoparticles are available at an inexpensive cost, with vast surface area and ease of surface functionalization. However, the nanoparticle tends to agglomerate in the polymeric membrane due to the high surface activity of particles with smaller sizes. Surface modification of CuO NPs using amino acid L-cysteine as a stabilizer can overcome this problem. In this work, the surface modification process undergoes ultrasonication to create covalent anchoring at different ratios of L-cysteine to CuO NPs. Preparation of dope solution involves the addition of 18.0 wt.% polysulfone (PSf) and 5 wt.% polyvinylpyrrolidone (PVP). Then, the fabrication of the flat sheet membranes employs an immersion precipitation process. The TEM and FTIR analysis confirmed the presence of modified CuO NPs. Investigation using SEM, AFM, porosity, tensile strength, and zeta potential thoroughly characterized the membrane. Measurements of contact angle and water content uptake determined the membrane hydrophilicity. Evaluation of pure water flux (PWF), protein rejection, antifouling capability, and filtration performance of synthetic poultry wastewater propose the membrane separation performance. Data revealed that modified nanoparticles improved the ability of the membrane to resist fouling, and BSA rejection was above 95%. Accordingly, the PSf membrane with a 1:1 ratio of L-cysteine to CuO NPs showed the best UF performance.

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Section: Surface Roughness Of Psf-cuo-cys Membranementioning

confidence: 99%

Cysteine-modified copper oxide nanoparticle doped in polysulfone ultrafiltration membrane for protein removal and treatment of poultry wastewater

Hasbullah

Sabri

Hamdan

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…On the other hand, FO membranes also show a low water flux, high internal concentration polarization (ICP), and external concentration polarization (ECP), and numerous research works are carried out in order to overcome these FO challenges. In the previous decades, remarkable success has been accomplished for the preparation of thin-film composite (TFC) FO membranes that consist of a polyamide (PA) salt-rejecting active layer and a mostly semi-hydrophobic support layer [ 31 , 32 , 33 , 34 ]. Several researchers are working on developing advanced TFC membranes for the FO process that can contribute improved water flux and reduced concentration polarization [ 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Date Palm Tree Leaf-Derived Cellulose Nanocrystal Incorporated Thin-Film Composite forward Osmosis Membranes for Produced Water Treatment

et al. 2023

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Worldwide water shortage and significant issues related to treatment of wastewater streams, mainly the water obtained during the recovery of oil and gas operations called produced water (PW), has enabled forward osmosis (FO) to progress and become advanced enough to effectively treat as well as retrieve water in order to be productively reused. Because of their exceptional permeability qualities, thin-film composite (TFC) membranes have gained increasing interest for use in FO separation processes. This research focused on developing a high water flux and less oil flux TFC membrane by incorporating sustainably developed cellulose nanocrystal (CNC) onto the polyamide (PA) layer of the TFC membrane. CNCs are prepared from date palm leaves and different characterization studies verified the definite formations of CNCs and the effective integration of CNCs in the PA layer. From the FO experiments, it was confirmed that that the membrane with 0.05 wt% of CNCs in the TFC membrane (TFN-5) showed better FO performance in PW treatment. Pristine TFC and TFN-5 membrane exhibited 96.2% and 99.0% of salt rejection and 90.5% and 97.45% of oil rejection. Further, TFC and TFN-5 demonstrated 0.46 and 1.61 LMHB pure water permeability and 0.41 and 1.42 LHM salt permeability, respectively. Thus, the developed membrane can help in overcoming the current challenges associated with TFC FO membranes for PW treatment processes.

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Efficient heavy metals and salts rejection using a novel modified polysulfone nanofiltration membrane

2022

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Recent research proclivity is about supplying water for drinking, urban and industrial applications which is recognized as one of the most significant challenges that threaten humanity. Giving its simplicity and high efficient yield, membrane technology has been preferred compared to other separation technologies for water and wastewater treatment. In the present research, KIT-6 (KIT: Korea Advanced Institute of Science and Technology) was functionalized by H-acid to improve hydrophilic functional groups on KIT-6 surface. Different characterization tests were performed to prove the insertion of H-acid on KIT-6 (H-KIT-6), e.g., FT-IR, XRD, zeta potential and FESEM analysis. Also, the effects of different loading of KIT-6 and H-KIT-6 on the morphology, characteristics and performance of Polysulfone (PSf) nanofiltration (NF) membranes were investigated. The maximum pure water flux (30.2 kg/m2 h), the lowest irreversible fouling ratio (3.96%) and the highest flux recovery ratio (96.04%) were obtained for the membrane embedded with 0.1 wt.% H-KIT-6 (optimum membrane). Also, the performance of the synthesized membranes was evaluated by rejection of four different salts (K2SO4, MgSO4, KCl and NaCl) and heavy metal ions (As3+ and Hg2+). The NF membrane embedded with 0.1 wt.% H-KIT-6 also presented the highest rejection of different salts and heavy metal ions (As3+ = 99.85% and Hg2+ = 99.27%) compared to the others. Finally, the performance of the optimum membrane to treat a real case of Gachsaran brackish water was assessed. As a result, by applying the optimum membrane, 565 mg/l, 28 mg/l and 27 mg/l of Ca2+, SO42− and Mg2+ were rejected, respectively.

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Enhanced oil removal from a real polymer production plant by cellulose nanocrystals-serine incorporated polyethersulfone ultrafiltration membrane

Cited by 6 publications

References 47 publications

Cysteine-modified copper oxide nanoparticle doped in polysulfone ultrafiltration membrane for protein removal and treatment of poultry wastewater

Cysteine-modified copper oxide nanoparticle doped in polysulfone ultrafiltration membrane for protein removal and treatment of poultry wastewater

Date Palm Tree Leaf-Derived Cellulose Nanocrystal Incorporated Thin-Film Composite forward Osmosis Membranes for Produced Water Treatment

Efficient heavy metals and salts rejection using a novel modified polysulfone nanofiltration membrane

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