George Susan, Rosaria Mattei Maria, Frunzo Luigi, Esposito Giovanni, van Hullebusch Eric D, Fermoso Fernando G
Department of Mathematics and Applications "Renato Caccioppoli", University of Naples Federico II, Naples, Italy; Instituto de la Grasa, Spanish National Research Council (CSIC), Seville, Spain.
Department of Mathematics and Applications "Renato Caccioppoli", University of Naples Federico II, Naples, Italy.
Bioresour Technol. 2024 Nov;411:131222. doi: 10.1016/j.biortech.2024.131222. Epub 2024 Aug 5.
Favourable effects of trace metals (TMs) on regulating anaerobic digestion (AD) performance are extensively utilised to improve methane yield. This study discusses a model-based approach to find out the best TM dosing strategies. The model has been applied to compare continuous, preloading, pulse dosing and in-situ loading. Simulations were also carried out to comprehend appropriate dosing form, dosing time and quantity of metals to be dosed. Model results show that the best way to dose TMs is repeated pulse dosing at low concentration levels in the optimum range with high frequency. Best dosing strategy for the system in this study was found to be 5 µM pulse loading at 5 days intervals as it gave maximum methane production and low effluent metal loss. Preferable dosing form depends on reactor configuration and this has been verified after model calibration with experimental data. Easily dissociable metal chlorides are ideal for continuous reactors.
痕量金属（TMs）对调节厌氧消化（AD）性能的有利影响被广泛用于提高甲烷产量。本研究讨论了一种基于模型的方法来找出最佳的TM投加策略。该模型已被用于比较连续投加、预加载、脉冲投加和原位加载。还进行了模拟以了解合适的投加形式、投加时间和投加金属的量。模型结果表明，投加TMs的最佳方法是在最佳范围内以低浓度水平高频重复脉冲投加。本研究中该系统的最佳投加策略是每隔5天进行5 μM的脉冲加载，因为这样可产生最大的甲烷产量且出水金属损失低。优选的投加形式取决于反应器配置，这在使用实验数据进行模型校准后得到了验证。易解离的金属氯化物对于连续反应器是理想的。
