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年度	113	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	國立臺灣大學	申請系所	森林環境暨資源學系
專案主持人	官崇煜	職等/職稱	副教授
專案中文名稱	植物微生物燃料電池系統結合生物炭技術進行綠色永續韌性整治砷污染土壤
中文關鍵字	淨零排放, 光合作用, 重金屬, 氧化還原反應
專案英文名稱	Plant microbial fuel cell system combined with biochar technology for green, sustainable and resilient remediation of arsenic contaminated soil
英文關鍵字	Net zero emission, Photosynthesis, Heavy metal, Redox reaction,
執行金額	680,000元
執行期間	2024/12/1 至 2025/11/30
計畫中文摘要	全球暖化及環境污染為當今之重要議題。植物微生物燃料電池 (Plant Micronial Fuel Cells, PMFCs)之優勢為植物可增加碳匯，並將光能轉換為電能，進而產生綠色電力，同時進行砷污染土壤之整治。本研究以單葉鹹草 (Cyperus malaccensis Lam. ssp. monophyllus (Vahl) T. Koyama)為植物，於溫室內透過測定輸出電壓、X射線光電子能譜儀 (X-ray Photoelectron Spectrometer, XPS)及植物組織砷濃度等性質，確認產電與污染整治效果。添加生物炭之閉路電壓植物微生物燃料電池系統之最高輸出電壓為566±13.21 mV。顯示生物炭的添加提高輸出電壓。XPS結果顯示，添加生物炭之組別，其陽極在五價砷鍵結能區之訊號強度高於陰極，此現象與生物炭的吸附作用有關。添加生物炭組別之植物根部砷濃度為4.34 ppm，未添加生物炭組別之植物根部砷濃度為1.46 ppm。添加生物炭可提升植生復育之作用。植物微生物燃料電池系統結合生物炭技術，可於提升整治砷污染土壤的成效同時有效產生綠色電力。此外，植物進行光合作用可增加碳匯。綜上所述，此研究證實了植物微生物燃料電池系統具有改善全球暖化、能源短缺與土壤重金屬污染之潛力。結合生物炭技術，此系統可透過綠色、永續之方式進行韌性整治砷污染土壤。
計畫英文摘要	Global warming and environmental pollution are among the most urgent challenges facing society today, calling for sustainable, multifunctional technologies that address energy shortage, carbon management, and soil contamination simultaneously. Plant microbial fuel cells (PMFCs) represent a promising bioelectrochemical approach that harnesses living plants and rhizospheric microbes to convert photosynthetically fixed carbon into green electricity while increasing carbon sink and facilitating in situ remediation of heavy metal-contaminated soils. In this greenhouse study, Cyperus malaccensis Lam. ssp. monophyllus (Vahl) T. Koyama was selected as the system plant to evaluate both electricity generation and arsenic remediation performance. System characterization included continuous monitoring of output voltage, X-ray photoelectron spectroscopy (XPS) analysis of electrode surfaces, and quantification of arsenic concentrations in plant tissues. The close circuit output voltage of the PMFC systems amended with biochar reached a maximum of 566 ± 13.21 mV, demonstrating that biochar addition substantially improved electrochemical performance relative to the non-amended control, likely by enhancing microbial colonization, electron transfer pathways, and soil electrical conductivity. XPS spectra revealed that in the biochar-amended treatment, the anode exhibited stronger signal intensity in the As (V) binding energy region compared with the cathode, indicating that biochar contributed to arsenic adsorption and promoted redox transformations that favored immobilization or specific valence states at the anode interface. Plant tissue analysis showed root arsenic concentration of 4.34 ppm in the biochar-amended group versus 1.46 ppm in the non-amended group, suggesting that biochar enhanced phytostabilization or phytoaccumulation processes through improved root–microbe interactions and increased arsenic bioavailability in the rhizosphere. Integrating biochar with PMFC technology therefore augmented both green electricity production and arsenic remediation efficacy while concurrently supporting carbon fixation via plant photosynthesis. Taken together, these results demonstrate that PMFC systems combined with biochar offer a resilient and sustainable strategy for addressing global warming, energy shortages, and heavy metal pollution by simultaneously generating renewable bioelectricity, increasing carbon sinks, and improving the efficiency of arsenic-contaminated soil remediation. Specifically, the biochar used in this experiment possessed a high specific surface area and that promoted adsorption of oxyanionic arsenic species and provided a conductive matrix for electroactive microbes, thereby enhancing extracellular electron transfer and stabilizing redox gradients within the rhizosphere. Overall, this study confirms that PMFC systems, especially when integrated with biochar, provide a highly promising, sustainable, and resilient technology capable of simultaneously generating green electricity, improving carbon capture, and remediating arsenic-contaminated soils, offering valuable insights for future large-scale applications and contributing to the mitigation of global environmental challenges.