| Titre : |
Removal by an adsorbent resin of non-ionic surfactants used in tannery processes |
| Type de document : |
texte imprimé |
| Auteurs : |
A. Rozzi, Auteur ; M. Antonelli, Auteur ; C. Angeretti, Auteur ; R. Mantovani, Auteur ; E. Scaglia, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 266-270 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbants et adsorbants
Déchets industriels -- Elimination
Eaux usées -- Décontamination
Eaux usées -- Teneur en surfactants
Surfactants
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
A new process to remove non-ionic surfactants from tannery wastewater, using a bed of adsorbent synthetic resin, has been investigated at laboratory and pilot scale.
A small pilot column (V=2 litres) has been tested at a tannery in Northern Italy. The wastewater was filtered on a sand-bed and then fed to the adsorbent resin. The column operated at very short nominal residence time, lower than 7 minutes.
Non-ionic surfactants were monitored in the column influent and effluent. Two regeneration procedures were tested : hot water with soda nd solvent extraction by acetone. Only the latter was quite successful and allowed a complete recovery of the absorbate. More basic experiments were carried out at laboratory scale using synthetic solutions made of tap water and a non-ionic surfactant industrial product to evaluate equilibrium isotherms and adsorption kinetics. A first approximation economical evaluation of the process was also carried out.
The experimental results indicate that the removal of non-ionic surfactants from industrial wastewater (tannery effluent) by adsorbent resin is feasible and economically competitive. |
| Note de contenu : |
- MATERIALS AND METHODS : Wastewater - Synthetic solution - Adsorbent resin - Adsorption column - Kinetic tests and equilibrium iso therms
- RESULTS AND DISCUSSION : Adsorption tests on pilot column
- Batch regeneration with soda
- Batch regeneration with acetone
- Kinetic tests and equilibrium isotherms
- Cost evaluation
- Table 1 : Main characteristics of the tannery WWTP effluent
- Table 2 : Main characteristics of the RMO2O resin
- Table 3 : Main operating parameters of adsorbent column during the two cycles
- Table 4 : Characteristics of the eluate and wash water for NaOH regneration
- Table 5 : Main results of acetone regeneration procedure on two samples of resin
- Table 6 : Values of kinetic constants K for the two resin granulometry fractions and for 30mg/l Sandozine initial concentration and correlation coefficient R2 |
| En ligne : |
https://drive.google.com/file/d/1zo480kXIyIH5FbluBImWv715v-jI2_mw/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40817 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 84, N° 6 (11-12/2000) . - p. 266-270
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Removal by an adsorbent resin of non-ionic surfactants used in tannery processes in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 6 (11-12/2000)
