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Advisor(s)
Abstract(s)
A circular economy is based on an economy that in principle, moves away from the accelerated model of consumption and disposal. Thus, the flow associated with the product, instead of being translated by a straight line, is now regarded as a circle or cycle.
The leather manufacturing applies several physical and chemical treatments in different stages to transform the skin into leather.
The pulp and paper industry generate several byproducts such as tannins and lignins. The sulfited lignins are a particular type of black liquor and could be used as dispersing, pre-tanning and retanning agents .
During the chestnut freezing process, as consequence of the quality control, a significant quantity of chestnut fruit is rejected and not accepted by the consumer. Due to its high starch content, the chestnut fruit reject is used to produce chestnut flour which can be used as a filler retanning agent for leather.
From the biodiesel process results a byproduct, which represents 10 % wt of the overall production, the crude glycerol. The hygroscopic effect of glycerol and its emulsifying and lubricant effect can be enhanced for the leather fatliquoring.
Description
8th International Conference on Environment Management, Engineering, Planning and Economincs (CEMEPE 2021) and SECOTOX Conference
Keywords
Circular economy Leather manufacturing