Dr. Xiaying XIN

PhD in Environmental System Engineering, University of Regina, Canada
Staff title
Visiting Assistant Professor
Research Assistant Professor (SKLMP)

Dr. Xin received her Ph.D. in environmental system engineering from University of Regina in 2019, and worked as a postdoctoral Fellow in the Northern Region Persistent Organic Pollutant lab in Memorial University of Newfoundland from 2019 to 2021. She also worked for the Institute for Energy, Environment and Sustainable Communities and the Persistent and Emerging Organic Pollutants in the Environment (PEOPLE) CREATE Network of Canada. She is currently working as Research Assistant Professor at State Key Laboratory of Marine Pollution (SKLMP), holding a concurrent appointment as Visiting Assistant Professor at School of Energy and Environment (SEE), CityU.

Other Information

Research Interests

Dr. Xin’s research focuses on the development of emerging technologies and innovative methods to solve the problem of water pollution. She possesses strong expertise in the area of advanced water and wastewater treatment and resources recovery, nanotechnology and biotechnology for contaminant removal (e.g. harmful bacteria, emerging contaminants, heavy metals),  environmental impact and risk assessment, and water sustainability. Her research also focuses on using emerging technologies and approaches to explore contaminant removal mechanism, and conducting single cell analyses.

Position(s) available

Postdoctoral Researchers / Research Assistants / Research Associates

The appointee will conduct experiments and modelling to help develop emerging technologies and approaches to remove harmful bacterial, emerging contaminants, and heavy metals from water and wastewater; apply nanotechnology and biotechnology in water/wastewater treatment; and review literature, conduct data analysis, and prepare academic publications.

Candidates should possess a Bachelor's degree or a Master’s degree or a PhD degree in environmental engineering, environmental science, chemistry, biology, microbiology, or related disciplines. They should have excellent written and oral communication skills in English, and the ability to work independently as well as in a team. Preference will be given to those with statistical background and experience in lab experiments, computer programming and data management (e.g. Python, R, MATLAB). 

Interested individuals are encouraged to submit their CV and research statement to Dr. Xiaying Xin, xiayixin@cityu.edu.hk. Review of applications will begin immediately and will continue until the positions are filled.

City University of Hong Kong is an equal opportunity employer and we are committed to the principle of diversity. We encourage applications from all qualified candidates, especially applicants who will enhance the diversity of our staff.

Selected Publications

  • Q. Kang, S. Xing, X. Xin, B. Chen, Y. Chen, X. Ye, B. Zhang. Machine Learning­­–Aided Causal Inference Framework for Environmental Data Analysis: A COVID-19 Case Study. Environmental Science and Technology, DOI: org/10.1021/acs.est.1c02204 (2021).
  • J. Huang, G. Huang, X. Xin, D. Halstead, K. Gaetz, L. Benmerrouche, Y. Wu, N. Wang, Y. Fu, J. Zhang. Characterization of crop growth and in-vivo element fate in Canadian prairie under the interferences of tillage and residue treatment. Journal of Cleaner Production, 320, 128707 (2021).
  • X. Xin, G. Huang, D. Halstead, K. Gaetz, L. Benmerrouche, J. Huang, Y. Wu, J. Zhang, N. Wang, Y. Fu. "The Optimization of Canola Crop Production through Wheat Residue Management within a Western Canadian Context—A Case Study of Saint-Front, Saskatchewan." Sustainability 13, 18 (2021): 10459.
  • X. Xin, G. Huang, B. Zhang, Y. Zhou. Trophic transfer potential of nTiO2, nZnO, and triclosan in an algae-algae eating fish food chain. Aquatic Toxicology, 2021, 235, 105824.
  • X. Xin, G. Huang, B. Zhang. Review of Aquatic Toxicity of Pharmaceuticals and Personal Care Products to Algae, Journal of Hazardous Materials, 2020: 124619.
  • P. Song, G. Huang, C. An, X. Xin, P. Zhang, X. Chen, S. Ren, Z. Xu, and X. Yang, Exploring the Decentralized Treatment of Sulfamethoxazole-Contained Poultry Wastewater through Vertical-Flow Multi-Soil-Layering Systems in Rural Communities, Water Research, 188: 116480.
  • M. Yang, B. Chen, X. Xin, X. Song, J. Liu, G. Dong, L. Kenneth, B. Zhang. (2020). Interactions between microplastics and oil dispersion in the marine environment. Journal of Hazardous Materials, 123944.
  • X. Xin, G. Huang, C. An. C. Lu. Exploring the biophysicochemical alteration of green alga Asterococcus superbus interactively affected by TiO2-P25, nano-ZnO, and triclosan and illumination, Journal of Hazardous Materials, 2020: 122855.
  • X. Xin, G. Huang, C. An, & R. Feng. Interactive Toxicity of Triclosan and Nano-TiO2 to Green Alga Eremosphaera viridis in Lake Erie: A new perspective based on Fourier transform infrared spectromicroscopy and synchrotron-based X-ray fluorescence imaging. Environmental Science & Technology, 53 (16), 9884-9894 (2019).
  • X. Xin, G. Huang, C. An, H. Weger, G. Cheng, J. Shen, S. Rosendahl. Analyzing biochemical alteration of green algae during chronic exposure to triclosan based on synchrotron-based Fourier transform infrared spectromicroscopy. Analytical Chemistry, 91 (12): 7798-7806 (2019).
  • X. Xin, G. Huang, C. An, R. Raina-Fulton, and H. Weger, Insights into long-term toxicity of triclosan to freshwater green algae in Lake Erie, Environmental Science and Technology, 53 (4), 2189-2198 (2019).
  • X. Xin, G. Huang, C. An, C. Huang, H. Weger, S. Zhao, Y. Zhou, S. Rosendahl. Insights into the toxicity of triclosan to green microalga Chlorococcum sp. using synchrotron-based Fourier transform infrared spectromicroscopy: biophysiological analyses and roles of environmental factors. Environmental Science and Technology, 52 (4), 2295-2306 (2018).
  • X. Xin, G. Huang, X. Liu, C. An, Y. Yao, H. Weger, P. Zhang, and X. Chen. Molecular toxicity of triclosan and carbamazepine to green algae Chlorococcum sp.: a single cell view using synchrotron Fourier transform infrared spectromicroscopy. Environmental Pollution, 226, 12-20 (2017).
  • X. Xin, G. Huang, X. Zhou, W. Sun, C. Jin, W. Jiang, S. Zhao. Potential antifouling compounds with antidiatom adhesion activities from the sponge-associated bacteria, Bacillus pumilusJournal of Adhesion Science and Technology31(9), 1028-1043 (2017).
  • X. Xin, G. Huang, W. Sun, Y. Zhou, Y. Fan. FTIM: A factorial two-stage irrigation systems optimization model. Journal of Irrigation and Drainage Engineering, 142.2, 04015056 (2015).
  • C. Jin, X. Xin, S. Yu, J. Qiu, L. Miao, K. Feng, X. Zhou. Antidiatom activity of marine bacteria associated with sponges from San Juan Island, Washington, World Journal of Microbiology and Biotechnology, 30.4, 1325-1334 (2014).
Staff Image
Xiaying XIN
Contact Information
Office: YEUNG-G5422
Phone: +(852)-3442-7099
Fax: +(852)-3442-0688
Email: xiayixin@cityu.edu.hk
Research Interests
  • Water and Wastewater treatment
  • Bacteria Inactivation
  • Emerging Contaminant Removal
  • Environmental Impact and Risk Assessment