Use of a kaolinitic‐illitic clay from Central African Republic and an organic waste for the production of porous ceramic materials

Abstract

Agricultural waste disposal is continuously increasing in developing and Third World countries. Indeed, world and national authorities are establishing strict regulations for the recovery of these wastes regarding environmental issues. Besides, some authors have pointed out the potential use of such wastes for manufacturing various materials. 1,2 In recent

Bioreceptive Ceramic Surfaces: Material Experimentations for Responsible Research and Design Innovation in Circular Economy Transition and “Ecological Augmentation”

“…Significant is the characterization of secondary materials and the selection of suitable substances to mix, both for the desired type of porosity and pore distribution and to ensure that no volatile substances that could damage kilns and human/environmental health or affect process stability (such as chlorine and sulfur) are produced [85]. Organic waste has been experimented on in recent years, due to the large amount of waste produced by the manufacturing and agricultural sectors and food industries, which are among the main contributors to solid waste [86,87], and because they contain large amounts of carbon and hydrogen that can promote pore formation during firing or sintering processes due to chemical degradation and the corresponding release of gas [88].…”

“…This is probably due to the morphology of the pores and the volatile substances resulting from the respective wastes: The fibrous porosity of cardboard occupies a slightly lower density than the granular porosity of coffee. At the same time, the latter releases a greater quantity of carbon during firing [88]. However, optimal results were achieved with both wastes, with weight losses up to 37.43%.…”