منابع مشابه
Effect of chrome tanning on the thermal behavior of collagen fibers: A calorimetric and kinetic analysis
To further understand the effect of chrome tanning on the thermal stability of leather, the thermal shrinkage behaviors of native and chrome-tanned collagen fibers were studied by differential scanning calorimetry (DSC) using isoconversional and multivariate non-linear regression (Multivar-NLR) methods. The activation energies of the shrinkage processes were evaluated by both the differential (...
متن کاملA Study on removal of chromium from tannery effluent treatment of chrome tanning waste water using tannery solid waste
This study illustrates the process of removal of chromium from chrome tanning waste-water by fly ash which was drive from chrome shaving dust. This experiment was carried out in a batch process with laboratory prepared adsorbent samples and chrome tanning water collected from local tanneries. The influence of various factors likes adsorbent doses, contact time, and initial concentration of chro...
متن کاملThe extraction of collagen protein from pigskin
As the collagen protein market increasingly grows, it becomes a priority to explore a economic, stable, and environmentally-friendly extraction method to realize the high-value transformation of pigskin. In this paper, the structure of collagen protein is introduced first. Then five methods, which extract collagen protein from pigskin or a kind of leather industry waste-chrome shavings, are rev...
متن کاملPotential Danger of Chromium Tanned Wastes
This contribution deals with the waste from the processes in which raw hide is transformed into leather, as well as with the waste generated during further leather processing and the final waste of leather industry, the worn-out shoes. All this waste, if deposited in the open-air dumps, represents a potential threat to human health, because it contains trivalent chromium (Cr III), which can oxi...
متن کاملPlating with Trivalent Chrome
Hexavalent chromium wastes need to be chemically reduced to trivalent chrome in the shop’s treatment plant. This necessitates the use of expensive chemicals such as sulfur dioxide, sodium metabisulfite or sodium borohydride. Also considerable hazardous sludge is generated during the neutralization step of the treatment process due to the high chromium concentration of the plating solutions. Haz...
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ژورنال
عنوان ژورنال: Nihon Chikusan Gakkaiho
سال: 1981
ISSN: 1346-907X,1880-8255
DOI: 10.2508/chikusan.52.308