Resource recovery microbial fuel cells for urine-containing wastewater treatment without external energy consumption

Lu, Sidan; Li, Hongna; Tan, Guangcai; Wen, Fang; Flynn, Michael; Zhu, Xiuping

doi:10.1016/j.cej.2019.05.130

Cited by 83 publications

(28 citation statements)

References 51 publications

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“…For other hybrid MNRC systems, this co-recovery of SO 4 2− observed is ~ 44% for AC:Chi (2:1) and ~ 40.2% for AC:Chi (3:1), respectively, after 10 days. According to the literature, sulfur in the form of SO 4 2− ions may be immediately used by the bacterium at the anode [ 34 ]. The re-oxidation of sulfur happens on the cathode side, resulting in an increase in sulfur concentration in this chamber and the migration of SO 4 2− ions through AEM from the cathode to the recovery chamber, migrating towards the recovery compartment and concentrating in the recovery solution.…”

Section: Resultsmentioning

confidence: 99%

Enhanced bioenergy and nutrients recovery from wastewater using hybrid anodes in microbial nutrient recovery system

Shahid

Ramasamy

Kaur

et al. 2022

Biotechnol Biofuels

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Background The combined microbial fuel cell–microbial nutrient recovery system has lately been thoroughly explored from an engineering standpoint. The relevance of microbial communities in this process, on the other hand, has been widely underestimated. Results A lab-scale microbial nutrients recovery system was created in this work, and the microbial community structure was further defined, to give a thorough insight into the important microbial groups in the present system. We reported for the first-time different hybrid anodes of activated carbon and chitosan that were used in the microbial nutrient recovery system for bioenergy production, and, for the removal of COD and recovery of nutrients present in the wastewater. The hybrid anodic materials were studied to adapt electrochemically active bacteria for the recovery of nutrients and energy generation from wastewater without the need for an external source of electricity. The potential of the created hybrid anodes in terms of nutrients recovery, chemical oxygen demand elimination, and energy generation from municipal wastewater was thoroughly examined and compared with each other under similar operating conditions. When the COD loading was 718 mg/L, a total COD removal of ~ 79.2% was achieved with a hybrid activated carbon and chitosan anode having an equal ratio after 10 days of the operation cycle. The maximum power density estimated for hybrid anode (~ 870 mWm−2) was found. Conclusion Overall, this work reveals a schematic self-driven way for the collection and enrichment of nutrients (~ 72.9% phosphorus recovery and ~ 73% ammonium recovery) from municipal wastewater, as well as consistent voltage production throughout the operation.

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Section: Resultsmentioning

confidence: 99%

Enhanced bioenergy and nutrients recovery from wastewater using hybrid anodes in microbial nutrient recovery system

Shahid

Ramasamy

Kaur

et al. 2022

Biotechnol Biofuels

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“…(2019) , Gao et al. (2018b) , Lu et al. (2019) ), microbial electrolysis cells (MEC-ED; Ledezma et al.…”

Section: Nutrient Recovery By Volume Reductionmentioning

confidence: 99%

State of the art of urine treatment technologies: A critical review.

2021

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HIGHLIGHTS The last 15 years, we have seen a tremendous development in urine treatment technologies We discuss relevant technologies for reaching eight process-engineering goals (sections 2-8) A few biological as well as physical-chemical technologies have been piloted and are moving towards industrialization There is a boost of experimental electrochemical treatment technologies, which hold promise for on-site installations

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“…The second part of this research involves the extraction of potassium from remediated nanofiltration concentrations using electromigration and subsequently potassium retrieval by a [112]. To conserve energy, the microbial fuel cell was employed to retrieve nutrients from urine-containing wastewater [113,114]. As with late studies, hydrolysis of urea occurred through a bioelectrochemical method, and ions migrating due to a self-created electrical field.…”

Section: Nitrogenmentioning

confidence: 99%

“…The results showed that potassium can be recovered from nanofiltration concentrates in the form of MgKPO 4 ∙ 6H 2 O precipitate in the cation-exchange membrane electrolysis system [ 112 ]. To conserve energy, the microbial fuel cell was employed to retrieve nutrients from urine-containing wastewater [ 113 , 114 ]. As with late studies, hydrolysis of urea occurred through a bio-electrochemical method, and ions migrating due to a self-created electrical field.…”

Section: Resources From Industrial Wastewatermentioning

confidence: 99%

Recovery of resources from industrial wastewater employing electrochemical technologies: status, advancements and perspectives

et al. 2021

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In the last two decades, water use has increased at twice the rate of population growth. The freshwater resources are getting polluted by contaminants like heavy metals, pesticides, hydrocarbons, organic waste, pathogens, fertilizers, and emerging pollutants. Globally more than 80% of the wastewater is released into the environment without proper treatment. Rapid industrialization has a dramatic effect on developing countries leading to significant losses to economic and health well-being in terms of toxicological impacts on humans and the environment through air, water, and soil pollution. This article provides an overview of physical, chemical, and biological processes to remove wastewater contaminants. A physical and/or chemical technique alone appears ineffective for recovering useful resources from wastewater containing complex components. There is a requirement for more processes or processes combined with membrane and biological processes to enhance operational efficiency and quality. More processes or those that are combined with biological and membrane-based processes are required to enhance operational efficiencies and quality. This paper intends to provide an exhaustive review of electrochemical technologies including microbial electrochemical technologies. It provides comprehensive information for the recovery of metals, nutrients, sulfur, hydrogen, and heat from industrial effluents. This article aims to give detailed information into the advancements in electrochemical processes to energy use, improve restoration performance, and achieve commercialization. It also covers bottlenecks and perspectives of this research area.

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Resource recovery microbial fuel cells for urine-containing wastewater treatment without external energy consumption

Cited by 83 publications

References 51 publications

Enhanced bioenergy and nutrients recovery from wastewater using hybrid anodes in microbial nutrient recovery system

Enhanced bioenergy and nutrients recovery from wastewater using hybrid anodes in microbial nutrient recovery system

State of the art of urine treatment technologies: A critical review.

Recovery of resources from industrial wastewater employing electrochemical technologies: status, advancements and perspectives

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