Preparation and characterisation of tannery solid waste as an alternative biosorbent for leather dyes / Bianca Mella in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 3 (05-06/2017) . - p. 143-148 Titre : Preparation and characterisation of tannery solid waste as an alternative biosorbent for leather dyes Type de document : texte imprimé Auteurs : Bianca Mella, Auteur ; Mariliz Gutterres, Auteur Année de publication : 2017 Article en page(s) : p. 143-148 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biosorbant Chimie analytique Colorants -- Adsorption Colorants acides Cuirs et peaux -- Déchets -- Recyclage Cuirs et peaux -- Teinture Eaux usées -- Epuration Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this work, surface of a novel sorbent (cattle hair waste — CHW) was characterized and its dye removal ability was tested in an aqueous medium of Acid Blue 161 dye. The isoelectric point, functional groups and morphology were investigated. Sorbent surface and chemical composition were characterised using scanning electron microscopy (SEM) and anergy dispersive X-ray spectroscopy (EDS). The functional group an CHW was investigated using Fourier transform infra-red spectroscopy (FTIR). The specific surface area and pore size distribution were determined by analyzes of BET/BJI-I which showed values considered low when compared to commercial activated cardon, through using SEM, EDS and FTIR we observed the presence of the dye in the adsorbent tested. The level of dye removal. was 70.82% (pH3.0) with maximum amounts of AB-161 dye adsorbed of 7.08mg.g-1. The obtained results offer a promising use for CHW as an efficient eco-friendly sorbent for the treatment of Ieather wastewater containing dyes. Note de contenu : - MATERIALS AND METHODS : Adsorbent preparation - Adsorbent characterisation - Solutions and reagents - Batch adsorption experiments - RESULT AND DISCUSSION : Point of zero charge (pHpzc) - Micrographs - Analyses with energy dispersive X-ray spectroscopy (EDS) - Specific surface area and pore size distribution (BET/BJH) - Fourier transform infrared spectroscopy (FTIR) - 3.7. Thermal analyses - 3.8. Thermogravimetric analysis (TGA) En ligne : https://drive.google.com/file/d/1Ej_oh2xf6N8CADIFO_FxpBbHchvbYgrG/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28799 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
19049	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Removal of chromium from tanning wastewater by chemical precipitation and electrocoagulation / Bianca Mella in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 2 (03-04/2016)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 2 (03-04/2016) . - p. 55-61 Titre : Removal of chromium from tanning wastewater by chemical precipitation and electrocoagulation Type de document : texte imprimé Auteurs : Bianca Mella, Auteur ; Ana Cláudia Cristófoli Glanert, Auteur ; Mariliz Gutterres, Auteur Année de publication : 2016 Article en page(s) : p. 55-61 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eaux usées -- Epuration Electrocoagulation Précipitation (chimie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Although chromium is used in the form of basic chromium sulfate for processing hides, it has well-known adverse effects when improperly disposed of in the environment under certain circumstances when Cr(III) can be oxidized to Cr(VI). Tanneries use large amounts of water for processing hides ; hence, chromium recovery from tanning wastewater is an environmentally friendly and economically viable alternative, as it can prevent a greater amount of chromium-containing sludge from being disposed of in industrial hazardous waste landfills. Compliance with environmental legislation also poses a challenge to the leather industry, as the parameters for discharging treated wastewater into receiving water bodies are increasingly stringent, which encourages the practice of techniques for recovery and reuse of chemical inputs in the tanning of hides. This study focuses on the removal of the chromium present in tanning wastewater through chemical precipitation and electrocoagulation. In both methods, chromium is separated in the form of an insoluble precipitate either by the addition of alkali or by the oxidation and réduction of metal anodes. Chemical precipitation resulted in 99.74% of removal efficiency, while in electrocoagulation with aluminum, copper and iron efectrodes, removal efficiency was 97.76%, 69.91% and 90.27%, respectively. Note de contenu : - Wastewater sample - Chemical precipitation - Electrocoagulation reactor - Analytical methods En ligne : https://drive.google.com/file/d/1oC6s2fUs82p2BGfS36WAMqlASuQ1TrD2/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26087 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17955	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)