| 000 | 03032nlm1a2200385 4500 | ||
|---|---|---|---|
| 001 | 647444 | ||
| 005 | 20231030040801.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\12584 | ||
| 035 | _aRU\TPU\network\5929 | ||
| 090 | _a647444 | ||
| 100 | _a20160411a2016 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aUse of natural mordenite to remove chromium (III) and to neutralize pH of alkaline waste waters _fV. L. Cordova-Rodriguez [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: p. 432-433 (51 tit.)] | ||
| 330 | _aThe natural mordenite from Palmarito de Cauto deposit (PZ), Cuba, was studied in this work as an ion exchanger to remove Cr(3+) cations from alkaline aqueous solutions at different pH and chromium concentrations. The mordenite stability under cyclic treatment processes with alkaline solutions and its capacity to decrease the pH of the solutions was also analyzed. It was shown that PZ removes Cr(3+) ions from alkaline solutions, and it happens independently of the starting chromium concentration and the pH of the exchange solution used. This material has an important neutralizing effect on alkaline solutions, expressed in a significant pH decrease from the early stages of the treatments. For solutions with initial pH equal to 11, it decreases to a value of around seven. The stability of this material is not affected significantly after continuous cyclic treatment with NaOH solution, which shows that mordenite, in particular from Palmarito de Cauto deposit, has high stability in alkaline solutions. The results are important as they suggest that natural zeolites may be of interest in treatments of alkaline industrial waste effluents. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tJournal of environmental science and health, part A: Toxic/hazardous substances & environmental engineering | ||
| 463 |
_tVol. 51, iss. 5 _v[P. 425-433] _d2016 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aCordova-Rodriguez _bV. L. _gValduvina |
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| 701 | 1 |
_aRodriguez-Iznaga _bI. |
|
| 701 | 1 |
_aAcosta-Chavez _bR. M. _gRaquel Maria |
|
| 701 | 1 |
_aChavez _bR. F. _gRivas Fernando |
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| 701 | 1 |
_aPetranovsky _bV. P. _gVitaly Pavlovich |
|
| 701 | 1 |
_aPestryakov _bA. N. _cChemist _cProfessor of Tomsk Polytechnic University, Doctor of Chemical Science _f1963- _gAleksey Nikolaevich _2stltpush _3(RuTPU)RU\TPU\pers\30471 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра физической и аналитической химии (ФАХ) _h94 _2stltpush _3(RuTPU)RU\TPU\col\18656 |
| 801 | 2 |
_aRU _b63413507 _c20160411 _gRCR |
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| 856 | 4 | _uhttp://dx.doi.org/10.1080/10934529.2015.1120536 | |
| 942 | _cCF | ||