Shixiang Dai

Contact

Shixiang Dai
Ph.D. student

Department of Environmental Microbiology (jointly with WG Aquifer Biogeochemistry)
Working Group Electrobiotechnology
Aquifer Biogeochemistry

Helmholtz Centre for Environmental Research - UFZ
Permoserstr. 15, 04318 Leipzig, Germany

Phone +49 341 235 1368
shixiang.dai@ufz.de

Shixiang

CV / Scientific Career

10. 2018 - present

PhD student  at the Helmholtz Centre for Environmental Research – UFZ,
Department of Environmental Microbiology, Research Group of Electrobiotechnology

in cooperation with

Department of Isotope Biogeochemistry Research group Aquifer Biogeochemistry

2015-2018

Master of Engineering


Master thesis: Effect of humic acid on microbial degradation of polychlorinated biphenyls in soil

Soil and Environmental Bioremediation Research Center,

Key Laboratory of Soil Environment and Pollution Remediation,

Institute of Soil Science, Chinese Academy of Sciences

University of Chinese Academy of Sciences

2011-2015
Bachelor in Environment Engineering

College of Environmental Protection and Safety Engineering, University of South China, Hunan

Research interests

Pollution of the environment by chemical compounds is a matter of concern around the world. Biodegradation is the primary mechanism for removal of these pollutants. But environmental pollutants’ degradation is strongly limited by the presence of suitable electron acceptors/donors to sustain microbial respiration except the environmental factors, such as temperature, pH, concentration and so on.

Microbial Electrochemical Technologies (MET) offer the possibility to overcome the common lack of suitable electron acceptors/donors in anoxic environments by providing electrodes as terminal electron donors/acceptors. The system using MET are termed as Bioelectrochemical systems (BES). The BES have shown high versatility assisting bioremediation processes in wastewater, sediments and soil.

At present,most of research still focused on principle ability of remediation using BES. Meanwhile, most studies applied only one- or two-chamber BES, thus the influence of reactor configuration on bioremediation is still unclear. Yet, such research is necessary for designing BES for remediation for practical application. Many studies investigated microbial communities in BES remediation of different compounds, including phenol and sulfate, yet analysis of microbial interaction and remediation mechanisms are still lacking.

Thus further studies I want to elucidate the following questions:

1. Do reactor configuration and applied anode potential affect phenol degradation and degradation pathway in anoxic BES?
2. Are BES able to treat real phenol-containing wastewater?
3. What is the influence of reactor configuration on sulfate reduction in BES, and what is the mechanism and microbiome of sulfate reduction in BES?
4. What is the optimum condition of temperature and HRT for sulfate reduction in BES under flow operation?

Besides, I tried to assess the possiblility of treating complex wastewater (phenol and sulfate containing wastewater) using BES.

If you are interested in my research. please feel free to contact me at any time.

2022 (1)

2021 (1)