Back to Search
Start Over
Evaluation of batch mesophilic anaerobic digestion of waste Euro banknotes for methane Production: Preliminary studies and kinetic approach.
- Source :
-
Waste management (New York, N.Y.) [Waste Manag] 2024 Jan 01; Vol. 173, pp. 22-28. Date of Electronic Publication: 2023 Nov 11. - Publication Year :
- 2024
-
Abstract
- The European Central Bank is striving to find environmentally friendly alternative methods of waste disposal. In 2020, it decided to end the disposal of Waste Euro Banknotes (W€B) in landfills and planned to use them for recycling and/or energy recovery. Despite being recognized as an effective tool in a circular economy model, there are no reported studies on the use of W€B as a substrate in anaerobic digestion (AD). Thus, the aim of this research was to assess the viability of W€B to be converted into high-value-added energy products (mainly methane) through AD. W€B (€10 and €20 denominations) provided by the Bank of Spain were used. Biochemical methane potential (BMP) tests of pre-treated (grinded) and untreated W€B were assessed at mesophilic temperature. The ultimate methane yield was considerably higher for pre-treated W€B (334 ± 23 NmL CH <subscript>4</subscript> g VS <superscript>-1</superscript> <subscript>added</subscript> ) than for untreated W€B (297 ± 14 NmL CH <subscript>4</subscript> g VS <superscript>-1</superscript> <subscript>added</subscript> ). The Logistic or Sigmoidal kinetic model adequately fit the experimental data and allowed for obtaining the kinetic parameters of each case studied. In this sense, an increase of 22.4 % in the maximum methane production rate (R <subscript>max</subscript> ) was observed for the pre-treated W€B (52.5 ± 0.9 mL CH <subscript>4</subscript> (g VS·d) <superscript>-1</superscript> compared to the untreated W€B (16.2 ± 1.8 mL CH <subscript>4</subscript> (g VS·d) <superscript>-1</superscript> ). According to the obtained results, AD may be a good alternative for the energetic valorization and recycling of W€B.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Subjects :
- Anaerobiosis
Bioreactors
Methane
Sewage
Refuse Disposal methods
Subjects
Details
- Language :
- English
- ISSN :
- 1879-2456
- Volume :
- 173
- Database :
- MEDLINE
- Journal :
- Waste management (New York, N.Y.)
- Publication Type :
- Academic Journal
- Accession number :
- 37956477
- Full Text :
- https://doi.org/10.1016/j.wasman.2023.11.003