Bromide Ion Exchange with a Keggin Polyoxometalate on Functionalized Polymeric Membranes: A Theoretical and Experimental Study

2014 ◽  
Vol 118 (9) ◽  
pp. 2396-2404 ◽  
Author(s):  
G. De Luca ◽  
F. Bisignano ◽  
A. Figoli ◽  
F. Galiano ◽  
E. Furia ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ion Exchange ◽  
Polymeric Membranes ◽  
Bromide Ion ◽  
Keggin Polyoxometalate

Experimental Study on Softening Treatment of Weak Acid Hydrogen Type Resin to Viscous Oil Sewage

2014 ◽  
Vol 535 ◽  
pp. 692-700
Author(s):  
Xiao Ge ◽  
Ying Xu ◽  
Bin Dong ◽  
Zu Wen Liu
Keyword(s):  
Experimental Study ◽  
Ion Exchange ◽  
Ph Value ◽  
Weak Acid ◽  
Production Plant ◽  
Test Results ◽  
Softening Effect ◽  
Exchange Column ◽  
Viscous Oil ◽  
Softened Water

This essay presents an experimental study about softening effect of weak acid hydrogen type resin on viscous oil sewage of an oil production plant through ion exchange technique, and the test results show that: when the first level of ion exchange column adopts weak acid hydrogen type resin and the second level adopts weak acid sodium type resin, pH value of final effluent is 6.7~7.0, and average hardness is 0.02 mg·L-1; when the first-level resin is invalid and regenerated, with washing for 12h at the flow rate of 10BV/H by softened water after acid feeding, about 50% of the weak acid hydrogen type resin is transformed into sodium type, and after being put into operation, the pH value the hardness and other indexes of the first-level and second-level effluent conform to national requirements. It is thus clear that: compared with the traditional process of the first-level exchange column adopting the weak acid sodium type resin, the first-level exchange column adopting the weak acid hydrogen type resin has better softening effect on viscous oil sewage, reduces alkali transformation steps during regeneration, and reduces alkali cost and environmental pollution.

scholarly journals Radioisotopic Tracer Technique for Characterization of Nuclear and Non-Nuclear Grade Ion Exchange Resins Tulsion A-23 and Indion-810

2013 ◽  
Vol 11 ◽  
pp. 1-5
Author(s):  
Pravin U. Singare
Keyword(s):  
Ion Exchange ◽  
Reaction Rate ◽  
Nuclear Grade ◽  
Ion Exchange Resins ◽  
Specific Reaction Rate ◽  
Experimental Conditions ◽  
Specific Reaction ◽  
Bromide Ion ◽  
Exchange Resins

In the present paper 82Br radioactive tracer isotopes was used for characterization of nuclear and non-nuclear grade ion exchange resins Tulsion A-23 and Indion-810 respectively. The bromide ion-isotopic exchange reactions were performed by equilibrating 1.000 g of conditioned resins in bromide form with labeled bromide ion solution of different concentrations ranging from 0.001 M to 0.004 M, in the temperature range of 30.0 °C to 45.0 °C. The resins were characterized by comparing the values of specific reaction rate (min-1), amount of bromide ion exchanged (mmol) and percentage of bromide ions exchanged under identical experimental conditions. It was observed that the above values decrease with rise in temperature and increases with increase in concentration of labeled bromide ion solution. From the experimental values of specific reaction rate, amount and percentage of bromide ions exchanged, it was observed that Tulsion A-23 resins are superior to Indion-810 resins under identical experimental conditions.

Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films

2021 ◽  
Author(s):  
Qingyi Huang ◽  
Zhe Li ◽  
Xiayan Chen ◽  
Yongkang Xia ◽  
Ziwei Zheng ◽  
...  
Keyword(s):  
Thin Films ◽  
Ion Exchange ◽  
Single Crystals ◽  
Anion Exchange ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Bromide Ion ◽  
Halide Perovskite

The anion exchange between MAPbX3 (X = I- or Br-) and MAX salts in solution environment is investigated. We find I- can enter MAPbBr3 single crystals (SC) in millimeter scale,...

Bromide removal by hydrotalcite-like compounds in a continuous system

2007 ◽  
Vol 56 (11) ◽  
pp. 117-122 ◽  
Author(s):  
S. Echigo ◽  
S. Itoh ◽  
M. Kuwahara
Keyword(s):  
Ion Exchange ◽  
Ion Selectivity ◽  
Drinking Water Treatment ◽  
Continuous System ◽  
Ion Exchange Resin ◽  
Exchange Reactions ◽  
Water Matrix ◽  
Water Treatment Process ◽  
Bromide Ion ◽  
Exchange Resins

Bromide ion removal from a real water matrix by hydrortalcite-like compounds (HTCs) was attempted in a column reactor to control the formation of brominated disinfection by-products in drinking water treatment process. The performance of HTCs was found to be comparable to a commercially available ion exchange resin for relatively low alkalinity water. Also, it was deduced that HTCs are better than ion exchange resins for high sulfate water because of their unique ion selectivity. In addition, the ion exchange reactions by HTCs were faster than a commercially available resin. Thus, HTCs are expected to provide similar performance to organic resins without the concern about secondary contamination (i.e., elution of organic compounds from resins).

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