Research on Characterization and Application of High-Performance Ion Exchange Material

2013 ◽  
Vol 652-654 ◽  
pp. 1704-1709
Author(s):  
Qiong Qiong Liu ◽  
Xin Tan ◽  
Xiao Long Shao
Keyword(s):  
Ion Exchange ◽  
High Performance ◽  
Ammonia Nitrogen ◽  
Exchange Capacity ◽  
Raw Material ◽  
Ammonium Ion ◽  
Ion Exchange Capacity ◽  
Feature Evaluation ◽  
Modification Process ◽  
Exchange Material

The object of this research is to investigate the removal of nitrogen in the form of ammonium ion (NH4+-N) from aqueous solutions using Na-form of high-performance ammonium ion-exchange material. The Chinese Kaolin from the province of Guangzhou is used as the raw material and modified to prepare the ion-exchange materials. According to CEC measurement, the obtained ammonium ion-exchange material had an ammonium ion exchange capacity greater than 75mgNH4+-N/g and can be used to remove ammonia nitrogen in water treatment. In this paper, several surface feature evaluation methods（SEM、XPS、IR）are used to discuss and analyze the modification process of kaolin and the action mechanism and modification results of the ammonia ion exchange material.

Experimental Study on the Ammonium Ion-Exchange Material and its Removal of Ammonia Nitrogen from Water

2011 ◽  
Vol 183-185 ◽  
pp. 1558-1562 ◽  
Author(s):  
Qiong Qiong Liu ◽  
Xin Tan ◽  
Lin Zhao
Keyword(s):  
Kinetic Model ◽  
Ion Exchange ◽  
High Performance ◽  
Reaction Kinetic ◽  
Ammonia Nitrogen ◽  
Exchange Capacity ◽  
Raw Material ◽  
Ammonium Ion ◽  
Reaction Kinetic Model ◽  
Exchange Material

Washed kaolin produced in Maoming, Guangzhou was used as the raw material and NaOH and NaAlO2were used as the modifiers to prepare a high-performance deaminating material by providing kaolin with sodium-type exchange groups through modification and calcination. Then the ammonia ion exchange capacity of this material was studied by means of Cation Exchange Capacity (CEC) determination. Research has also been done on the conditions for the preparation of this material, the factors that influence the result of the removal of ammonia nitrogen from water by this material, and the ammonia nitrogen removal rate of this material. In this study , an extruding-rounding process to make the powder material into 1-2mm grains and studied the forming process of the grains. Research results show that: The ammonia exchange capacity of the prepared material was greater than 70 mg NH4+-N/g. Laboratory static ammonia nitrogen experiment showed that the high-performance ammonia deaminating material could remove 90% of the ammonia nitrogen from water and were qualified for the removal of ammonia nitrogen in water treatment processes. Through the establishment of Pseudo-first reaction kinetic model and Pseudo-second reaction kinetic model of modified of kaolin absorption on NH4+, we can see that the adsorption of ammonia nitrogen in water by this ammonium ion-exchange material matches the pseudo-second-order reaction.

Clinoptilolite: a possible support material for nitrifying biofilms for effective control of ammonium effluent quality?

2005 ◽  
Vol 51 (11) ◽  
pp. 63-70 ◽  
Author(s):  
H. Inan ◽  
B. Beler Baykal
Keyword(s):  
Ion Exchange ◽  
High Capacity ◽  
Exchange Capacity ◽  
Quality Data ◽  
Ammonium Ion ◽  
Effective Control ◽  
Support Material ◽  
Ion Exchange Capacity ◽  
Effluent Quality ◽  
Peak Loads

Ammonium selective natural zeolite clinoptilolite is suggested as a possible support material for nitrifying biofilms to help improve effluent ammonium quality through its high capacity of ammonium removal in the process of ion exchange. This will especially be helpful in cases where the biofilter receives peak or variable loads routinely or occasionally. At the time of peak loads or shocks of ammonium, ion exchange capacity will provide a buffer for the effluent ammonium quality. Data to support this suggestion is presented.

Comparison of Nitrification of ZBAF According to Ammonia Nitrogen Ion Exchange Capacity of Zeolite Media

2020 ◽  
Vol 28 (2) ◽  
pp. 3-11
Author(s):  
Jin-Su Kim ◽  
Seung-Kyu Choi ◽  
Qian Zhu ◽  
Gwan-woo Shin ◽  
Chang-Hwan Yang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Ammonia Nitrogen ◽  
Exchange Capacity ◽  
Ion Exchange Capacity ◽  
Nitrogen Ion

An experimental study of sorption properties of natural zeolite-containing rocks and their ability for purification of aquatic solutions contaminated with Ni and Zn

2020 ◽  
Author(s):  
Liudmila Kolmykova ◽  
Valentina Nikashina ◽  
Elena Korobova
Keyword(s):  
Ion Exchange ◽  
Natural Zeolite ◽  
Natural Waters ◽  
Distribution Coefficients ◽  
Exchange Capacity ◽  
Ammonium Ion ◽  
Geochemical Barrier ◽  
Solid Domestic Waste ◽  
Ion Exchange Capacity ◽  
Model Solutions

