Direct contact membrane distillation for effective concentration of perfluoroalkyl substances – Impact of surface fouling and material stability

Chen, Xiao; Vanangamudi, Anbharasi; Wang, Jingshi; Jegatheesan, Jega V.; Mishra, Vandana; Sharma, Raghav; Gray, Stephen; Kujawa, Joanna; Kujawski, Wojciech; Wicaksana, Filicia; Dumée, Ludovic F.

doi:10.1016/j.watres.2020.116010

Cited by 48 publications

(20 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increase in permeate temperature resulted in decrease in trans-membrane driving force, hence, vapor flux decreases. The effect varies from linear to exponential depending upon the membrane module characteristics [15,35].…”

Section: Effect Of Permeate Temperaturementioning

confidence: 99%

Desalination by Membrane Distillation

Mustakeem¹,

Soukane²,

Nawaz³

et al. 2022

Distillation Processes - From Solar and Membrane Distillation to Reactive Distillation Modelling, Simulation and Optimization

View full text Add to dashboard Cite

At present, around 25% of water desalination processes are based on distillation. Similar to classical distillation, membrane distillation is a phased-change process in which a hydrophobic membrane separates two phases. Membrane distillation is considered an emerging player in the desalination, food processing and water treatment market. Due to its high salt rejection, less fouling propensity, operating at moderate temperature and pressure, membrane distillation is considered as a future sustainable desalination technology. The distillation process is quite well known in desalination. However, membrane distillation emerged a few decades ago, and a thorough understanding is needed to adapt this technique in the near future. This review chapter introduces the classical distillation and membrane distillation as an emerging technology in the desalination arena. Heat and mass transfer and thermodynamics in membrane distillation, characteristics of the performance metrics of membrane distillation are also described. Finally, the performance evaluation of MD is presented. The possibility of using low-grade heat in membrane distillation allows it to integrate directly to solar energy and industrial waste heat.

show abstract

Section: Effect Of Permeate Temperaturementioning

confidence: 99%

Desalination by Membrane Distillation

Mustakeem¹,

Soukane²,

Nawaz³

et al. 2022

Distillation Processes - From Solar and Membrane Distillation to Reactive Distillation Modelling, Simulation and Optimization

View full text Add to dashboard Cite

show abstract

“…Given the low vapor pressure of PFAS, MD allows selective permeation of water vapor across the porous membrane, which is made of hydrophobic polymers such as polyvinylidene difluoride to prevent pore wetting. Chen et al (2020) studied the suitability of DCMD to treat PFAS-contaminated waters by evaluating the DCMD performance for concentrating and removing perfluoropentanoic acid (PFPeA) on a bench-scale DCMD system using a poly(tetrafluoroethylene) (PTFE) membrane. The highest removal rate of PFPeA in this study was 85% at a feed temperature of 50 C. However, the study reported severe surface fouling leading to a decrease in rejection due to transportation of PFPeA via surface diffusion.…”

Section: Emerging Membrane Processesmentioning

confidence: 99%

Managing and treating per‐ and polyfluoroalkyl substances (PFAS) in membrane concentrates

et al. 2021

View full text Add to dashboard Cite

Per-and polyfluoroalkyl substances (PFAS), which are present in many waters, have detrimental impacts on human health and the environment. Reverse osmosis (RO) and nanofiltration (NF) have shown excellent PFAS separation performance in water treatment; however, these membrane systems do not destroy PFAS but produce concentrated residual streams that need to be managed. Complete destruction of PFAS in RO and NF concentrate streams is ideal, but long-term sequestration strategies are also employed. Because no single technology is adequate for all situations, a range of processes are reviewed here that hold promise as components of treatment schemes for PFAS-laden membrane system concentrates. Attention is also given to relevant

show abstract

“…Over the past several years, our industry has benefited from PFAS‐related optimization of commercially available adsorbents, such as activated carbon (Murray et al, 2019; M. Park et al, 2020; Son et al, 2020) and ion exchange resins (Dixit et al, 2020; Zeng et al, 2020), the application of developing adsorbents for PFAS removal (Kumarasamy et al, 2020; Stebel et al, 2019; L. Xiao et al, 2017; Yan et al, 2020; Zheng et al, 2020), and increased efficiency of PFAS separation from impacted matrices (Chen et al, 2020; Franke et al, 2019, 2021; Guo et al, 2021; Horst et al, 2018). In parallel, the commercial industry is responding to enacted regulations to remove long‐chain perfluoroalkyl acids (PFAAs) from products, such as firefighting foams and other commercial products.…”

Section: Introductionmentioning

confidence: 99%

Validation of supercritical water oxidation to destroy perfluoroalkyl acids

McDonough

Kirby

Bellona

et al. 2022

Remediation Journal

View full text Add to dashboard Cite

Some of the same unique physical and chemical properties that make per‐ and polyfluoroalkyl substances (PFAS) desirable for a wide range of commercial applications render them recalcitrant to many liquid treatment technologies. As developments in PFAS‐related toxicological studies increasingly suggest potential adverse human health effects, our industry has made great progress in the past several years on concentrating PFAS into small volume waste streams via adsorption and separation mechanisms. Coupled with residual PFAS‐containing commercial products that are being phased out, management of these concentrated waste streams presents an urgent need for the development and validation of destructive treatment technologies. Here, we field‐validate supercritical water oxidation to treat a concentrated waste stream of 12 perfluoroalkyl acids (PFAAs) with liquid and gaseous analysis, adhering to the recent Other Test Method 45 for stack emission sampling from the United States Environmental Protection Agency (USEPA) and USEPA Method 537.1, with quality control and quality assurance protocols from the Department of Defense/Department of Energy Quality Systems Manual 5.3. Results generated suggest greater than 99.999% destruction and removal efficiency of these 12 PFAAs after two ∼120‐min continuous flow trials, with an overall defluorination percentage of approximately 62.6%.

show abstract

Direct contact membrane distillation for effective concentration of perfluoroalkyl substances – Impact of surface fouling and material stability

Cited by 48 publications

References 48 publications

Desalination by Membrane Distillation

Desalination by Membrane Distillation

Managing and treating per‐ and polyfluoroalkyl substances (PFAS) in membrane concentrates

Validation of supercritical water oxidation to destroy perfluoroalkyl acids

Contact Info

Product

Resources

About