Mode D'elimination de composes organiques polaires par une alumine activee γ‐Al2O3en milieu aqueux. Comparaison avec le charbon actif.
- 1 January 1986
- journal article
- research article
- Published by Taylor & Francis in Environmental Technology Letters
- Vol. 7 (1-12) , 239-254
- https://doi.org/10.1080/09593338609384409
Abstract
Batch experiments carried out on dilute solutions of organic acids (oxalic, maleic, benzoïc and salicylic acids, humic substances) showed that activated alumina γ‐Al2O3 removed these solutes from water. The removal of organic acids was optimum in an acid medium (4 < pH < 6) and was significantly affected by the presence of inorganic anions. Filtration experiments showed competitive fixation of organic acids on γ‐Al2O3. Activated alumina could be regenerated by sodium hydroxide solutions but an important loss of efficiency of the filters was observed for the salicylic acid removal during 5 exhaustion‐regeneration cycles. A comparative study showed clearly that granular activated carbon (F400) had higher adsorptive capacities and was a better support for bacterial growth than activated alumina y‐A12O3.This publication has 1 reference indexed in Scilit:
- The surface complexation of organic acids on hydrous γ-Al2O3Journal of Colloid and Interface Science, 1980