The poisoning effect of mercury complexes with an anionic exchange membrane used in an electrodialysis process: a Raman study

1998 ◽  
Vol 22 (3) ◽  
pp. 233-235 ◽  
Author(s):  
Majid Chaouki ◽  
Patrice Huguet ◽  
Françoise Persin ◽  
and Jean-Luc Bribes
Keyword(s):  
Poisoning Effect ◽  
Mercury Complexes ◽  
Anionic Exchange ◽  
Raman Study ◽  
Exchange Membrane ◽  
Anionic Exchange Membrane

Study on Adsorption and Desorption Performance of Reactive Dyes on Anionic Exchange Membrane

2011 ◽  
Vol 332-334 ◽  
pp. 168-172 ◽  
Author(s):  
Tie Ling Xing ◽  
Hu Kai ◽  
Guo Qiang Chen
Keyword(s):  
Water Solution ◽  
Adsorption Model ◽  
Dynamics Model ◽  
Adsorption And Desorption ◽  
Langmuir Adsorption ◽  
Anionic Exchange ◽  
Adsorption Processes ◽  
Adsorption And Desorption Performance ◽  
Exchange Membrane ◽  
Anionic Exchange Membrane

The adsorption and desorption performance of Reactive Brilliant Red K-2BP and Reactive Brilliant Red K-2G on anionic exchange membrane were studied. The adsorption and desorption performances of anionic exchange membrane under different conditions were compared. The results showed that the adsorption accords with the pseudo-second dynamics model. Langmuir adsorption model could well describe adsorption processes. The addition of inorganic salt Na2SO4 in the dye solution had certain influence on the adsorption. The desorption percentage could reach above 80% using the mixture of ethanol, sodium chloride and water solution as desorbent, and the anionic exchange membrane could be reused.

scholarly journals Preparation of PVDF anionic exchange membrane by chemical grafting of GMA onto PVDF macromolecule

2016 ◽  
Vol 293 ◽  
pp. 56-63 ◽  
Author(s):  
Bo Tian ◽  
Xin-Yi Wang ◽  
Lin-Nan Zhang ◽  
Fa-Nian Shi ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Chemical Grafting ◽  
Anionic Exchange ◽  
Exchange Membrane ◽  
Anionic Exchange Membrane

Study on Adsorption and Desorption Performance of Direct Dyes on Anionic Exchange Membrane

2012 ◽  
Vol 550-553 ◽  
pp. 648-652
Author(s):  
Kai Hu ◽  
Jie Xu ◽  
Tie Ling Xing ◽  
Guo Qiang Chen
Keyword(s):  
Water Solution ◽  
Adsorption Model ◽  
Direct Dyes ◽  
Adsorption And Desorption ◽  
Direct Blue ◽  
Anionic Exchange ◽  
Adsorption Processes ◽  
Adsorption And Desorption Performance ◽  
Exchange Membrane ◽  
Anionic Exchange Membrane

The adsorption and desorption performance of C.I. Direct Red 13 and C.I. Direct Blue 6 on anionic exchange membrane were studied. The adsorption and desorption performances of anionic exchange membrane under different conditions were compared. The results showed that the adsorption accords with the pseudo-second dynamics model. Langmuir adsorption model could well describe adsorption processes. The addition of inorganic salt Na2SO4 in the dye solution had certain influence on the adsorption. The desorption percentage could reach above 80% using the mixture of ethanol, sodium chloride and water solution as desorbent, and the anionic exchange membrane could be reused.

Chemical modification of polysulfone: Composite anionic exchange membrane with TiO2 nano-particles

2013 ◽  
Vol 38 (12) ◽  
pp. 5115-5121 ◽  
Author(s):  
Patrick T. Nonjola ◽  
Mkhulu K. Mathe ◽  
Remegia M. Modibedi
Keyword(s):  
Chemical Modification ◽  
Nano Particles ◽  
Anionic Exchange ◽  
Exchange Membrane ◽  
Anionic Exchange Membrane

DFT Study of the CO Poisoning Effects on PdxCu1-x (110) Surface

2012 ◽  
Vol 15 (3) ◽  
pp. 151-156
Author(s):  
Ernesto López-Chávez ◽  
Alberto García-Quiroz ◽  
Yesica A. Peña-Castañeda ◽  
Fray De Landa Castillo-Alvarado ◽  
Gerardo Cabañas-Moreno ◽  
...  
Keyword(s):  
Density Functional ◽  
Proton Exchange Membrane ◽  
Co Adsorption ◽  
State Density ◽  
Proton Exchange ◽  
Pt Catalyst ◽  
Poisoning Effect ◽  
Cell Efficiency ◽  
Functional Density Theory ◽  
Exchange Membrane

CO contaminants play a significant role in modifying the performance of proton exchange membrane fuel cells (PEMFC). Pt is probably the most common catalyst being used today to absorb CO in the PEMFC, yet recent studies have shown that the use of Pd alloys such as Pd-Cu can increase the fuel cell efficiency versus a pure Pt catalyst. In this work, we examine the adsorption of CO onto PdxCu1-x (110) surfaces, with different values of x, in order to improve the CO tolerance. Understanding how molecules interact with such surfaces is the first step in understanding catalytic reactions. The study here presented was done using CASTEP, a computational code based on the plane-wave pseudopotential method of functional density theory. The surface structure of PdxCu1-x (110) was optimized and then the state density-functional, the repulsion energies and the chemisorption for CO on PdxCu1-x(110) were calculated. The results indicate that chemisorption energies of CO on PdxCu1-x are highly dependent on the concentration x of the alloy. In addition, density of states analysis indicate that the poisoning effect is partially due to the loss of Pd-Cu(d) electrons upon CO adsorption.

Investigation of thin sections of biological standards by EDX, EELS, and Auger electron spectroscopy

1990 ◽  
Vol 48 (2) ◽  
pp. 184-185
Author(s):  
S. Lehner ◽  
H.E. Bauer ◽  
R. Wurster ◽  
H. Seiler
Keyword(s):  
Processing System ◽  
Beam Current ◽  
Beam Diameter ◽  
Thin Sections ◽  
Biologically Relevant ◽  
Energy Filtering ◽  
Low Viscosity ◽  
Carbon Foils ◽  
Electron Microscopical ◽  
Exchange Membrane

In order to compare different microanalytical techniques commercially available cation exchange membrane SC-1 (Stantech Inc, Palo Alto), was loaded with biologically relevant elements as Na, Mg, K, and Ca, respectively, each to its highest possible concentration, given by the number concentration of exchangeable binding sites (4 % wt. for Ca). Washing in distilled water, dehydration through a graded series of ethanol, infiltration and embedding in Spurr’s low viscosity epoxy resin was followed by thin sectioning. The thin sections (thickness of about 50 nm) were prepared on carbon foils and mounted on electron microscopical finder grids.The samples were analyzed with electron microprobe JXA 50A with transmitted electron device, EDX system TN 5400, and on line operating image processing system SEM-IPS, energy filtering electron microscope CEM 902 with EELS/ESI and Auger spectrometer 545 Perkin Elmer.With EDX, a beam current of some 10-10 A and a beam diameter of about 10 nm, a minimum-detectable mass of 10-20 g Ca seems within reach.

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