Process and technological aspects of solid waste thermal treatments

WEDNESDAY 14 APRIL 2021 / 10:00 - 13:00 (GMT+2)
Umberto Arena
, University of Campania “Luigi Vanvitelli” (IT)

This webinar will address basic concepts of thermochemical treatments of municipal and industrial solid wastes.

A short preface will describe the new role of thermochemical treatments in a modern waste management system, in the framework of our Recycling Society and taking into account the requirements of the Circular Economy.

The first part of the webinar will present a taxonomy of thermochemical treatments processes based on diverse criteria. The differences between combustion, gasification and pyrolysis will be analysed and discussed, with attention to the possible sub-categories that can be found inside each of these processes. The analysis will include the role of the main operating and process performance parameters.

The second part will focus on the main technologies that can be adopted for these treatments, with an essential list of case studies. Essential notes will inform about the necessity of reliable environmental sustainability and economic viability.


1. The new role of thermal treatments in a modern waste management system

  • Waste Management in a Recycling Society

2. Thermal treatments: process aspects

  • Combustion, Gasification and Pyrolysis of solid wastes
  • Operating and process performance parameters

3. Thermal treatments: technological aspects

  • Moving grate furnaces
  • Fluidized bed reactors
  • Rotary kilns
  • Moving bed reactors
  • Plasma reactors

4. Some case studies, with short notes about environmental sustainability and economic viability.



Umberto Arena, Ph.D. in Chemical Engineering, is full professor of “Solid waste management”, "Industrial Pollution Control Engineering", and “Life Cycle Assessment of Industrial Processes” at the University of Campania “Luigi Vanvitelli”. He is co-Editor-in-Chief of the Waste Management journal (Elsevier), since January 2018, and Associate Editor of the same journal from 2012 to 2017, with specific competence in thermal treatments and LCA studies for integrated waste management. He has been guest professor or visiting scientist in some universities and research centres (Tongji University of Shanghai (China), Nanyang Technological University of Singapore; Kuwait Institute of Scientific Research of Kuwait City) and lecturer in several international schools. He is Member of the Managing Board of the International Waste Working Group, and, in the same association, the leader of the Task Group on Thermal Treatments. He is team leader of national and international projects about processes and technologies for energy recovery from biomass and waste, waste management planning, and life cycle assessment of waste management treatments. He is also consultant of public institutions, industrial companies and research centres on similar topics. He is author of more than 100 scientific papers published in primary international scientific journals and wrote chapters in multi-authored books dedicated to Fluidized Bed Reactors, with specific attention to Gasification and Pyrolysis of different kind of solid wastes.