Usage of anisomeric square pulse with fluctuating frequency for electrochemical generation of FeO42− in CS–CMC bipolar membrane electrolysis cell

2008 ◽  
Vol 47 (4) ◽  
pp. 708-715 ◽  
Author(s):  
Yuxi Ren ◽  
Zhen Chen ◽  
Yamin Geng ◽  
Riyao Chen ◽  
Xi Zheng
Keyword(s):  
Electrolysis Cell ◽  
Bipolar Membrane ◽  
Electrochemical Generation ◽  
Membrane Electrolysis

Electrochemical Synthesis of Hydroxyapatite Nanosheet-Assembled Porous Structures with Bipolar Membrane

2020 ◽  
Vol 841 ◽  
pp. 124-131
Author(s):  
Adrian Nur ◽  
Anatta Wahyu Budiman ◽  
Arif Jumari ◽  
Nazriati Nazriati ◽  
Fauziatul Fajaroh
Keyword(s):  
High Specific Surface Area ◽  
Electrolysis Cell ◽  
Loading Capacity ◽  
Anode Chamber ◽  
Porous Structures ◽  
Electrolysis Time ◽  
Cathode Chamber ◽  
Bipolar Membrane ◽  
Ph Increase ◽  
First Time

The porous nanostructured hydroxyapatite (HA) has the high specific surface area and loading capacity that is useful for enhancing bioactivity, sinterability, densification, and the capacity for loading the drug, protein, heavy metals, etc. For the first time, the bipolar membrane in electrochemical method was developed for the synthesis of hydroxyapatite nanosheet-assembled porous structures. The bipolar membrane was installed in the electrolysis cell to separate the cell into two chambers. The bipolar membrane prevented the OH- ions to move away from the cathode chamber and the H+ ions to go to the cathode chamber. In this condition, HA was formed in the cathode chamber while the other calcium phosphate was formed in the anode chamber. The pH increase of solution rapidly leads to more effective the formation of the nanostructured HA. The higher the electrolysis time and the current density the greater the tendency of nanostructured HA formation. The mechanism of HA hydroxyapatite nanosheet-assembled porous structures formation includes the agglomeration formation of the spherical-like particles, the formation of agglomeration nanosheet structures, and the formation of HA hydroxyapatite nanosheet-assembled porous structures.

Electro-Generation of 2, 3, 5, 6-TCP in Zn, Ni,P-mSA/mCS Bipolar Membrane Equipped Electrolysis Cell

2011 ◽  
Vol 295-297 ◽  
pp. 1074-1078
Author(s):  
Hong Fang Xie ◽  
Yan Chun Xiao ◽  
Shao Bin Li ◽  
Chen Zhen
Keyword(s):  
Cation Exchange ◽  
Current Density ◽  
Traditional Method ◽  
Alloy Layer ◽  
Electrolysis Cell ◽  
Cathode Chamber ◽  
Bipolar Membrane ◽  
Exchange Layer ◽  
Generation Technology ◽  
Zinc Nickel

P-ferrocene-SA/acetylferrocene-CS Bipolar Membrane (BPM) was prepared with phosphorylated agent as the cation exchange layer, and chitosan (CS) modified with acetylferrocene as the anion exchange layer. Zinc/Nickel alloy layer was placed on the surface of cation exchange layer to realize zero polar distance in the cathode chamber. The 2, 3, 5, 6-tetrachlopyridine (2,3,5,6-TCP) was electro-synthesized by reducing of pentachloropyridine(PCP). At the current density of 30mA·cm-2, the current efficiency was 70.1% and the yield of 2, 3, 5, 6-TCP was up to 96%. Compared with the traditional method, the electro-generation technology greatly eliminated the environmental pollution.

Treatment of Process Water Containing Heavy Metals with a Two-Stage Electrolysis Procedure in a Membrane Electrolysis Cell

2005 ◽  
Vol 5 (2) ◽  
pp. 163-168 ◽  
Author(s):  
R. Fischer ◽  
H. Seidel ◽  
P. Morgenstern ◽  
H.-J. Förster ◽  
W. Thiele ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Process Water ◽  
Electrolysis Cell ◽  
Two Stage ◽  
Membrane Electrolysis
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