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Determination of surfactants in leather wastewater by flow injection spectrophotometry / Yuan Dong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 1 (01-02/2007)
[article]
Titre : Determination of surfactants in leather wastewater by flow injection spectrophotometry Type de document : texte imprimé Auteurs : Yuan Dong, Auteur ; Zhang Xinshen, Auteur ; Fu Dayou, Auteur ; Tu Jie, Auteur ; Zou Yuquqn, Auteur ; Li Xiang, Auteur Année de publication : 2007 Article en page(s) : p. 19-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie)
Cuirs et peaux
Eaux usées -- Analyse
Eaux usées -- Teneur en surfactants
SpectrophotométrieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A simple flow injection spectrophotometric method based on the reaction of malachite green with sodium dodecylbenzenesulfonate (SDBS) was proposed to determine surfactants in leather wastewater. SDBS was determined in a Na2HPO4 -KH2PO4 buffer solution (pH7.0) at 622nm. Under the optimum conditions, the linear range for SDBS was 0.05-3.0mg l-1, and the relative standard deviation (n = 9) for 0.5mg/L SDBS was 0.81%. The proposed FI method has been applied to the determination of anionic surfactants in leather wastewater with satisfactory results. Note de contenu : - EXPERIMENTAL PROCEDURE : Reagents - Apparatus - Preparation of solutions - Flow injection procedure
- RESULTS AND DISCUSSION : Choice of pH - MG concentration - Effect of flow rate - Effect of reaction coil length - Samping volume - Effects of interference ions
- RESULTS
- Table 1 : Determination of surfactants in leather wastewater - as SDBSEn ligne : - EXPERIMENTAL PROCEDURE : Reagents - Apparatus - Preparation of solutions - Flo [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39042
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 1 (01-02/2007) . - p. 19-20[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Removal by an adsorbent resin of non-ionic surfactants used in tannery processes / A. Rozzi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 6 (11-12/2000)
[article]
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
SurfactantsIndex. 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 R2En ligne : https://drive.google.com/file/d/1zo480kXIyIH5FbluBImWv715v-jI2_mw/view?usp=drive [...] Format de la ressource électronique : 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[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire