Abstract
Solid wastes from domestic, industrial and agricultural sectors cause acute economic and environmental problems. These issues can be partly solved by anaerobic digestion of wastes, yet this process is incomplete and generates abundant byproducts as digestate. Therefore, cultivating mixotrophic algae on anaerobic digestate appears as a promising solution for nutrient recovery, pollutant removal and biofuel production. Here we review mixotrophic algal cultivation on anaerobic waste digestate with focus on digestate types and characterization, issues of recycling digestate in agriculture, removal of contaminants, and production of biofuels such as biogas, bioethanol, biodiesel and dihydrogen. We also discuss applications in cosmetics and economical aspects. Mixotrophic algal cultivation completely removes ammonium, phosphorus, 17β-estradiol from diluted digestate, and removes 62% of zinc, 84% of manganese, 74% of cadmium and 99% of copper.
| Original language | English |
|---|---|
| Pages (from-to) | 3631–3656 |
| Number of pages | 26 |
| Journal | Environmental Chemistry Letters |
| Volume | 20 |
| Issue number | 6 |
| Early online date | 26 Jul 2022 |
| DOIs | |
| Publication status | Published - Dec 2022 |
Keywords
- Climate Change
- Algae
- anaerobic digestion
- anaerobic digestate
- Heavy metal
- Pollutants
- circular economy
- Circular bioeconomy
- net zero
- algae cultivation
Access to Document
- Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review
Copyright 2022 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.