Sergio Ulgiati

TL;DR: In this paper, un estudio en donde se proporciona una revision extensa de la literatura de las two ultimas decadas, con el proposito de captar las principales caracteristicas y perspectivas of la CE (Economia circular): origenes, principios basicos, ventajas and desventajas, Modelado e implementacion of CE in los diferentes niveles (micro, meso, and macro) in todo el world.

TL;DR: In this paper, a reference set of indices based on emergy, for the evaluation of ecotechnological processes and whole economies is provided, which can be used to evaluate appropriate non-renewable investments in eco-technology to maximize their performance.

TL;DR: In this article, a Life Cycle Assessment (LCA) of four waste management strategies: landfill without biogas utilization, landfill with biOGAS combustion to generate electricity, sorting plant which splits the inorganic waste fraction (used to produce electricity via Refuse Derived Fuels, RDF) from the organic waste fraction, used to produce bio-diesel via anaerobic digestion, direct incineration of waste, and these scenarios are applied to the waste amount and composition of the Municipality of Roma (Italy).

TL;DR: In this paper, a Life Cycle Assessment (LCA) approach was used to evaluate the impact of crop residue removal on the final GHG balance and the cumulative primary energy demand.

TL;DR: A brief historical overview of the development of the concepts and theories of energy quality, and net energy that were the precursors to emergy is given in this paper, where the authors provide some insights into the types of processes and systems that have been evaluated using emergy methods.