Recycling of Cellulosic Fibers by Enzymatic Process |
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Authors: | Email author" target="_blank">K?M?ShojaeiEmail author F?Dadashian M?Montazer |
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Institution: | (1) Department of Textile Engineering, AmirKabir University of Technology, Tehran, Iran |
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Abstract: | In this research, enzymatic treatment as an environmental friendly process has been used for recycling process of old cellulosic
wastes such as cotton, viscose, and lyocell. Cellulase hydrolyses cellulosic chains and shortens cellulosic fibers. This study
investigates to detect the optimum enzyme concentration and time of treatments for suitable changes of length and weight loss.
The main purposes of this article are shortening of cellulosic fibers and evaluating of enzymatic treatment in different kind
of cellulosic fibers. According to the data of experiments, with the increase of enzyme concentration and the treatment time,
the length and weight loss percentage of the cellulosic fibers has been decreased. The length and weight loss percentage of
treated viscose is more than that of lyocell and cotton fibers. Optimized condition, reaction time, and enzyme concentration
have been determined by mean length of treated cellulosic samples. Suitable longitudinal distribution of fiber for papermaking
industries is in the range of 0 to 4 mm. Optimum enzyme concentration and treatment time for recycling cotton, lyocell, and
viscose fibers are 2% and 48 h for cotton and lyocell and 0.5% and 48 h for viscose, respectively. According to the data of
experiment, the length of treated fibers is appropriate for its usage as a raw material in papermaking industries. |
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