Fouling characterisation in PVDF membrane contactors for dissolved methane recovery from anaerobic effluents: effect of surface organofluorosilanisation

Article Engineering, Chemical

Enhanced anti-wetting and anti-fouling properties of composite PFPE/ PVDF membrane in vacuum membrane distillation

Jun Pan et al.

Summary: The composite hydrophobic PFPE/PVDF membranes show promising anti-fouling and anti-wetting performance, making them highly suitable for membrane distillation and membrane crystallization applications.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Engineering, Chemical

Recovery of dissolved methane through a flat sheet module with PDMS, PP, and PVDF membranes

R. Jimenez-Robles et al.

Summary: This study investigates the performance of commercial polymer membranes in recovering dissolved methane from water using a flat sheet membrane module degassing contactor. The results show that the mass transfer resistance mainly occurs in the liquid phase. Microscopy and contact angle measurements are used to monitor the structural and surface stability of the membranes during operation. This combination of techniques proves to be versatile and useful in tracking the changes in membrane properties.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Biochemistry & Molecular Biology

Hollow-Fiber Membrane Contactor for Biogas Recovery from Real Anaerobic Membrane Bioreactor Permeate

Qazi Sohaib et al.

Summary: This study demonstrates the application of hollow-fiber membrane contactors for biogas recovery from the ultrafiltration permeate of an anaerobic membrane bioreactor and synthetic effluents. The membrane degassing unit was able to efficiently recover dissolved CH4 and CO2, with the efficiency depending on the gas to liquid ratio.

MEMBRANES (2022)

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Article Engineering, Chemical

Membrane distillation treatment of landfill leachate: Characteristics and mechanism of membrane fouling

Zhongsen Yan et al.

Summary: In this study, the membrane fouling in landfill leachate treatment by membrane distillation was systematically investigated. It was found that the increase of feed pH enhanced the deprotonation of carboxyl groups in organic matter, contributing to the formation of organo-inorganic complexation, which might be the main cause of membrane fouling in alkaline feed condition.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Biochemistry & Molecular Biology

Flat PVDF Membrane with Enhanced Hydrophobicity through Alkali Activation and Organofluorosilanisation for Dissolved Methane Recovery

Ramon Jimenez-Robles et al.

Summary: The three-step surface modification process increased the water contact angle of the PVDF membrane, but showed limited durability in long-term stability tests. Additionally, the modification procedure increased the dissolved methane removal efficiency but also led to fouling.

MEMBRANES (2022)

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Review Engineering, Environmental

A review on recent progress in environmental applications of membrane contactor technology

Amir Mansourizadeh et al.

Summary: Membrane contactor, as a cost-effective and high-performance separation technology, has gained significant attention in environmental protection. This article provides a brief introduction to membrane contactor processes and comprehensively reviews the latest progress in environmental applications, such as greenhouse gas capture and water and wastewater treatments. The current status and future direction of the technology are highlighted to guide industrial implementation.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

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Article Engineering, Chemical

Simultaneous application of vacuum and sweep gas in a polypropylene membrane contactor for the recovery of dissolved methane from water

R. Jimenez-Robles et al.

Summary: The combination mode of using vacuum and nitrogen as sweep gas in a microporous polypropylene membrane contactor showed higher efficiency for the recovery of dissolved methane from water compared to using vacuum or sweep gas separately. To maximize energy output, operation under specific G/L ratios and vacuum conditions is needed.

JOURNAL OF MEMBRANE SCIENCE (2021)

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Review Engineering, Chemical

Biofouling in membrane distillation applications-a review

Flavia C. R. Costa et al.

Summary: This paper reviews the concept of biofilm, its components and development stages, and the impact of microbial community succession on biofilm development in membrane distillation (MD). It also discusses how operational factors like temperature affect biofouling formation in MD, and the consequences of biofilm on MD performance. Possibilities for mitigating biofouling in MD are presented, along with discussions on challenges and future research directions.

