In approach sugar hydrolysates were prepared from water washed recovered fibre pretreated under optimised conditions (0.8% H2SO4 at 180 ํC for 12 min), followed by enzymatic hydrolysis (80 FPU/g DM, pH 5.0, 48 h) and recovered sugars were subject to fermentation.
Approach, sugar hydrolysates were produced by pretreating CGT under the same optimised conditions (0.8% H2SO4 at 180 ํC for 12 min) with subsequent cellulase hydrolysis (80 FPU/g DM, pH 5.0, 48 h) of pH adjusted whole pretreated slurries (described in Section 2.2 above) and recovered sugars were subject to fermentation.