Uniform particles formed by hydrolysis of acid mine drainage with urea

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F11%3A00369860" target="_blank" >RIV/61388980:_____/11:00369860 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.hydromet.2010.11.012" target="_blank" >http://dx.doi.org/10.1016/j.hydromet.2010.11.012</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.hydromet.2010.11.012" target="_blank" >10.1016/j.hydromet.2010.11.012</a>

Result language
angličtina
Original language name
Uniform particles formed by hydrolysis of acid mine drainage with urea
Original language description
The study describes a new way of treating of acid mine drainage (AMD) waters containing sulphate of Fe(+3) and Al(+3) as dominant components using homogenous thermal hydrolysis with urea. The model solution and the acid mine drainage solution were kept with urea at one of the selected temperatures (60 degrees C, 80 degrees C and 95 degrees C) in thermostatic bath. X-ray powder diffraction spectra identified four main phases in the hydrolysis products, namely: goethite, schwertmannite. ferrihydrite and jarosite. No crystalline phases of aluminum were detected. Depending on the precipitation conditions, the prepared samples consist of spherical aggregates of nanocrystals of various modifications of hydrated iron oxides. The specific surface area resultsshow that with increasing content of Al(3+), the specific surface area in the final product decreases. The results reveal that by homogenous hydrolysis of acid mine drainage with urea, it is possible to prepare easily filterable relativel
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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