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 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...
متن کاملChrome Electroplating Waste BAT
During the past several years, waste produced by the electroplating industry has attracted attention due to the level of pollutants found in the waste stream, the difficulty associated with treatment, and the cost of waste disposal. EPA has enacted regulations to control the discharge from plating facilities and estimates that 140 million lb of metal pollutants will be prevented from being disc...
متن کاملMeasuring nonsolar tanning behavior: indoor and sunless tanning.
OBJECTIVE To develop items to measure indoor tanning and sunless tanning that can be used to monitor trends in population surveys or to assess changes in behavior in intervention studies. DESIGN A group of experts on indoor tanning convened in December 2005, as part of a national workshop to review the state of the evidence, define measurement issues, and develop items for ever tanned indoors...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 1906
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja01971a016