E-mail: xchen@fzu.edu.cn, xuem.chen@hotmail.com (preferred)

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Qualifications

Ø 2017, PhD in Environmental Engineering, The University of Queensland, Australia.

Ø 2012, Bachelor in Water Supply and Drainage Engineering, Hohai University, China.

Relevant employment history

v 07/2020-now, Tenured Professorial Fellow (Professor Equivalent), College of Environment and Safety Engineering (Formerly College of Environment and Resources), Fuzhou University, China.

v 08/2017-07/2020, Marie Curie Fellow/Postdoc, Process and Systems Engineering Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Denmark.

Research focus/strength

Sustainable wastewater treatment technology for carbon neutrality and resources/energy recovery

Invited editorial activities

² As guest editor for Water Science and Technology Special Issue on Modelling and Integrated Assessment of Urban Water Systems

² 11/2022-now, as editorial board member for Sustainable Horizons

² 06/2020-now, as associate editor for Frontiers in Microbiology

² 04/2022-now, as editorial board member for Environmental Technology & Innovation

² 04/2021-now, as academic editor for PLoS One and PLoS Water

² 04/2021-now, as early career advisory board member for Chemical Engineering Journal Advances

² 12/2020-now, as editorial board member for Science of the Total Environment

² 12/2020-now, as early career advisory board member for Environmental Advances

² 11/2020-now, as editorial board member for Water

² 11/2020-now, as advisory board member for Heliyon

² 07/2019-now, as editorial board member for Journal of Environmental Management

Awards and prizes

Ø 2023, JSPS Invitational Fellowship, Japan Society for the Promotion of Science

Ø 2023, RINENG Young Investigator Award, Elsevier

Ø 2022, Second Prize in Outstanding Natural Sciences Academic Papers of Fujian Province, China

Ø 2020, Minjiang Scholar Professorship of Fujian Province, China

Ø 2019, 2017 Dean’s Award for Outstanding Higher Degree by Research Theses, The University of Queensland, Australia

Ø 2018, The Water Travel Awards for 2018, MDPI, Switzerland

Ø 2016, The AWMC Award, The University of Queensland, Australia

Ø 2014, First Year Achievement Award at The University of Queensland EAIT Postgraduate Research Conference, Australia

Ø 2013, The University of Queensland International (UQI) Tuition Scholarship, Australia

Ø 2011, Yankai Scholarship, China

Ø 2010-2011, Honorary Title of Excellent Student and Excellent Model Student of Hohai University, China

Ø 2010, National Scholarship, Ministry of Education of the People's Republic of China

Ø 2009, First Prize for National English Contest for College Students, China

Research project involvement

As principal investigator

· Grant Number: 2023J01065, National Natural Science Foundation of Fujian, 2023-2026.

· Grant Number: 5210100078, National Natural Science Foundation of China, 2022-2024.

· Grant Number: TF2022-3, TJU-FZU Independent Innovation Fund, 2022-2022.

· Minjiang Scholar Professorship of Fujian Province, 2020-2023, Fuzhou University.

· Advanced modelling and control of nitrous oxide emissions from wastewater treatment plants, Marie Sklodowska-Curie Individual Fellowship, 2018-2020, European Commission.

As major participant

· Demonstration of a new control method to reduce nitrous oxide emissions from sewage treatment plants, Danish Water and Wastewater Association (DANVA) through the Water Sector Development and Demonstration Program (VUDP), 2017-2018, Denmark.

· Micro-managed biofilm - next generation environmental biotechnologies, Australian Research Council Discovery Project, 2013-2015, Australia.

· Establishing a missing link between the global nitrogen and carbon cycles - anaerobic methane oxidation coupled to denitrification, Australian Research Council Discovery Project, 2012-2014, Australia.

Leadership and professional activities

² 10/2022, Scientific committee member of 13^th IWA Conference on Instrumentation, Control and Automation (ICA 2022).

² Committee member of Water Treatment and Reuse, Chinese Society for Environmental Science.

² 04/2022-now, Committee member of Water Treatment and Reuse, Chinese Society for Environmental Science.

² 08/2020-now, Invited member of International Ecological Economy Promotion Association.

² 01/2020-now, Associated YWP member of the International Water Association (IWA) Modelling & Integrated Assessment (MIA) Specialist Group Management Committee.

² 09/2019, Organizing/scientific committee member of 10^th IWA Symposium on Modelling and Integrated Assessment Watermatex 2019, Copenhagen, Denmark.

² 10/2018, Co-organizer of Annual PROSYS Research Seminar, Technical University of Denmark, Denmark.

² 05/2015-09/2016, Seminar manager at Advanced Water Management Centre, The University of Queensland, Australia.

² 07/2014-06/2015, Vice-chair and industrial contact representative for 2015 EAIT Postgraduate Research Conference Committee, The University of Queensland, Australia.

Publication list

Invited book chapters

1. Chen, X., Al, R., Behera, C., Sin, G. (2018) Process synthesis, design, and control of wastewater treatment plants. Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier. (DOI:10.1016/B978-0-12-409547-2.14345-8)

2. Ni, B.-J., Pan, Y., Guo, J., Virdis, B., Hu, S., Chen, X., Yuan, Z. (2016) Chapter 16: Denitrification Processes for Wastewater Treatment. Metalloenzymes in Denitrification: Applications and Environmental Impacts (Eds. Isabel Moura and José J. G. Moura; Co-Eds. Luisa Maia and Sofia R. Pauleta). Royal Society of Chemistry Metallobiology Series. 368-418.

Editorial

3. Saagi, R., Ramin, E., Chen, X. (2020) Editorial: Modelling and integrated assessment of urban water systems. Water Science & Technology.

First-authored/corresponding-authored journal publications

34. Chen, B., Li, F., Lin, Y., Yang, L., Wei, W., Ni, B.-J., Chen, X.* (2024) Degradation of chloroquine by ammonia-oxidizing bacteria: performance, mechanisms and associated impact on N₂O production. Environmental Science & Technology. XX(XX), XXXX-XXXX. * corresponding author

33. Hou, J., Zhu, Y., Liu, J., Lin, L., Zheng, M., Yang, L., Wei, W., Ni, B.-J., Chen, X.* (2024) Competitive Enrichment of Comammox Nitrospira in Floccular Sludge. Water Research. 251, 121151. * corresponding author

32. Huo, P., Deng, R., Yang, L., Liu, Y., Wei, W., Ni, B.-J. Chen, X.* (2023) Exposure of sulfur-driven autotrophic denitrification to hydroxylamine/hydrazine: Underlying mechanisms and implications for promoting partial denitrification and N₂O recovery. Chemical Engineering Journal. 477, 146943. * corresponding author

31. Chen, X., Zhao, Q., Yang, L., Wei, W., Ni, B.-J., Chen, X.* (2023) Impacts of granular sludge properties on the bioreactor performing nitrate/nitrite-dependent anaerobic methane oxidation/anammox processes. Bioresource Technology. 386, 129510. * corresponding author

30. Lin, Y., Chen, Y., Chen, J., Chen, J., Wei, W., Yang, L., Ni, B.-J., Chen, X.* (2023) Efficient chloroquine removal by Electro-Fenton with FeS₂ modified cathode: Performance, influencing factors, pathway contributions and degradation mechanisms. ACS ES&T Water. X(XX), XX-XX. * corresponding author

29. Zhu, Y., Hou, J., Liu, J., Huo, P., Yang, L., Zheng, M., Wei, W., Ni, B.-J., Chen, X.* (2023) Model-based development of strategies enabling effective enrichment and application of comammox bacteria in floccular sludge under mainstream conditions.Science of the Total Environment. 895, 165051. * corresponding author

28. Chen, X., Wang, D., Nie, W., Yang, L., Wei, W., Ni, B.-J. Chen, X.* (2023) Impacts of biofilm properties on start-up and performance of membrane biofilm reactor performing anammox and nitrate/nitrite-dependent anaerobic methane oxidation integrated processes: A model-based investigation. ACS ES&T Water. 3(4), 1141-1149. * corresponding author