<p>Sorption parameters of natural zeolite-containing tripolite from the Khotynetsky deposit (Russia, Oryol region) were studied in a series of experiments to evaluate possibility of its usage as a geochemical barrier for teсhnogenic Ni<sup>2+</sup> and Zn<sup>2+</sup> contaminating soils and ground waters. <br>Firstly, the tripolite total ion-exchange capacity was established by its saturation with ammonium ion and evaluating its content in the initial and ammonium forms with the help of X-ray fluorescence method. Secondly, the kinetic characteristics, namely the time necessary to reach the equilibrium state of the rock-water system containing Ni<sup>2+</sup> and Zn<sup>2+</sup> ions were determined in batch experiments using the method of "limited volume". The latter experiment was conducted using 0.5 g tripolite with 250 ml model solutions simulating natural river water (0.003 н CaCl<sub>2</sub>) and filtration water from solid domestic waste landfill (0.06 н CaCl<sub>2</sub>) and containing  2 mg/l Ni<sup>2+</sup> and  Zn<sup>2+</sup>. The time of contact between the sorbent and the model solution varied from 2 hours to 21 days. Thirdly, basing on reference data on the real content of heavy metals in the filtrates of various landfills, an experiment on determination of the tripolite equilibrium exchange (and adsorption) capacity was carried out. The prepared model solutions in the latter experiment contained 2, 5, 7 and 10 mg/l of Ni<sup>2+</sup> and Zn<sup>2+</sup>. The amount of Ni<sup>2+</sup> and Zn<sup>2+  </sup>in solutions was determined by the ICP-AES.<br>According to the obtained results, the total ion-exchange capacity of the natural tripolite equaled to 1.18 mg-eq/g. The sorption isotherms based on kinetic experiments showed that equilibrium in the studied rock-solution system took place after 200 to 500 hours of interaction. Despite natural scattering of experimental points in the range of the used Ni<sup>2+</sup> and Zn<sup>2+</sup> concentrations in the third experiment which lasted 21 days, the sorption of the studied ions by the natural tripolite can be approximated by a linear isotherm, zinc being sorbed much better than nickel. The average values of distribution coefficients (Kd) obtained for 0.003 n CaCl<sub>2</sub> aquatic solution equaled to 2.7*103 ml/g for Ni<sup>2+</sup> and 6.7*103 ml/g for Zn<sup>2+</sup>.<br>Therefore, natural tripolite of the Khotinetsky deposit may well be used as a natural geochemical barrier for extraction of technogenic Ni<sup>2+</sup> and Zn<sup>2+</sup> from natural waters draining landfills and contaminated by these ions.</p><p> </p>

scholarly journals Graphitic Carbon Nitride based Photocatalytic Systems for High Performance Hydrogen Production: A Review

2021 ◽  
pp. 161-192
Author(s):  
S. Sharma
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Ion Exchange ◽  
Distribution Coefficient ◽  
High Performance ◽  
Sol Gel ◽  
Exchange Capacity ◽  
Ion Exchange Capacity ◽  
E Coli ◽  
Scanning Electron

Pectin cerium(IV) iodate (PcCeI) and cerium(IV) iodate (CeI) cation ion exchange materials were synthesized via sol–gel methods. The materials were characterized by using Fourier transform infrared spectroscopy, X-ray diffractometer, thermogravimetric analysis, and scanning electron microscopy. The ion exchange capacity (IEC), thermal stability, distribution coefficient (Kd), and pH titrations were investigated to recognize the cation exchange behavior of the materials. The IEC of pectin-cerium(IV) iodate (PcCeI and cerium(IV) iodate CeI were reported as 1.80 meq/g and 0.92 meq/g, respectively. The higher distribution coefficient values of 250.01 and 219.14 mg/L confirmed the selectivity of pectin-cerium(IV) iodate hybrid ion exchanger for As3+ and Zn2+. The antibacterial activity of synthesized ion exchangers was explored for E. coli bacteria and observed relatively higher for PcCeI as compared to CeI.

Ion exchange capacity of zeolite A with zinc nitrate and its antimicrobial activity

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Harnish Kaur Kartar Singh ◽  
Zarina Amin ◽  
Sazmal Effendi Arshad
Keyword(s):  
Antimicrobial Activity ◽  
Ion Exchange ◽  
Nitrate Solution ◽  
Zinc Content ◽  
Zinc Ion ◽  
Zinc Nitrate ◽  
Exchange Capacity ◽  
Raw Material ◽  
Zeolite A ◽  
Ion Exchange Capacity

