AI Article Synopsis
- The study investigates how trace metals (TMs) can enhance the performance of anaerobic digestion (AD) to increase methane production through various dosing strategies.
- The researchers used a model-based approach to evaluate different dosing methods, including continuous, preloading, pulse dosing, and in-situ loading.
- The findings highlight that repeated pulse dosing at low concentrations (specifically, 5 µM every 5 days) optimally maximizes methane yield while minimizing metal loss, with the ideal dosing form varying based on reactor setup.
Article Abstract
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.
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| http://dx.doi.org/10.1016/j.biortech.2024.131222 | DOI Listing |
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