Corn stover is a cheaper lignocellulose that is used to produce biofuels. There are numerous methods for pretreatment of corn stover before hydrolysis. Among those, which one is the most efficient?
Slightly depending on its moisture content, microwave (or combined microwave) irradiation can be taken into consideration. Because the average lignin content of the corn stover is around 20%, the process can be enhanced further via the addition/combination of acids (most preferably diluted H2SO4), because it can weaken the lignin-cellulose bonds, and the effects of the chemical and MW treatment would be additive. (In case of enzmyatic hydrolysis, the acid should be neutralized before it, and/or the pH of the whole system should be set at the optimum of the applied enzyme of course).
If the moisture content of the sample is too low, microwave irradiation might be not as effective, therefore a preceding wetting may be necessary before the MW treatment (or instead, using a conventional thermal process, combined with acids or standalone).
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https://www.semanticscholar.org/paper/Comparative-Study-on-Four-Chemical-Pretreatment-for-Yu-Zhang/3b8638694f8d4acb4632acf8487b7fc08df49e02
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