| 000 | 03747nlm1a2200577 4500 | ||
|---|---|---|---|
| 001 | 664059 | ||
| 005 | 20231030041917.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\35243 | ||
| 035 | _aRU\TPU\network\32664 | ||
| 090 | _a664059 | ||
| 100 | _a20210325a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aNL | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aEfficient Cu2+, Pb2+ and Ni2+ ion removal from wastewater using electrospun DTPA-modified chitosan/polyethylene oxide nanofibers _fN. S. Surgutskaia, A. Di Martino, J. Zednik [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 56 tit.] | ||
| 330 | _aDiethylenetriaminepentaacetic acid-modified chitosan/polyethylene oxide nanofibers (CS-DTPA/PEO NFs) were developed for enhanced heavy metal ion adsorption. These nanofibers were prepared by electrospinning, and their morphology and structure were investigated by scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR), respectively. The ability of CS-DTPA/PEO NFs to removing copper (Cu2+), lead (Pb2+) and nickel (Ni2+) ions from aqueous solutions was tested at room temperature. The effects of [DTPA]/[NH2] molar ratio, pH and initial concentration of metal ions on their absorption capacity were investigated to optimize process conditions, using pseudo-first and apparent-second-order, Boyd and intraparticle diffusion models to determine the rate-limiting step of metal ions adsorption. In turn, Freundlich, Langmuir, Temkin and Dubinin-Radushkevich isotherm models were used to describe the experimental data. The results demonstrate a decrease in the ability of CS-DTPA/PEO NFs to adsorb metal ions in the following order: Cu2+>Pb2+>Ni2+. The adsorption equilibrium is established after 90 min from the first contact with solutions containing the metal ions, and data are described using the Langmuir isotherm model. The maximal adsorption capacities of CS-DTPA/PEO NFs for Cu2+ , Pb2+ and Ni2+ions were 177, 142, 56 mg g−1, respectively. The stability and reproducibility of CS-DTPA/PEO NFs were determined after five adsorption-desorption tests. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tSeparation and Purification Technology | ||
| 463 |
_tVol. 247 _v[116914, 33 р.] _d2020 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _achitosan | |
| 610 | 1 | _aDTPA | |
| 610 | 1 | _aelectrospinning | |
| 610 | 1 | _ananofibers | |
| 610 | 1 | _aadsorption | |
| 610 | 1 | _aheavy metals ions | |
| 610 | 1 | _aхитозан | |
| 610 | 1 | _aэлектропрядение | |
| 610 | 1 | _aнановолокна | |
| 610 | 1 | _aадсорбция | |
| 610 | 1 | _aионы | |
| 610 | 1 | _aтяжелые металлы | |
| 701 | 1 |
_aSurgutskaia _bN. S. _gNatalia |
|
| 701 | 1 |
_aDi Martino _bA. _corganic chemist _cresearch of Tomsk Polytechnic University _f1984- _gAntonio _2stltpush _3(RuTPU)RU\TPU\pers\39440 |
|
| 701 | 1 |
_aZednik _bJ. _gJiri |
|
| 701 | 1 |
_aOzaltin _bK. _gKadir |
|
| 701 | 1 |
_aLovecka _bL. _gLenka |
|
| 701 | 1 |
_aBergerova _bE. D. _gEva Domincova |
|
| 701 | 1 |
_aKimmer _bD. _gDusan |
|
| 701 | 1 |
_aSvoboda _bJ. _gJan |
|
| 701 | 1 |
_aSedlarik _bV. _gVladimir |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа химических и биомедицинских технологий _c(2017- ) _h8120 _2stltpush _3(RuTPU)RU\TPU\col\23537 |
| 801 | 2 |
_aRU _b63413507 _c20210325 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1016/j.seppur.2020.116914 | |
| 942 | _cCF | ||