ENHANCING TOTAL REDUCING SUGARS OF FIBRE SLUDGE USING IONIC LIQUIDS AND CO-SOLVENTS
Wang, Yufan (2017)
Wang, Yufan
Centria-ammattikorkeakoulu
2017
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2017053011038
https://urn.fi/URN:NBN:fi:amk-2017053011038
Tiivistelmä
The aim of this thesis work is to study the effect of ionic liquid [AzepSO3H] HSO4 on dissolution and hydrolysis of lignocellulosic waste-based fibre sludge. An efficient method to enhancing the total re-ducing sugar (TRS) yield was achieved by addition of co-solvents. The yield of TRS was measured by DNS method. The Fourier transformation infrared spectroscopy (FTIR) was used to investigate changes of fibre sludge sample after reaction.
As a result, the highest TRS yield 14 wt % was obtained by THF as co-solvent at 100 oC for 30 min. The good performance of conversion rate provided when the proportion of co-solvent to ILs is 50:50 wt %. The water amount plays an important role in TRS yield of fibre sludge conversion, and an ap-propriate amount of water should be considered to hydrolysis in ionic liquid. The total reducing sugar and conversion rate can significantly increase between fibre sludge and solvent system by using the mixture of ILs and co-solvents.
As a result, the highest TRS yield 14 wt % was obtained by THF as co-solvent at 100 oC for 30 min. The good performance of conversion rate provided when the proportion of co-solvent to ILs is 50:50 wt %. The water amount plays an important role in TRS yield of fibre sludge conversion, and an ap-propriate amount of water should be considered to hydrolysis in ionic liquid. The total reducing sugar and conversion rate can significantly increase between fibre sludge and solvent system by using the mixture of ILs and co-solvents.