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Article Dans Une Revue Algal Research - Biomass, Biofuels and Bioproducts Année : 2015

Microalgae production in wastewater treatment systems, anaerobic digestion and modelling using ADM1

Résumé

An integrated microalgae-based system for urban wastewater treatment, microalgae production and bioenergy generation through anaerobic digestion was evaluated over a period of one year. The pilot HRAP was effective at removing COD (~ 80%) and ammonium (~ 95%) and robust, despite common variations in wastewater composition and weather conditions in the Mediterranean region. Biomass production showed a strong seasonality, reaching an annual average of 10 g TSS/m2·day and the highest values in spring (23 g TSS/m2·day). Conversely, the macromolecular composition was fairly constant (58% proteins, 22% carbohydrates and 20% lipids). Predominant microalgae species varied throughout the year, influencing biogas production. Indeed, the anaerobic biodegradability of harvested biomass was 20–25% in July–October 2012 and May–July 2013 and 25–38% in November 2012–April 2013. Adapting the content of particulate inert COD in Anaerobic Digestion Model No. 1 (ADM1) was crucial for model calibration. After adjustment, ADM1 was able to predict microalgae anaerobic digestion performance, which showed an average methane yield of 0.09 L CH4/g COD at 15 days HRT and 0.16 L CH4/g COD at 20 days HRT.

Dates et versions

hal-01167154 , version 1 (23-06-2015)

Identifiants

Citer

Fabiana Passos, Raquel Gutiérrez, Doris Brockmann, Jean-Philippe Steyer, Joan García, et al.. Microalgae production in wastewater treatment systems, anaerobic digestion and modelling using ADM1. Algal Research - Biomass, Biofuels and Bioproducts, 2015, 10, pp.55-63. ⟨10.1016/j.algal.2015.04.008⟩. ⟨hal-01167154⟩
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