Extended performance study of forward osmosis during wastewater reclamation: Quantification of fouling-based concentration polarization effects on the flux decline

Nguyen, Thanh-Tin; Adha, Rusnang Syamsul; Field, Robert W.; Kim, In Soo

doi:10.1016/j.memsci.2020.118755

Cited by 22 publications

(4 citation statements)

References 56 publications

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“…Concentration polarization occurs during the filtering process due to the membrane’s selective permeability and the concentration gradient at the membrane/solution interface. Concentration polarization impairs membrane mass transport, increasing fouling and creating the cake layer on the membrane surface Figure c demonstrates that inserting untreated and plasma-treated clinoptilolite lowered all resistance characteristics; the most critical feature in this figure is a rather significant drop in intrinsic resistance of the clinoptilolite and Z-PO 2 0.1 Torr/PES membrane.…”

Section: Resultsmentioning

confidence: 99%

“…Concentration polarization impairs membrane mass transport, increasing fouling and creating the cake layer on the membrane surface. 59 Figure 10c demonstrates that inserting untreated and plasmatreated clinoptilolite lowered all resistance characteristics; the most critical feature in this figure is a rather significant drop in intrinsic resistance of the clinoptilolite and Z-PO 2 0.1 Torr/ PES membrane. This decrease might be attributed to the enhancement of membrane hydrophilicity caused by the introduction of more hydrophilic functional groups.…”

Section: Membrane Performance 331 Permeation Performancementioning

confidence: 99%

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Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures

Vatanpour

Mehrabani

Safarpour

et al. 2023

ACS Appl. Mater. Interfaces

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In this research, the non-thermal glow discharge plasma process was implemented to modify the surface of natural clinoptilolite zeolite before incorporation into the polyethersulfone (PES) membrane. The influence of plasma gas pressure variation on the fouling resistance and separation performance of the prepared membranes was studied. Fourier transform infrared, field emission scanning electron microscopy, and X-ray diffraction analyses of the unmodified and modified clinoptilolites revealed the Si–OH–Al bond’s development during plasma treatment and the change in surface characteristics. In terms of performance, increasing the plasma gas pressure during clinoptilolite treatment resulted in the twofold enhancement of water flux from 91.2 L/m2 h of bare PES to 188 L/m2 h of the membrane containing plasma-treated clinoptilolite at 1.0 Torr pressure. Meanwhile, the antifouling behavior of membranes was improved by introducing more hydrophilic functional groups derived from the plasma treatment process. Additionally, the enhanced dye separation of membranes was indicated by the separation of 99 and 94% of reactive green 19 and reactive red 195, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Membrane Performance 331 Permeation Performancementioning

confidence: 99%

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures

Vatanpour

Mehrabani

Safarpour

et al. 2023

ACS Appl. Mater. Interfaces

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“…This phenomenon strengthens the antifouling property and the absence of cake formation on the membrane surface. All this is due to the smooth surface, ambitiousness, and negative charge (Nguyen et al, 2021). As seen for M1, due to the hydrophobic nature of the membrane, protein adsorption on the surface and pores cannot be ignored.…”

Section: Resultsmentioning

confidence: 99%

Arsenic and total dissolved solids removal using antibacterial/antifouling nanofiltration membranes modified by functionalized graphene oxide and copper ferrodioxide

