Investigating hydrothermal pretreatment of food waste for two-stage fermentative hydrogen and methane co-production

Lingkan Ding, Jun Cheng, Dan Qiao, Liangchen Yue, Gyokuyu Ri, Junhu Zhou, Kefa Cen

研究成果: Article査読

88 被引用数 (Scopus)

抄録

The growing amount of food waste (FW) in China poses great pressure on the environment. Complex solid organics limit the hydrolysis of FW, hence impairing anaerobic digestion. This study employed hydrothermal pretreatment (HTP) to facilitate the solubilization of FW. When HTP temperature increased from 100 to 200 °C, soluble carbohydrate content first increased to a peak at 140 °C and then decreased, whereas total carbohydrate content was negatively correlated with increasing temperature due to the enhanced degradation and Maillard reactions. Protein solubilization was dramatically promoted after HTP, whereas protein degradation was negligibly enhanced. The hydrogen and methane yields from hydrothermally pretreated FW under the optimum condition (140 °C, 20 min) through two-stage fermentation were 43.0 and 511.6 mL/g volatile solids, respectively, resulting in an energy conversion efficiency (ECE) of 78.6%. The ECE of pretreated FW was higher than that of untreated FW by 31.7%.

本文言語English
ページ(範囲)491-499
ページ数9
ジャーナルBioresource Technology
241
DOI
出版ステータスPublished - 2017 1 1

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 環境工学
  • 再生可能エネルギー、持続可能性、環境
  • 廃棄物管理と処理

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