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ABSTRACT
Electrodialysis (ED) has been recently known as a highly effective technique to remove and recover ionic liquids from aqueous solution. When a conventional electrolyte solution for the ED process containing Na2SO4 was used, a recovery ratio of an acidic IL, 1-butyl-3-methylimidazolium hydrogen sulfate ([Bmim][HSO4]), was 90%. On the other hand, the value clearly increased to 96% when we employed [Bmim][HSO4] as the electrolyte solution. In an acid hydrolysis of bagasse using the IL under microwave irradiation, the recovery ratio maintains 96%, irrespective of reaction time. This demonstrates the applicability of the proposed ED system in biomass processing.
Supplemental data
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Funding
This study was supported in part by the Advanced Low Carbon Technology Research and Development Program (ALCA) (Grant number 2100040), the Cross-ministerial Strategic Innovation Promotion Program (SIP), and the Center of Innovation Program “Construction of next-generation infrastructure using innovative materials: Realization of safe and secure society that can coexist with the Earth for centuries” from Japan Science and Technology Agency, and also by JSPS KAKENHI Grant Number 15H04193.
