A Performance, Economic and Environmental Recycling Assessment (PEERA) Methodology was established part of a project funded by the UK government and the construction industry, allowed “Built Environment Action on Waste Awareness and Resource Efficiency” (BEAWARE). The project talked issues associated with: supply chain resource efficiency; and cross sector construction and demolition (C&D) waste recycling opportunities.
The PEERA technique is a waste mapping and decision support tool to explore C&D waste recycling potential opportunities. It speeches several problems such as: gathering lifecycle data on waste varieties and amounts; examining disposal and current recycling costs; detecting and addressing reuse and recycling limiting factors (e.g. economic, technical and environmental blockers); ranking C&D waste materials in terms of their recycling potential; and measuring the viability of reprocessing routes.
The PEERA methodology includes ten stages:
- Waste targeting
- Waste composition
- Waste prioritizing
- Waste causes, amounts and value
- Waste costs and current recycling station
- Recycling limiting factors
- Re-use/recycling possibilities
- Re-use/recycling requirements
- Re-use/recycling costs and markets.
The PEERA methodology was authenticated through a series of workshops and studies, during which information was collected directly from key supply chain stakeholders. More than 45 C&D waste materials were recognized during the initial waste targeting data collection. Through a systematic selecting and prioritizing process across the PEERA methodology stages, 10 C&D waste materials with high recycling potential were designated for the final two stages: recycling requirements (Stage 9) and recycling costs and market worth (Stage 10). Within the timeframe of the project, the emphasis has been focused towards waste materials that: happen in sufficient abundance; are chemically stable; are arranged at source; do not incur unnecessary collection, transportation and processing costs; and can be easily be related with markets for recycled products. As a result, Glass Reinforced Plastic (GRP) waste was designated for recycling experimental optimization programs leading to new applications. Hence, laboratory testing tests were directed towards measuring the potential of recycling GRP waste in rubber composites and existing composites. While the validation of the PEERA methodology led to products within the construction sector, it could be customized and used for an extensive range of potential applications in other businesses.