School of Chemical Engineering


Wonder is a current PhD student in the School of Chemical Engineering, at the University of Queensland, Australia. He holds an MSc (Chemical Engineering) from the University of Cape Town, South Africa and a BEng (Hons) Chemical Engineering from the National University of Science and Technology (NUST) in Zimbabwe. Wonder has industrial experience as he worked previously as a process engineer in a large leather processing company. His contributions involved overseeing production processes, process control, troubleshooting, quality control, product support and market research.

Wonder has demonstrated teamwork skills, research expertise, communication and translational capacity to multi-skilling others and increase productivity. He has great passion for making a positive difference, taking exciting and challenging roles to utilize his skills and expertise, identifying wider opportunities, development of new trends for increasing market shares and businesses profitability.

Research Interests

  • Froth flotation
  • Mineral surface chemistry
  • Polymer chemistry and characterisation


Research Project

Title: The development of modified starches for improving the flotation of carbonaceous copper sulphide minerals.

Advisors: Prof. Yongjun Peng and Dr. Brenton Fletcher

His PhD project involves the development of starch derivatives to improve selectivity in minerals processing by froth flotation. Working from Julius Kruttschnitt Minerals Research Centre (JKMRC), some techniques involved in his project include X-ray photoelectron (XPS), Fourier-transform infrared (FTIR) spectroscopy, Atomic Force Microscopy (AFM), Contact angle, Zeta Potential, Adsorption isotherms and Batch Flotation. As is widely known, the minerals industry provides backbone in terms of raw materials for building our cities, electricity generation, devices we use for transport, communication and lifestyle etc. His research seeks to meet the ever-increasing demand for the valuable and precious metals required in our modern industrialized society using environmentally benign protocols and creating a sustainable future. The research is at the centre of the growing advocacy for renewable technologies and green processing.

He is a registered graduate engineer with the Engineering Council of South Africa (ECSA) and currently working on registration with Engineers Australia (EA).

Key Publications

Chimonyo, W., Peng, Y. & Fletcher, B. 2019. The differential depression of an oxidized starch on the flotation of chalcopyrite and graphite. Journal of Cleaner Production. (Submitted for review).

Chimonyo, W., Wiese, J., Corin, K. & O’Connor, C. 2017. The use of oxidising agents for control of electrochemical potential in flotation. Minerals Engineering. 109(March):135–143.

Chimonyo, W., Corin, K.C., Wiese, J.G. & O’Connor, C.T. 2017. Redox potential control during flotation of a sulphide mineral ore. Minerals Engineering. 110(April):57–64.


PhD Student

Room: 631-210

p: +61 7 3346 9407