Effects of the Exchange Capacity and Cross-Linking Degree on the Hydration States of Anions in Quantitative Loading onto Strongly Basic Anion-Exchange Resins

2010 ◽  
Vol 82 (20) ◽  
pp. 8611-8617 ◽  
Author(s):  
Akio Yuchi ◽  
Shigeo Kuroda ◽  
Mayuu Takagi ◽  
Yuuya Watanabe ◽  
Satoshi Nakao
Keyword(s):  
Anion Exchange ◽  
Exchange Capacity ◽  
Cross Linking ◽  
Anion Exchange Resins ◽  
Basic Anion ◽  
Exchange Resins

scholarly journals Remazol Black B removal from aqueous solutions and wastewater using weakly basic anion exchange resins

2011 ◽  
Vol 9 (5) ◽  
pp. 867-876 ◽  
Author(s):  
Monika Wawrzkiewicz ◽  
Zbigniew Hubicki
Keyword(s):  
Anion Exchange ◽  
Phenol Formaldehyde ◽  
Reactive Dye ◽  
Anion Exchangers ◽  
Phase Contact Time ◽  
Anion Exchange Resins ◽  
Remazol Black B ◽  
Basic Anion ◽  
Exchange Resins ◽  
Remazol Black

AbstractIn this study, the use of the weakly basic anion exchange resins of phenol-formaldehyde (Amberlyst A 23), polyacrylate (Amberlite IRA 67) and polystyrene (Lewatit MonoPlus MP 62) matrices for removal of the reactive dye Remazol Black B (RBB) from aqueous solution and wastewater were investigated. RBB sorption on the anion exchangers was a time dependent process. Color reduction percentiles of 75.2, 33.9 and 25.1% in wastewater treatment were found after 216 h of phase contact time with Lewatit MonoPlus MP 62, Amberlyst A 23 and Amberlite IRA 67, respectively. Inorganic salts and anionic surfactant action influenced RBB uptake by the anion exchangers. The amounts of dye retained by the anion exchangers increased with a rise in temperature. The maximum sorption capacities calculated from the Langmuir model were 66.4, 282.1 and 796.1 mg g−1 for Amberlite IRA 67, Amberlyst A 23 and Lewatit MonoPlus MP 62, respectively. Regeneration of phenol-formaldehyde and polystyrene resins were possible using 1 M NaOH, 2 M KSCN, 1M KSCN in 40–60% methanol as well as 1 M NaOH in 60% methanol.

Evaluation of polyacrylic anion exchange resins on the removal of Cr(vi) from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5233-5239 ◽  
Author(s):  
Ke Xiao ◽  
Guimei Han ◽  
Jianhui Li ◽  
Zhigang Dan ◽  
Fuyuan Xu ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Anion Exchange ◽  
Exchange Capacity ◽  
Resin Matrix ◽  
Anion Exchange Resins ◽  
Exchange Resins

The polyacrylic resin is oxidized by Cr(vi) anions, resulting in the decrease of exchange capacity and degradation of the resin matrix.

scholarly journals Inside Cover: Aldol Condensations Catalyzed by Basic Anion-Exchange Resins (ChemCatChem 23/2016)

ChemCatChem ◽  
2016 ◽  
Vol 8 (23) ◽  
pp. 3558-3558
Author(s):  
Werner Bonrath ◽  
Yann Pressel ◽  
Jan Schütz ◽  
Erich Ferfecki ◽  
Klaus-Dieter Topp
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Resins ◽  
Basic Anion ◽  
Exchange Resins
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