Reduction of Hexavalent Chromium Formation in Leather with Various Natural Products (Coridothymus capitatus, Olea europaea, Corylus avellana, and Juglans regia)
Küçük Resim Yok
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Foundation Environmental Protection & Research-Fepr
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this research, the extracts obtained from various natural products (hazelnut shells, thyme, olive shoots, and walnut leaves), which are indicated to have antioxidative characteristics, which are used during the retanning stage of leather manufacturing and their effects on chromium(VI) formation in leather was examined. Finished leathers were exposed to ageing conditions for 24h at 80 degrees C and for 24h and 72h at 80 degrees C under UV in order to enable chromium(VI) formation in the leathers. Chromium (VI) amounts in each leather sample were measured with a Shimadzu UV-1601 PC UV-Visible spectrophotometer at 540 nm according to the ISO/FDIS 17075 standard method, and how each extract affected chromium (VI) formation in leather was examined. According to the findings of the research; Coridothymus capitatus, Olea europaea, Corylus avellana, and Juglans regia extracts, which were used during the retanning stage of leather manufacturing, significantly reduced chromium(VI) formation in the leather under all three ageing conditions. The best reduction was obtained with Coridothymus capitatus extract in the ratio of 89.24% under the ageing condition of 24h/80 degrees C. It is recommended that different extraction methods, different natural extracts, and different ageing conditions be carried out in the future are to optimize the results of the current study.
Açıklama
Anahtar Kelimeler
Ageing, antioxidants, chromium(VI), leather, plant extract
Kaynak
Ekoloji
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
21
Sayı
84
