Recovering platinum from wastewater by charring biofilm of microbial fuel cells (MFCs)

Liu, Yiyang; Song, Pengfei; Gai, Ruizhe; Yan, Chenxu; Jiang, Yang; Yin, Di; Cai, Lankun; Zhang, Lehua

doi:10.1016/j.jscs.2018.08.003

Cited by 30 publications

(5 citation statements)

References 36 publications

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“…This direction might be useful for the researcher if they employ high conductive and high surface area-based materials like graphene oxide, reduced graphene oxide or nanocomposites that showed excellent performance for the removal efficiency. Liu et al [57] used graphite felt as electrodes to treat wastewater containing Ni, Cu, and Hg. The study showed the concentration parameter to explore the concentration and energy output relation.…”

Section: Degradation Of Toxic Metal Through Mfcsmentioning

confidence: 99%

Outlook on the Role of Microbial Fuel Cells in Remediation of Environmental Pollutants with Electricity Generation

et al. 2020

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A wide variety of pollutants are discharged into water bodies like lakes, rivers, canal, etc. due to the growing world population, industrial development, depletion of water resources, improper disposal of agricultural and native wastes. Water pollution is becoming a severe problem for the whole world from small villages to big cities. The toxic metals and organic dyes pollutants are considered as significant contaminants that cause severe hazards to human beings and aquatic life. The microbial fuel cell (MFC) is the most promising, eco-friendly, and emerging technique. In this technique, microorganisms play an important role in bioremediation of water pollutants simultaneously generating an electric current. In this review, a new approach based on microbial fuel cells for bioremediation of organic dyes and toxic metals has been summarized. This technique offers an alternative with great potential in the field of wastewater treatment. Finally, their applications are discussed to explore the research gaps for future research direction. From a literature survey of more than 170 recent papers, it is evident that MFCs have demonstrated outstanding removal capabilities for various pollutants.

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Section: Degradation Of Toxic Metal Through Mfcsmentioning

confidence: 99%

Outlook on the Role of Microbial Fuel Cells in Remediation of Environmental Pollutants with Electricity Generation

et al. 2020

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“…The Zn and Ni contents on the sludge surface decreased due to their formation of metal oxides (Sheng et al 2011). In summary, the obtained XPS results would provide evidences in proving the reduction and removal of metal ions on the cathode by gaining the electronics (Liu et al 2019).…”

Section: Chemical Form Transformation Of Zn and Nimentioning

confidence: 72%

Simultaneous removal of heavy metals and bioelectricity generation in microbial fuel cell coupled with constructed wetland: an optimization study on substrate and plant types

Wang

Zhang

et al. 2021

Environ Sci Pollut Res

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A microbial fuel cell coupled with constructed wetland (CW-MFC) was built to remove heavy metals (Zn and Ni) from sludge. The performance for the effects of substrates (granular activated carbon (GAC), ceramsite) and plants (Iris pseudacorus, Water hyacinth) towards the heavy metal treatment as well as electricity generation were systematically investigated. The CW-MFC systems possessed higher Zn and Ni removal e ciencies as compared to CW. The maximal removal rates of Zn (76.88%) and Ni (66.02%) were obtained in system CW-MFC based on GAC and Water hyacinth (GAC-and WH-CW-MFC). Correspondingly, the system produced the maximum voltage of 534.30 mV and power density of 70.86 mW•m -3 , respectively. Plant roots and electrodes contributed supremely to the removal of heavy metals, especially for GAC-and WH-CW-MFC systems. The coincident enrichment rates of Zn and Ni reached 21.10% and 26.04% for plant roots, 14.48% and 16.50% for electrodes, respectively. A majority of the heavy metals on the sludge surface were con rmed as Zn and Ni. Furthermore, the high-valence Zn and Ni were effectively reduced to low-valence or elemental metals. This study provides a theoretical guidance for the optimal construction of CW-MFC and the resource utilization of sludge containing heavy metals. Highlights a. Six lab-scaled CW-MFCs were constructed to remove Zn and Ni from sludge. b. GAC and Water hyacinth boosted the heavy metal removal and bioelectricity generation. c. High-valence Zn and Ni were effectively reduced to low-valence or elemental metals.d. The ndings may be extended to the treatment of refractory heavy metals from excess sludge.

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“…Nitrate loading and COD affect the removal of nitrates. The nitrate loading and COD concentration are increased ( Liu et al, 2019 ).…”

Section: Mitigation Of Pollutantsmentioning

confidence: 99%

Harnessing fungal bio-electricity: a promising path to a cleaner environment

Umar,

Mubeen,

Ali

et al. 2024

Front. Microbiol.

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Integrating fungi into fuel cell systems presents a promising opportunity to address environmental pollution while simultaneously generating energy. This review explores the innovative concept of constructing wetlands as fuel cells for pollutant degradation, offering a practical and eco-friendly solution to pollution challenges. Fungi possess unique capabilities in producing power, fuel, and electricity through metabolic processes, drawing significant interest for applications in remediation and degradation. Limited data exist on fungi’s ability to generate electricity during catalytic reactions involving various enzymes, especially while remediating pollutants. Certain species, such as Trametes versicolor, Ganoderma lucidum, Galactomyces reessii, Aspergillus spp., Kluyveromyce smarxianus, and Hansenula anomala, have been reported to generate electricity at 1200 mW/m3, 207 mW/m2, 1,163 mW/m3, 438 mW/m3, 850,000 mW/m3, and 2,900 mW/m3, respectively. Despite the eco-friendly potential compared to conventional methods, fungi’s role remains largely unexplored. This review delves into fungi’s exceptional potential as fuel cell catalysts, serving as anodic or cathodic agents to mitigate land, air, and water pollutants while simultaneously producing fuel and power. Applications cover a wide range of tasks, and the innovative concept of wetlands designed as fuel cells for pollutant degradation is discussed. Cost-effectiveness may vary depending on specific contexts and applications. Fungal fuel cells (FFCs) offer a versatile and innovative solution to global challenges, addressing the increasing demand for alternative bioenergy production amid population growth and expanding industrial activities. The mechanistic approach of fungal enzymes via microbial combinations and electrochemical fungal systems facilitates the oxidation of organic substrates, oxygen reduction, and ion exchange membrane orchestration of essential reactions. Fungal laccase plays a crucial role in pollutant removal and monitoring environmental contaminants. Fungal consortiums show remarkable potential in fine-tuning FFC performance, impacting both power generation and pollutant degradation. Beyond energy generation, fungal cells effectively remove pollutants. Overall, FFCs present a promising avenue to address energy needs and mitigate pollutants simultaneously.

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Recovering platinum from wastewater by charring biofilm of microbial fuel cells (MFCs)

Cited by 30 publications

References 36 publications

Outlook on the Role of Microbial Fuel Cells in Remediation of Environmental Pollutants with Electricity Generation

Outlook on the Role of Microbial Fuel Cells in Remediation of Environmental Pollutants with Electricity Generation

Simultaneous removal of heavy metals and bioelectricity generation in microbial fuel cell coupled with constructed wetland: an optimization study on substrate and plant types

Harnessing fungal bio-electricity: a promising path to a cleaner environment

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