Resource recovery from synthetic polymers via microwave pyrolysis using different susceptors

Microwave assisted pyrolysis of plastic waste for production of fuels: a review

“…However, specific role of susceptor in the energy transfer or catalyzing effect on pyrolysis reaction is still not well known [15]. The effective use of dielectric material at industrial scale pyrolysis is a challenge since heating efficiency differs for different absorbents [3].…”

“…The infrared thermometer works without contact over a wide range of temperatures. But the IR thermometer sensors can only measure the surface temperature of the reactor which is lower than the temperature of the reaction mixture [15]. In this context only few studies have been able to measure the temperature within the reaction mixture [35][36][37].…”

“…But there is a new variant of optical fiber temperature probe which is made of sapphire crystalline fiber and has been used effectively in microwave pyrolysis [39]. In another published work, a thermocouple was used for temperature measurement inside a domestic microwave oven operating under low power of magnetron [15]. This facilitated measurement of temperature inside the reaction mixture during the off-time which is greater than the on-time period in contrast to high power microwave.…”

“…Literature spans through numerous works that utilized the dielectric materials as absorbents to achieve microwave assisted pyrolysis [12,15,19,41]. Carbonaceous materials like traditional coke, due to their excellent response to microwave absorption, heat tolerance and low cost has made them used widely in pyrolysis applications [20].…”

“…Accurate measurement of temperature within the reaction mixture is difficult [15]. Moreover, uneven distribution of scattered hotspots within the sample may result in non-uniform heating according to a simulation study on microwave design [16].…”