Enhanced bioethanol production using atmospheric cold plasma-assisted detoxification of sugarcane bagasse hydrolysate

Shin Ping Lin, Tai Ching Kuo, Hsueh Ting Wang, Yuwen Ting, Chang Wei Hsieh, Yu Kuo Chen, Hsien Yi Hsu, Kuan Chen Cheng

Research output: Contribution to journalArticle

Abstract

The current study used acid hydrolysis of lignocellulosic materials to obtain fermentable sugar for bioethanol production. However, toxic compounds that inhibit fermentation are also produced during the process, which reduces the bioethanol productivity. In this study, atmospheric cold plasma (ACP) was adopted to degrade the toxic compounds within sulfuric acid-hydrolyzed sugarcane bagasse. After ACP treatment, significant decreases in toxic compounds (31% of the formic acid, 45% of the acetic acid, 80% of the hydroxymethylfurfural, and 100% of the furfural) were observed. The toxicity of the hydrolysate was low enough for bioethanol production using Kluyveromyces marxianus. After adopting optimal ACP conditions (200 W power for 25 min), the bioethanol productivity improved from 0.25 to 0.65 g/L/h, which means that ACP could effectively degrade toxic compounds within the hydrolysate, thereby enhancing bioethanol production. Various nitrogen substitute was coordinated with detoxified hydrolysate, and chicken meal group presented the highest bioethanol productivity (0.45 g/L/h).

Original languageEnglish
Article number123704
JournalBioresource Technology
Volume313
DOIs
Publication statusPublished - Oct 2020

Keywords

  • Acid hydrolysis
  • Bioethanol
  • Chicken meal
  • Cold plasma
  • Detoxification
  • Sugarcane bagasse

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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