Recovering Rare Earth Elements from leftovers of biogas production

Reference number 2018-04333
Coordinator Linköpings universitet - Institutionen för TEMA
Funding from Vinnova SEK 499 495
Project duration November 2018 - November 2019
Status Ongoing
Venture Banbrytande idéer inom industriell utveckling
Call Banbrytande idéer inom industriell utveckling 2018

Purpose and goal

Explore the potential and feasibility of different pre-treatments to recover Rare Earth Elements from digestate produced by Biogas reactors. The digestate will be submitted to the following treatments: drying, UV radiation, sonication, microwave and acid and alkaline treatments. These treatments will be applied alone and in combination in order to evaluate the best treatment to extract REE from the digestate. Digestate from different organic sources will be tested in order to identify the most abundant REE and the best treatment to recover these elements.

Expected results and effects

Biological, chemical and physical pre-treatments have been applied to improve organic matter degradability and the combination of different physical treatments resulted in higher degradation rates. Based on this principle, it is expected that the application of these physical pre-treatments should also result in a higher extraction of REE from the digestate.

Planned approach and implementation

A) The first 4 months of the project will be dedicated to identify what are the treatments that are the most effective in terms of release of REE from the digestate. B) A combination of treatments will be performed from month 5 to 8th in order to evaluate synergic effects from the combination of the treatments. C)T he last 4 months of the project will be used for data evaluation.

The project description has been provided by the project members themselves and the text has not been examined by our editors.