Modelling non-ideal bio-physical-chemical effects on high-solids anaerobic digestion of the organic fraction of municipal solid waste

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:238

Article

Pastor-Poquet, Vicente^1,2  Papirio, Stefano³  Steyer, Jean-Philippe²  Trably, Eric²  Escudie, Renaud²  Esposito, Giovanni¹ 

[1] Univ Cassino & Southern Lazio, Dept Civil & Mech Engn, Via Di Biasio 43, I-03043 Cassino, FR, Italy

[2] Univ Montpellier, LBE, INRA, 102 Ave Etangs, F-11100 Narbonne, France

[3] Univ Napoli Federico II, Dept Civil Architectural & Environm Engn, Via Claudio 21, I-80125 Naples, Italy

关键词: High-solids anaerobic digestion model;    Non-ideal bio-physical-chemical corrections;    Ionic strength;    Total solids dynamics;    Ammonia inhibition;   

DOI  :  10.1016/j.jenvman.2019.03.014

来源: Elsevier

【 摘 要 】

This study evaluates the main effects of including 'non-ideal' bio-physical-chemical corrections in high-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW), at total solid (TS) between 10 and 40%. As a novel approach, a simple 'non-ideal' module, accounting for the effects of ionic strength (I) on the main acid-base equilibriums, was coupled to a HS-AD model, to jointly evaluate the effects of 'non-ideality' and the TS content dynamics on the HS-AD bio-physical-chemistry. 'Non-ideality' influenced the pH, concentration of inhibitors (i.e. NH3), and liquid-gas transfer (i.e. CO2), particularly at higher TS (i.e. >= 20%). Meanwhile, fitting the experimental data for batch assays at 15% TS showed that HS-AD of OFMSW might be operated at I >= 0.5 M. Therefore, all HS-AD simulations should account for 'non-ideal' corrections, when assessing the main inhibitory mechanisms (i.e. NH3 buildup and acidification) potentially occurring in HS-AD of OFMSW.

【 授权许可】

Free