| Titre : | Anionic surfactants removal by natural coagulant/flocculant products (2009) |
| Auteurs : | J. Beltrán-Heredia, Auteur ; J. Sánchez-Martín, Auteur ; C. Solera-Hernández, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 10, Mai 2009) |
| Article en page(s) : | pp. 5085–5092 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Coagulant agent Flocculant Sodium dodecyl benzene sulfonate Anionic surfactant |
| Résumé : | A new tannin-based coagulant and flocculant agent has been tested on the removal of sodium dodecyl benzene sulfonate (SDBS), a dangerous and pollutant anionic surfactant. It is called Tanfloc and consists of a chemically modified tannin extract from Acacia mearnsii de Wild. Tanfloc has been revealed as an efficient product in anionic surfactant removal. Around 70% of SDBS removal has been achieved with Tanfloc doses of 150 mg·L−1. pH has a negative influence on surfactant removal, while the higher the initial surfactant concentration is the higher q capacity is obtained. Theoretical data adjustment has been carried out according to three different models: Frumkin−Fowler−Guggenheim (FFG), Gu and Zhu (G−Z), and Freundlich (F). Adjustment parameters have been obtained with r2 levels above 0.90 in all cases. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie801913y |
