Details

Autor(en) / Beteiligte

• Gupte, Ameya Pankaj
• Di Vita, Noemi
• Myburgh, Marthinus W.
• Cripwell, Rosemary A.
• Basaglia, Marina
• van Zyl, Willem H.
• Viljoen-Bloom, Marinda
• Casella, Sergio
• Favaro, Lorenzo

Titel

Consolidated bioprocessing of the organic fraction of municipal solid waste into bioethanol

Ist Teil von

• Energy conversion and management, 2024-02, Vol.302, p.118105, Article 118105

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Food waste can be a promising bioethanol source.•First conversion of food waste to bioethanol using amylolytic yeast.•The higher food waste starch content was, the higher were the ethanol levels.•Co-fermentation of food waste and rice waste boosted bioethanol production. Organic fraction of municipal solid waste (OFMSW) has the potential to sustain large-scale biofuel production. So far, OFMSW is mainly converted into biogas by anaerobic digestion (AD), and limited research is available on its use to produce bioethanol. This paper reports, for the first time, the conversion of starch-rich OFMSW to bioethanol by using a novel yeast co-secreting both glucoamylase and alpha-amylase enzymes. As such, OFMSW can be converted to bioethanol without adding costly enzymes following a consolidated bioprocessing (CBP) approach. The OFMSW, sampled at an industrial AD plant, was processed to bioethanol with an outstanding yield, approaching 100 % of the theoretical maximum. Moreover, the co-conversion of OFSMW with starch-rice waste, namely discolored rice (DR) available in large quantities close to the AD plant, was performed to test the feasibility of valorizing different waste substrates simultaneously. The ethanol levels reached 60 g/L, indicating that both the developed process and yeast strain have important features towards ethanol production from organic waste streams.