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Applied energy v.212, 2018년, pp.509 - 515   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Microbial electrolysis treatment of post-hydrothermal liquefaction wastewater with hydrogen generation

Shen, Ruixia (Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China ) ; Jiang, Yong (Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA ) ; Ge, Zheng (Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA ) ; Lu, Jianwen (Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China ) ; Zhang, Yuanhui (Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing ) ; Liu, Zhidan ; Ren, Zhiyong Jason ;
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    Abstract Hydrothermal liquefaction (HTL) directly converts wet organic waste into biocrude oil, but it also generates post-HTL wastewater (PHWW) with concentrated nutrients that require further treatment before discharge or reuse. While traditional technologies showed limited success, this study demonstrates that microbial electrolysis cell (MEC) can be an effective approach to treat the swine manure PHWW and recover H 2 for onsite HTL biocrude upgrading. The onsite H 2 production and utilization makes MEC an ideal wastewater treatment process for HTL operations. Using actual swine manure PHWW, the MEC reactors showed excellent removals of organics (90–98%) and nitrogen (57–93%) under various organic loadings, applied voltages, and flow rates. Increasing organic loadings and applied voltages showed positive influences on system performance, while changes of flow rates showed limited impacts. The highest H 2 production rate was 168.01 ± 7.01 mL/L/d with a H 2 yield of 5.14 ± 0.22 mmol/kg COD (3000 mg COD/L, 1.0 V), and the highest cathodic H 2 recovery and energy efficiency were 74.24 ± 0.11% and 120.56 ± 17.45%, respectively. System configuration and operation can be further optimized to improve system performance. Highlights Microbial electrolysis effectively removed both organics and nitrogen from post-HTL wastewater. It also generated high rate H 2 that can be used for biocrude upgrading. Operating conditions can be optimized by varying loading rate, applied voltages and others.


  • 주제어

    Organic wet waste .   Hydrothermal liquefaction .   Hydrogen production .   Microbial electrolysis cell .   Wastewater treatment.  

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