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Coupling Biogas Upgradation and Dairy Wastewater Treatment for Simultaneous Carbon Capture and Bioelectricity Generation Using an Algae-Assisted Microbial Fuel Cell
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2024-09-12 , DOI: 10.1021/acssuschemeng.4c04954 Amitap Khandelwal 1 , Jaichander Swaminathan 2 , Stephen Nolan 3 , Piet N. L. Lens 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2024-09-12 , DOI: 10.1021/acssuschemeng.4c04954 Amitap Khandelwal 1 , Jaichander Swaminathan 2 , Stephen Nolan 3 , Piet N. L. Lens 1
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This study demonstrates the application of an algae-assisted microbial fuel cell (AMFC) in biogas upgradation. A proof-of-concept lab-scale biorefinery is presented that couples raw biogas upgradation with dairy wastewater treatment using an integrated approach of a bicarbonate-based integrated carbon capture and algae production system (BICCAPS) and a microbial fuel cell (MFC). The treated biogas had a CH4 content of 85–93% with no traces of CO2, H2S, or NH3. The system was able to remove H2S and NH3 from biogas with high sulfide (961 to 2800 ppm) and ammonia (1300 to 2800 ppm) concentrations. The power and current densities obtained from the MFC were 17.3 mW/m2 and 170 mA/m2, respectively. The normalized energy recovery (NERV) from this process was 6.91 kW h/m3. The CO2 captured in the form of bicarbonate led to a total algal biomass production of 6.8 (±0.15) g/L. Integrating the BICCAPS with an algae-assisted MFC makes the overall process more sustainable, as it can simultaneously treat wastewater, generate bioelectricity, upgrade biogas, and mitigate carbon (CO2) and nitrogen (NH3) emissions.
中文翻译：
使用藻类辅助微生物燃料电池将沼气升级和乳制品废水处理结合起来，同时进行碳捕获和生物发电
本研究展示了藻类辅助微生物燃料电池（AMFC）在沼气升级中的应用。提出了一个概念验证的实验室规模生物精炼厂，该工厂使用基于碳酸氢盐的集成碳捕获和藻类生产系统 (BICCAPS) 和微生物燃料电池 (MFC) 的集成方法，将原沼气升级与乳制品废水处理结合起来。处理后的沼气的CH 4含量为85-93%，不含痕量CO 2 、H 2 S或NH 3 。该系统能够从硫化物（961 至 2800 ppm）和氨（1300 至 2800 ppm）浓度较高的沼气中去除 H 2 S 和 NH 3 。从MFC获得的功率和电流密度分别为17.3mW/m 2和170mA/m 2 。该过程的归一化能量回收（NER V ）为6.91 kW h/m 3 。以碳酸氢盐形式捕获的CO 2导致藻类生物质总产量为6.8 (±0.15) g/L。 BICCAPS 与藻类辅助 MFC 的集成使整个过程更加可持续，因为它可以同时处理废水、产生生物电、升级沼气并减少碳 (CO 2 ) 和氮 (NH 3 ) 排放。
更新日期：2024-09-12
中文翻译：
使用藻类辅助微生物燃料电池将沼气升级和乳制品废水处理结合起来，同时进行碳捕获和生物发电
本研究展示了藻类辅助微生物燃料电池（AMFC）在沼气升级中的应用。提出了一个概念验证的实验室规模生物精炼厂，该工厂使用基于碳酸氢盐的集成碳捕获和藻类生产系统 (BICCAPS) 和微生物燃料电池 (MFC) 的集成方法，将原沼气升级与乳制品废水处理结合起来。处理后的沼气的CH 4含量为85-93%，不含痕量CO 2 、H 2 S或NH 3 。该系统能够从硫化物（961 至 2800 ppm）和氨（1300 至 2800 ppm）浓度较高的沼气中去除 H 2 S 和 NH 3 。从MFC获得的功率和电流密度分别为17.3mW/m 2和170mA/m 2 。该过程的归一化能量回收（NER V ）为6.91 kW h/m 3 。以碳酸氢盐形式捕获的CO 2导致藻类生物质总产量为6.8 (±0.15) g/L。 BICCAPS 与藻类辅助 MFC 的集成使整个过程更加可持续，因为它可以同时处理废水、产生生物电、升级沼气并减少碳 (CO 2 ) 和氮 (NH 3 ) 排放。
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