Demonstration of energy and nutrient recovery from urine by field-scale microbial fuel cell system

Sharma, Priya; Talekar, Guruprasad V.; Mutnuri, Srikanth

doi:10.1016/j.procbio.2020.11.014

Cited by 24 publications

(1 citation statement)

References 30 publications

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“…With this configuration, the use of an FO membrane instead of a CEM has been reported to decrease BES performance [ 59 ]. An upscaled 10 L dual-chambered MFC stack (volume of each unit of 1.2 L) fed with urine for three months used the pH increase in the cathode compartment to recover phosphate and ammoniacal nitrogen as struvite in an external reactor with an efficiency of 90% and 46%, respectively [ 60 ]. Since in most P-rich effluents, such as digestate, there is not enough magnesium to induce struvite crystallisation, requiring the addition of an external source, an innovative bioelectrochemical MgO acidolysis method was developed.…”

Section: Concurrent Nitrogen and Phosphorus Recovery Using Membranes ...mentioning

confidence: 99%

Recent Advances in Bioelectrochemical Systems for Nitrogen and Phosphorus Recovery Using Membranes

2023

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Bioelectrochemical systems (BESs) have emerged as a technology that is able to recover resources from different kinds of substrates, especially wastewater. Nutrient recovery, mostly based on membrane reactor configuration, is a clear niche for BES application. The recovery of nitrogen or phosphorus allows for treatment of wastewater while simultaneously collecting a concentrated stream with nutrients that can be reintroduced into the system, becoming a circular economy solution. The aim of this study is to review recent advances in membrane-based BESs for nitrogen and phosphorus recovery and compare the recovery efficiencies and energy requirements of each system. Finally, there is a discussion of the main issues that arise from using membrane-based BESs. The results presented in this review show that it would be beneficial to intensify research on BESs to improve recovery efficiencies at the lowest construction cost in order to take the final step towards scaling up and commercialising this technology.

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Section: Concurrent Nitrogen and Phosphorus Recovery Using Membranes ...mentioning

confidence: 99%

Recent Advances in Bioelectrochemical Systems for Nitrogen and Phosphorus Recovery Using Membranes

2023

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Sulfonated carbon–based heterogeneous acid catalysts in direct biomass redox flow fuel cell: A review

Ugwu,

Akalezi,

Ike

et al. 2024

Asia-Pacific J Chem Eng

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This review focused on the potential applications of sulfonated carbon–based heterogeneous acid catalysts for the hydrolysis of lignocellulosic biomass (LCB) fuel feedstock and the development of membrane electrode assembly (MEA) for the direct biomass redox flow fuel cell (DBRFFC). LCBs are hydrolysed to yield simple sugars, which are subsequently oxidized over catalysts in the anode tank of the DBRFFC to generate electricity. Ferric chloride used as a catalyst in the DBRFFC is not efficient for glucose production from LCB, such that the power performance of the DBRFFC is affected during glucose oxidation due to low glucose yield from LCB for electron generation. Sulfonated carbon–based solid acid catalysts (SCSACs) have been established as efficient catalysts for the hydrolysis of LCB and as metal catalyst supports for the fabrication of MEA for further oxidation of glucose and its oxidation by‐products. These capabilities of SCSACs can be explored and applied to significantly improve the power output of the DBRFFC through efficient hybrid catalyst design. There is still a scarcity of literature on this subject and their combination with ferric chloride to enhance glucose yield and oxidation in DBRFFC. This gap was filled by discussing the various types of sulfonated carbon–based catalysts, highlighting their synthesis routes, and their applications in organic compound synthesis, and membrane electrode development in DBRFFC. The knowledge derived will certainly be beneficial to researchers willing to improve the performance of DBRFFC through molecular catalyst design and electrode membrane development for application in DBRFFC.

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Struvite in circular economy: Production techniques, emerging applications and market opportunities

Chandrasekaran,

Zaffar,

Balasubramanian

2024

WIREs Energy & Environment

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Struvite precipitation is an efficient approach to recover phosphorus and ammonium from wastewater to alleviate many operational as well as environmental issues. The sparingly soluble nature of struvite in water makes it a potential slow‐release fertilizer whose adequacy has been investigated in various soil‐based cultivation. However, struvite has diverse applications other than field usage which are yet to be explored. The review highlights the usage of struvite as a fertilizer in soil along with its other applications as a nutrient supplier in hydroponic systems, fire retardants, and sorbent for the adsorption of heavy metals, dye, and gases. The research gaps between the lab and the application of the struvite products in the market for its proper utilization have also been reported. Thus, struvite produced from wastewater can be a promising green chemistry that could replace many costly, synthetic, and harmful products, while conserving phosphorous resource at the same time.This article is categorized under: Climate and Environment > Circular Economy Emerging Technologies > Materials Sustainable Development > Goals

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Demonstration of energy and nutrient recovery from urine by field-scale microbial fuel cell system

Cited by 24 publications

References 30 publications

Recent Advances in Bioelectrochemical Systems for Nitrogen and Phosphorus Recovery Using Membranes

Recent Advances in Bioelectrochemical Systems for Nitrogen and Phosphorus Recovery Using Membranes

Sulfonated carbon–based heterogeneous acid catalysts in direct biomass redox flow fuel cell: A review

Struvite in circular economy: Production techniques, emerging applications and market opportunities

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