effect of hydrogen peroxide content on the preparation of peroxotitanate materials for the treatment of radioactive wastewater
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2016
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Abstract
The modification of peroxotitanate using hydrogen peroxide significantly improved the ion-exchange capacity of titanate materials as sorbents for metal ions contained in a radioactive waste simulant solution. The effects of hydrogen peroxide content (hydrogen peroxide/titanium isopropoxide molar ratios, hereafter expressed as H/T) on the properties of as-prepared titanate synthesized at 130°C and at pH of 6-7, followed by freeze-drying, were investigated. The peroxotitanate materials thus obtained were characterized by XRD, BET, SEM, TEM, EDX, ICP, and Raman spectroscopy. At an H/T ratio of 2, peroxotitanate predominantly exhibited an amorphous structure, with a clearly observed tubular or fibrous structure. Furthermore, peroxotitanate modified at an H/T ratio of 2 exhibited the best ion-exchange capacity of 191 mg g−1 for metal ions contained in a radioactive waste simulant solution. Hence, these peroxotitanate materials are suitable for removing metal ions from wastewater, especially lanthanide ions (Ln3+) and Sr2+.
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yang2016journaleffect
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| Authors | ;Wein-Duo Yang;Chau Thanh Nam;Jen-Chien Chung;Hsin-Ya Huang |
| Journal | reproductive biology and endocrinology |
| Year | 2016 |
| DOI |
10.1155/2016/9540529
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| URL | |
| Keywords |
Hypoxia
Diabetic retinopathy
Technology (General)
inflammation
radiotherapy
hemodynamics
placenta
preeclampsia
microstructure
gene profiling
microarray
lidocaine
newborn infants
mechanics of materials
panax ginsengbotany
surface mechanical attrition treatment
apoptosismedicine
nanocrystalline surface layer
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