Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043, Cassino, FR, Italy; LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France.
Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, via Claudio 21, 80125, Napoli, Italy.
J Environ Manage. 2019 May 15;238:408-419. doi: 10.1016/j.jenvman.2019.03.014. Epub 2019 Mar 11.
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. NH), and liquid-gas transfer (i.e. CO), 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. NH buildup and acidification) potentially occurring in HS-AD of OFMSW.
本研究评估了在总固体（TS）为 10%至 40%之间的高固体厌氧消化（HS-AD）中纳入“非理想”生物物理化学校正的主要影响，针对有机废物（OFMSW）的有机部分。作为一种新方法，一个简单的“非理想”模块，用于考虑离子强度（I）对主要酸碱平衡的影响，被耦合到 HS-AD 模型中，以共同评估“非理想性”和 TS 含量动态对 HS-AD 生物物理化学的影响。“非理想性”影响了 pH 值、抑制剂（即 NH）的浓度和液-气转移（即 CO），特别是在更高的 TS（即≥20%）下。同时，拟合 15%TS 批次试验的实验数据表明，OFMSW 的 HS-AD 可能在 I≥0.5 M 下运行。因此，在评估 HS-AD 中 OFMSW 可能发生的主要抑制机制（即 NH 积累和酸化）时，所有 HS-AD 模拟都应考虑“非理想”校正。
