Abstract
Exploring the clean and low cost biohydrogen production technology with vastly spread forestry based biomass highlights the practical large scale biohydrogen production prospective. In the present work we exploited the role of ultrafine pretreatment to Paulownia biomass as a sole carbon source to evaluate biohydrogen production potential. The altered physical, thermal and optical characteristics of Paulownia biomass after pretreatment of ultrafine grinding were compared with well-studied biomass of corn stover. Microstructural, FTIR and TGA analysis highlight the deterioration of crystal structure and lignin breaking of cellulose with increase in pretreatment time, which significantly improves hydrolysis and enhances hydrogen production subsequently. In comparison to raw materials, Paulownia leaves have the highest hydrogen production potential whereas after pretreatment, total hydrogen yield from Paulownia stems is increased by 51.8% which is comparable to corn stover. Our results highlight that in comparison to conventional agriculture stover, lignocellulosic Paulownia biomass can be potential candidate for clean energy production with prospective of sustainable supply.
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