Mechanisms of biohydrogen recovery enhancement from peanut shell by C. guangxiense: Temperature pretreatment ranges from −80 to 100 °C. (May 2020)

• Record Type: Journal Article
• Authors: Qi, Nan; Hu, Xiaomin; Xin, Xiaotong; Ye, Sicen; Fu, Zhongtian; Zhao, Xin
• Is Part Of: Bioresource technology. Volume 304(2020)
• Publication Date: 2020-05
• Subjects: Bioenergy recovery -- Peanut shell -- Total reducing sugar -- Temperature pretreatment -- Cellulose; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123026
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Temperature pretreatment (−80 to 100 °C) on cellulose waste was firstly researched. Reducing sugar yield doubled at optimal pretreatment of 50 °C, 12 h. The peak bio-H2 yield of 1.25 ml/mg-TRS was obtained at −80 °C. Heat and freeze pretreatment realized in different ways of cracking and peeling. Abstract: The potential of low-cost bioenergy recovery from peanut shell was limited for its complex cellulose structure. In order to enhance the total reducing sugar (TRS) yield for bio-H2 production, peanut shell with heat (HT, 50–100 °C) or freezing pretreatment (FT, −80 to 0 °C) under different duration (0.5–12 h) was investigated. For uncovering the enhancement mechanisms, morphological feature and crystalline structure were analyzed by scanning electron microscope (SEM) and X-ray powder diffraction (XRD). The optimal pretreatment of 50 °C for 12 h was obtained with TRS yield increased 73.6%, while the H2 yield of 1.25 ml/mg-TRS was peaked with pretreatment at −80 °C. The SEM and XRD further demonstrated that mechanisms of HT and FT were realized through different ways, which were cracking and collapsing in HT, and delamination and peeling in FT, respectively.