Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Steam-pretreatment conditions at a constant severity of 3.6 obtained by manipulating temperatures and residence times
| Sample | Temperature (°C) | Time (min) | H2SO4 loading (%)a | Severity (R 0) |
|---|---|---|---|---|
| SP1 | 200 | 5.0 | 0.7 | 3.6 |
| SP2 | 190 | 9.9 | 0.7 | 3.6 |
| SP2# | 190 | 9.9 | 0.0 | 3.6 |
| SP3 | 180 | 19.4 | 0.7 | 3.6 |
| SP4 | 170 | 38.2 | 0.7 | 3.6 |
| SP5 | 160 | 75.3 | 0.7 | 3.6 |
a Based on the weight of dry poplar wood chips
# refers to the sample steam pretreated at 190 °C without the addition of H2SO4
