Ion-Exchange Equilibrium Data in Design of a Cyclic Sea Water Softening Process

1964 ◽  
Vol 3 (3) ◽  
pp. 280-287 ◽  
Author(s):  
Gerhard Klein ◽  
Milagros Villena-Blanco ◽  
Theodore Vermeulen
Keyword(s):  
Ion Exchange ◽  
Sea Water ◽  
Exchange Equilibrium ◽  
Water Softening ◽  
Equilibrium Data ◽  
Softening Process

scholarly journals Exploiting the ion-exchange ability of titanate nanotubes in a model water softening process

2014 ◽  
Vol 591 ◽  
pp. 161-165 ◽  
Author(s):  
Dániel Madarász ◽  
Imre Szenti ◽  
András Sápi ◽  
János Halász ◽  
Ákos Kukovecz ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Titanate Nanotubes ◽  
Water Softening ◽  
Softening Process ◽  
Model Water

scholarly journals The study on preparing absorbent of potassium nickel hexacyanoferrate (II) loaded zeolite for removal of cesium from radioactive waste solutions and stable solidification method for those spent absorbents

2021 ◽  
Vol 7 (1) ◽  
pp. 28-36
Author(s):  
Quynh Luong Pham ◽  
Hoang Lan Nguyen ◽  
Van Chinh Nguyen ◽  
Huu Anh Vuong ◽  
Cao Nguyen Luu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Sea Water ◽  
Selective Adsorption ◽  
Pure Water ◽  
Decontamination Factor ◽  
Precipitation Method ◽  
Radioactive Cesium ◽  
Exchange Equilibrium ◽  
Zeolite X ◽  
Cs Ions

The development of cesium selective adsorbent is urgent subject for the decontamination of intermediate and high level water from nuclear facilities especially in nuclear accidents. For the selective adsorption and stable immobilization of radioactive cesium, K-Ni- hexacyanoferrate (II) loaded zeolite (FCzeolite) (synthesized zeolite of Hanoi University of Science and Technology) were prepared by impregnation/precipitation method. The ion exchange equilibrium of Cs+ for composites FC-zeolite was attained within 5 h and estimated to be above 97% in Cs+ 100mg/l solution at pH: 4-10. Ion exchange capacity of Cs+ ions (Qmax) for FC-zeoliteX was reached 158.7 and 98.0 mg/g in pure water and sea water respectively.Those values for FC-zeolite A was 103.1 and 63.7 mg/g. Decontamination factor (DF) of FC-zeolite X for 134Cs was 149.7 và 107.5 in pure water and sea water respectively. Initial radioactivity of 134Cs ion solution infect to decontamination factor. KNiFC-zeolite X after uptaked Cs (CsFC- zeolite X) was solidificated in optimal experimental conditions: Mixing CsFC-zeolite X with additive of Na2B4O7 (5%), temperature calcined 900oC for 2h in air. Solid forms was determined some of parameters: Cs immobilization, mechanical stability, volume reduction after calcination (%) and leaching rate of Cs+ ions in solution.

FTIR ANALYSIS OF ION EXCHANGE RESINS WITH APPLICATION IN PERMANENT HARD WATER SOFTENING

2014 ◽  
Vol 13 (9) ◽  
pp. 2145-2152 ◽  
Author(s):  
Liliana Lazar ◽  
Laura Bulgariu ◽  
Bogdan Bandrabur ◽  
Ramona-Elena Tataru-Farmus ◽  
Mioara Drobota ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Hard Water ◽  
Ion Exchange Resins ◽  
Ftir Analysis ◽  
Water Softening ◽  
Exchange Resins

Maize Stalk as Natural Ion Exchanger for Hazardous Pollutants

2017 ◽  
Vol 68 (8) ◽  
pp. 1726-1731
Author(s):  
Nicoleta Mirela Marin ◽  
Luoana Florentina Pascu ◽  
Ioana Stanculescu ◽  
Ovidiu Iordache ◽  
Denisa Jianu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Kinetic Models ◽  
High Selectivity ◽  
Ion Exchanger ◽  
Exchange Equilibrium ◽  
Waste Waters ◽  
Cationic Species ◽  
Hazardous Pollutants ◽  
Tailing Ponds

This paper recommends maize stalk as a cheap natural ion exchanger. Ion exchange equilibrium was studied using thermodynamic and kinetic models. The results showed a high selectivity towards cationic species of antimony (III), molybdenum (VI), lead (II) and arsenium (III). Waste waters and sediments from tailing ponds samples were analysed.

pH dependence of ion-exchange equilibrium of proteins

AIChE Journal ◽  
1998 ◽  
Vol 44 (11) ◽  
pp. 2399-2409 ◽  
Author(s):  
J. C. Bosma ◽  
J. A. Wesselingh
Keyword(s):  
Ion Exchange ◽  
Ph Dependence ◽  
Exchange Equilibrium

scholarly journals Chromium removal from industrial wastewater using Phyllostachys pubescens biomass loaded Cu-S nanospheres

2018 ◽  
Vol 16 (1) ◽  
pp. 842-852 ◽  
Author(s):  
Tian Ai ◽  
Xiaojun Jiang ◽  
Qingyu Liu
Keyword(s):  
Ion Exchange ◽  
Internal Surface ◽  
Freundlich Isotherm ◽  
Phyllostachys Pubescens ◽  
Mechanism Analysis ◽  
Adsorption Mode ◽  
Modification Method ◽  
Equilibrium Data ◽  
Isotherm Equations ◽  
Complex Copper

AbstractIn this paper, a new surface modification method was reported for the preparation of Phyllostachys pubescens powder as an effective adsorbent for the removal of chromium. Complex copper sulfide (Cu-S)nanospheres were evenly dispersed and loaded into the internal surface of the adsorbent, which provided both the ion exchange and oxidative-reductive properties. The composite showed an excellent adsorption efficacy for Cr(III) and Cr(VI). The surface properties of the obtained materials were characterized by FTIR and SEM. Maximum adsorption for Cr(III) and Cr(VI) was observed at pH 6.1 and 1.9, respectively. The experimental sorption equilibrium data were modeled using Langmuir and Freundlich isotherm equations. It was found that the maximum adsorption capacities of Cr(III) and Cr(VI) were 52.30 mg g-1 and 94.25 mg g-1, respectively. The adsorption mechanism analysis inferred that the major adsorption mode of Cr(III) was ion exchange, and Cr(VI) was oxide-reduction.

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