| Titre : |
The ecotoxicity of leathers under different tanning methods |
| Type de document : |
texte imprimé |
| Auteurs : |
Zhong Anhua, Auteur ; Fang Songchun, Auteur ; Wang Ji, Auteur ; Huang Zhuo, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 65-72 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chrome
Chrome hexavalent -- Toxicologie
Cuirs et peaux -- Analyse
Ecotoxicologie
Hydrocarbures
Métaux lourds
Métaux lourds -- Toxicologie
Sols -- Pollution
Tannage -- Aspect de l'environnement
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
End-of-life is important when determining a material's sustainability credentials. Raw hides/skins are naturally biodegradable and, therefore, leather can play a key rote in a sustainable circular future. The addition of chemicals during tanning alters the disintegration rate and, different tanning methods likely produce leather with various toxicities.
Leather samples tanned using different methods were analysed for detectable values of common toxins. Ecotoxicological screening was carried out on 5-samples of each type of leather (chrome-tanned, chrome-free and vegetable-tanned). Chrome-tanned leather had significantly more detectable levels of chromium than other leathers. Vegetable-tanned leathers had significantly more detectable levels of extractable petroleum hydrocarbons compared to other samples.
At end-of-life, toxins from biodegradable leathers may contaminate soil. Oxidants within soit oxide Cr(III) to more toxic Cr(VI). Chromium is taken up by plants, impacting growth and development, due to its structural similarity to other essential nutrients. Petroleum hydrocarbons negatively impact soit enzyme activities which alters nutrient availability. These hydrophobic compounds stunt plant growth and development and exert a carcinogenic effect. Toxins within soils may affect organisms directly through ingestion or indirectly through bioaccumulation which poses a risk to human health.
Although the tanning method influences the ecotoxicological screen, the leather-making process is diverse (depending on desired leathers properties and application) and therefore, tanning type is not an accurate determinant of leather toxicity. Furthermore, the ecotoxicological screen is not comprehensive and, therefore, compounds with high toxicity may not be currently detected. Ecotoxicological screening methods should be improved to cover all compounds of concern. |
| Note de contenu : |
- Sources of heavy metals
- Toxicity of chromium
- Sources of toxins at low detectable levels
- Sources of extractable petroleum hydrocarbons
- Toxicity of petroleum hydrocarbons
- Influence of soil characteristics on leather toxicity
- Alternative factors influencing leather toxicity
- Table 1 : Outcomes of the Kruskal-Wallis test, along with medians and ranges for each toxin
- Table 2 : High hazard threshold vs detected levels of contaminants in soil |
| En ligne : |
https://drive.google.com/file/d/1W913HlTHZbbPNsl2VgsO_X9frP6gz9Xh/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37485 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 2 (03-04/2022) . - p. 65-72
Aller sur edunet
Accueil
The ecotoxicity of leathers under different tanning methods in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 2 (03-04/2022)
