Electronic Theses and Dissertation

Eceng gondok can be used as raw material of pulp production because it containi high cellulose. The production of pulp from eceng gondok can be though soda process started wash with ripening by using the NaOH, fellowed wash by of this research was to study the influence of NaOH concentration (NaOH) and ripening time to permanganate% yield, number, and rate of cellulose content. Variable used in this research are concentration of NaOH (3%, 5%, 7%, 9%, and 11%) and ripening time (120, 150, 180, 210, and 240 minute). Other conditions such as weight of eceng gondok fixed (8 gram), ripening temperature (125-135"C), and condensation volume (500 ml) were from result of this research obtained the condition of best that is : when repening 240 cooker material concentration and minute 7% NaOH concentration. The resalt showed that 31,81% yield, 10,65 permanganate number an cellulose rate 78% obtained with the above operating condition.

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