Layered double hydroxide and zirconium phosphate as ion exchangers for the removal of ‘black crusts’ from the surface of ancient monuments

2018 ◽  
Vol 47 (9) ◽  
pp. 2976-2985 ◽  
Author(s):  
E. Boccalon ◽  
M. Nocchetti ◽  
M. Pica ◽  
A. Romani ◽  
M. Casciola
Keyword(s):  
Layered Double Hydroxide ◽  
Zirconium Phosphate ◽  
Ion Exchanger ◽  
Ion Exchangers ◽  
Black Crusts ◽  
Innovative Tool ◽  
Ancient Monuments ◽  
Double Hydroxide

Two ion exchanger solids (LDH and ZrP) as an innovative tool to remove gypsum from ancient monuments.

Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water

2013 ◽  
Vol 1 (5) ◽  
pp. 1840-1848 ◽  
Author(s):  
Karl Mandel ◽  
Asya Drenkova-Tuhtan ◽  
Frank Hutter ◽  
Carsten Gellermann ◽  
Heidrun Steinmetz ◽  
...  
Keyword(s):  
Waste Water ◽  
Layered Double Hydroxide ◽  
Ion Exchangers ◽  
Hydroxide Ion ◽  
Double Hydroxide

Phosphate recovery from wastewater using engineered superparamagnetic particles modified with layered double hydroxide ion exchangers

2013 ◽  
Vol 47 (15) ◽  
pp. 5670-5677 ◽  
Author(s):  
Asya Drenkova-Tuhtan ◽  
Karl Mandel ◽  
Anja Paulus ◽  
Carsten Meyer ◽  
Frank Hutter ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Ion Exchangers ◽  
Hydroxide Ion ◽  
Superparamagnetic Particles ◽  
Phosphate Recovery ◽  
Double Hydroxide

Removal of Methyl Orange from Aqueous Solutions by Using Zn-Al Layered Double Hydroxide as Photocatalyst

2015 ◽  
Vol 1 (2) ◽  
pp. 36-41
Author(s):  
Laura Cocheci ◽  
◽  
Ancuta-Corina Marcu ◽  
Paul Barvinschi ◽  
Aniela Pop
Keyword(s):  
Methyl Orange ◽  
Aqueous Solutions ◽  
Layered Double Hydroxide ◽  
Double Hydroxide

Preparation of BIT-layered Double Hydroxide and the Study of Antifungal Properties

2013 ◽  
Vol 28 (9) ◽  
pp. 1025-1032 ◽  
Author(s):  
Yi-Xuan ZHANG ◽  
Song-Mei LI ◽  
Jian-Hua LIU ◽  
Mei YU
Keyword(s):  
Layered Double Hydroxide ◽  
Antifungal Properties ◽  
Double Hydroxide

Multipurpose filters with ion-exchanger for the equalization of ammonia peaks

1995 ◽  
Vol 32 (7) ◽  
pp. 199-206 ◽  
Author(s):  
Martin Oldenburg ◽  
Ivan Sekoulov
Keyword(s):  
Operation Time ◽  
Ion Exchanger ◽  
Filter Medium ◽  
Nitrification Rate ◽  
Ion Exchangers ◽  
Flow Rates ◽  
Hydraulic Loading ◽  
Influent Concentration

In this study the use of zeolites as ion-exchangers for equalization of ammonia peak loadings in aerated biological activated filters was investigated. For this use zeolites were mixed with a filter medium and the nitrifying filter was loaded with ammonia peaks for two hours at different flow rates. It could be demonstrated that during the phase of higher inflow concentrations the zeolite was collecting ammonia. When the influent concentration decreased ammonia was desorbed from the zeolite and could be nitrified by the bacteria growing on the filter medium. It was shown that additional zeolites can equalize variations of ammonia, especially in filter units which are working at a high nitrification rate and which are very sensitive to varying influent conditions. During the operation time of the filter no separation of the zeolite by higher hydraulic loading or by backwashing could be recognized. So the upgrading of nitrifying filters with zeolite represents an additional security for effluents containing oscillating ammonia concentrations.

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