STRATEGIES FOR LOWER CHROME DISCHARGE IN CLEANER CHROME TANNING

摘要

Hide or skin, a by-product of the meat indus- try, is composed of collagen fibers with tight net- work. Tanning is the process which converts the waste hide into useful artefacts, such as sofa and automotive cushion, shoes, bags and garment. Alt- hough several types of tanning methods have em- ployed for tanning of hide, chrome tanning which endow leather unparalleled properties are still con- sidered as the most popular in the leather industry worldwide. Generally, only 60-80 of the offering chrome is effectively utilized and chrome-contained leather shavings and effluent is discharge into the environment, which triggers to severe environmen- tal pollution. Hence, finding a sustainable solution to reduce chrome disposal is a prime challenge for global tanners and researchers. This review focuses the methodology of cleaner chrome tanning, that is, integrated chrome tanning process, high exhaustion agents or auxiliaries based on chemical materials are discussed in this review.