Browsing by Subject "Pyrolysis"
Now showing items 1-10 of 25
-
Changes in chemical and physical properties of South African caking coals during pyrolysis
(North-West University, 2015)The plasticity of coal during pyrolysis is of significant importance, since it affects the reactivity, porosity, particle size and the density of the char and thus also the behaviour of the char during further utilisation ... -
Chemical and structural characterization of char development during lignocellulosic biomass pyrolysis
(Elsevier, 2017)The chemical and structural changes of three lignocellulosic biomass samples during pyrolysis were investigated using both conventional and advanced characterization techniques. The use of ATR-FTIR as a characterization ... -
Coal-derived low smoke fuel assessment through coal stove combustion testing
(Elsevier, 2017)A study was undertaken to investigate the production of low smoke fuel from coal currently used in low-income households in South Africa. Pyrolysis of large coal lumps was studied as a possible production method, and an ... -
Comparison of industrial wastes as binder in the agglomeration of coal fines
(North-West University (South Africa)., 2021)The industries that consumed the most coal in South Africa, in 2015, were electricity generation, 53%, basic iron and steel manufacturing, 20%, and synthetic fuel and chemical industries, 10%, with the rest being used in ... -
The continuous depolymerization of filled polytetrafluoroethylene with a continuous process
(Wiley, 2008)A new method for beneficiating unfilled as well as filled polytetrafluoroethylene (PTFE) waste has been developed. This process does not use any carrier gas while forming the depolymerization products. It enables polymer ... -
The effect of acid demineralising bituminous coals and de-ashing the respective chars on nitrogen functional forms
(Elsevier, 2017)An opportunity presented itself to compare changes in nitrogen functional forms brought by the acid treatment of South African bituminous coals and their respective chars. X-ray photoelectron spectroscopy (XPS) was used ... -
The effect of acid washing on the pyrolysis products derived from a vitrinite-rich bituminous coal
(Elsevier, 2015)Extensive characterization of the pyrolysis products, derived from raw and acid washed samples of a vitrinite-rich South African bituminous coal is reported. Pyrolysis experiments were carried out with use of a modified ... -
The effect of added minerals on the pyrolysis products derived from a vitrinite-rich demineralised South African coal
(Elsevier, 2016)A better understanding of the behaviour of the inorganic matter present in coal will assist in more cost-effective operations and more consistency in product yield and composition during thermal processing. In this study, ... -
The effect of mineral addition on the pyrolysis products derived from typical Highveld coal
(2014)Mineral matter affect various coal properties as well as the yield and composition of products released during thermal processes. This necessitates investigation of the effect of the inherent minerals on the products derived ... -
Electrical resistivity of carbonaceous bed material at high temperature
(Springer Verlag, 2020)This study reports the effect of high-temperature treatment on the electrical properties of charcoal, coal, and coke. The electrical resistivity of industrial charcoal samples used as a reducing agent in electric arc ...