Article
Engineering, Chemical
Takehiro Yamaki, Motomu Sakai, Masahiko Matsukata, Naoyuki Sakamoto, Nobuo Toratani, Sho Kataoka
Summary: Two hybrid separation processes combining membrane separation and distillation were designed for separating propane/propylene mixtures, and the separation performance was evaluated using indicators such as energy consumption and membrane area. The advantages of these hybrid separation processes were discussed.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xin Ding, Xiaohong Wang, Peng Du, Zenghu Tian, Jingxuan Chen
Summary: This paper establishes a new integrated distillation-membrane separation process solution strategy based on genetic programming for azeotrope separation. Additionally, a price evaluation method based on the theory of unit membrane area is proposed. By optimizing the separation operation using methanol-toluene as an example, the results provide a basis for the development of membrane materials in the experimental research stage.
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
Xuan Zhang
Summary: Traditional wastewater treatment technologies pay limited attention to salt management, hindering efficiency in treating high salinity wastewater; membrane technology holds promise in addressing this issue, but unique membrane development is still in its infancy; for selective separation membranes, enhanced understanding of membrane selectivity and development of cleaning strategies are needed to improve performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Kevin P. Galvin
Summary: The transition from a carbon to a metals-based economy is driving an unprecedented demand for minerals, posing a challenging process engineering task due to decreasing ore grade and environmental concerns. Recent developments with the Reflux Classifier show potential for significant improvements in separation efficiency and processing speed by applying new forces to enhance selectivity.
CHEMICAL ENGINEERING SCIENCE
(2021)
Review
Engineering, Environmental
Germain Akonkwa Mulungulungu, Tingting Mao, Kai Han
Summary: 2D g-C3N4-based membranes show good separation performance in water treatment, with high selectivity and permeability, and can remedy membrane fouling through their photocatalytic properties, allowing for long-term use.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Juanjuan Wen, Minghui Qiu, Xianfu Chen, Xiaowei Da, Yiqun Fan
Summary: A co-sintering technique is used to fabricate ZrO2 dual-layer ceramic mesoporous membranes with high separation precision and water permeance. The thickness of the sublayer can be controlled to adjust the permeance, and co-sintering reduces the fabrication cost and time. Additionally, the membrane has a high rejection rate towards SiO2 nanoparticles.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Laleh Abdollahzadeh, Masoumeh Seyfi Mazraeno, Seyed Nezamedin Hosseini, Alireza Fazlali, Ehsan Soury, Mahmoud Habibian, Maryam Khatami
Summary: Biomass particle separation in the pharmaceutical industry is challenging due to the small size and light weight of the particles. This study introduced mini-hydrocyclones as a better solution for continuous processes, achieving a higher concentration of biomass suspension in the product compared to conventional batch separation techniques.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Chunyu Li, Yuanhui Tang, Hanhan Lin, Chunhui Zhang, Ze Liu, Lixin Yu, Xiaolin Wang, Yakai Lin
Summary: A novel simulation methodology was developed to analyze the dynamics of hybrid induced phase separation (HIPS) at a multiscale level. The method combined dissipative particle dynamics (DPD), molecular dynamics (MD), and extended Maxwell-Stefan (MS) equations. The simulation results indicated that the mass transfer played a decisive role in the phase separation near the interface, resulting in an asymmetric structure with a denser polymer top layer and porous sublayer. The multiscale simulation provided deep insights into the membrane formation via the HIPS process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Thermodynamics
Y. H. Xiao, H. J. Xu, C. Y. Zhao
Summary: Membrane separation is considered the most promising carbon capture technology due to its low operating cost and easy installation. Important parameters include selectivity and permeability, with factors such as pressure, initial composition, and doped gas influencing separation efficiency. Increasing pressure ratio, CO2 mole fraction, and permeability can improve separation efficiency, while the influence of doped gas depends on permeability and gas content. Concentration polarization significantly affects membrane gas separation, with pressure and permeability analyzed for their impact on gas concentration distribution.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Surya Padinjarekutt, Huazheng Li, Shoujie Ren, Pranav Ramesh, Fanglei Zhou, Shiguang Li, Georges Belfort, Miao Yu
Summary: Cryogenic condensation is currently used to recover ammonia (NH3) in the energy-intensive Haber-Bosch (HB) process, but there is a need for more energy-efficient technologies for NH3 extraction at elevated temperature and pressure. This study demonstrates that a sodium-gated nanochannel membrane, previously known for its exclusive water conduction abilities, also shows highly selective performance for NH3. Techno-economic analysis shows that using this membrane can lead to more than 80% energy savings and a 20% reduction in net NH3 production cost in the HB process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Mei Hong, Yan Wang, Jingyu Zhang, Chunyang Bao, Xiaoling Xu, Die Li, Jing Chen, Mei Hong, Bin Peng, Qiang Zhang
Summary: Novel self-cleaning catalytic membranes were prepared by synthesizing functional copolymers with ferrocene groups, showing high catalytic activity in Fenton reactions and outstanding anti-fouling performance. These membranes were successfully applied for treatment of wastewater, providing valuable guidance for catalytic membrane research.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Ana Flavia Souza Foureaux, Victor Rezende Moreira, Yuri Abner Rocha Lebron, Lucilaine Valeria de Souza Santos, Lisete Celina Lange, Miriam Cristina Santos Amaral
Summary: Betamethasone is commonly found in surface and wastewater, posing a threat to human health and the environment. Nanofiltration has shown to be a promising method for removing BET, achieving a balance between high permeate flux and high BET retention rate.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Applied
Anne M. Gaffney, Natalie Duprez, Kelsey J. Louthan, Brianna Borders, James Gasque, Alexander Siegfried, Thomas G. Stanford, Kenneth L. Roberts, Yousif Alcheikhhamdona, Mina Hoorfar, Bo Chen, Sudip Majumdar, Hannah Murnen
Summary: Previous work by the group used a HYSYS simulator to predict the performance of an ethylene ODH production facility with alternative diluents and separation technology. The study also explored safety and operational improvements, as well as the development of membrane-based separation technology for the ODH process. Various non-cryogenic distillation alternatives were simulated and evaluated alongside membrane separation.
Article
Engineering, Chemical
Ganjar Fadillah, Kei Toda, Shin-Ichi Ohira
Summary: In this study, an enantioselective L-Phe molecularly imprinted membrane (L-Phe-MIM) was prepared via a surface grafting reaction. The membrane performances in the separation and enrichment of DL-Phe were investigated by using a continuous-flow electrodialysis system. The results showed that excellent chiral separation and high stability were achieved, with a selectivity (L/D) of 2.95 +/- 0.34.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
