scholarly journals Optimized cesium and potassium ion-exchanged zeolites A and X granules for biogas upgrading

RSC Advances ◽  
2018 ◽  
Vol 8 (65) ◽  
pp. 37277-37285 ◽  
Author(s):  
Kritika Narang ◽  
Kristina Fodor ◽  
Andreas Kaiser ◽  
Farid Akhtar
Keyword(s):  
Ion Exchange ◽  
Potassium Ion ◽  
Zeolite A ◽  
Uptake Capacity ◽  
Biogas Upgrading ◽  
Zeolites A And X

Ion exchange of binderless zeolite A and X granules leads to high CO2/CH4 selectivity and CO2 uptake capacity.

Removal of Mg from spring water using natural clinoptilolite

Clay Minerals ◽  
2012 ◽  
Vol 47 (1) ◽  
pp. 81-92 ◽  
Author(s):  
S. Tomić ◽  
N. Rajić ◽  
J. Hrenović ◽  
D. Povrenović
Keyword(s):  
Ion Exchange ◽  
Kinetic Studies ◽  
Spring Water ◽  
Zeolite A ◽  
Zeolitic Tuff ◽  
Rate Limiting Step ◽  
Intra Particle Diffusion ◽  
Pseudo Second Order ◽  
Natural Clinoptilolite ◽  
Rate Limiting

AbstractNatural zeolitic tuff from Brus (Serbia) consisting mostly of clinoptilolite (about 90%) has been investigated for the reduction of the Mg concentration in spring water. The sorption capacity of the zeolite is relatively low (about 2.5 mg Mg g-1for the initial concentration of 100 mg Mg dm-3). The zeolitic tuff removes Mg from water solutions by ion exchange, which has been demonstrated by energy dispersive X-ray analysis (EDS). The extent of ion exchange was influenced by the pH and the initial Mg concentration. Kinetic studies revealed that Lagergen's pseudo-second order model was followed. Intra-particle diffusion of Mg2+influenced the ion exchange, but it is not the rate-limiting step. Rather than having to dispose of the Mg-loaded (waste) zeolite, a possible application was tested. Addition to a wastewater with a low concentration of Mg showed that it could successfully make up for the lack of Mg micronutrient and, accordingly, enabled the growth of phosphate-accumulating bacteriaA. Junii, increasing the amount of phosphate removed from the wastewater.

Ion Exchange Kinetics in Zeolite A

1985 ◽  
pp. 345-369 ◽  
Author(s):  
D. Drummond ◽  
A. Jonge ◽  
L. V. C. Rees
Keyword(s):  
Ion Exchange ◽  
Zeolite A ◽  
Ion Exchange Kinetics ◽  
Exchange Kinetics

Applicability of immobilized wood-rotting fungal biomass for biosorption of basic dye Alcian Blue

2009 ◽  
Vol 59 (10) ◽  
pp. 2073-2079 ◽  
Author(s):  
N. S. Maurya ◽  
Atul K. Mittal
Keyword(s):  
Ion Exchange ◽  
Alcian Blue ◽  
Sorption Mechanism ◽  
Uptake Capacity ◽  
Batch Mode ◽  
Basic Dye ◽  
Dye Sorption ◽  
Equilibrium Data ◽  
Potential Applicability ◽  
Acetic Acids

In this study potential applicability of immobilised biomass of a wood-rotting dead macro-fungus Fomitopsis carnea are explored for the removal of the basic dye Alcian Blue. Effect of several parameters viz., temperature, pH and salt were studied in batch mode. In view of reutilization of the dye as well as the biosorbent, desorption/regeneration experiments were conducted. Desorption/regeneration studies could also be helpful in determining dye sorption mechanism. Studies indicate that the immobilized biosorbent could remove Alcian Blue efficiently. The experimental equilibrium data were modeled using the Langmuir equation. Dye uptake capacity of the biosorbent was observed to increase with rise in temperature and indicates chemisorption and/or ion exchange. The uptake was 11.1, 13.2, 16.4 and 24.2 mg/g at 10, 20, 30 and 40°C respectively. Higher removal of dye was also observed at higher pH. However, increased salt concentration from 0 mmol/L to 100 mmol/L reduced from 89 to 85%. Desorption of dye could be possible up to 51% using 0.1 M hydrochloric/acetic acids and thus suggests that ion-exchange and chemisorption could be the possible dye sorption mechanism.

The Ion-Exchange Property of Some Layered Inorganic Materials with Potassium Ion, Rubidium Ion and Cesium Ion, and Selective Cesium Ion-Exchange of Synthetic Mica

2000 ◽  
Vol 73 (11) ◽  
pp. 2599-2603 ◽  
Author(s):  
Noriko Suzuki ◽  
Daisuke Yamamoto ◽  
Noriko Anaguchi ◽  
Hiroko Tsuchiya ◽  
Kumi Aoki ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Potassium Ion ◽  
Inorganic Materials ◽  
Exchange Property ◽  
Synthetic Mica ◽  
Cesium Ion

Mössbauer spectroscopic studies of ferrous ion-exchange in zeolite A

Zeolites ◽  
1982 ◽  
Vol 2 (2) ◽  
pp. 72-78 ◽  
Author(s):  
Zi Gao ◽  
Lovat V.C. Rees
Keyword(s):  
Ion Exchange ◽  
Spectroscopic Studies ◽  
Ferrous Ion ◽  
Zeolite A

Xenon-129 NMR spectrum of xenon in the .alpha.-cage of zeolite A during hydration and ion exchange

1993 ◽  
Vol 97 (16) ◽  
pp. 4124-4127 ◽  
Author(s):  
Ryong Ryoo ◽  
Louis Charles de Menorval ◽  
Ja Hun Kwak ◽  
Francois Figueras
Keyword(s):  
Ion Exchange ◽  
Zeolite A ◽  
Nmr Spectrum
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