Sridevi, V.Suriapparao, D.V.Tukarambai, M.Terapalli, A.Ramesh, R.Sankar Rao, C.S.Gautam, R.Moorthy, J.V.Suresh Kumar, C.2026-02-042022Bioresource Technology, 2022, 360, , pp. -9608524https://doi.org/10.1016/j.biortech.2022.127589https://idr.nitk.ac.in/handle/123456789/22429Rice husk (RH) and polystyrene (PS) wastes were converted into value-added products using microwave-assisted catalytic co-pyrolysis. The graphite susceptor (10 g) along with KOH catalyst (5 g) was mixed with the feedstock to understand the products and energy consumption. RH promoted the char yield (20–34 wt%) and gaseous yields (16–25 wt%) whereas PS enhanced the oil yield (23–70 wt%). Co-pyrolysis synergy induced an increase in gaseous yields (14–53 wt%) due to excessive cracking. The specific microwave energy consumption dramatically decreased in co-pyrolysis (5–22 kJ/g) compared to pyrolysis (56–102 kJ/g). The pyrolysis index increased (17–445) with the increase in feedstock quantity (5–50 g). The obtained oil was composed of monoaromatics (74%) and polyaromatics (18%). The char was rich in carbon content (79.5 wt%) and the gases were composed of CO (24%), H<inf>2</inf> (12%), and CH<inf>4</inf> (22%). © 2022 Elsevier LtdEnergy utilizationFeedstocksMicrowavesPotassium hydroxidePyrolysisCopyrolysisEnergy-consumptionMicrowave-assistedNonisothermalPolystyrene wasteRice huskSusceptorsSynergistic effectValue added productsWaste mixturesPolystyrenesaliphatic hydrocarbonaromatic compoundbiogascarboncharcoalcycloalkanecycloalkenepolystyrenezeolitepolystyrene derivativecatalystArticlecatalysischemical compositioncontrolled studycross validationenergy consumptionenvironmental temperaturegasheatingk fold cross validationmachine learningmass fragmentographymicrowave radiationpyrolysisrice husksupport vector machinevalorizationwasteheatOryzaCatalysisGasesHot Temperature