Methyl methacrylate (MMA) and alumina recovery from waste artificial marble powder pyrolysis
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ORIGINAL ARTICLE
Methyl methacrylate (MMA) and alumina recovery from waste artificial marble powder pyrolysis Jeeban Poudel1 · You Min Lee1 · Hyeok Jin Kim1 · Sea Cheon Oh1 Received: 19 March 2020 / Accepted: 13 September 2020 © Springer Japan KK, part of Springer Nature 2020
Abstract Owing to various advantages of artificial marble compared to natural marble, its application has been rising exponentially, which has resulted in the generation of a significant amount of waste artificial marble through various processes. This study focuses on the recovery of methyl methacrylate from the waste artificial marble powder through pyrolysis reaction. The pyrolysis experiment was conducted in a horizontal tubular furnace at various pyrolysis temperatures (300–500 °C) at an interval of 50 °C. The liquid product was obtained through condensation. Liquid and solid product characteristics were studied. Significant cracking of the liquid product was obtained for 450 and 500 °C. From the solid phase analysis, it was observed that aluminum oxide (Al2O3) was obtained through the calcination of waste artificial marble powder at 800 °C. Keywords Waste artificial marble powder · Polymethyl methacrylate (PMMA) · Methyl methacrylate (MMA) · Pyrolysis · Alumina
Introduction The total estimated production of artificial marble in 2012 alone was 123.5 million tons [1], which is continually increasing due to a need of producing cheaper materials with high-strength [2] and durability. The fine particles of marble produced during cutting, although water is used as a coolant, are dispersed through various mediums. Almost 30% of the wastes in marble production industries are obtained as production wastes, which are partially reusable, and the majority of which is currently disposed to the surroundings [3–5]. The presence of this significant amount of waste is environmentally detrimental along with its injurious effects on public health while tarnishing the face of civilization. Tiny particles and powders produced during the extraction of the marbles from the quarry and during the processing of the blocks are included as marble wastes [6]. These wastes have unlimited possibilities of industrial application at a lower price to produce various useful products rather than
* Sea Cheon Oh [email protected] 1
Department of Environmental Engineering, Kongju National University, 1223‑24 Cheonan‑Daero, Seobuk, Chungnam, Cheonan‑si 330‑717, South Korea
disposing to landfill, which ultimately reduces the cost of landfill. This saves the land for alternative uses. Boulders and powders can be transformed into economic added value by considering it as a source of raw materials in various forms. Novel approaches need to be developed for commercial utilization of this waste artificial marble powder. Artificial marble primarily comprises of Al(OH)3 and unsaturated polyester [7] in the form of poly(methyl methacrylate) (PMMA) along with other additives and a small amount of Ca, Ti, Si, Fe, Cu, etc. Waste artificial marble powder can be applied as fil
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