27. Deng, R., Huo, P., Chen, X.*, Chen, Z., Yang, L., Liu, Y., Wei, W., Ni, B.-J. (2023) Towards efficient heterotrophic recovery of N₂O via Fe(II)EDTA-NO: A modeling study. Science of the Total Environment. 859, 160285. * corresponding author

26. Chen, X., Chen, X.*, Zeng, R.-J., Nie, W., Yang, L., Wei, W., Ni, B.-J. (2023) Instrumental Role of Bioreactors in Nitrate/Nitrite-Dependent Anaerobic Methane Oxidation-Based Biotechnologies for Wastewater Treatment: A Review. Science of the Total Environment. 857, 159728. * corresponding author

25. Huo, P., Deng, R., Chen, X.*, Yang, L., Liu, Y., Wu, L., Wei, W., Ni, B.-J. (2023) Model-based evaluation of N₂O recovery as an energy source in sulfur-driven NO-based autotrophic denitrification. Chemical Engineering Journal. 453, 139732. * corresponding author

24. Lin, Y., Huo, P., Li, F., Chen, X.*, Yang, L., Jiang, Y., Zhang, Y., Ni, B.-J., Zhou, M. (2022) A critical review on cathode modification methods for efficient Electro-Fenton degradation of persistent organic pollutants. Chemical Engineering Journal. 450, 137948. * corresponding author

23. Chen, X.*, Li, F., Huo, P., Liu, J., Yang, L., Li, X., Wei, W., Ni, B.-J. (2022) Influences of longitudinal gradients on methane-driven membrane biofilm reactor for complete nitrogen removal: A model-based investigation. Water Research. 220, 118665. * corresponding author

22. Chen, X.*, Liu, J., Huo, P., Li, F., Yang, L., Wei, W., Ni, B.-J. (2022) Influences of granule properties on the performance of autotrophic nitrogen removal granular reactor: a model-based evaluation. Bioresource Technology. 356, 127307. * corresponding author

21. Chen, X., Chen, H., Yang, L., Wei, W., Ni, B.-J.* (2022) A Comprehensive Analysis of Evolution and Underlying Connections of Water Research Themes in the 21^st Century. Science of the Total Environment. 835, 155411.

20. Chen. X.*, Li. F. (2022) Bibliometric Analysis of N₂O Research in Wastewater Systems in 2000-2020. Environmental Engineering. 40(6), 000-000. Just accepted. * corresponding author

19. Huo, P., Chen. X.*, Yang, L., Wei, W., Ni, B.-J. (2022) Modeling of Sulfur-Driven Autotrophic Denitrification Coupled with Anammox Process. Bioresource Technology. 349, 126887. * corresponding author

18. Chen, X.*, Huo, P., Liu, J., Li, F., Yang, L., Li, X., Wei, W., Liu, Y., Ni, B.-J.* (2021) Model Predicted N₂O Production from Membrane-Aerated Biofilm Reactor is Greatly Affected by Biofilm Property Settings. Chemosphere. 281, 130861. * joint corresponding authors

17. Zuo, L., Yao, H.*, Li, H., Jia, F., Wei, W., Liu, Y, Ni., B.-J., Chen, X.* (2021) Modeling of Completely Autotrophic Nitrogen Removal Process with Salt and Glycine Betaine Addition. Chemosphere. 264, 128474. * joint corresponding authors

16. Chen, X.*, Yang, L., Sun, J., Wei, W., Liu, Y., Ni, B.-J.* (2020) Influences of Longitudinal Heterogeneity on Nitrous Oxide Production from Membrane-Aerated Biofilm Reactor: A Modeling Perspective. Environmental Science & Technology. 54(17), 10964-10973. * joint corresponding authors

15. Chen, X.*, Rodríguez, Y., López, J., Muñoz, R., Ni, B.-J., Sin, G. (2020) Modeling of Polyhydroxyalkanoate Synthesis from Biogas by Methylocystis hirsuta. ACS Sustainable Chemistry & Engineering. 8(9), 3906-3912. * corresponding author

