Abstract: 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

• Publication Date: 27-Sep-2015
• DOI: 10.15224/978-1-63248-068-2-06
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Abstract: The potential of adsorptive removal of bisphenol A was investigated for two commercial carbon nanotubes including: single-wall carbon nanotubes (SWCNTs) and multiwall carbon nanotubes (MWCNTs). The surface area, elemental analyses and pHzpc of the carbon nanotubes (CNTs) were determined and the adsorption isotherms were measured. Adsorption isotherms indicate that the adsorption of bisphenol A on carbon nanotubes belongs to type L of the Giles classification. This follows from the textural and chemical characteristics of these carbons and essentially hydrophobic nature of bisphenol A. The adsorption capacity and relative affinity of SWCNTs are higher than that of MWCNTs with SWCNTs having about 12.7 times the adsorption capacity of MWCNTs. This suggests that SWCNTs have higher potential for removing bisphenol A from contaminated water. The weak ion strength dependence and strongly pH dependence of the adsorption process indicate that chemicomplexation is strong while physical sorption

• Publication Date: 27-Sep-2015
• DOI: 10.15224/978-1-63248-068-2-07
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