Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
Bioresour Technol. 2013 Aug;142:101-8. doi: 10.1016/j.biortech.2013.05.025. Epub 2013 May 16.
To investigate functions and interactions of predominant microorganisms in microbial fuel cells (MFCs) for simultaneous electricity generation and Congo red decolorization, four strains were isolated from the anodic biofilm, and identified as Pseudomonas (M-P and I-P), Bacillus (M-B) and Aquamicrobium (I-A). Higher maximum power density (by 158.2% and 58.1%) but lower Congo red decolorization rate (by 3.2% and 5.9%) were achieved in MFCs using pure cultures I-P and M-P as inoculums than those using I-A and M-B, respectively. By comparing MFCs using co-cultures with those using pure cultures (M-P&B versus M-B and M-P, I-P&A versus I-A and I-P), the maximum power density of MFCs using co-cultures increased 82.0%, 15.1%, 94.6% and -24.6% (minus meant decreased), but decolorization rate decreased 33.3%, 29.4%, 7.9% and 5.0%, respectively. The results indicated specific interaction could enhance the performance of MFCs and might benefit the development of bio-process controlling.
为了研究微生物燃料电池（MFC）中主要微生物的功能和相互作用，以实现同时发电和刚果红脱色，从阳极生物膜中分离出 4 株菌，并鉴定为假单胞菌（M-P 和 I-P）、芽孢杆菌（M-B）和 Aquamicrobium（I-A）。与分别使用 I-A 和 M-B 作为接种物的 MFC 相比，使用纯培养物 I-P 和 M-P 作为接种物的 MFC 实现了更高的最大功率密度（分别提高了 158.2%和 58.1%），但刚果红脱色率（分别降低了 3.2%和 5.9%）较低。通过比较使用共培养物的 MFC 和使用纯培养物的 MFC（M-P&B 与 M-B 和 M-P，I-P&A 与 I-A 和 I-P），使用共培养物的 MFC 的最大功率密度分别增加了 82.0%、15.1%、94.6%和-24.6%（负数表示降低），但脱色率分别降低了 33.3%、29.4%、7.9%和 5.0%。结果表明，特定的相互作用可以提高 MFC 的性能，并可能有利于生物过程控制的发展。
