AERATION EFFECT ON WATER HYACINTH PRETREATMENT USING BIOLOGY METHOD BY PHANEROCHAETE CHRYSOSPORIUM

THESIS SUMMARY

In Partial Fullfillment of The Requirements for The Master Degree

Graduate Program of Chemical Engineering

Master in Environmental Pollution Control Engineering

Water Hyacinth (Eichornia Crassipes) has a potential to be converted into a bioethanol. Biological pretreatment with Phanerochaete Chrysosporium require long of duration time than other pretreatment. The problem is less supply oxygen to help growth P.Chrysosporium. Effort to fulfill the oxygen can be helped with aeration. The purpose of research are studying P.Chrysosporium growth to rate variation of aeration in pretreatment of water hyacinth then to get a lignin degradation data, product of cellulose, hemicellulose, and glucose.

Water hyacinth has size 0,5 cm with weight 15 gram to add 1% MnSO₄, 2% molasses  and 70% water of content from total weight water hyacinth. This material in reactor on 500 mL which is flow air with to aid aeration. Aeration rate used are 0 L/m².min to 30,10 L/m².min. Period of sampling was performed on each variation of speed for every 4 to 24 days. Sample in thorough contents were fungi, lignin, cellulose, hemicellulose, and glucose.

Aeration rate of 2,15 L/m².min on 24^th days had resulted lignin degradation 0,3076 gram. While aeration rate of 15,05 L/m².min; 17,20 L/m².min; and 30,10 L/m².min indicate lignin degradation more high as 0,3374 gram; 0,4151 gram; and 0,3944 gram. Aeration of 2,15 L/m².min was optimum rate. It was refer to resulted of low lignin 0,3076 gram than other aeration rate. In addition it had the best of glucose on 16^th days as 1,341 g/L.

Key words: aeration, pretreatment, water hyacinth, P.Chrysosporium, lignocellulose