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- W2074862425 abstract "A suspension of sawdust from mixed residual softwoods species was treated in twin tubular reactors (SS316 or zirconium—Zr) in the temperature range 200–230°C, at residence times 120–160 s and at acid (H2SO4) concentrations up to 0.28 (% wt acid/wt of suspension). No significant difference between reactor materials other than the presence of a higher concentration of oligomeric materials with Zr has been found during hydrolysis although the SS316 reactor led to a much higher concentration of iron ions in solution. We have also shown experimentally that acid impregnation (24 h soaking period at room temperature and atmospheric pressure) prior to prehydrolysis did not prove superior to direct acid injection during the treatment. A homogenizing pretreatment aimed at increasing accessibility of protons to the hydrolyzable bonds did not lead to increased hydrolysis over direct processing of the suspension. Overall conversion data as well as yields of soluble saccharides are presented as a function of operating conditions. It is shown that the prehydrolysis treatment, if properly conducted, results in the fractional solubilization of the hemicelluloses." @default.
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- W2074862425 date "1991-01-01" @default.
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- W2074862425 title "Effects of reactor material, acid impregnation and homogenization of the suspension during aqueous-steam prehydrolysis of mixed softwoods sawdust using tubular reactors" @default.
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- W2074862425 doi "https://doi.org/10.1016/0961-9534(91)90040-j" @default.
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