Publication detail

Vacuum evaporation of a liquid digestate from anaerobic digestion: a techno-economic assessment

VONDRA, M. MÁŠA, V. TOUŠ, M. KONEČNÁ, E.

Original Title

Vacuum evaporation of a liquid digestate from anaerobic digestion: a techno-economic assessment

Type

journal article in Scopus

Language

English

Original Abstract

The current boom of biogas plants (BGP) in Europe is associated with major digestate production. Digestate contains large amounts of nutrients but in low concentrations compared to artificial fertilizers. Storage and transportation of the digestate represents significant financial burden for BGP owners, especially in areas with intensive agricultural production. Vacuum evaporation (VE) is a technology which allows to efficiently reduce volume of the digestate. Benefits of VE include a simple design, operational reliability, and ability to utilize available waste heat. Integration of evaporation technology in BGP must respect concrete operating conditions and should be properly justified in terms of technical and economic aspects. This paper discusses central part of a mathematical model which may be used for technical-economic assessment of VE. Typical BGP is used in a case study to show how the integration of VE is facilitated with the increase in transportation distances and a decrease of electricity feed-in tariffs. It is shown that integration of VE is not necessarily beneficial for every BGP.

Keywords

biogas plant; liquid digestate; vacuum evaporation; waste heat; separation; nutrient recovery;

Authors

VONDRA, M.; MÁŠA, V.; TOUŠ, M.; KONEČNÁ, E.

Released

20. 8. 2018

Publisher

Italian Association of Chemical Engineering - AIDIC

Location

Milano, Italy

ISBN

2283-9216

Periodical

Chemical Engineering Transactions

Year of study

70

Number

1

State

Republic of Italy

Pages from

769

Pages to

774

Pages count

6

URL

https://www.aidic.it/cet/18/70/129.pdf

BibTex

@article{BUT152092,
  author="Marek {Vondra} and Vítězslav {Máša} and Michal {Touš} and Eva {Konečná}",
  title="Vacuum evaporation of a liquid digestate from anaerobic digestion: a techno-economic assessment",
  journal="Chemical Engineering Transactions",
  year="2018",
  volume="70",
  number="1",
  pages="769--774",
  doi="10.3303/CET1870129",
  issn="2283-9216",
  url="https://www.aidic.it/cet/18/70/129.pdf"
}