Low-world oil prices but supportive government policies provide growing environmental and energy security support favorable for the bioethanol market. The need to generate large and sustainable supply of biomass to make bioethanol will require the development of crops grown specifically for bioenergy production. Given the existing history of genetic improvement and infrastructure available for sorghum, (Sorghum bicolor L. Moench) hybrids will be one of the several species dedicated as energy crop and the subject of this study. Texas A & M University Sorghum Breeding Program has developed hybrid sorghum varieties with high protein digestibility and improved starch digestibility. Most of the previous research on grain sorghum focused on the digestibility of sorghum protein from the nutritional point of view.The aim of the current study was to select best sorghum lines from relatively large and diverse sorghum samples that breeders are currently working with for the development of new low energy input liquefaction, saccharification and fermentation methodologies to produce bioethanol. Limited researches studies report on the performance of sorghum varieties in ethanol fermentation in relation to the protein and starch digestibility of sorghum.

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Cotton gin trash (CGT) was used to produce activated carbon via pyrolysis and steam activation. To determine the effect of pyrolysis temperature and time on the properties of activated carbon, optimization of the pyrolysis conditions at temperatures of 600, 700, and 800 0 C for 30, 45 and 60 minutes were made. Steam activation of the product char was prepared at temperatures range of 250-600 o C and ambient pressure (14.7 psi) for 60 minutes while iodine number and ash analysis were conducted to evaluate the adsorption capacity of the produced activated carbon. Char production was found to decrease with increasing pyrolysis temperature and time. Whereas, the optimal increase in iodine number value from 200 to 427 was observed at 700 0 C and 45 minutes pyrolysis conditions. Using the concept of biomass iodine number, the adsorption property of the CGT activated carbon was found comparable with commercially available activated carbon from lignite, which had an iodine value of 600.

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