Prof Majozi started his professional career as a junior process engineer at Unilever in 1994. In 1996 he was appointed as a senior process engineer: competency improvement specialist at Dow AgroSciences and in 2002 he joined Sasol Technology as a technology leader for optimization and integration. He was appointed as an associate professor at University of Pretoria in 2004 and promoted to a full professor at the end of 2008. He was also an associate professor in computer science at the University of Pannonia in Hungary from 2005 to 2009.


Using his novel continuous-time framework as the basis, Prof Majozi developed a novel technique for wastewater minimisation in discrete chemical operations.  Johnson & Johnson (Pty) Ltd, East London, South Africa, used this technique to reduce their effluent by 20% by the end of 2007. In addition to wastewater minimization, he has successfully demonstrated how this model can be applied to minimization of energy in time dependent operations. He has also been the first researcher in his field to highlight and successfully model the impact of human intervention in batch chemical processes. In 2005 Prof Majozi developed a continuous process integration technique for systems involving both heat and mass transfer with the objective of minimising or eliminating effluent (liquid waste) in chemical industries. Prof Majozi’s contributions in this area involve a graphical targeting and design technique for systems that can be captured in two dimensions and a mathematical technique for simultaneous targeting and design of cooling water systems with more complicated constraints as usually encountered in practice.

The results of this work were implemented by African Explosives Limited (AEL) in Modderfontein wherein savings of more than 49% in effluent generation and almost R1 million per annum were realised. This work was the subject of the publication in South African Journal of Science. Currently, Prof Majozi and his students are collaborating with Sasol Technology on an Optimal Steam System Design Project aimed at debottlenecking the steam boilers at Sasol facilities. His work has earned him local and international recognition in the field of chemical engineering as indicated by the awards that he has received in recent years.