• PhD, Chemistry, field of chemical technology, Sept 2022 Wroclaw University of Science and Technology,
  Poland.
• MSc, Chemistry, Analytical technologies and quality systems, Sept 2018, department of Analytical
  chemistry, Gdansk University of Technology, Gdansk-Poland under joint degree Erasmus mundus
  program, University of Algarve-Portugal and Gdansk University of Technology-Poland), Graduated
  Gdansk, Grade: Barso dobry. Many class courses chemical sciences such as biochemistry, biochemical
  analysis; environmental and life sciences; chemical instrumentation such as spectroscopy, chromatography
  and its hyphenation; on Quality systems and management including ISO17025, ISO9001, and data analysis.
• Post-graduate training in research in agricultural and biological engineering, specialized training in
  Spectrometry and chromatography: Analysis of metals and organic compounds from complex matrices.
  University of Liege-Bureau d’Etude, Environment et Analyses-Gembloux Agro-biotech, Belgium
• BSc Chemistry, February 2011, University of Rwanda, Faculty of Science.

• September 2022-Current: Quality control specialist, LG-Chem Qsense, Wroclaw
• February 2023-March 2023: Customer service specialist, OPSTalent, Wroclaw. Customer support in e-shopping of natural products and food supplements.
• October 2019-September 2022: Research Assistant (Early stage researcher, R1) and doctoral fellow under H2020- Maria Sklodowoska Curie Actions, ETN- REFLOW project fellow, phosphorus recovery for fertilizers from dairy wastes, grant number 814258, Wroclaw University of Science and Technology.
• October 2017-September 2018: MAESTRO6 project, with Prof Jacek Namieśnik Gdansk University of Technology, Poland. Working on hydrophobic interactions chromatography and lipophilicity of antioxidant phytochemicals (Prof Agata Kot-Wasik (agawasik@pg.edu.pl , Tel:+48 601 699 670, and Dr. Eng. Tomasz Chmiel, tomasz.chmiel@pg.edu.pl, Tel:+48 583472210), them as referees.
• April 2013-September 2019, Assistant and laboratory tutorial, University of Rwanda College of Agriculture, Soil science department, Soil and crop laboratory.

From Oct 2022 I am available to work on positions generally related to life sciences,
chemistry, chemical engineering, analytical chemistry and instrumentation, chemical science and their
applied streams (Agriculture, environmental, food and nutrition, biotechnology, microbial, chemometric,
etc). I am also open to positions of quality systems management, assurance, compliance, control and audit.
Furthermore, positions of English and French uses are welcome.

Resilient, ability to work with various personalities, minimum supervision, self-
determination, good communication skills with excellent communication in English and French, and

Africaans (Kinyarwanda and Kiswahili).

1. C. Numviyimana, J. Warchoł, N. Khalaf, J.J. Leahy, K. Chojnacka. Phosphorus recovery as struvite
   from hydrothermal carbonization liquor of chemically accumulated dairy sludge through extraction
   and precipitation. Journal of Environmental Chemical Engineering, Vol 10, Issue 1, 2022, IF=7.96
2.  C. Numviyimana, J. Warchoł, B. Ligas, K. Chojnacka. Nutrients Recovery from Dairy Wastewater
   by Struvite Precipitation Combined with Ammonium Sorption on Clinoptilolite. Materials, Vol 14,
   Issue 19, 2021, IF=3.7
3.  W. Shi, O. Fenton, S.M. Ashekuzzaman, K. Daly, J.J. Leahy, N. Khalaf, Y. Hu, K. Chojnacka, C.
   Numviyimana, M.G. Healy. An examination of maximum legal application rates of dairy processing
   and associated STRUBIAS fertilizing products in agriculture. Journal of Environmental management,
   Vol 301, 2022, IF=8.9
4.  C. Numviyimana, J. Warchoł, G. Izydorczyk, S. Baśladyńska, K. Chojnacka. Struvite production
   from dairy processing wastewater: Optimizing reaction conditions and effects of foreign ions through
   multi-response experimental models. Journal of the Taiwan Institute of Chemical Engineers, Vol
   117B, 2020, IF=5.4
5.  C. Numviyimana, T. Chmiel, A. Kot-Wasik, J. Namieśnik. Study of pH and temperature effect on
   lipophilicity of catechol-containing antioxidants by reversed phase liquid chromatography.
   Microchemical Journal, Vol 145, Page 380-387, 2019, IF=5.3

1. Desirability function for optimization of metal interferences and process conditions for struvite
   precipitation from processed cheese wastewater. Poster, International conference of biotechnology and
   fungi, BioTop, March 12th , 2022 Wroclaw.
2.  Hydrothermal carbonization process coupled to struvite precipitation for valorization of dairy sludge
   to commercial phosphorus fertilizing products. Oral presentation in X Congress of Chemical
   Technology, 12th May 2022, Wroclaw Poland. https://doi.org/10.37190/TeChem10_2022
3.  Phosphorus purification as struvite from hydrothermal carbonization liquor of chemically produced
   sludge. Poster, at the 4th European Sustainable Phosphorus Conference (ESPC4), and the 5th
   Phosphorus in Europe Research Meeting (PERM5), Vienna Austria. June 20-22,2022

• 2019-2022 EU-H2020, ITN-Maria Skłodowska-Curie doctoral fellowship award, REFLOW project, grant
  no:814258. Wroclaw University of Science and Technology (Poland).
• 2016-2018 EU-Joint Master Program-Erasmus mundus master’s scholarship award, EMQAL 9th edition,
  University of Algarve (Portugal) – Gdańsk University of Technology (Poland).
• 2015 ARES-CCD scholarship award (A Belgian cooperation award), for postgraduate training, University
  of Liege (Belgium).