TY - JOUR
T1 - Techno-economic assessment of subcritical water hydrolysis of brewer’s spent grains to recover xylo-oligosaccharides
AU - Sganzerla, William Gustavo
AU - da Silva, Marcos Fellipe
AU - Zabot, Giovani L.
AU - Goldbeck, Rosana
AU - Mussatto, Solange I.
AU - Forster-Carneiro, Tânia
PY - 2023
Y1 - 2023
N2 - This study evaluated the techno-economic assessment of xylo-oligosaccharides (XOs) production from brewer’s spent grains (BSG) in a single and two sequential flow-through subcritical water hydrolysis (SWH) reactors at different temperatures (80–180 °C). The process with a single reactor produced the highest yield (72.83 mg XOs g−1 BSG) at 180 °C. The SWH in two sequential reactors produced up to 52.47 mg XOs g−1 BSG for the process operated at 80 °C followed by 130 °C. The lowest cost of manufacturing (18.36 USD kg−1 XOs) was obtained for the process with two sequential reactors. Although the fixed capital investment was 0.82-fold lower for the process with a single reactor, the gross profit of the process with two sequential reactors was 30% higher, which resulted in a return on investment of 54.26% and a payback of 1.84 years. In conclusion, SWH is a potential eco-friendly process to produce XOs from BSG.
AB - This study evaluated the techno-economic assessment of xylo-oligosaccharides (XOs) production from brewer’s spent grains (BSG) in a single and two sequential flow-through subcritical water hydrolysis (SWH) reactors at different temperatures (80–180 °C). The process with a single reactor produced the highest yield (72.83 mg XOs g−1 BSG) at 180 °C. The SWH in two sequential reactors produced up to 52.47 mg XOs g−1 BSG for the process operated at 80 °C followed by 130 °C. The lowest cost of manufacturing (18.36 USD kg−1 XOs) was obtained for the process with two sequential reactors. Although the fixed capital investment was 0.82-fold lower for the process with a single reactor, the gross profit of the process with two sequential reactors was 30% higher, which resulted in a return on investment of 54.26% and a payback of 1.84 years. In conclusion, SWH is a potential eco-friendly process to produce XOs from BSG.
KW - Lignocellulosic biomass
KW - Brewery by-products
KW - Value-added products
KW - Biobased products
KW - Pretreatment
U2 - 10.1016/j.supflu.2023.105895
DO - 10.1016/j.supflu.2023.105895
M3 - Journal article
SN - 0896-8446
VL - 196
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
M1 - 105895
ER -