Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Fractionation of Anaerobic Digestion Liquid Effluents Through Mechanical Treatment and Filtration

Version 1 : Received: 1 June 2023 / Approved: 1 June 2023 / Online: 1 June 2023 (16:36:29 CEST)

A peer-reviewed article of this Preprint also exists.

Sfetsas, T.; Sarikaki, G.; Chioti, A.G.; Tziakas, V.; Falaras, P.; Romanos, G.E. Fractionation of Anaerobic Digestion Liquid Effluents through Mechanical Treatment and Filtration. Sustainability 2023, 15, 11178. Sfetsas, T.; Sarikaki, G.; Chioti, A.G.; Tziakas, V.; Falaras, P.; Romanos, G.E. Fractionation of Anaerobic Digestion Liquid Effluents through Mechanical Treatment and Filtration. Sustainability 2023, 15, 11178.

Abstract

Organic wastes and by-products from several activities, including food industries, farming, and animal husbandry, are a hygiene threat when aerobically decomposed. Therefore, their manage-ment is crucial for public health. In this direction, anaerobic digestion (AD) systems may be the solution by transforming waste into energy, which may decrease the environmental impact. However, their efficacy should be carefully examined. In this innovative study, we evaluated the physicochemical and microbial characteristics of liquid digestate (LD) retrieved from organic animal wastes in northern Greece using nanofiltration. Using treatment technologies including physical (solid-liquid separation, microfiltration and nanofiltration) and biological (anaerobic digestion), heavy metals and microbial (i.e., Salmonella spp., Escherichia coli, Enterococcus faecalis) concentrations reduced and nutrients were recovered. This work sets the basis for the efficient management of liquid digestate. Our method may enable the use of treated liquid digestate for unlimited irrigation water and other industrial applications of water. Apart from the sanitation process, the recovery of nutrients for soil fertilization seems to be a more sustainable way for fu-ture agricultural practices.

Keywords

anaerobic digestion; liquid digestate; solid fibrous digestate; fractionation; microfiltration; nanofiltration

Subject

Environmental and Earth Sciences, Waste Management and Disposal

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.