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In English

WBA Training: Biogas Upgrading Technology/Opportunities – in English

24 May, 9:00 AM11:00 AM BST

Choosing the best technology solution for your biogas upgrading

Trainer: Mario A. Rosato

  • Blog: Biogas and independence from Russian gas: will Spain beat Italy on time? Click here to read the full blog from Mario A. Rosato
  • How Online Services are Helping the Biogas Industry. Click hereto read the interview with Mario A. Rosato.

Learning outcome: To provide an overview of the different biogas upgrading technologies, the pros and cons of each and how to select the best technology in different scenarios


09:00 Differences between cleaning and purification of biogas

  • The thermodynamic benchmark:  the ideal Van t’Hof machine in the case of perfect and imperfect gas separation
  • Minimum work and minimum heat of imperfect separation
  • The ideal work of compression
  • The ideal work of liquefaction

10:00 Comparing different real-life processes under different operational conditions: case study.

a) Dry upgrading technologies

  • Activated carbon (PSA, pressure swing adsorption)
  • Engineered zeolites
  • Bed-packed amines
  • Selective membranes

b) Wet upgrading technologies

  • Water scrubbing
  • Water/PEG scrubbing (Selexol process)
  • Alkaline scrubbing (Benfield process)
  • Amine scrubbing
  • Solvent scrubbing (Rectisol process)

c) Emerging technologies

  • Cryogenic upgrading
  • Bioupgrading
  • electromethanogenesis

10:40 Selection of the most suitable process in each context

A summary of each technology and how to assess which process is most suited to your project

En Español

Entrenamiento WBA: Enriquecimiento de Biogás Tecnología Y Oportunidades – En Español 

24 de Mayo, 15:00 – 18:00 UK BST

Cómo seleccionar la tecnología más adecuada para su proyecto de biometano

Orador: Docente Mario A. Rosato

Blog: Biogás e independencia del gas ruso: España le ganará de mano a Italia? Click here to read the full blog from Mario A. Rosato


Programa del curso

  • Diferencias entre limpieza y purificación del biogás.
    • El límite termodinámico:la máquina ideal de Van t’Hof y la separación perfecta e imperfecta de mezclas de gases.
    • Mínimo trabajo y mínimo calor de separación imperfecta.
    • El trabajo ideal de compresión.
    • El trabajo ideal de licuefacción.
  • Comparar distintos procesos reales en condiciones operativas diferentes: caso de estudio.
    • Tecnologías de purificación a seco.
      1. Carbón Activado (PSA, pressure swing adsorption).
      2. Zeolitas sintéticas.
  • Aminas inmobilizadas.
  1. Membranas selectivas.
  • Tecnologías de purificación a húmedo.
    1. Lavado de gas con agua.
    2. Lavado con agua/PEG (proceso Selexol).
  • Lavado con soluciones alcalinas (Proceso Benfield).
  1. Lavado con soluciones de aminas.
  2. Lavado con solventes (Proceso Rectisol).
  • Tecnologías
    1. Purificación criogénica.
    2. Bioupgrading.
  • Electrometanogénesis.
  • Selección del proceso más adecuado a cada contexto.

Mario is the author of Managing Biogas Plants, A Practical Guide. He’s also provided professional training to more than 200 biogas plant operators and engineers, mostly in Italy.

Read Bio

Mario A. Rosato is an electrical, electronic, and environmental engineer, as well as a scientific journalist. He built his first home-sized digester in Argentina when he was aged 16. The son of a university professor and researcher, he learnt to employ sophisticated instruments in his favorite playground: his father’s lab. At the age of 25 he obtained a scholarship to specialize in renewable energies in Italy. At 28 he chose to leave the academic research world and devoted himself to the development of industrial solutions. In 1990 he settled in Italy and in 2000 he moved to Spain. In 2004 he became partner and scientific director of Bioenergia Aragonesa SL. In 2006 he patented the AFADS system, a multitrophic bioreactor for wastewater treatment. In 2009 he founded Sustainable Technologies SL in Barcelona. From 2010 he expanded his company’s activity to Italy, where he became professor at several private professional institutes. Since then he has trained more than 100 biogas plant managers in Italy and Spain. He installed a laboratory for applied research and routine anaerobic digestion tests in the Technologic Park of Pordenone in 2011. The same year he won The Economist’s award for the best entrepreneurial idea to tackle global climate change, based on the production of biohydrogen and the cultivation of bamboo in a circular economy cycle. Some months later, he received the Green Vision Award from Modus Vivendi magazine in Rome. His industrial solutions, based on original applied research, place him 4th in the worldwide Top Solvers list on In 2012, during the research project H2Ocean, funded by the European Commission’s 7th Framework Program, he develops a novel type of digester for marine biomass, specially conceived for offshore operation. In 2013 he won two international awards for the conceptual design of a domestic garbage digester, meant for low-income Indian families. Since 2014 he has been in charge of the column on bioenergy for, a specialized e-zine for agronomists and farming professionals. In 2015 he was a member of the technical commission in charge of redacting the Italian norm on the biochemical methane potential (BMP) test protocol, and his contribution focused on the error propagation analysis and improving both accuracy and precision.

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