КОМБИНИРОВАННАЯ ОЧИСТКА МНОГОКОМПОНЕНТНЫХ СТОЧНЫХ ВОД: НИЗКОТЕМПЕРАТУРНАЯ КАТАЛИТИЧЕСКАЯ ФЕРРИТИЗАЦИЯ
Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CEP USM
Abstract
Sunt prezentate metode de tratare a apelor uzate cu conţinut de metale grele prin metoda de feritizare, precum şi avamtajele acestei tehnologii faţa de alte metode fizico-chimice. Este arâtat rolul potenţialului ζal microparticulelor Fe3O4 în formarea structurilor de tip spinel. Valorile lui se schimbă de la 6-8 mV până la valori electronegative cu indice izoelectric la pH=6,5, odată cu schimbarea pH-ului din zona acidă in cea alcalină. Această valoare a indicelui izoelectric este corelatăcu începutul precesului de dezvoltare. Mecanismul reacţiilor de feritizare este legat cu natura catalitică a pro-ceselor şi cu probabilitatea formării radicalilor activi.
Methods related to the ferritization treatment of waste water containing the heavy metal ions are presented, and their advantages with regard to the other physical-chemical technologies. A role of ζ-potential of micro particles Fe3O4 in the formation of spinel structures is discussed. Its values are shifted from 6-8 mV to electronegative zone, along with the pH shift from the acid to alkaline zone. The isoelectric point is reached at рН=6,5, which corresponds to the beginning of ferritization process. The mechanism of ferritization reactions is connected with the catalytic nature of the processes and probability of the intermediate active radicals formation.
Methods related to the ferritization treatment of waste water containing the heavy metal ions are presented, and their advantages with regard to the other physical-chemical technologies. A role of ζ-potential of micro particles Fe3O4 in the formation of spinel structures is discussed. Its values are shifted from 6-8 mV to electronegative zone, along with the pH shift from the acid to alkaline zone. The isoelectric point is reached at рН=6,5, which corresponds to the beginning of ferritization process. The mechanism of ferritization reactions is connected with the catalytic nature of the processes and probability of the intermediate active radicals formation.
Description
Keywords
ape uzate, metoda de feritizare, каталитическая ферритизация, ferritization treatment, waste water, очистка сточных вод
Citation
КОВАЛЕВА, Ольга (2012). Комбинированная очистка многокомпонентных сточных вод: низкотемпературная каталитическая ферритизаци. In: Studia Universitatis Moldaviae. Seria Științe reale și ale naturii: Biologie. Chimie. Revista științifică. 2012, nr. 6(56), pp.65-76. ISSN 1814-3237