AbstractVarious type of zeolites has been produced based on kaolinite and this study likewise utilized kaolin clay as raw material to synthesis zeolite A. Kaolin was in inactive state, therefore it was transformed to metakaolin through dehydroxylation at 800 °C for 4 h. The metakaolin as a source of silica and alumina was then utilized in the synthesis of zeolite A. After hydrothermal synthesis, the zeolite A was exchanged with different concentration of zinc nitrate solution. Zinc content in ion-exchanged zeolite A, ZnA was determined through AAS to calculate the ion exchange capacity. Higher concentration of zinc nitrate had higher zinc content and higher ion exchange capacity. Zeolite A and zinc-exchanged zeolite A were characterized under SEM, XRD and FTIR. Finally, zeolite A and zinc-exchanged zeolite A was used to investigate the antimicrobial properties against gram-negative bacteria, Escherichia coli and gram-positive bacteria Staphylococcus aureus. There was no antimicrobial activity for zeolite A yet zinc-ion–exchanged zeolite A showed inhibition zones around the samples for both the microorganisms.

scholarly journals Removal of Ammonium Ions from Aqueous Solutions Using Weathered Halloysite

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4359
Author(s):  
Jacek Leszczyński
Keyword(s):  
Ion Exchange ◽  
Natural Waters ◽  
Exchange Capacity ◽  
Ammonium Ion ◽  
Order Kinetic ◽  
Ammonium Ions ◽  
Ion Exchange Capacity ◽  
Ion Removal ◽  
Order Kinetic Model ◽  
Pseudo Second Order

This study investigated the use of weathered halloysite as an ion exchange material for ammonium removal from water. The study was conducted under static and dynamic conditions. The influence of such parameters as the preliminary concentration of ammonium ions, dose of halloysite, and pH was examined in periodic studies. The ion exchange capacity of weathered halloysite under various regeneration conditions such as concentration, excess of regeneration solution and the pH at which the regeneration was performed was also determined. The effect of flow velocity, initial NH4+-ions concentration was studied in column tests and the weathered halloysite’s ion -exchange capacity was also determined. The best results of ammonium ion removal were obtained at pH 6. The equilibrium isotherms were described using the Langmuir and Freundlich models. The results of periodic studies show a good fit for the data of both models, with Langmuir isotherms reflecting the removal of ammonium ions better. A good match for the data (R2 > 0.99) was provided by a pseudo second-order kinetic model. The obtained results indicate that a properly prepared halloysite can be a useful mineral for the removal of dangerous substances, such as ammonium ions, present in natural waters.

scholarly journals Preparation, Characterization and Analytical Application of Tin (IV) Tungstoselenate - 1, 10 Phenanthroline

2021 ◽  
Vol 37 (4) ◽  
pp. 997-1001
Author(s):  
Esmat Laiq ◽  
Syed Ashfaq Nabi
Keyword(s):  
Ion Exchange ◽  
Exchange Capacity ◽  
Ion Exchanger ◽  
Ion Exchange Capacity ◽  
Inorganic Ion Exchanger ◽  
Inorganic Ion ◽  
Final Sample ◽  
Kd Values ◽  
Exchange Material ◽  
Solvent Systems

Synthesis of a composite ion exchange material Tin (IV) tungstoselenate - 1, 10 phenanthroline has been achieved by mixing differentvolume ratios of the organic counterpart with the inorganic ion exchangertin (IV) tungstoselenate. Final sample, having 0.88mmoles of 1, 10 phenanthroline per gram of inorganic ion exchanger, was chosen for characterization, including ion exchange capacity, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The ion exchange capacity of Li+, Na+, Ca2+, Sr2+ metals was determined by using the synthesized material. The adsorption behavior of Al3+,Co2+,Ni2+,Cu2+,Cd2+,Pb2+ in various solvent systems have been studied. Based on distribution Coefficient (Kd) values, few analytically necessary separations of metal ions from the synthetic mixture have been achieved on the column of the composite ion exchanger.

Synthesis and Characterization of Zirconium-Resorcinol Phosphate; A New Hybrid Cation Exchanger and Dye Adsorbent for Water Treatment

2016 ◽  
Vol 842 ◽  
pp. 196-208 ◽  
Author(s):  
Syeed Zeeshaan Fathima ◽  
Altaf Hussain Pandith
Keyword(s):  
Ion Exchange ◽  
Volume Ratio ◽  
Exchange Capacity ◽  
Adsorption Behavior ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Ph Titration ◽  
Ion Exchange Capacity ◽  
Exchange Material

Synthesis and characterization of a new hybrid ion exchange material Zirconiumresorcinol Phosphate (ZrRP) is reported in this study. Synthetic conditions such as reactant concentrations and mixing volume ratio were varied to optimize the ion exchange properties of this material. The material has Na+ ion exchange capacity equal to 1.7 meq/g (dry). X-ray diffraction spectra suggest that it is amorphous in nature. This ion-exchanger was also characterization by SEM, IR and TGA-DTG. Various studies such as determination of ion exchange capacity, elution behaviour and pH titration has been performed for different metal ions such as K+, Ca2+, Sr2+, Mg2+, Ni2+, Cd2+. This material has potential application for removal of these ions from the aqueous systems. Effect of anionic (SDS) and nonionic (TX-100) surfactants has also been studied on the adsorption behavior of ZrRP. The material has been found to be selective for Mg2+and Cd2+. We also found that the material showed remarkable adsorption behavior towards some dyes like malachite green and methylene blue.

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