scholarly journals Porous Anion Exchange Membrane for Effective Acid Recovery by Diffusion Dialysis

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1049
Author(s):  
Jinbei Yang ◽  
Guangkai Dai ◽  
Jing Wang ◽  
Shuai Pan ◽  
Gang Lu ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Low Cost ◽  
Porous Membrane ◽  
Anion Exchange Membrane ◽  
Anion Exchange Membranes ◽  
Acid Salt ◽  
Acid Recovery ◽  
Exchange Membrane ◽  
Diffusion Dialysis ◽  
Acidic Wastewater

Diffusion dialysis (DD) employing anion exchange membranes (AEMs) presents an attractive opportunity for acid recovery from acidic wastewater. However, challenges exist to make highly acid permeable AEMs due to their low acid dialysis coefficient (Uacid). Here, a series of porous and highly acid permeable AEMs fabricated based on chloromethyl polyethersulfone (CMPES) porous membrane substrate with crosslinking and quaternization treatments is reported. Such porous AEMs show high Uacid because of the large free volume as well as the significantly reduced ion transport resistance relative to the dense AEMs. Compared with the commercial dense DF-120 AEM, our optimal porous AEM show simultaneous 466.7% higher Uacid and 75.7% higher acid/salt separation factor (Sacid/salt) when applied to acid recovery at the same condition. Further, considering the simple and efficient fabrication process as well as the low cost, our membranes show great prospects for practical acid recovery from industrial acidic wastewater.

High-performance porous anion exchange membranes for efficient acid recovery from acidic wastewater by diffusion dialysis

2021 ◽  
Vol 624 ◽  
pp. 119116
Author(s):  
Jiuyang Lin ◽  
Junming Huang ◽  
Jing Wang ◽  
Junwei Yu ◽  
Xinqiang You ◽  
...  
Keyword(s):  
Anion Exchange ◽  
High Performance ◽  
Anion Exchange Membranes ◽  
Acid Recovery ◽  
Diffusion Dialysis ◽  
Acidic Wastewater

Imidazolium functionalized anion exchange membrane blended with PVA for acid recovery via diffusion dialysis process

2016 ◽  
Vol 497 ◽  
pp. 209-215 ◽  
Author(s):  
Kamana Emmanuel ◽  
Congliang Cheng ◽  
Bakangura Erigene ◽  
Abhishek N. Mondal ◽  
Md. Masem Hossain ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Acid Recovery ◽  
Exchange Membrane ◽  
Diffusion Dialysis

Improved acid recovery performance by novel Poly(DMAEM-co-γ-MPS) anion exchange membrane via diffusion dialysis

2017 ◽  
Vol 525 ◽  
pp. 163-174 ◽  
Author(s):  
Abhishek N. Mondal ◽  
Congliang Cheng ◽  
Muhammad Imran Khan ◽  
Md. Masem Hossain ◽  
Kamana Emmanuel ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Acid Recovery ◽  
Recovery Performance ◽  
Exchange Membrane ◽  
Diffusion Dialysis

Mixed-charge poly(2,6-dimethyl-phenylene oxide)anion exchange membrane for diffusion dialysis in acid recovery

2018 ◽  
Vol 549 ◽  
pp. 543-549 ◽  
Author(s):  
Liang Wang ◽  
Fan Zhang ◽  
Zhenxing Li ◽  
Jiayou Liao ◽  
Yingda Huang ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Phenylene Oxide ◽  
Acid Recovery ◽  
Exchange Membrane ◽  
Diffusion Dialysis

scholarly journals Durability of Anion Exchange Membrane Water Electolyzers

2021 ◽  
Author(s):  
Dongguo Li ◽  
Andrew R Motz ◽  
Chulsung Bae ◽  
Cy Fujimoto ◽  
Gaoqiang Yang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Anion Exchange ◽  
Low Cost ◽  
Anion Exchange Membrane ◽  
Production Technologies ◽  
Exchange Membrane

Interest in the low-cost production of clean hydrogen is growing. Anion exchange membrane water electrolyzers (AEMWEs) are considered one of the most promising sustainable hydrogen production technologies because of their...

scholarly journals Innovative BPPO Anion Exchange Membranes Formulation Using Diffusion Dialysis-Enhanced Acid Regeneration System

