Comparison of yellow poplar pretreatment between NREL digester and sunds hydrolyzer |
| |
Authors: | Tucker M P Farmer J D Keller F A Schell D J Nguyan Q A |
| |
Institution: | (1) National Renewable Energy Laboratory, 80401 Golden, CO |
| |
Abstract: | Single-stage cocurrent dilute acid pretreatments were carried out on yellow poplar (Liriodendron tulipifera) sawdust using an as-installed and short residence time modified pilot-scale Sunds hydrolyzer and a 4-L bench-scale NREL
digester (steam explosion reactor). Pretreatment conditions for the Sunds hydrolyzer, installed in the NREL process development
unit (PDU), which operates at 1 t/d (bone-dry t) feed rate, spanned the temperature range of 160 – 210°C, 0.1 – 1.0% (w/w)
sulfuric acid, and 4-10-min residence times. The batch pretreatments of yellow poplar sawdust in the bench-scale digester
were carried out at 210 and 230°C, 0.26% (w/w) sulfuric acid, and 1-, 3-, and 4-min residence times. The dilute acid prehydrolysis
solubilized more than 90% of the hemicellulose, and increased the enzymatic digestibility of the cellulose that remained in
the solids. Compositional analysis of the pretreated solids and liquors and mass balance data show that the two pretreatment
devices had similar pretreatment performance. |
| |
Keywords: | Index Entries" target="_blank">Index Entries Biomass ethanol dilute-acid pretreatment bio-conversion |
本文献已被 SpringerLink 等数据库收录! |
|