Use of fungal mixed culture for pretreatment of cotton gin waste to enhance the bioethanol production

KRISHNA, PRAMANIK and SHITARASHMI, SAHU (2015) Use of fungal mixed culture for pretreatment of cotton gin waste to enhance the bioethanol production. In: Fourth International Conference On Advances in Applied Science and Environmental Engineering - ASEE 2015, 26-27 September, 2015, Kuala Lumpur, Malaysia.

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Due to stringent environment regulations, the disposal of cotton gin waste is one of the massive problems faced by cotton industries throughout the world. Cotton gin waste is a lignocellulosic biomass and this might be utilized to produce bioethanol which is a promising alternative energy sources for transportation fuel. The prime effort of the present investigation was to decompose or degrade the complex mixtures of cellulose, hemicellulose and lignin compounds of cotton gin waste. This pretreatment has enhanced the production of reducing sugar and bio-ethanol using mixed culture of efficient white rot fungi (Trametes pubscens and Pycnoporus cinnabarinus).It was examined that, in delignification process, solid state cultivation (SSC) having 57.5 % of lignin removal was found to be more effective than submerged cultivation (SMC) with 45.6 % of lignin removal.The corresponding cellulose and hemicellulose reduction were determined as 64 and 68.5% in SSC, whereas their values in SMC were 46.2% and 52% respectively.The conformations of delignification process with respect to fungal pretreated and untreated cotton gin waste have also been assessed using FTIR, XRD and SEM analysis. The optimization of process parameters for mixed culture further showed substantial improvement in delignification of 63.2% in SSC. In this study, optimization of parameters through response surface model highlights the importance of the mixed cultures for delignification of cotton gin waste.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cotton gin waste, mixed culture, white rots fungi, lignin, cellulose, hemicelluloses
Depositing User: Mr. John Steve
Date Deposited: 26 Apr 2019 04:44
Last Modified: 26 Apr 2019 04:44

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