Enhanced performance of novel carbon nanotubes - sulfonated poly ether ether ketone (speek) composite proton exchange membrane in mfc application

Vidhyeswari, D.; Surendhar, A.; Bhuvaneshwari, S.

doi:10.1016/j.chemosphere.2022.133560

Cited by 26 publications

(10 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ion-exchange membranes (IEMs) can be made of hydrophilic and hydrophobic homogeneous or composite [ 86 ] materials and have pores from a few nanometers to several micrometers (see reviews [ 87 , 88 ]). Their main difference from other membranes is the high concentration of polar groups.…”

Section: Modern Trends In Nutrients Recoverymentioning

confidence: 99%

“…Just as in the case of traditional methods, biochemical methods are mainly used to stabilize wastewater and convert nutrients into forms convenient for their further processing. Meanwhile, the use of osmotic [ 89 , 90 ], microfiltration and ultrafiltration polymeric and ceramic membranes [ 91 , 92 , 93 ], as well as reverse osmosis [ 94 ], nanofiltration [ 95 , 96 ], ion-exchange [ 86 ], or gas separation [ 97 ] membranes in MBRs and MMFCs allows selective and reagent-free recovery of target components even if their concentrations in liquid or gaseous phases are low. MMFCs combine two processes: the transformation of nutrients from complex organic substances into simple inorganic forms and the generation of electricity through the simultaneous implementation of redox reactions involving microorganisms.…”

Section: Modern Trends In Nutrients Recoverymentioning

confidence: 99%

See 1 more Smart Citation

Recovery of Nutrients from Residual Streams Using Ion-Exchange Membranes: Current State, Bottlenecks, Fundamentals and Innovations

2022

View full text Add to dashboard Cite

The review describes the place of membrane methods in solving the problem of the recovery and re-use of biogenic elements (nutrients), primarily trivalent nitrogen NIII and pentavalent phosphorus PV, to provide the sustainable development of mankind. Methods for the recovery of NH4+ − NH3 and phosphates from natural sources and waste products of humans and animals, as well as industrial streams, are classified. Particular attention is paid to the possibilities of using membrane processes for the transition to a circular economy in the field of nutrients. The possibilities of different methods, already developed or under development, are evaluated, primarily those that use ion-exchange membranes. Electromembrane methods take a special place including capacitive deionization and electrodialysis applied for recovery, separation, concentration, and reagent-free pH shift of solutions. This review is distinguished by the fact that it summarizes not only the successes, but also the “bottlenecks” of ion-exchange membrane-based processes. Modern views on the mechanisms of NH4+ − NH3 and phosphate transport in ion-exchange membranes in the presence and in the absence of an electric field are discussed. The innovations to enhance the performance of electromembrane separation processes for phosphate and ammonium recovery are considered.

show abstract

Section: Modern Trends In Nutrients Recoverymentioning

confidence: 99%

Section: Modern Trends In Nutrients Recoverymentioning

confidence: 99%

Recovery of Nutrients from Residual Streams Using Ion-Exchange Membranes: Current State, Bottlenecks, Fundamentals and Innovations

2022

View full text Add to dashboard Cite

show abstract

“…Moreover, the ionic conductivity of PEM will be increased by adding fillers to the polymer matrix. 25−27 Recently, a polymer composite membrane with good proton conductivity has been developed by adding fillers like metal−organic frameworks (MOFs), 28 covalent organic frameworks, 29 metal oxides, 30 ionic liquids, 31 carbon nanotubes, 32 and heteropolyacids. 33 Among them, the MOF has gained more consideration due to its tunable porous nature, thermal resistance, uniformly structured nano-and microscale cavities, and high specific surface area, which improve the proton conductivity of PEM.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Moorthy,

