TY - GEN
T1 - Liquid fuels from food waste
T2 - 2nd International Symposium on Green and Sustainable Technology, ISGST 2017
AU - Sim, Yoke Leng
AU - Ch'Ng, Boon Juok
AU - Mok, Yau Cheng
AU - Goh, Sok Yee
AU - Hilaire, Dickens Saint
AU - Pinnock, Travis
AU - Adams, Shemlyn
AU - Cassis, Islande
AU - Ibrahim, Zainab
AU - Johnson, Camille
AU - Johnson, Chantel
AU - Khatim, Fatima
AU - McCormack, Andrece
AU - Okotiuero, Mary
AU - Owens, Charity
AU - Place, Meoak
AU - Remy, Cristine
AU - Strothers, Joel
AU - Waithe, Shannon
AU - Blaszczak-Boxe, Christopher
AU - Pratt, Lawrence M.
N1 - Publisher Copyright:
© 2017 Author(s).
PY - 2017/4/6
Y1 - 2017/4/6
N2 - Waste from uneaten, spoiled, or otherwise unusable food is an untapped source of material for biofuels. A process is described to recover the oil from mixed food waste, together with a solid residue. This process includes grinding the food waste to an aqueous slurry, skimming off the oil, a combined steam treatment of the remaining solids concurrent with extrusion through a porous cylinder to release the remaining oil, a second oil skimming step, and centrifuging the solids to obtain a moist solid cake for fermentation. The water, together with any resulting oil from the centrifuging step, is recycled back to the grinding step, and the cycle is repeated. The efficiency of oil extraction increases with the oil content of the waste, and greater than 90% of the oil was collected from waste containing at least 3% oil based on the wet mass. Fermentation was performed on the solid cake to obtain ethanol, and the dried solid fermentation residue was a nearly odorless material with potential uses of biochar, gasification, or compost production. This technology has the potential to enable large producers of food waste to comply with new laws which require this material to be diverted from landfills.
AB - Waste from uneaten, spoiled, or otherwise unusable food is an untapped source of material for biofuels. A process is described to recover the oil from mixed food waste, together with a solid residue. This process includes grinding the food waste to an aqueous slurry, skimming off the oil, a combined steam treatment of the remaining solids concurrent with extrusion through a porous cylinder to release the remaining oil, a second oil skimming step, and centrifuging the solids to obtain a moist solid cake for fermentation. The water, together with any resulting oil from the centrifuging step, is recycled back to the grinding step, and the cycle is repeated. The efficiency of oil extraction increases with the oil content of the waste, and greater than 90% of the oil was collected from waste containing at least 3% oil based on the wet mass. Fermentation was performed on the solid cake to obtain ethanol, and the dried solid fermentation residue was a nearly odorless material with potential uses of biochar, gasification, or compost production. This technology has the potential to enable large producers of food waste to comply with new laws which require this material to be diverted from landfills.
UR - http://www.scopus.com/inward/record.url?scp=85017589959&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85017589959&partnerID=8YFLogxK
U2 - 10.1063/1.4979374
DO - 10.1063/1.4979374
M3 - Conference contribution
AN - SCOPUS:85017589959
T3 - AIP Conference Proceedings
BT - Green and Sustainable Technology
A2 - Bashir, Mohammed J.K.
A2 - Sethupathi, Sumathi
A2 - Seng, Ong Kok
PB - American Institute of Physics Inc.
Y2 - 10 January 2017 through 13 January 2017
ER -