Article
Engineering, Chemical
Do Young Kim, Seungbo Ryu, Hyoung-Juhn Kim, Hyung Chul Ham, Hyuntae Sohn, Sung Pil Yoon, Jonghee Han, Tae-Hoon Lim, Jin Young Kim, Seung Woo Lee, Chang Won Yoon, Sun Hee Choi
Summary: In this study, a hydrogen-selective membrane based on asymmetric polybenzimidazole (PBI) demonstrated high permeability and permselectivity. The addition of LiCl increased polymer chain density, solution concentration, and stability of the membrane structure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Soomin Lim, Edoardo Magnone, Min Chang Shin, Jeong Won Kang, Kwan-Young Lee, Chang-Hun Jeong, Jung Hoon Park
Summary: The scalability of palladium-coated Al2O3 hollow fiber membranes for hydrogen separation was investigated. By testing different configurations and conditions, it was found that the advanced membrane module achieved higher hydrogen flux at higher temperatures and pressures, while maintaining high hydrogen purity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Chemical
Yang Liu, Zhongyun Liu, Brian E. Kraftschik, Vinod P. Babu, Nitesh Bhuwania, Daniel Chinn, William J. Koros
Summary: Raw natural gas contains impurities like H2S and CO2 which can be corrosive, but TEGMC hollow fiber membranes show efficient removal. The presence of hydrocarbons in the feed gas enhances selectivity, and competitive sorption could be a useful tool in tuning membrane performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Nicholas C. Means, Daniel J. Haynes, Robert M. Enick, Bret H. Howard, Dushyant Shekhawat
Summary: Hydrogen isotope separation can be achieved using a palladium (Pd) membrane due to the different solubility, diffusivity, and permeability of protium (H) and deuterium (D) in Pd. The permeability of H (k(H2)) and D (k(D2)) were studied at various temperatures and pressures using a Pd membrane separation unit. The selectivity of the Pd membrane towards H2 increases with temperature but decreases at higher temperatures due to the influence of competitive transport and isotope diffusion.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Pasquale Francesco Zito, Adele Brunetti, Giuseppe Barbieri
Summary: This study investigated the concentration and purification of hydrogen from multicomponent gas mixtures using simulations of multi-stage membrane configurations. The results showed that carbon and polymeric membranes in multi-stage configuration can increase the hydrogen content in the gas mixture, while Pd-alloy membranes can achieve high-purity hydrogen recovery. The integrated process of polymer/carbon membranes and Pd-alloy membranes reduces operating pressure and saves costs.
Article
Engineering, Chemical
Lu Liu, Dongxia Liu, Chen Zhang
Summary: This study demonstrates that polyimide-derived asymmetric carbon molecular sieve (CMS) hollow fiber membranes exhibit outstanding H-2/C3H8 separation performance at high temperatures, making them potentially attractive for catalytic propane dehydrogenation membrane reactors. By controlling the mixture of hydrogen and propane, stable performance of CMS membranes under high-temperature conditions can be achieved.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
S. Mazzone, A. Campbell, G. Zhang, F. R. Garcia-Garcia
Summary: This study investigates the feasibility of on-board hydrogen production using the Ammonia Cracking Hollow Fibre Converter technology. By studying the catalytic activity of ruthenium-based catalysts on carbon xerogel during the ammonia cracking reaction, it demonstrates the potential of the hollow fibre reactor to be more efficient and require less pressure drop, volume, and catalyst loading compared to a packed bed reactor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biotechnology & Applied Microbiology
Jewel Das, Harish Ravishankar, Piet N. L. Lens
Summary: The study tested the feasibility of HFMB for the biological removal of gas-phase H2S, demonstrating high removal efficiency at different ILRs. The biotic HFMBs showed significantly higher H2S flux and mass transfer compared to abiotic controls, with attached microbial growth on the membrane surface. The results confirmed that the HFMB configuration is suitable for the biological treatment of H2S-laden waste gas.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Chemical
Mingming Wang, Zhigang Wang, Xiaoyao Tan, Shaomin Liu
Summary: Highly-asymmetric metallic Ni hollow fiber membranes were fabricated using a modified phase inversion and sintering technique. By adjusting spinning conditions and sintering parameters, a hollow fiber with optimized microstructure and significantly increased hydrogen flux was achieved, demonstrating great potential for application in gas separation processes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Jun-Yi Wang, Yen-Hsun Chi, Jin-Hua Huang
Summary: Sequential addition of hydrazine in an EDTA-free bath resulted in the fabrication of high-performance composite Pd membranes with improved selectivity and cycling stability compared to membranes made using EDTA-contained bath.
