151. Improvement of paper wastes conversion to bioethanol using novel cellulose degrading fungal isolate.
- Author
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Darwesh, Osama M., El-Maraghy, Salma H., Abdel-Rahman, Hany M., and Zaghloul, Rashed A.
- Subjects
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WASTE paper , *ENVIRONMENTAL protection , *ETHANOL as fuel , *ASPERGILLUS niger , *RICE straw , *CELLULOSE , *BAGASSE , *LIGNOCELLULOSE - Abstract
The current study was designed to isolate and identify superior cellulose-degrading fungi from Egyptian soils reached with cellulosic compounds, then production of bioethanol from paper wastes using this isolate. Among 9 fungal isolates, one isolate was selected as the highest cellulases producer. This isolate was identified by morphological and genetic characteristics as Aspergillus niger MK543209. Basal mineral salt medium amended with 1% rice straw was the best medium for cellulose-degrading enzymes production under submerged fermentation (SmF). Additionally, bagasse at 30% and urea at 2% were the best carbon and nitrogen sources, respectively. In respect to the environmental conditions, the optimum temperature, pH and incubation period were 45 °C, 5.5 and 4 days, respectively. The optimized conditions were applied to produce reducing sugars from paper wastes, followed by production of bioethanol as a renewable energy. A 0.9 g/l/h of ethanol were produced as the best value. This study may be considered the initial point for production of renewable energy and protection of environment from wastes. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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