Emergy Evaluation Indices for Valuing Construction and Demolition Wastes Recycling

This paper presents to evaluate construction and demolition waste's recycling by integrating economical, social, and environmental aspects. Traditional cost-benefit analysis for recycling wastes based on money does not consider social, environmental benefits. Making recycling trajectories choices that are ecologically conscious requires Emergy analysis of both economic and environmental impacts. This paper sums up success and shortage of using Emergy theory to evaluate solid wastes recycling from four aspects including system boundary, system structure, evaluating indices and Emergy method characteristic. An new Emergy evaluation indices for valuing construction and demolition wastes recycling is presented.