14. Chen, X.*, Mielczarek, A.T., Habicht, K., Andersen, M.H., Thornberg, D., Sin, G*. (2019) Assessment of Full-Scale N₂O Emission Characteristics and Testing of Control Concepts in an Activated Sludge Wastewater Treatment Plant with Alternating Aerobic and Anoxic Phases. Environmental Science & Technology. 53(21), 12485-12494. * joint corresponding authors

13. Chen, X., Yang, L., Sun, J., Dai, X., Ni, B.-J. (2019) Modelling of Simultaneous Nitrogen and Thiocyanate Removal through Coupling Thiocyanate-Based Denitrification with Anaerobic Ammonium Oxidation. Environmental Pollution. 253, 974-980.

12. Chen, X., Sin, G., Ni, B.-J. (2019) Impact of Granule Size Distribution on Nitrous Oxide Production in Autotrophic Nitrogen Removal Granular Reactor. Science of the Total Environment. 689, 700-708.

11. Chen, X.*, Ni, B.-J*. Sin, G. (2019) Nitrous Oxide Production in Autotrophic Nitrogen Removal Granular Sludge: A Modeling Study. Biotechnology and Bioengineering. 116(6), 1280-1291. * joint corresponding authors (Editor’s Choice Article)

10. Chen, X., Lai, C.-Y., Fang, F., Zhao, H.-P., Dai, X., Ni, B.-J. (2019) Model-Based Evaluation of Selenate and Nitrate Reduction in Hydrogen-Based Membrane Biofilm Reactor. Chemical Engineering Science. 195, 262-270.

9. Chen, X., Yuan, Z., Ni, B.-J. (2018) Nitrite Accumulation inside Sludge Flocs Significantly Influencing Nitrous Oxide Production by Ammonium-Oxidizing Bacteria. Water Research. 143, 99-108.

8. Chen, X., Liu, Y., Peng, L., Ni, B.-J. (2017) Perchlorate, Nitrate, and Sulfate Reduction in Hydrogen-Based Membrane Biofilm Reactor: Model-Based Evaluation. Chemical Engineering Journal. 316, 82-90.

7. Chen, X., Ni, B.-J. (2016) Anaerobic conversion of hydrogen and carbon dioxide to fatty acids production in a membrane biofilm reactor: A modeling approach. Chemical Engineering Journal. 306, 1092-1098.

6. Chen, X., Ni, B.-J. (2016) Model-based evaluation on simultaneous nitrate and arsenite removal in a membrane biofilm reactor. Chemical Engineering Science. 152, 488-496.

5. Chen, X., Guo, J., Xie, G.-J., Yuan, Z., Ni, B.-J. (2016) Achieving complete nitrogen removal by coupling nitritation-anammox and methane-dependent denitrification: A model-based study. Biotechnology and Bioengineering. 113(5), 1035-1045.

4. Chen, X., Liu, Y., Peng, L., Yuan, Z., Ni, B.-J. (2016) Model-based feasibility assessment of membrane biofilm reactor to achieve simultaneous ammonium, dissolved methane, and sulfide removal from anaerobic digestion liquor. Scientific Reports. 6, 25114.

3. Chen, X., Guo, J., Xie, G.-J., Liu, Y., Yuan, Z., Ni, B.-J. (2015) A New Approach to Simultaneous Ammonium and Dissolved Methane Removal from Anaerobic Digestion Liquor: A Model-Based Investigation of Feasibility. Water Research. 85, 295-303.

2. Peng, L.*, Chen, X.*, Xu, Y., Liu, Y., Gao, S.-H., Ni, B.-J. (2015) Biodegradation of Pharmaceuticals in Membrane Aerated Biofilm Reactor for Autotrophic Nitrogen Removal: A Model-Based Evaluation. Journal of Membrane Science. 494, 39-47. * joint first authors

1. Chen, X., Guo, J., Shi, Y., Hu, S., Yuan, Z., Ni, B.-J. (2014) Modeling of Simultaneous Anaerobic Methane and Ammonium Oxidation in a Membrane Biofilm Reactor. Environmental Science & Technology. 48(16), 9540-9547.