Abstract

Ibuprofen degradation and energy generation in a single-chamber Microbial Fuel Cell (MFC) were evaluated using a bioanode fabricated from devil fish bone char (BCA) synthesized by calcination in air atmosphere. Its performance was compared with conventional carbon felt (CF). Bone char textural properties were determined by nitrogen adsorption. Before and after, the bacterial colonization on the materials was analyzed by environmental scanning electron microscopy. Energy generation was evaluated by electrochemical techniques as open-circuit potential, linear sweep voltammetry, and electrochemical impedance spectroscopy. Ibuprofen degradation was analyzed by High-Performance Liquid Chromatography-Ultraviolet, and the chemical oxygen demand (COD) removal was measured. Results showed a specific area of 136 m²/g for BCA, having enough space to immobilize microorganisms. The micrographs confirmed the biofilm formation on the electrode materials. Over the 14 days, MFC with BCA reached a maximum power density of 4.26 mW/m², 175% higher than CF, and an electron transfer resistance 2.1 times lower than it. This coincides with the COD removal and ibuprofen degradation efficiencies, which were 43.6% and 34% for BCA and 31.8% and 27% for CF. Hence, these findings confirmed that BCA in MFC could provide an alternative electrode material for ibuprofen degradation and energy generation.

摘要

使用由通过在空气中煅烧合成的魔鬼鱼骨炭 (BCA) 制成的生物阳极，评估了单室微生物燃料电池 (MFC) 中布洛芬的降解和能量产生。它的性能与传统的碳毡（CF）进行了比较。骨炭质构特性通过氮吸附测定。前后，通过环境扫描电子显微镜分析材料上的细菌定植情况。通过电化学技术评估能量产生，如开路电位、线性扫描伏安法和电化学阻抗谱。通过高效液相色谱-紫外线分析布洛芬降解，并测量化学需氧量 (COD) 去除率。结果显示比面积为 136 m ²/g 对于 BCA，有足够的空间来固定微生物。显微照片证实了电极材料上的生物膜形成。在 14 天内，带有 BCA 的 MFC 达到了 4.26 mW/m ²的最大功率密度，比 CF 高 175%，电子转移电阻比它低 2.1 倍。这与 COD 去除和布洛芬降解效率一致，BCA 分别为 43.6% 和 34%，CF 为 31.8% 和 27%。因此，这些发现证实了 MFC 中的 BCA 可以为布洛芬降解和能量产生提供替代电极材料。