| 000 | 02066cam a2200325 a 4500 | ||
|---|---|---|---|
| 003 | EG-GiCUC | ||
| 008 | 190131s2017 ua db f m 000 0 eng d | ||
| 040 |
_aEG-GiCUC _beng _cEG-GiCUC |
||
| 041 | 0 | _aeng | |
| 049 | _aDeposite | ||
| 097 | _aPh.D | ||
| 099 | _aCai01.12.11.Ph.D.2017.Mo.P | ||
| 100 | 0 | _aMohamed Abdeltawab Sayed | |
| 245 | 1 | 0 |
_aPreparation and characterization of polymer based nanomaterials for beryllium extraction from Um Adebaa area / _cMohamed Abdeltawab Sayed ; Supervised Maher Zaki Elsabee , Said Sayed Elkholy , Mohamed Shaaban Atrees |
| 246 | 1 | 5 | _aتحضير وتوصيف مواد بوليمرية نانومترية لاستخلاص البريليوم من منطقة أم الضباع |
| 260 |
_aCairo : _bMohamed Abdeltawab Sayed , _c2017 |
||
| 300 |
_a127 P. : _bcharts , maps ; _c25cm |
||
| 502 | _aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physical Chemistry | ||
| 520 | _aBe (II) was extracted from its ore as a beryl mineral and then leached as a sulfate liquor. Ordered meso-porous silica nanoparticles (MCM-41) and electrospun microporous silica nanofibers (SNF) were prepared as a matrix for beryllium uptake. Chitosan nanoparticles (Ch NPs) and nanocomposites with MCM-41 have been synthesized and their physical and surface properties were studied. Beryllium uptake efficiency using these novel materials was studied under different pH values, contact times, initial Be (II) concentrations and adsorbent doses. The maximum achieved uptake efficiencies were 45.8 and 92.7 for MCM-41 and SNF respectively and 95% and 96% for the nanocomposites which were superior to MCM-41 and higher than that of Ch NPs (90%) | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aBiopolymer Nanoparticles | |
| 653 | 4 | _aComposites | |
| 653 | 4 | _aNanostructured Polymers | |
| 700 | 0 |
_aMaher Zaki Elsabee , _eSupervisor |
|
| 700 | 0 |
_aMohamed Shaaban Atrees , _eSupervisor |
|
| 700 | 0 |
_aSaid Sayed Elkholy , _eSupervisor |
|
| 905 |
_aAsmaa _eCataloger |
||
| 905 |
_aNazla _eRevisor |
||
| 942 |
_2ddc _cTH |
||
| 999 |
_c69878 _d69878 |
||