Journal
APPLIED ENERGY
Volume 140, Issue -, Pages 14-19Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2014.11.045
Keywords
Microalgae; Acid hydrolysis; Optimization; ABE; Butanol; Sugars
Categories
Funding
- Utah State University BioEnergy Program
- Utah Science Technology and Research (USTAR) initiative
- U.S. Department of Energy (DOE)
Ask authors/readers for more resources
Exploring and developing sustainable and efficient technologies for biofuel production are crucial for averting global consequences associated with fuel shortages and climate change. Optimization of sugar liberation from wastewater algae through acid hydrolysis was determined for subsequent fermentation to acetone, butanol, and ethanol (ABE) by Clostridium saccharoperbutylacetonicum N1-4. Acid concentration, retention time, and temperature were evaluated to determine optimal hydrolysis conditions by assessing the sugar and ABE yield as well as the associated costs. Sulfuric acid concentrations ranging from 0 to 1.5 M, retention times of 40-120 min, and temperatures from 23 degrees C to 90 degrees C were combined to form a full factorial experiment. Acid hydrolysis pretreatment of 10% dried wastewater microalgae using 1.0 M sulfuric acid for 120 min at 80-90 degrees C was found to be the optimal parameters, with a sugar yield of 166.1 g for kg of dry algae, concentrations of 5.23 g/L of total ABE, and 3.74 g/L of butanol at a rate of USD $12.54 per kg of butanol. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available