Fabric bleaching removes additives from natural fabrics, making them softer and easier to dye. Synthetic materials are treated with reductive bleach, while natural fabrics are bleached with oxidative bleach. Optical brighteners are added to enhance the white color and make the material easier to dye. Bleaching also makes the fabric more comfortable to wear. Fabric […]
Bleaching earth, a type of clay found in Asia, England, India, and the US, is processed for its absorbent, bleaching, and filtering properties. It is commonly used to remove color pigments from oils and other chemicals, filter impurities from petroleum products, and as an ingredient in beauty products and anti-diarrheal drugs. After use, spent bleaching […]
Bleaching pulp is a multi-step process to remove lignin and brighten paper products. Delignifying involves breaking down lignin into smaller molecules. Two approaches to whitening paste are cutting down lignin for up to 70% brightness or removing it almost completely for 90% brightness. Chemical bleaching paste can harm the environment, but newer processes like ECF […]
