大连理工大学主页平台管理系统 Li Yang--Home-- Ferroferric oxide triggered possible direct interspecies electron transfer between Syntrophomonas and Methanosaeta to enhance waste activated sludge anaerobic digestion.

Li Yang

Associate Professor Supervisor of Master's Candidates

Main positions:Assistant Professor

Gender:Female

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:School of Ocean Science and Technology

Discipline:Environmental Engineering

Business Address:D06-309

Contact Information:liyang1989@dlut.edu.cn

E-Mail:liyang1989@dlut.edu.cn

Paper Publications

Ferroferric oxide triggered possible direct interspecies electron transfer between Syntrophomonas and Methanosaeta to enhance waste activated sludge anaerobic digestion.

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Indexed by:Journal Papers

Date of Publication:2021-01-08

Journal:Bioresource technology

Volume:250

Page Number:79-85

ISSN No.:1873-2976

Key Words:Anaerobic sludge digestion,Direct interspecies electron transfer,Fe(3)O(4),Hydrogen,Zero-valent iron

Abstract:ZVI was reported to enrich H2-utilizing methanogens that enhanced interspecies H2 transfer, while Fe(III) oxide served as a conductive material to promote direct interspecies electron transfer (DIET). However, the interaction of these two modes in anaerobic digestion has not been clarified yet. In this study, when adding Fe3O4 and ZVI simultaneously into an anaerobic digester, the abundance of hydrogenotrophic methanogens decreased drastically compared to ZVI-added digester and Fe-free digester. However, the methane production of ZVI + Fe3O4 added digester were 68.9% higher than Fe-free digester and 20.0% higher than ZVI-added digester, respectively. Sludge reduction rate of these three digesters also showed similar results. These indicated that hydrogenotrophic methanogenesis was not the main reason for methanogenesis in Fe3O4-added digester. Instead, Syntrophomonas and Methanosaeta were specially enriched in Fe3O4-added digesters, which implied that the potential DIET between Syntrophomonas and Methanosaeta was likely a crucial reason for accelerating anaerobic digestion of waste sludge. Copyright © 2017 Elsevier Ltd. All rights reserved.

Pre One:Driving microbial sulfur cycle for phenol degradation coupled with Cr(VI) reduction via Fe(III)/Fe(II) transformation

Next One:Enhancing anaerobic degradation of phenol to methane via solubilizing Fe (III) oxides for dissimilatory iron reduction with organic chelates

Profile

副教授，硕士生指导教师。主要从事污染物的厌氧生物处理及资源化利用研究。2018年以来，作为项目负责人主持国家自然科学基金-青年基金项目1项，国家农业农村部重点研发计划项目子课题1项，教育部重点实验室开放基金项目1项，大连理工大学交叉探索课题1项；作为项目骨干参与“固废资源化”国家重大专项1项、辽宁省科技重大专项2项、国家自然科学基金-面上项目4项。目前，以第一作者或通讯作者身份在Environ Sci Technol、Water Res、J. Hazard Mater、Bioresour. Technol等SCI杂志上发表 JCR一区论文21篇，以其他作者身份参与发表SCI论文30余篇，授权5项中国发明专利, 1项国际发明专利。