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04 October 2018 | Story UFS | Photo UFS
Prof Ashok Chapagain, recently appointed as Senior
Prof Ashok Chapagain, recently appointed as Senior Professor in the Department of Agricultural Economics in the Faculty of Natural and Agricultural Sciences at the University of the Free State, is looking forward to working with key water-related sectors.

Prof Ashok Chapagain has recently been appointed as Senior Professor in the Department of Agricultural Economics in the Faculty of Natural and Agricultural Sciences at the University of the Free State (UFS). 

Water hub key in collaborations with research institutes

According to Prof Chapagain, the position provides a unique opportunity to help establish the university at the forefront of water research in South Africa. He is looking forward to cross-departmental collaborations on innovative research projects working with key water-related sectors, such as agriculture, business, mining etc., and establishing a water hub that would be key in external collaborations with other research institutes in South Africa and beyond.

Prior to his formal appointment at the UFS, Prof Chapagain has been remotely involved with the Department of Agricultural Economics since 2017 through his support to a number of research projects funded by the Water Research Commission (WRC). 

He is experienced in managing and coordinating international and interdisciplinary projects, ensuring technical quality and project delivery. He has vast cultural and geographical work experience, and specific water-related experience in the fields of integrated water resource management, water footprint assessment, industrial and agricultural efficiency and sustainability, irrigation, hydrology and watershed modelling, flood-risk management, river-basin planning and management, and environmental impact assessment. He has recently left the Water Footprint Network (The Netherlands), where he worked in the capacity of Science Director. Prior to joining the WFN, Prof Chapagain worked as Senior Water Adviser at WWF-UK for about six years.

Systems approach to address water issues

Prof Chapagain holds a PhD in the field of Water Resources Management and Policy Analysis from Delft University of Technology (The Netherlands), an MSc degree in Water and Environmental Resources Management from UNESCO- IHE Institute for Water Education (The Netherlands), and a Bachelor’s in Civil Engineering from IIT Roorkee (India). His professional career of 28 years can be broadly grouped under two inter-related blocks: development projects for 10 years (as an irrigation engineer in Nepal); research and application for 18 years (academia for eight years and applied work for 10 years in the Netherlands and UK). During his MSc and PhD research, he specialised in water resources and environmental management, integrated river-basin management, policy analysis, and systems analysis.

He regularly reviews articles for several scientific journals. Currently he serves as the Editor-in-Chief for the recently launched open access scientific journal H2Open, published by IWA Publishing. In addition, he serves as editor for five scientific journals, and frequently guest edits specific issues for peer-reviewed scientific journals. He has published four books, and 64 other articles and reports (25 scientific journal articles, 40 papers in conference proceedings, book chapters, and technical reports). His publications are widely cited, with 10 436 citations, and has an h-index of 34 and i10-index of 44. He applies a system approach in addressing issues on water, energy, and food securities, where managing local resources also includes global dimensions where key stakeholders are often cross-sectoral and situated outside the boxes. He has been involved in many national and international projects as a team leader, project leader, and international expert in several Asian, European, and South American countries.

For more information about Prof Chapagain and his role in the Department of Agricultural Economics, please contact Prof Chapagain at ChapagainAK@ufs.ac.za, or Dr Frikkie Maré at MareFA@ufs.ac.za or +27 51 401 2824 

News Archive

UFS venture cleans up acid mine drainage
2015-07-06

The system that puts oxygen back into the water.

Photo: Supplied

South Africa is one of the most important mining countries in the world, beginning in the 1870s. Although the mining industry has been responsible for significant development and employment, it pollutes the environment and waters sources. Through the joint effort of a well-known mining company, the University of the Free State, and the Technology Innovation Agency (UFS/TIA) SAENSE Group, a new treatment for Acid Mine Drainage (AMD) has been developed.

The system treats the major contaminants found in acid mining wastewater effectively.  
 
The UFS remediation systems use a reservoir tank into which the AMD is pumped. The water then flows passively (without using energy) to the Barium Carbonate Dispersed Alkaline Substrate (BDAS) system. The metals and anions in the AMD react chemically with the barium carbonate and precipitate (form solids). The solids stay in the tank while the clean water is released.

The efficacy and applicability of the research was demonstrated on site in Belfast, Mpumalanga where the team constructed a pilot plant in July 2014. This patented technology has treated 1 814 400 litres of Acid Mine Drainage to date with an outflow water quality that satisfies the South African National Standards (SANS) 241:2006 & 2011 regulations for drinking water.   

Rohan Posthumus from the (UFS/TIA) SAENSE Group said: “At this stage, we do not recommend that the water should be used as drinking water, but certainly it can lower water usage in mines while finding application in dust suppression of washing processes. The team would like to complete a full characterisation of the final released water. There are currently no toxic by-products formed, and even very basic filtration can make the outflow drinking water.”

Prof Esta van Heerden’s research group from the Department of Microbial, Biochemical, and Food Biotechnology has been working on AMD research for some time, but the development of the BDAS system was started in 2013 by post-doctoral student, Dr Julio Castillo, and his junior researcher, Rohan Posthumus.

The data from the BDAS system have led to two publications in peer-reviewed journals as well as a registered patent.

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