Deivanayagam

2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

New strategies for enhancement of the fuel-cell performance of a poly(2,5-benzimidazole) (ABPBI) membrane loaded with a functionalized cobalt-based metal−organic framework (MOF) for H 2 −O 2 fuel cells. ABPBI was prepared using the polycondensation method, and various proportions of sulfonated cobalt MOF (sCo-MOF) were incorporated into ABPBI to fabricate a proton-exchange membrane (PEM). Later, the fabricated membranes were soaked in 1 M sulfuric acid to produce sulfonated PEMs. The developed composite membranes had increased proton conductivity, tensile strength, physicochemical properties, and fuelcell performance compared to the sulfonated ABPBI (sABPBI) membrane. A membrane embedded with 4 wt % sCo-MOF shows higher water uptake and ion-exchange capacity values of 23.25% and 2.89 mequiv g −1 , respectively. The membrane electrode assemblies were fabricated to perform unit-cell tests for both sABPBI and 4 wt % sCo-MOF/sABPBI membranes. The 4 wt % sCo-MOF-loaded sABPBI membrane demonstrated good unit-cell performance in the fuelcell test, with a power density of 415.8 mW cm −2 at 80 °C, superior to the pristine sABPBI membrane's power density of 178.6 mW cm −2 .

show abstract

“…Synthetic polymers such as sulfonated polyether ether ketone (SPEEK), 7 polyether sulfone (PES), 8 poly(vinylidene fluoride) (PVDF), 9 polybenzimidazole, 10 poly(vinyl chloride) (PVC), 11 etc. have been used to prepare composite PEMs for MFCs by amendment with fillers such as carbon nanotubes, 7 cellulose nanofibers, 12 metal oxide nanoparticles, 13 graphene oxide, 8 ceramics, 11 and nanoclays. 14 Inorganic fillers improve the mechanical and dimensional stabilities of PEMs.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Composite Polymer Electrolyte Membrane for Application as a Separator in a Dual Chamber Microbial Fuel Cell

Surti,

Kailasa,

Mungray

2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The quest for developing sustainable energy devices has put microbial fuel cells (MFCs) at the forefront of research in recent years. However, the use of synthetic polymer electrolyte membranes (PEMs) such as Nafion is a compromise in the sustainability of this technology. A novel eco-friendly composite PEM has been developed using poly(vinyl alcohol) (PVA) and k-carrageenan (kC) as membrane precursors. Cation exchangers such as vermiculite and imidazole-grafted vermiculite were augmented to the base membrane PVA-kC for developing PEM, called VPC and IPC, respectively. The proton mass transfer of VPC and IPC increased by 57 and 38%, while their oxygen mass transfer decreased by 45 and 44%, respectively, with respect to PVA-kC. Double-chambered MFCs were deployed with the developed PEMs, namely, PVA-kC (PMFC), VPC (VMFC), IPC (IMFC), and commercial Nafion (NMFC), for synthetic wastewater treatment in the aerated cathode configuration and dye decolorization with a ferricyanide cathode. The highest power density of 182 mW•m −3 was obtained with VMFC, followed by IMFC (164 mW•m −3 ), NMFC (145 mW•m −3 ), and PMFC (128 mW•m −3 ), in the aerated cathode MFC. The decolorization percentage increased in the order of PMFC (49%) < NMFC (55%) < IMFC (58%) < VMFC (65%). The cation-exchanger-augmented PVA-kC membrane can be used as a suitable alternative to Nafion in MFCs.

show abstract

Enhanced performance of novel carbon nanotubes - sulfonated poly ether ether ketone (speek) composite proton exchange membrane in mfc application

Cited by 26 publications

References 34 publications

Recovery of Nutrients from Residual Streams Using Ion-Exchange Membranes: Current State, Bottlenecks, Fundamentals and Innovations

Recovery of Nutrients from Residual Streams Using Ion-Exchange Membranes: Current State, Bottlenecks, Fundamentals and Innovations

Sulfonated Cobalt Metal–Organic Framework Embedded Mixed Matrix Membrane towards Fuel-Cell Applications

Development of a Novel Composite Polymer Electrolyte Membrane for Application as a Separator in a Dual Chamber Microbial Fuel Cell

Contact Info

Product

Resources

About