Preprint Case Report Version 1 Preserved in Portico This version is not peer-reviewed

Anaerobic Digestion Remediation in Three Full-Scale Biogas Plants Through Supplements Addition

Version 1 : Received: 30 May 2023 / Approved: 1 June 2023 / Online: 1 June 2023 (04:50:42 CEST)

A peer-reviewed article of this Preprint also exists.

Economou, E.A.; Dimitropoulou, G.; Prokopidou, N.; Dalla, I.; Sfetsas, T. Anaerobic Digestion Remediation in Three Full-Scale Biogas Plants through Supplement Additions. Methane 2023, 2, 265-278. Economou, E.A.; Dimitropoulou, G.; Prokopidou, N.; Dalla, I.; Sfetsas, T. Anaerobic Digestion Remediation in Three Full-Scale Biogas Plants through Supplement Additions. Methane 2023, 2, 265-278.

Abstract

Additives can improve the efficiency of anaerobic digestion by increasing biogas production, reducing air pollution, and preventing total ammoniacal nitrogen (TAN) inhibition. Biological or chemical supplementation can also improve the economic efficiency of anaerobic digestion. However, the effects of specific additives on biogas production can vary depending on the type of supplement used. This research utilizes the additives on an industrial scale and monitors the optimization of the anaerobic digestion operating parameters after their addition. The various AD additives were examined in a sufficient cycle of operation for three biogas plants located in northern Greece. In this manner, the effectiveness was investigated in multiple initial feeds and unstable operating situations caused by the seasonality of specific feedstocks. The existing operation state in the three biogas plants was recorded before and after adding the supplements. In all three cases, lower concentration levels were observed in many of the examined trace elements. Introducing additives proved to be a stabilization factor in AD performance and inhibition mediator.

Keywords

additives; anaerobic digestion; digestate; trace elements; zeolites

Subject

Environmental and Earth Sciences, Waste Management and Disposal

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