Hab
Boom go back to your mine
Now why did I know you would dispute that
. Hmm, you say IIRC, mine is in front of me
As I had said I have 4 zeolite text books, about a total of 1400 pages :lol: Two of them give the same sequence.
pge 169, Reviews on Mineralogy. Volume 4; Mineraology and Geology of Natural Zeolites, ed by F. A. Mumpton ( one of the zeolite Gods)
You may want to look into the works of Ames LL Jr, wh come to Clino, where most where published in the 60's, in the American Mineralogist.
If the clino has a higher affinity for K than ammonia then I would not expect much good.
I would agree on that and figured you would say that. Zeolites are a very nasty and difficult mineral to study.
So we are on the same page not all sequences are necessarily the same for x type clinoptilolite
4.1. Ion exchange and adsorption
Clinoptilolite and heulandite are low field strength zeolites for which the cation specivities.
Cs+ > Rb+ > NH4 + > K+ > Na+ > Li+ > H+, and Ba2+ > Sr2+ > Ca2+ > Mg2+ are predicted [11,
12]. Corresponding theoretical estimates yielded Ba2+ > Pb2+ > Cd2+ > Zn2+ > Cu2+ [16] butexperiments revealed Pb2+ Ã"šÃ‚¡Ãƒâ€"œ Ba2+ >> Cu2+, Zn2+, Cd2+. Using clinoptilolite-Na as reference
NH4 + > Pb2+ > Na+ > Cd2+ > Cu2+ ≅ Zn2+ [14] and Pb2+ > NH4 + > Cu2+ ≅ Cd2+ > Zn2+ ≅ Co2+ >
Ni2+ > Hg2+ [15] has been determined.
From ;
http://www.krist.unibe.ch/pdf/Clinoptilolite.pdf
If you want to know about zeolites think Cs and nuclear
Do you know what the conditions were
I would bet FAB (Facultative Anaerobic Bacteria)
Since you guys are dropping abstracts;
Rhodes University Electronic Theses Collection
TR 00-89
Author Mwale, Monica
Title Ammonia removal from water by ion exchange using South African and Zambian zeolite samples
Degree M.Sc. (Ichthyology) - Rhodes University, 2000.
Abstract One problem of intensive fish culture systems is the progressive build-up of toxic wastes such as ammonia. The possibility of improving aquaculture water quality using two kinds of zeolite is discussed. Zeolites are alumino-silicates whose framework allows them to exchange cations. Ion exchange has been demonstrated to be competitive with other methods of ammonia removal due to the high selectivity for ammonia exhibited by zeolite materials. In this study an unknown Zambian zeolite (identified as laumontite by X-ray diffraction techniques) and Pratley clinoptilolite (a South African zeolite) were tested under laboratory conditions and in a fresh water recirculating system. Ammonia cation exchange capacities (CEC) and suitable application rates for efficient water treatment were determined using the batch and column ion exchange procedures. Estimated ammonia uptake, the most important criterion used to assess performance of zeolite filters was strongly influenced by zeolite type, particle size, pre-treatment, regeneration and ion exchange method used.
Statistical analysis showed significant differences in average ammonia CEC values between clinoptilolite (14.94 mg g-1) and laumontite (2.77 mg g-1), with the former displaying a higher Na+ -> NH4+ exchange rate especially in the early reaction stages. This difference accords with the higher purity of clinoptilolite, 47% as opposed to 4.7% for laumontite, which makes it a better zeolite for ammonium removal. CEC increased linearly as particle size of the clinoptilolite was reduced resulting in a linear regression model (y = 18.29 Ã"šÃ‚¨C3.704 x; r2 = 74 %). Pre-treatment of clinoptilolite using 1N NaCl significantly improved the ammonia CEC of clinoptilolite. Overall performance of both the batch and column methods achieved after regeneration (18.3 mg g-1) was 25% higher than the estimated CEC values (13.0 mg g-1) for the unregenerated samples of clinoptilolite. Comparison of CEC estimates using Pratley clinoptilolite, showed that average batch CEC estimates were significantly lower than the column method estimates. The average ammonia CEC values estimated in a fresh water recirculating system (5.80 mg g-1 and 4.12 mg g-1 for the 0.7-1.0 and 1.0-1.4 mm particle sizes, respectively) were significantly lower than the column and batch estimates for the same particle sizes (P < 0.05). Some nitrite (NO2) and nitrate (NO3) build up was experienced probably due to the growth of autotrophs in the filters. Mass balance of nitrogen (N) for the three treatments of the fish trial (0.7-1.0 mm, 1.0-1.4 mm and the control treatment that had no zeolite in the filter) indicated that less that 10% of the N was retained for growth. It was found that 60 % of the NH4-N present associated with the soluble N was available for absorption by the zeolite filter or biological nitrification and that a total of approximately 22 % of NH4-N available was absorbed by clinoptilolite. The results indicate that the rate of nitrification can be deductively estimated by allowing a zeolite filter to become a biological filter. It is concluded that water treatment by ion exchange using natural zeolites, provides a reliable and efficient method for ammonia removal and appears to be a viable supplementary water treatment method for fresh water systems.
http://www.cape.canterbury.ac.nz/webdb/Apcche_Proceedings/APCChE/Data/974REV.pdf
Better than Clino on ammonia
http://www.zeoliteproducer.com/techpapers/Ammonia removal from wastewater.pdf
This one will give you and Randy a Buzz
http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/2001/Yang_p438-447_01.pdf
Something on a clino doing its job;
Based on the results of Chelishchev et al. (1973) noted above and others, clinoptilolite may be a useful ion-exchanger for Pb, Cu, Cd, Zn and Co in the final polished step of the tertiary treatment of industrial wastewaters. Studies of exchange between Na-Clino and various alkyl-ammonium cations have revealed interesting steric and ion-sieve properties that can be readily expalined on the bases for the Merkle-Slaughter Stucture (Barrer et al., 1976). Ions small enough to enter both channels fully replace Na+ (NH4+, CH3NH3+, C2H5NH3+, (CH3)2NH2+ and n-C3H7NH3+ ); those to large to enter the 8-ting channel but small enough tp penetrate the 10-ring channel are partially exchanged ( (CH3)3NH+ and iso-C3H7NH3+ ); and the largest ions are totally excluded ( (CH3)4N+ and tetra-C4H9NH3+ ). The n-C4H9NH3+ ion, which should penetrate both the 8- and 10-ring channels is only partially replaced. In this case ( and possibly in the case of (CH3)3NH+ and iso-C3H7NH3+ ), the free volume of the alkyl ammonium cation exceeds the total free volume of the channels and exchange is therefore limited by the stereo-chemistry for the sorbent and sorbate system
Randy
I'll concede that all comments that I've seen in these articles indicate that the authors think it possible that ammonia bound to the zeolite can in some fashion be used to enhance ammonia uptake by bacteria. I'm not convinced that it is true, but it is a reasonable hypothesis
That was the theory I also gave on the Zeovit thread to Alex and Gary. I also stated that GAC could do about the same thing as your abstract stated to include other porous media.
Your are not convinced ? Why not, some "bacteria" can do such things extracellular such as Cyanobacteria
Example ( Am I stretching it here ?)
Cyano's take organic phosphate, which is hydrolyzed outside the cell by extracelluar phosphatase and the phosphorus is taken up as orthophosphate.
Hi Gary :wavehand:
Where is Alex he should be here: D
I don't know where I/we are. It seems to be up and down, I have changed my view twice in the last couple of days. It is getting more confusing :lol:
This impression stronger up year by year. 
