Journal of Environmental Analytical Chemistry

Aisha Nazir

Publications

• Research Article
  Comparison of Various Additives in Cotton Bleaching Efficiency
  Author(s): Aisha Nazir, Fariha Arooj and Saifur Rehman KashifAisha Nazir, Fariha Arooj and Saifur Rehman Kashif
  
  Bleaching efficiency is evaluated by the degree of whiteness, absorbency, copper number, tendering factor, strength or strength loss, dye uptake, alkali solubility, degree of polymerization and chemical transformation. Recent lab-scale studies have proven ozone to bleach with efficiency comparable to the conventional bleaching agents and hydrogen peroxide at faster rates without requiring heating or any other supportive treatment with less energy and water. Ozone alone, however, showed poor efficiency in pilot-scale determinations, suggesting the use of certain additives to support it in performing its bleaching action. This research was conducted to compare the influence of methanol, isopropanol, oxalic acid and sodium borohydride on improvement in the bleaching performance of ozone in terms of whiteness, absorbency and burst strength. The additives brought an overall improvement in .. Read More»
  DOI: 10.4172/2380-2391.1000218

  Abstract PDF