Membranes ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 311
Author(s):  
Muhammad Imran Khan ◽  
Majeda Khraisheh ◽  
Fares AlMomani
Keyword(s):  
Anion Exchange ◽  
Room Temperature ◽  
Feed Solution ◽  
Exchange Capacity ◽  
Anion Exchange Membranes ◽  
Regeneration System ◽  
Waste Streams ◽  
Acid Recovery ◽  
Aqueous Waste ◽  
Diffusion Dialysis

Recycling of acid from aqueous waste streams is crucial not only from the environmental point of view but also for maturing the feasible method (diffusion dialysis). Anion exchange membrane (AEM)–based diffusion dialysis process is one of the beneficial ways to recover acid from aqueous waste streams. In this article, the synthesis of a series of brominated poly (2, 6–dimethyl-1, 4–phenylene oxide) (BPPO)-based anion exchange membranes (AEMs) through quaternization with triphenylphosphine (TPP) were reported for acid recovery via diffusion dialysis process. The successful synthesis of the prepared membranes was confirmed by Fourier transform infrared (FTIR) spectroscopy. The as-synthesized anion exchange membranes represented water uptake (WR) of 44 to 66%, ion exchange capacity of (IEC) of 1.22 to 1.86 mmol/g, and linear swelling ratio (LSR) of 8 to 20%. They exhibited excellent thermal, mechanical, and acid stability. They showed homogeneous morphology. The acid recovery performance of the synthesized AEMs was investigated in a two compartment stack using simulated mixture of HCl and FeCl2 as feed solution at room temperature. For the synthesized anion exchange membranes TPP–43 to TPP–100, the diffusion dialysis coefficient of acid (UH+) was in the range of 6.7 to 26.3 (10−3 m/h) whereas separation factor (S) was in the range of 27 to 49 at 25 °C. Obtained results revealed that diffusion dialysis performance of the synthesized AEMs was higher than the commercial membrane DF–120B (UH+ = 0.004 m/h, S = 24.3) at room temperature. It showed that the prepared AEMs here could be excellent candidates for the diffusion dialysis process.

scholarly journals Phenolphthalein Anilide Based Poly(Ether Sulfone) Block Copolymers Containing Quaternary Ammonium and Imidazolium Cations: Anion Exchange Membrane Materials for Microbial Fuel Cell

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 454
Author(s):  
Aruna Kumar Mohanty ◽  
Young-eun Song ◽  
Jung-rae Kim ◽  
Nowon Kim ◽  
Hyun-jong Paik
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Anion Exchange ◽  
Quaternary Ammonium ◽  
Anion Exchange Membrane ◽  
Anion Exchange Membranes ◽  
Good Thermal Stability ◽  
Imidazolium Cations ◽  
Membrane Morphology ◽  
Exchange Membrane

A class of phenolphthalein anilide (PA)-based poly(ether sulfone) multiblock copolymers containing pendant quaternary ammonium (QA) and imidazolium (IM) groups were synthesized and evaluated as anion exchange membrane (AEM) materials. The AEMs were flexible and mechanically strong with good thermal stability. The ionomeric multiblock copolymer AEMs exhibited well-defined hydrophobic/hydrophilic phase-separated morphology in small-angle X-ray scattering and atomic force microscopy. The distinct nanophase separated membrane morphology in the AEMs resulted in higher conductivity (IECw = 1.3–1.5 mequiv./g, σ(OH−) = 30–38 mS/cm at 20 °C), lower water uptake and swelling. Finally, the membranes were compared in terms of microbial fuel cell performances with the commercial cation and anion exchange membranes. The membranes showed a maximum power density of ~310 mW/m2 (at 0.82 A/m2); 1.7 and 2.8 times higher than the Nafion 117 and FAB-PK-130 membranes, respectively. These results demonstrated that the synthesized AEMs were superior to Nafion 117 and FAB-PK-130 membranes.

Atomic Heterointerface Engineering Breaks Activity Limitation of Electrocatalysts and Promises Highly-Efficient Alkaline Water Splitting

2021 ◽  
Author(s):  
Qiucheng Xu ◽  
Jiahao Zhang ◽  
Haoxuan Zhang ◽  
Liyue Zhang ◽  
Ling Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Anion Exchange ◽  
Low Cost ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Alkaline Water Electrolysis ◽  
Green Electricity ◽  
Alkaline Water ◽  
Highly Efficient ◽  
Exchange Membrane

Alkaline water splitting, especially the anion-exchange-membrane based water electrolysis, is an attractive way for low-cost and scalable H2 production. Green electricity-driven alkaline water electrolysis is requested to develop highly-efficient electrocatalysts...

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