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Sugars Production from Municipal Forestry and Greening Wastes Pretreated by an Integrated Steam Explosion-Based Process

Biobased Fuels and Products Unit, Renewables Energies Division, Energy Department, Research Centre for Energy, Environment and Technology (CIEMAT), Complutense Av. 40, 28040 Madrid, Spain
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Energies 2020, 13(17), 4432; https://doi.org/10.3390/en13174432
Received: 30 June 2020 / Revised: 19 August 2020 / Accepted: 24 August 2020 / Published: 27 August 2020
(This article belongs to the Special Issue Latest Progress in Lignocellulosic Bioethanol Production)
Increasing awareness of resource sustainability and waste management has led to the search for solutions while promoting circular economy principles. Among all kinds of lignocellulosic biomass available, one with growing interest is municipal forestry and greening waste (MFGW). MFGW makes up an important part of waste streams of municipal solid waste and is a potential feedstock for biological conversion in a lignocellulosic biorefinery. This work studied the fermentable sugars production from MFGW after steam explosion (SE) pretreatment combined with other pretreatments such as dilute acid, organosolv, and metal salts. A range of pretreatment conditions was evaluated according to different parameters: sugars recovery, degradation product generation, and enzymatic hydrolysis yield. At selected pretreatment conditions (diluted acid plus SE, 195 °C, 10 min, and 60 mg H2SO4/g MFGW), 77% of potential sugars content in MFGW was obtained. The effect of solids loading and enzyme dose on glucose release and glucose yield on enzymatic hydrolysis were also determined. Up to 70% of the main sugars in the MFGW were recovered for the coupled pretreatment and enzymatic hydrolysis (45 FPU/g glucan enzyme loading and 20% dry matter solid consistency), resulting in 80 g/L glucose that could be further utilized for ethanol production. View Full-Text
Keywords: municipal forestry and greening wastes; pretreatment; enzymatic hydrolysis municipal forestry and greening wastes; pretreatment; enzymatic hydrolysis
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MDPI and ACS Style

Negro, M.J.; Álvarez, C.; Doménech, P.; Iglesias, R.; Ballesteros, I. Sugars Production from Municipal Forestry and Greening Wastes Pretreated by an Integrated Steam Explosion-Based Process. Energies 2020, 13, 4432. https://doi.org/10.3390/en13174432

AMA Style

Negro MJ, Álvarez C, Doménech P, Iglesias R, Ballesteros I. Sugars Production from Municipal Forestry and Greening Wastes Pretreated by an Integrated Steam Explosion-Based Process. Energies. 2020; 13(17):4432. https://doi.org/10.3390/en13174432

Chicago/Turabian Style

Negro, Maria J., Cristina Álvarez, Pablo Doménech, Raquel Iglesias, and Ignacio Ballesteros. 2020. "Sugars Production from Municipal Forestry and Greening Wastes Pretreated by an Integrated Steam Explosion-Based Process" Energies 13, no. 17: 4432. https://doi.org/10.3390/en13174432

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