...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Characterization of Electrical Current-Generation Capabilities from Thermophilic Bacterium Thermoanaerobacter pseudethanolicus Using Xylose, Glucose, Cellobiose, or Acetate with Fixed Anode Potentials
【24h】

Characterization of Electrical Current-Generation Capabilities from Thermophilic Bacterium Thermoanaerobacter pseudethanolicus Using Xylose, Glucose, Cellobiose, or Acetate with Fixed Anode Potentials

机译：使用木糖，葡萄糖，纤维二糖或乙酸盐固定阳极电位，从嗜热嗜热嗜热细菌嗜热细菌中表征电流产生能力

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Thermoanaerobacter pseudethanolicus 39E (ATCC 33223), a thermophilic, Fe(Ⅲ)-reducing, and fermentative bacterium, was evaluated for its ability to produce current from four electron donors-xylose, glucose, cellobiose, and acetate-with a fixed anode potential (+ 0.042 V vs SHE) in a microbial electrochemical cell (MXC). Under thermophilic conditions (60 ℃), T. pseudethanolicus produced high current densities from xylose (5.8 ± 2.4 A m~(-2)), glucose (4.3 ±1.9 A m~(-2)), and cellobiose (5.2 ± 1.6 A m~(-2)). It produced insignificant current when grown with acetate, but consumed the acetate produced from sugar fermentation to produce electrical current. Low-scan cyclic voltammetry (LSCV) revealed a sigmoidal response with a midpoint potential of -0.17 V vs SHE. Coulombic efficiency (CE) varied by electron donor, with xylose at 34.8% ± 0.7%, glucose at 65.3% ± 1.0%, and cellobiose at 27.7% ± 1.5%. Anode respiration was sustained over a pH range of 5.4-8.3, with higher current densities observed at higher pH values. Scanning electron microscopy showed a well-developed biofilm of T. pseudethanolicus on the anode, and confocal laser scanning microscopy demonstrated a maximum biofilm thickness (L_f) greater than ～150 μm for the glucose-fed biofilm.
机译：对嗜热厌氧嗜热厌氧细菌39E（ATCC 33223）（一种嗜热，还原Fe（Ⅲ）的细菌）进行了评估，它具有从四个电子供体（木糖，葡萄糖，纤维二糖和乙酸盐）产生的电流的能力，且阳极电位固定（ + 0.042 V vs.SHE）在微生物电化学电池（MXC）中。在嗜热条件下（60℃），假二乙醇可产生木糖（5.8±2.4 A m〜（-2）），葡萄糖（4.3±1.9 A m〜（-2））和纤维二糖（5.2±1.6）的高电流密度。 m〜（-2））。当与乙酸盐一起生长时，它产生的电流很小，但是消耗了糖发酵产生的乙酸盐以产生电流。低扫描循环伏安法（LSCV）显示S型响应，相对于SHE的中点电位为-0.17V。库仑效率（CE）因电子供体而异，木糖为34.8％±0.7％，葡萄糖为65.3％±1.0％，纤维二糖为27.7％±1.5％。阳极呼吸在5.4-8.3的pH范围内持续，在较高的pH值下观察到较高的电流密度。扫描电子显微镜在阳极上显示出一个完善的假单胞菌生物膜，而共聚焦激光扫描显微镜显示，葡萄糖喂养的生物膜的最大生物膜厚度（L_f）大于〜150μm。

著录项

  • 来源
    《Environmental Science & Technology》 |2015年第24期|14725-14731|共7页
  • 作者

    Bradley G. Lusk; Qaiser Farid Khan; Prathap Parameswaran; Abdul Hameed; Naeem Ali; Bruce E. Rittmann; Cesar I. Torres;

  • 作者单位

    Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, United States;

    Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, United States,Department of Microbiology, Quaid-Ⅰ-Azam University, Islamabad, 45320, Pakistan;

    Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, United States,Department of Civil Engineering, Kansas State University, Manhattan, 2123 Fiedler Hall, Manhattan, Kansas 66502, United States;

    Department of Microbiology, Quaid-Ⅰ-Azam University, Islamabad, 45320, Pakistan;

    Department of Microbiology, Quaid-Ⅰ-Azam University, Islamabad, 45320, Pakistan;

    Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, United States;

    Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, United States,School for Engineering of Matter, Transport and Energy, Arizona State University, 501 E Tyler Mall, Tempe, Arizona 85287, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号