evaluation of TGA for proximate analysis Mandla Maphumulo Sustainability RT&D Applied Chemistry & Microbiology 31 July 2017

Content Introduction Furnace method How TGA works Findings Questions Conclusion and Recommendations Questions 10-May-19

Introduction Proximate analysis

Proximate analysis Introduction Inherent moisture Ash Volatile matter Fixed carbon

Furnace and TGA methods Inherent moisture, Volatile matter, Ash and Fixed Carbon

Furnace method Sample 10-May-19

How TGA works 10-May-19

Volatile matter and Ash results on dry basis Findings Volatile matter and Ash results on dry basis

Findings 10-May-19

Continue… 10-May-19

Conclusion and Recommendations What needs to be done going forward

Conclusion and Recommendations The results show that the TGA and furnace methods are very comparable. The TGA method can therefore be used for proximate analysis. Although some results show some discrepancies, they are within ISO reproducibility limits and thus acceptable. TGA needs less human intervention, thus mitigate human error contribution on the accuracy of the analysis and give an analyst time to do other laboratory work. SANS committee should consider developing a standard for TGA. 10-May-19

QUESTIONS Thank You 10-May-19