Article
Green & Sustainable Science & Technology
Fernanda A. Arzani, Altamirando C. Ribeiro Neto, Natalia M. Terra, Vicelma L. Cardoso, Miria H. M. Reis
Summary: Palladium membranes are a viable option for obtaining high purity hydrogen for industrial applications. Experimental and calculated hydrogen flux data through composite palladium/alumina membranes were compared, showing that considering external mass transfer and support resistances can significantly affect the accuracy of the calculated hydrogen flux.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Engineering, Chemical
Peng Du, Jieyu Song, Xuerui Wang, Yuting Zhang, Jixian Xie, Gang Liu, Yongli Liu, Zhenwei Wang, Zhou Hong, Xuehong Gu
Summary: Efficient hydrogen separation is crucial from the cracked tail gas of ethylene plant. DD3R zeolite membranes were developed for this purpose, showing high selectivity and stability under harsh conditions. The efficient scale-up synthesis method led to the production of high-quality membranes suitable for industrial applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
R. P. H. Jong, E. Dubbelman, G. Mul
Summary: The performance of Pd-functionalized titanium hollow fibre electrodes in the electro-oxidation of propylene was investigated. The pH and applied potentials significantly affected the product distribution, with Pd dissolution and PdO2 formation playing important roles.
JOURNAL OF CATALYSIS
(2022)
Review
Energy & Fuels
Omid Jazani, Julia Bennett, Simona Liguori
Summary: The development of sustainable and new technologies based on renewable energy sources is crucial due to climate change and the depletion of fossil fuels. Hydrogen is a clean alternative that can be produced through methanol steam reforming, using methanol as an energy carrier. Membrane reactors are gaining attention as an alternative technology for carbon-low hydrogen production. This review provides an overview of recent progress in hydrogen production from methanol reforming using conventional and membrane reactors.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
Furong Li, Gangxu Duan, Zhigang Wang, Dan Liu, Yifan Cui, Sibudjing Kawi, Shaomin Liu, Xiaoyao Tan
Summary: BaCe0.7Zr0.1Y0.2O3-delta/Ni-BaCe0.7Zr0.1Y0.2O3-delta dual-layer hollow fiber membranes prepared by a co-spinning/co-sintering method can moderately control hydrogen permeation and achieve high hydrogen recovery rate in low concentration hydrogen streams.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Suelen Siqueira dos Santos, Flavia de Santana Magalhaes, Carolina Moser Paraiso, Camilla Yara Langer Ogawa, Francielle Sato, Oscar de Oliveira Santos Junior, Jesui Vergilio Visentainer, Grasiele Scaramal Madrona, Miria Hespanhol Miranda Reis
Summary: This study investigated the optimal conditions for extracting anthocyanins from blackberry pomace using ultrasound-assisted extraction (UAE) methods. The study found that UAE resulted in a significant increase in total anthocyanin content compared to conventional extraction methods. The extract contained a wide range of bioactive compounds, including anthocyanins, flavonols, and phenolic acids.
JOURNAL OF FOOD PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Tongrong Wu, Farhad Moghadam, Kang Li
Summary: In this study, nano-scale pores were created on graphene oxide nanosheets through mild chemical etching to improve water permeance and dye rejection performance in porous hollow fiber membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Hao Peng, Andrijana Minic, Kornkamol Banjerdteerakul, Kang Li
Summary: A COF-300/PVDF composite was developed as a high-performance adsorbent for PAHs removal, showing superior adsorption capacity, kinetics, and removal efficiency compared to COF-300 powders. It holds great potential for practical applications in PAHs removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Rajan Arjan Kalyan Hirani, Hong Wu, Abdul Hannan Asif, Nasir Rafique, Lei Shi, Shu Zhang, Zhentao Wu, Lai -Chang Zhang, Shaobin Wang, Yu Yin, Martin Saunders, Hongqi Sun
Summary: Membrane separation and sulfate radicals-based advanced oxidation processes (SR-AOPs) can be combined to efficiently remove organic pollutants. Immobilizing metal oxide catalysts on ceramic membranes can enhance membrane separation technology by enabling catalytic oxidation without the need for recovering suspended catalysts. Co3O4 ceramic catalytic membranes with different Co loadings were successfully fabricated and demonstrated uniform distribution of Co3O4 nanoparticles for catalytic oxidation of 4-hydroxybenzoic acid (HBA). Mechanistic studies identified both SO4 center dot- and (OH)-O-center dot as reactive radicals, with SO(4)(center dot-) playing the dominant role in the catalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Hao Peng, Vatsal Shah, Kang Li
Summary: Phase inversion plays a vital role in membrane technology for economic production of polymeric membrane and energy-saving wastewater treatment. However, existing phase inversion membranes often have low permeance, limiting their efficiency in separation processes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Kornkamol Banjerdteerakul, Farhad Moghadam, Hao Peng, Kang Li
Summary: For the first time, a new approach was proposed to prepare porous hollow fiber (HF) yttria-stabilized zirconia (YSZ) substrates with small-diameter (660-790 μm, outer diameter (OD)) by stretching the nascent HF using gravitational force. Using a delayed phase inversion, a plurality of radial micro-channels opening from the interior surface of HFs can be realized. The resultant HF substrates show promising permeation characteristics and good fracture strength, and small-diameter HF substrates with higher surface curvature ensured the fabrication of porous GO (PGO) membranes with better dye separation performance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Environmental Sciences
Karolyna Barros Miguel, Vicelma Luiz Cardoso, Miria Hespanhol Miranda Reis
