Nanostructured anion exchange membranes based on poly(arylene piperidinium) with bis-cation strings for diffusion dialysis in acid recovery

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.

Download Full-text

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

Journal of Membrane Science ◽

10.1016/j.memsci.2021.119116 ◽

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

Download Full-text

Fabrication of asymmetrical diffusion dialysis membranes for rapid acid recovery with high purity

Journal of Materials Chemistry A ◽

10.1039/c5ta05185a ◽

2015 ◽

Vol 3 (47) ◽

pp. 24000-24007 ◽

Cited By ~ 23

Author(s):

Xiaocheng Lin ◽

Ezzatollah Shamsaei ◽

Biao Kong ◽

Jefferson Zhe Liu ◽

Tongwen Xu ◽

...

Keyword(s):

Energy Consumption ◽

Environmental Impact ◽

Anion Exchange ◽

High Purity ◽

Process Efficiency ◽

Industrial Processes ◽

Anion Exchange Membranes ◽

Acid Recovery ◽

Dialysis Membranes ◽

Diffusion Dialysis

Anion exchange membranes with fast acid permeation and high retention of salts have been fabricated to increase the process efficiency of acid recovery from various industrial processes via diffusion dialysis, thereby greatly reducing their energy consumption and environmental impact.

Download Full-text

Graphene oxide modified porous anion exchange membranes for acid recovery through diffusion dialysis

10.5004/dwt.2020.24903 ◽

2020 ◽

Vol 175 ◽

pp. 49-59

Author(s):

Wenya Liu ◽

Meng Li ◽

Mengjie Sun ◽

Xu Zhang ◽

Cuiming Wu ◽

...

Keyword(s):

Graphene Oxide ◽

Anion Exchange ◽

Anion Exchange Membranes ◽

Acid Recovery ◽

Through Diffusion ◽

Diffusion Dialysis

Download Full-text

Synthesis of Porous BPPO-Based Anion Exchange Membranes for Acid Recovery Via Diffusion Dialysis

Membranes ◽

10.3390/membranes12010095 ◽

2022 ◽

Vol 12 (1) ◽

pp. 95

Author(s):

Muhammad Imran Khan ◽

Abdallah Shanableh ◽

Majeda Khraisheh ◽

Fares AlMomani

Keyword(s):

Contact Angle ◽

Anion Exchange ◽

Exchange Capacity ◽

Porous Membranes ◽

Anion Exchange Membranes ◽

Water Contact ◽

Ion Exchange Capacity ◽

Acid Recovery ◽

Diffusion Dialysis ◽

Group Concentration

Diffusion dialysis (DD) is an anion exchange membrane-based functional separation process used for acid recovery. TMA (trimethylamine) and BPPO (brominated poly (2,6-dimethyl-1,4-phenylene oxide) were utilized in this manuscript to formulate AEMs (anion exchange membranes) for DD (diffusion dialysis) using the phase-inversion technique. FTIR (Fourier transfer infrared) analysis, proton NMR spectroscopy, morphology, IEC (ion exchange capacity), LER (linear expansion ratio), CR (fixed group concentration), WR (water uptake/adsorption), water contact angle, chemical, and thermal stability, were all used to evaluate the prepared membranes. The effect of TMA content within the membrane matrix on acid recovery was also briefly discussed. It was reported that porous AEMs have a WR of 149.6% to 233.8%, IEC (ion exchange capacity) of 0.71 to 1.43 mmol/g, CR (fixed group concentration) that ranged from 0.0046 mol/L to 0.0056 mol/L, LER of 3.88% to 9.23%, and a water contact angle of 33.10° to 78.58°. The UH (acid dialysis coefficients) for designed porous membranes were found to be 0.0043 to 0.012 m/h, with separation factors (S) ranging from 13.14 to 32.87 at the temperature of 25 °C. These observations are comparable to those found in the DF-120B commercial membrane with UH of 0.004 m/h and S of 24.3 m/h at the same temperature (25 °C). This porous membranes proposed in this paper are excellent choices for acid recovery through the diffusion dialysis process.

Download Full-text

BPPO-Based Anion Exchange Membranes for Acid Recovery via Diffusion Dialysis

Materials ◽

10.3390/ma10030266 ◽

2017 ◽

Vol 10 (3) ◽

pp. 266 ◽

Cited By ~ 10

Author(s):

Muhammad Khan ◽

Rafael Luque ◽

Pepijn Prinsen ◽

Aziz Ur Rehman ◽

Saima Anjum ◽

...

Keyword(s):

Anion Exchange ◽

Anion Exchange Membranes ◽

Acid Recovery ◽

Diffusion Dialysis

Download Full-text

Higher Acid Recovery Efficiency of Novel Functionalized Inorganic/Organic Composite Anion Exchange Membranes from Acidic Wastewater

Membranes ◽

10.3390/membranes11020133 ◽

2021 ◽

Vol 11 (2) ◽

pp. 133

Author(s):

Muhammad Imran Khan ◽

Abdallah Shanableh ◽

Noureddine Elboughdiri ◽

Karim Kriaa ◽

Djamel Ghernaout ◽

...

Keyword(s):

Anion Exchange ◽

Mechanical Stability ◽

Filler Particle ◽

Exchange Capacity ◽

Inorganic Filler ◽

Anion Exchange Membranes ◽

Trimethylammonium Chloride ◽

Severe Condition ◽

Acid Recovery ◽

Diffusion Dialysis

In this work, the synthesis of a series of the functionalized inorganic/organic composite anion exchange membranes (AEMs) was carried out by employing the varying amount of inorganic filler consist of N-(trimethoxysilylpropyl)-N,N,N-trimethylammonium chloride (TMSP-TMA+Cl−) into the quaternized poly (2, 6-dimethyl-1, 4-phenylene oxide) (QPPO) matrix for acid recovery via diffusion dialysis (DD) process. Fourier transform infrared (FTIR) spectroscopy clearly demonstrated the fabrication of the functionalized inorganic/organic composite AEMs and the subsequent membrane characteristic measurements such as ion exchange capacity (IEC), linear swelling ratio (LSR), and water uptake (WR) gave us the optimum loading condition of the filler without undesirable filler particle aggregation. These composite AEMs exhibited IEC of 2.18 to 2.29 meq/g, LSR of 13.33 to 18.52%, and WR of 46.11 to 81.66% with sufficient thermal, chemical, and mechanical stability. The diffusion dialysis (DD) test for acid recovery from artificial acid wastewater of HCl/FeCl2 showed high acid DD coefficient (UH+) (0.022 to 0.025 m/h) and high separation factor (S) (139-260) compared with the commercial membrane. Furthermore, the developed AEMs was acceptably stable (weight loss < 20%) in the acid wastewater at 60 °C as an accelerated severe condition for 2 weeks. These results clearly indicated that the developed AEMs have sufficient potential for acid recovery application by DD process.

Download Full-text