| Title | Phyco-remediation of swine wastewater as a sustainable model based on circular economy |
|---|---|
| ID_Doc | 20570 |
| Authors | López-Pacheco, IY; Silva-Núñez, A; García-Perez, JS; Carrillo-Nieves, D; Salinas-Salazar, C; Castillo-Zacarías, C; Afewerki, S; Barceló, D; Iqbal, HNM; Parra-Saldívar, R |
| Title | Phyco-remediation of swine wastewater as a sustainable model based on circular economy |
| Year | 2021 |
| Published | |
| Abstract | Pork production has expanded in the world in recent years. This growth has caused a significant increase in waste from this industry, especially of wastewater. Although there has been an increase in wastewater treatment, there is a lack of useful technologies for the treatment of wastewater from the pork industry. Swine farms generate high amounts of organic pollution, with large amounts of nitrogen and phosphorus with final destination into water bodies. Sadly, little attention has been devoted to animal wastes, which are currently treated in simple systems, such as stabilization ponds or just discharged to the environment without previous treatment. This uncontrolled release of swine wastewater is a major cause of eutrophication processes. Among the possible treatments, phycoremediation seems to be a sustainable and environmentally friendly option of removing compounds from wastewater such as nitrogen, phosphorus, and some metal ions. Several studies have demonstrated the feasibility of treating swine wastewater using different microalgae species. Nevertheless, the practicability of applying this procedure at pilot-scale has not been explored before as an integrated process. This work presents an overview of the technological applications of microalgae for the treatment of wastewater from swine farms and the byproducts (pigments, polysaccharides, lipids, proteins) and services of commercial interest (biodiesel, biohydrogen, bioelectricity, biogas) generated during this process. Furthermore, the environmental benefits while applying microalgae technologies are discussed. |
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