Gholami

Ghanizadeh

Zinatizadeh

et al. 2023

Water Environment Research

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The intrinsic hydrophilicity of metal compounds, such as copper ferrite (CuFe2O4), and organic compounds, including graphene oxide (GO) and triethylenetetramine (TETA), make them promising adsorbents for heavy metals removal. The presence of lone pairs in these compounds is observed in modified polyethersulfone membranes used for the separation of arsenic (As) and total dissolved solids (TDS), including mono and divalent salts from aqueous solutions. The objective of this study was to investigate the performance of GO–TETA–CuFe2O4 membranes for wastewater treatment applications. The membranes were characterized for their optimal mechanical strength (tensile strength) and high negative charge (zeta potential) on the surface. Separation tests were conducted at different pressures and pH levels to evaluate the membrane's effectiveness in removing contaminants. In addition, the membranes were examined for their antibacterial properties. The modified membrane exhibited superior performance compared with the control membrane, with TDS removal rates of 93.8%, As3+ removal rates of 81.2%, and As5+ removal rates of 87.9%. The contact angle of the modified membrane was reduced, resulting in an increase in pure water flux from 13.11 to 27.87 L/m2.h. The modified membrane also demonstrated significantly higher resistance to fouling than the control membrane, with a resistance increase from 6.78 × 10+12 to 2.07 × 10+12 m−1. This contributed to the improved separation performance of As and TDS in a cross‐flow setup. The results suggest that the GO–TETA–CuFe2O4 modified membrane has great potential for use in water treatment applications. Practitioner Points GO–TETA–CuFe2O4 was successfully used for modification of PES NF membrane structure. The efficiency of blended NF membranes with GO–TETA–CuFe2O4 significantly increased. The modified membranes exhibited significant water flux and antifouling properties. The GO–TETA–CuFe2O4/PES membranes showed high rejection of heavy metal ions and TDS than PES. The GO–TETA–CuFe2O4/PES membranes exhibited desirable antibacterial activity.

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“…Concentration polarization [24] not only reduces the flux in the FO process but also accelerates fouling. [25] RSF, a significant issue for FO membranes, is partly influenced by concentration polarization. [26] RSF occurs when the draw solute moves from the high-concentration draw solution to the low-concentration feed solution due to the concentration gradient, which is opposite the water flux direction.…”

Section: Challenges Of Forward Osmosismentioning

confidence: 99%

Electrochemically Enhanced Forward Osmosis Processes Unlocking Efficiency and Versatility

Yang,

Kim,

Ahmad

et al. 2024

ChemElectroChem

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The growing interest in forward osmosis (FO) for water reclamation and desalination over the past two decades stems from its potential for lower energy consumption. Despite its promise, FO faces significant challenges, such as the lack of an appropriate draw solute, concentration polarization, membrane fouling, and reverse solute flux (RSF). Recent trends in research have focused on combining various technologies with FO to address these challenges. Notably, the integration of electrochemical technologies with FO offers new possibilities. This review covers FO combined with electrochemical cells (FO‐ECs), categorizing them based on their working principles and applications in improving FO. The review discusses different FO‐EC configurations, including (1) electrodialysis‐combined FO for RSF, (2) electro‐FO for water flux enhancement, and (3) electrochemical oxidation‐combined FO and FO with electro‐conductive membranes for self‐cleaning and fouling mitigation. Additionally, it covers (4) reusable electro‐responsive draw solutes, (5) electrochemical osmosis systems for metal removal and energy production, and (6) osmotic microbial fuel cells for energy recovery and other benefits. The review also assesses the practical applicability and potential for achieving carbon neutrality of the FO‐ECs. It concludes with a forward‐looking perspective, outlining future research directions to optimize and expand the use of electrochemical‐enhanced FO technologies.

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Extended performance study of forward osmosis during wastewater reclamation: Quantification of fouling-based concentration polarization effects on the flux decline

Cited by 22 publications

References 56 publications

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures

Arsenic and total dissolved solids removal using antibacterial/antifouling nanofiltration membranes modified by functionalized graphene oxide and copper ferrodioxide

Electrochemically Enhanced Forward Osmosis Processes Unlocking Efficiency and Versatility

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Extended performance study of forward osmosis during wastewater reclamation: Quantification of fouling-based concentration polarization effects on the flux decline

Cited by 22 publications

References 56 publications

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O2 Pressures

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O2 Pressures

Arsenic and total dissolved solids removal using antibacterial/antifouling nanofiltration membranes modified by functionalized graphene oxide and copper ferrodioxide

Electrochemically Enhanced Forward Osmosis Processes Unlocking Efficiency and Versatility

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Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures

Fabrication of the PES Membrane Embedded with Plasma-Modified Zeolite at Different O₂ Pressures