Table 5.

Salient research themes in TI and WTM towards CRE

Research theme	Key terms	References
1. E- waste	Government, Behavior, Consumer, Waste disposal, Policymaker, Incentive, Extended Producer Responsibility, E-waste	Mayers et al. (2005), Aboelmaged (2021), Sharma et al. (2020), Dhir et al. (2021), Marke et al. (2020), Cole et al. (2019), Lu et al. (2015), Ottoni et al. (2020).
2. CRE transition	Supply chain, CRE strategy, Industrial symbiosis, Waste reduction, CRE model, Sustainability, Resource recovery, Resource	Alvarez and Ruiz-Puente (2017), Upadhyay et al. (2021), Priyadarshini and Abhilash (2020), Guzzo et al. (2021), Okafor et al. (2020).
3. Plastic waste	Recovery, Packaging, Prevention, Recycling, Contaminant, Value chain, polymers, Single-use Plastic	Bassi et al. (2020), Zhang et al. (2021b), Eriksen et al. (2018), Martín et al. (2021), Umar et al. (2021c) Lederer et al. (2020), Sherwood (2020b), Klemeš et al. (2020) Leissner and Ryan-Fogarty (2019).
4. MSTW	Recycling rate, Secondary raw Material, Waste Hierarch, Household Waste, Separate Collection, CRE package, European Union, Biowaste, Municipality	Petryk et al. (2019), Nanda and Berruti (2021), Hadzic et al. (2018), Zamri et al. (2021), Mian et al. (2017), Kumar and Samadder (2017), Penteado and de Castro (2021), Singh (2019).
5. Bio-based WTM	Biomass, Circular bioeconomy, Organic waste, Food waste, Biochar, Composting, Biorefinery, Fraction of MSTW,	Tsai et al. (2020), Kaszycki et al. (2021), Santagata et al. (2021), Imbert (2017), Zaborowska et al. (2021), Elkhalifa et al. (2019), Wojnowska-Baryła et al. (2020), Rekleitis et al. (2020), Ramesh Kumar et al. (2020), Ng et al. (2020).
6. Lifecycle assessment and ecological impacts	Climate Change, Landfill, Energy recovery, Environmental burden, Decision Making, Incineration, Greenhouse gas Emission, Disposal, Recycling process	Boldoczki et al. (2020), Asselin et al. (2020), Gallego-Schmid et al. (2018), Su et al. (2013), Gallego-Schmid et al. (2018), Raymond et al. (2020), Arushanyan et al. (2017), Sauve and Van Acker (2020), Miksa et al. (2020), Thomsen et al. (2018), Manjunatha et al. (2021) Kouloumpis et al. (2020)
7. Construction and Demolition WTM	Sewage sludge, Energy consumption, Material Efficiency, steel, Concrete, Slag, Building, Construction industry, Demolition	Mak et al. (2019), Zhang et al. (2021c), Li et al. (2020), Yazdani et al. (2021), Ma et al. (2020)