Summary: We extracted and purified pigments and bioactive compounds from annatto seeds through sequential aqueous extraction and ultrafiltration processes, which exhibited significant antioxidant activity. Ultrafiltration process is a suitable alternative for concentrating bioactive compounds from the aqueous extract, although flux decay was observed due to cake formation on the membrane surface.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Engineering, Chemical
Kornkamol Banjerdteerakul, Hao Peng, Kang Li
Summary: Nanofiltration is an effective method for removing emerging pharmaceuticals from waste-water to improve water quality and mitigate environmental impacts. However, the low separation efficiency of current nanofiltration membranes has hindered their development. In this study, a thin film composite membrane was prepared by stacking covalent organic framework (COF) nanosheets on a ceramic hollow fibre, showing high rejection for environmentally persistent pharmaceuticals. The COF-based nanofiltration membranes have a small footprint and can be easily integrated into existing water treatment systems, making them a promising option for mitigating the environmental impacts of emerging pharmaceuticals in wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hengyang Mao, Peng Xu, Shouyong Zhou, Zhaoru Fan, Ailian Xue, Meisheng Li, Yijiang Zhao, Aiqin Wang, Zhentao Wu, Yiqun Fan
Summary: A facile approach is reported to produce nanofiber membranes with oriented channels, narrow pore size, and low tortuosity. Compared with unordered membranes, ordered membranes have reduced average pore size and increased water permeance. Moreover, the stationary flux of ordered membranes and the retention of oil-in-water emulsion have also increased.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Kornkamol Banjerdteerakul, Hao Peng, Kang Li
Summary: By employing an in-situ growth method, we successfully prepared COF-LZU1 and COF-300 membranes for the separation of polar/non-polar solvent mixtures. These composite membranes, consisting of a defect-free COF layer on a ceramic hollow fiber substrate, exhibited high solvent fluxes and achieved high separation factors for various azeotropic mixtures. Our study demonstrated the technical feasibility of using COF-based membranes for the separation of azeotropic solvent mixtures.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hao Peng, Kang Li
Summary: In this study, a novel approach combining non-solvent-induced phase separation (NIPS) with crystallisation and diffusion (CCD) technique, called NIPS-CCD, was proposed to enhance the permeation of polyethersulfone (PES) ultrafiltration membrane. The NIPS-CCD method showed a 50-fold increase in water permeation to 771 LMH bar-1 with pore size of 6-7 nm. This approach can be easily adapted for other high-performance membrane materials, making it a promising strategy for improving membrane permeation properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Kornkamol Banjerdteerakul, Hao Peng, Kang Li
Summary: Covalent organic frameworks (COFs) have shown potential as membrane materials for water purification and organic solvent nanofiltration due to their adjustable pore size and ease of functionalisation. However, current COF membranes are limited in their mechanical stability and structural integrity when applied on flexible polymeric substrates. In this study, COF-LZU1 membranes were fabricated on pre-designed ceramic hollow fibres using direct interfacial polymerisation, resulting in highly crystalline and defect-free COF layers. The membranes exhibited high pure water permeance and rejection rates for dyes, highlighting their potential for enhanced process intensification.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Biochemistry & Molecular Biology
Zhicheng Zhang, Wanglin Zhou, Tianlei Wang, Zhenbin Gu, Yongfan Zhu, Zhengkun Liu, Zhentao Wu, Guangru Zhang, Wanqin Jin
Summary: Ion-conducting ceramic membranes have the potential to achieve absolute selectivity for specific gases at high temperatures, making them promising for chemical production. By combining reaction and separation processes into one unit, membrane reactors can reduce by-product formation and utilize thermal effects for efficient and sustainable production. This paper provides an overview of recent developments, principles, advantages, disadvantages, and challenges in dense ceramic catalytic membrane reactors.
Article
Environmental Sciences
Igor G. F. Costa, Stella R. F. L. Ribeiro, Lucas L. Nascimento, Antonio Otavio T. Patrocinio, Vicelma L. Cardoso, Fabiana R. X. Batista, Miria H. M. Reis
Summary: Heterogenous photocatalysis with silver-decorated titanium dioxide (TiO2) catalysts supported on alumina hollow fibers showed potential for efficient Cr(VI) photoreduction in wastewater treatment. The addition of ultrasound during the synthesis process improved the distribution of Ag nanoparticles on the TiO2 surface. Higher loading of Ag nanoparticles (30 wt%) led to significant enhancement in Cr(VI) photoreduction activity of the TiO2 catalyst. Both suspended and internally or externally supported catalysts achieved complete Cr(VI) photoreduction after prolonged reaction times. However, the externally supported catalyst exhibited superior activity, especially in the initial reuse cycles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Mahesan Naidu Subramaniam, Zhentao Wu, Pei Sean Goh, Shouyong Zhou
Summary: This review article focuses on the development of composite biochar-based photocatalysts (BBP) for wastewater treatment using agricultural and poultry waste-derived biochar (BC). The synthesis techniques and properties of BC and BBP are discussed in detail. The review also explores the role of BC in enhancing the performance of BBP and its synergistic effects on the degradation of different types of pollutants. Additionally, the challenges associated with the practical application of BBP are elaborated.
JOURNAL OF CLEANER PRODUCTION
(2023)
