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Table 1 Process conditions

From: Flowthrough pretreatment with very dilute acid provides insights into high lignin contribution to biomass recalcitrance

Identification number

Aqueous condition

Type

Severity factora

Temperature (°C)

Time (min)

1

Liquid hot water

Flowthrough

log10R0 = 3.4

140

192

2

Flowthrough

180

12

3

Batch

140

192

4

Batch

180

12

5

Extremely dilute acid (0.05%)

Flowthrough

logCS = 1.4

140

192

6

Flowthrough

180

12

7

Batch

140

192

8

Batch

180

12

  1. aR0 = t*exp((T−100)/14.75)), where t is the time in minutes and T is the temperature in °C. log10R0 is called the pretreatment severity factor. logCS = log10R0 − pH is called the combined severity factor