Long-term performance and acute toxicity assessment of scaled-up air–cathode microbial fuel cell fed by dairy wastewater

Marassi, Rodrigo José; Queiroz, Lucas Gonçalves; Silva, Daniel C. V. R.; Santos, Fabiana Soares dos; Silva, Gilmar C.; Paiva, Teresa Cristina Brazil de

doi:10.1007/s00449-020-02348-y

Cited by 20 publications

(9 citation statements)

References 43 publications

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“…The scaled-up MFC showed an extraordinarily high performance with COD, BOD, nitrate, organic nitrogen, sulfate, and organic phosphorus removal efficiency of 93% 95%, 100%, 57%, 90%, and 90%, respectively. Furthermore, a maximum power density of 0.48 W/m 3 was obtained [57]. Thus, wastewater rich in organic matter can efficiently be employed in MFCs for the generation of bioelectricity with simultaneous removal of contaminants.…”

Section: Mfcsmentioning

confidence: 96%

“…Moreover, MFC technology has improved drastically in terms of wastewater treatment efficiency and power generation over the last few years. MFCs have demonstrated remarkable pollutant removal performance, with a COD removal efficiency of >90% [57]. Many pieces of literature have reported the treatment of different industrial wastewater with the help of MFCs.…”

Section: Mfcsmentioning

confidence: 99%

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A comprehensive review on emerging trends in industrial wastewater research

et al. 2022

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Rapid industrialization is one of the intricate factors that is linked to the depletion of water resources and increased generation of wastewater. Due to various obstructions and impediments, such as ineffective treatment solutions, exorbitant prices, lack of basic amenities, insufficient financial assistance, and technical expertise, sustainable treatment of industrial effluents has become an onerous process in most parts of the world. The majority of current treatment solutions are conventional and outdated, and thus fall short to remove all the contaminants efficiently from the industrial wastewater. Moreover, poorly treated or untreated industrial effluents are indiscriminately dumped into water bodies such as lakes, ponds, and rivers, causing substantial health hazards to humans and animals and serious threats to the aquatic ecosystem. Thus, there is a need for highly efficient, cost-effective, and sustainable technologies for the treatment of industrial wastewater. Employment of microbial technologies such as microbial fuel cells and microalgal technologies, treatment of wastewater can be coupled with the production of bioelectricity and valuable biomass, respectively. Moreover, with nanofiltration and biochar technologies, the efficiency of the overall treatment procedure can be increased to a greater extent. The present review aims to highlight opportunities and challenges associated with some of the emerging trends in industrial wastewater research.

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Section: Mfcsmentioning

confidence: 96%

Section: Mfcsmentioning

confidence: 99%

A comprehensive review on emerging trends in industrial wastewater research

et al. 2022

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“…Notably, Ye et al (2019b) tested three types of membranes (CEM, forward osmosis membrane, and nonwoven membrane) and found that MFC with CEM had the best P removal effectiveness (95%). However, the use of membranes could trigger problems, such as membrane fouling and high internal resistance of the reactor, which could lower energy efficiency and increase the cost (Blatter et al, 2020;Cusick et al, 2014;Happe et al, 2016;Kumar et al, 2019;Marassi et al, 2020).…”

Section: Impact Of Cell Configuration 231 Exploration Of Bioanodementioning

confidence: 99%

“…Furthermore, Marassi et al (2020) investigated the continuous flow treatment of dairy wastewater in a 2.8 L air-cathode MFC. The MFC cell realized 90% removal of organic P. During the long-term operation period (105 days), the ortho-phosphate concentration increased initially in the effluent, indicating the transformation of organic P into ortho-phosphate which is likely due to microbial degradation (Nancharaiah et al, 2016).…”

Section: Non-ortho Phosphorusmentioning

confidence: 99%

“…Consequently, alternative electrode materials or better utilization of PGM coated electrodes should be investigated before scaling up. Furthermore, the use of membranes in electrochemical systems is also a concern because of its monetary cost and maintenance since problems (i.e., fouling and scaling) frequently occur when treating actual wastewater (Barua et al, 2019;Bhambri and Karn, 2020;Kumar et al, 2019;Marassi et al, 2020).…”

Section: Tablementioning

confidence: 99%

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Electrochemically mediated precipitation of phosphate minerals for phosphorus removal and recovery: Progress and perspective

Wang

Kuntke

Saakes³

et al. 2022

Water Research

128

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Phosphorus (P) is an essential element for the growth and reproduction of organisms. Unfortunately, the natural P cycle has been broken by the overexploitation of P ores and the associated discharge of P into water bodies, which may trigger the eutrophication of water bodies in the short term and possible P shortage soon. Consequently, technologies emerged to recover P from wastewater to mitigate pollution and exploit secondary P resources. Electrochemically induced phosphate precipitation has the merit of achieving P recovery without dosing additional chemicals via creating a localized high pH environment near the cathode. We critically reviewed the development of electrochemically induced precipitation systems toward P removal and recovery over the past ten years. We summarized and discussed the effects of pH, current density, electrode configuration, and water matrix on the performance of electrochemical systems. Next to ortho P, we identified the potential and illustrated the mechanism of electrochemical P removal and recovery from non-ortho P compounds by combined anodic or anode-mediated oxidation and cathodic reduction (precipitation). Furthermore, we assessed the economic feasibility of electrochemical methods and concluded that they are more suitable for treating acidic P-rich waste streams. Despite promising potentials and significant progress in recent years, the application of electrochemical systems toward P recovery at a larger scale requires further research and development. Future work should focus on evaluating the system's performance under long-term operation, developing an automatic process for harvesting P deposits, and performing a detailed economic and life-cycle assessment.

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