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| Content Provider | Springer Nature Link |
|---|---|
| Author | Liu, Qiongqiong Tan, Xin You, Luhua Liu, Shejiang Zhao, Lin |
| Copyright Year | 2011 |
| Abstract | As a raw material, kaolin was modified to prepare a high-performance ammonium ion-exchange material. According to cation-exchange capacity (CEC) measurement, the prepared ammonium ion-exchange material has an ammonium ion-exchange capacity greater than 75 mg /g and can be used to remove ammonia nitrogen in water treatment. A pharmaceutical extruder-rounder was used to study the effects of granulation process. Polyethylene glycol-6000 (PEG-6000) was used as the pore-forming agent and calcining temperature of 650 °C was used as the optimal condition. NMR data indicate that $^{27}$Al is mainly converted from hexa-coordinated Al to tetra-coordinated Al during the modification. Compared with $^{29}$Si in the original kaolin, $^{29}$Si in the modified kaolin does not have an obvious change. A comparison of the data with Langmuir and Freundlich isotherm models shows a good correlation. The Freundlich model describes the process more accurately, and the adsorption process of ammonia nitrogen in water with the ammonium ion-exchange material closely matches the pseudo-second-order reaction. |
| Starting Page | 118 |
| Ending Page | 124 |
| Page Count | 7 |
| File Format | |
| ISSN | 10064982 |
| Journal | Transactions of Tianjin University |
| Volume Number | 17 |
| Issue Number | 2 |
| e-ISSN | 19958196 |
| Language | English |
| Publisher | Tianjin University |
| Publisher Date | 2011-04-19 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | kaolin ammonia modification granulation surface area Mechanical Engineering Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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