DESALINATION (2021)

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Article Engineering, Chemical

Wetting- and fouling-resistant hollow fiber membranes for dissolved methane recovery from anaerobic wastewater treatment effluents

G. S. M. D. P. Sethunga et al.

Summary: Anaerobic wastewater treatment processes are increasingly popular due to their advantages in sludge management and net energy consumption, with methane production being a major benefit. Utilizing porous membranes for membrane contactor (MC) process offers a promising way to recover dissolved methane (dCH4) from anaerobic effluents, although membrane wetting and fouling remain implementation challenges. The development of wetting- and fouling-resistant hollow fiber membranes coated with polydimethylsiloxane (PDMS) and post-treated with PDMS-based amphiphilic copolymers shows improved performance in recovering methane from anaerobic effluents, making it a viable alternative for industrial practices.

JOURNAL OF MEMBRANE SCIENCE (2021)

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Review Green & Sustainable Science & Technology

Dissolved methane in anaerobic effluents: A review on sustainable strategies for optimization of energy recovery or internal process reuse

Valentina Stazi et al.

Summary: The growth of interest in public health and environmental protection is leading to a closer look at anaerobic wastewater treatment as a sustainable and energy-efficient alternative to aerobic treatment methods. Strategies for recovering dissolved CH4 as an energy source, along with biological oxidation methods, are key to achieving energy-neutral anaerobic treatment. This review highlights the importance of understanding and optimizing technologies for dissolved CH4 recovery in wastewater treatment processes.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Environmental Sciences

The fouling layer development on MD membrane for water treatments: An especial focus on the biofouling progress

Lin Chen et al.

Summary: This study evaluated the fouling development of membrane distillation (MD) treating different feed waters from local water bodies and found that inorganic matters in feed waters influenced the attachment of salt crystals to the membrane, while the types and amounts of microorganisms on the membrane varied.

CHEMOSPHERE (2021)

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Understanding the fouling/scaling resistance of superhydrophobic/omniphobic membranes in membrane distillation

Li Liu et al.

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DESALINATION (2021)

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Review Engineering, Chemical

Engineering antifouling reverse osmosis membranes: A review

Shuaifei Zhao et al.

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DESALINATION (2021)

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Article Chemistry, Multidisciplinary

Membrane Contactors for Maximizing Biomethane Recovery in Anaerobic Wastewater Treatments: Recent Efforts and Future Prospect

Yechan Lee et al.

Summary: Gas-liquid membrane contactors are a promising technology for recovering dissolved methane from wastewater, but face challenges like membrane wetting and fouling that hinder efficient CH4 recovery.

APPLIED SCIENCES-BASEL (2021)

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Review Engineering, Environmental

State-of-the-art management technologies of dissolved methane in anaerobically-treated low-strength wastewaters: A review

Xuesong Li et al.

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WATER RESEARCH (2021)

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Review Environmental Sciences

A focused review on membrane contactors for the recovery of dissolved methane from anaerobic membrane bioreactor (AnMBR) effluents

Perlie Velasco et al.

Summary: The article provides a review of studies on the production of dissolved methane from AnMBR and explores the use of membrane technology or membrane contactors in recovering dissolved methane from AnMBR effluent. The focus is on developing more economical methods for resource recovery through membrane modifications.

CHEMOSPHERE (2021)

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Article Environmental Sciences

Widening the applicability of AnMBR for urban wastewater treatment through PDMS membranes for dissolved methane capture: Effect of temperature and hydrodynamics

Pau Sanchis-Perucho et al.

Summary: AnMBR technology shows promise for urban wastewater treatment, but the loss of dissolved methane poses environmental challenges. This study explores the use of temperature and hydrodynamics to improve methane capture efficiency in AnMBR effluents. Improving recovery efficiency can enhance energy production and environmental sustainability of the technology.

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PDMS membranes for feasible recovery of dissolved methane from AnMBR effluents

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Fluorinated PDMS membrane with anti-biofouling property for in -situ biobutanol recovery from fermentation-pervaporation coupled process

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Investigating the effect of various foulants on the performance of intrinsically superhydrophobic polyvinylidene fluoride membranes for direct contact membrane distillation

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Fouling characterisation in PVDF membrane contactors for dissolved methane recovery from anaerobic effluents: effect of surface organofluorosilanisation

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