Membrane Preparation and Application for Separations and Water Treatment

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Materials in Separation Science".

Deadline for manuscript submissions: closed (10 April 2023) | Viewed by 2507

Special Issue Editors

College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Interests: membrane technology; membrane fouling control; water treatment

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Guest Editor
College of Chemistry & Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, China
Interests: membrane technology; membrane preparation technique; seawater desalination; high-performance membranes

Special Issue Information

Dear Colleagues,

The current water crisis can be overcome by prioritising proper conservation and management of naturally available fresh water in conjunction with the generation of fresh water to meet the demand of all sectors. Membrane technologies are used in a broad range of applications in large-scale water and wastewater treatment processes, attributed to their remarkable features of compactness, easy automation, and high removal of contaminants with different sizes. However, a limited separation performance (i.e., permeability–selectivity trade-off), low productivity, and short membrane lifespan present severe technical challenges to membrane separation. To solve those issues, the development of membrane preparation techniques is more urgent than that of membrane materials, not only affecting physicochemical properties and the separation performance of the fabricated membranes, but also directly determining their potential for industrialized application.

This Special Issue on “Membrane Preparation and Application for Separations and Water Treatment” of the journal Separations seeks contributions assessing the state-of-the-art and future developments in the field of separation membrane preparation and applications for water and wastewater treatment. Topics include, but are not limited to, new manufacturing techniques and materials developments, and water/wastewater treatment applications, demonstration efforts, and industrial exploitation. This Special Issue accepts high-quality research articles, as well as review articles.

We look forward to inviting experts in related fields and their colleagues to submit your outstanding work for this Special Issue.

Dr. Zhun Ma
Prof. Dr. Xueli Gao
Guest Editors

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Keywords

  • separation membrane
  • membrane preparation technique
  • water/wastewater treatment
  • membrane structure
  • high-performance membranes
  • separation mechanisms
  • membrane performance

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Published Papers (1 paper)

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Research

13 pages, 2782 KiB  
Article
Study on the Performance of Cellulose Triacetate Hollow Fiber Mixed Matrix Membrane Incorporated with Amine-Functionalized NH2-MIL-125(Ti) for CO2 and CH4 Separation
by Naveen Sunder, Yeong-Yin Fong, Mohamad Azmi Bustam and Woei-Jye Lau
Separations 2023, 10(1), 41; https://doi.org/10.3390/separations10010041 - 9 Jan 2023
Cited by 5 | Viewed by 2174
Abstract
The increase in the global population has caused an increment in energy demand, and therefore, energy production has to be maximized through various means including the burning of natural gas. However, the purification of natural gas has caused CO2 levels to increase. [...] Read more.
The increase in the global population has caused an increment in energy demand, and therefore, energy production has to be maximized through various means including the burning of natural gas. However, the purification of natural gas has caused CO2 levels to increase. Hollow fiber membranes offer advantages over other carbon capture technologies mainly due to their large surface-to-volume ratio, smaller footprint, and higher energy efficiency. In this work, hollow fiber mixed matrix membranes (HFMMMs) were fabricated by utilizing cellulose triacetate (CTA) as the polymer and amine-functionalized metal-organic framework (NH2-MIL-125(Ti)) as the filler for CO2 and CH4 gas permeation. CTA and NH2-MIL-125(Ti) are known for exhibiting a high affinity towards CO2. In addition, the utilization of these components as membrane materials for CO2 and CH4 gas permeation is hardly found in the literature. In this work, NH2-MIL-125(Ti)/CTA HFMMMs were spun by varying the air gap ranging from 1 cm to 7 cm. The filler dispersion, crystallinity, and functional groups of the fabricated HFMMMs were examined using EDX mapping, SEM, XRD, and FTIR. From the gas permeation testing, it was found that the NH2-MIL-125(Ti)/CTA HFMMM spun at an air gap of 1 cm demonstrated a CO2/CH4 ideal gas selectivity of 6.87 and a CO2 permeability of 26.46 GPU. Full article
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