Removal and recovery of phosphorus as struvite from swine wastewater using microbial fuel cell

Ichihashi, Osamu; Hirooka, Kayako

doi:10.1016/j.biortech.2012.02.124

Cited by 245 publications

(84 citation statements)

References 21 publications

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“…An air-cathode single-chamber MFC was used to recover phosphorus in the form of struvite crystal, which precipitated on the surface of the cathode electrode; however, the recovery rate of phosphorus was only 27%, accounting for a small portion of total phosphorus removal (70%-82%) [33]. Ammonia removal was examined in both single-and two-chambered MFCs, and the results suggested that nitrogen losses in the air-cathode system were mainly caused by ammonia volatilization due to elevated pH near the cathode, while nitrogen losses in the two-chambered MFC were primarily due to ammonium ion diffusion through the CEM [34].…”

Section: Animal Wastementioning

confidence: 99%

Development of Bioelectrochemical Systems to Promote Sustainable Agriculture

Abu-Reesh

2015

Agriculture

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Bioelectrochemical systems (BES) are a newly emerged technology for energy-efficient water and wastewater treatment. Much effort as well as significant progress has been made in advancing this technology towards practical applications treating various types of waste. However, BES application for agriculture has not been well explored. Herein, studies of BES related to agriculture are reviewed and the potential applications of BES for promoting sustainable agriculture are discussed. BES may be applied to treat the waste/wastewater from agricultural production, minimizing contaminants, producing bioenergy, and recovering useful nutrients. BES can also be used to supply irrigation water via desalinating brackish water or producing reclaimed water from wastewater. The energy generated in BES can be used as a power source for wireless sensors monitoring the key parameters for agricultural activities. The importance of BES to sustainable agriculture should be recognized, and future development of this technology should identify proper application niches with technological advancement.

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Section: Animal Wastementioning

confidence: 99%

Development of Bioelectrochemical Systems to Promote Sustainable Agriculture

Abu-Reesh

2015

Agriculture

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“…Production of ammonia gas at the cathode from dissolved ammonium in anode solution, 25 as well as production of struvite via precipitation of the phosphorus has been shown. 26,27 The ability to transfer electrons in the reverse direction, i.e., from the cathode to microbes has also been reported, leading to the potential for bioelectrosynthesis of fuels and chemicals using biocathodes. 28 Several environmental applications have also been studied including clean-up of produced water 29 and bioremediation of pollutants.…”

Section: Applications and Future Directionsmentioning

confidence: 99%

Microbial Fuel Cells and Microbial Electrolyzers

Borole

2015

Interface magazine

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Microbial fuel cells are electrochemical devices that use microbes as catalysts instead of inorganic catalysts to drive the anodic and/or cathodic reactions to produce electricity. 1 The field of microbial fuel cells (MFCs) was initially focused on wastewater treatment, but has evolved into a much more diverse field of research called Bioelectrochemical Systems (BES). Microbial electrolyzers or microbial electrolysis cells (MECs) are a different manifestation of BES that generate hydrogen using less than half the voltage or electrical energy needed for conventional water electrolysis. The reduced electrical input is enabled by the chemical energy that comes from organic or reduced inorganic substrates that serve as the feedstock for hydrogen production in MECs. Electrons are extracted from the substrates and converted into hydrogen at the cathode, operating at room temperature. The cathode catalysts can be metal-based or biological in nature. Figure 1 shows a generalized configuration of the BES. The versatility of the BES platform shown in the figure illustrates the potential of this approach to produce not only electricity and hydrogen but also biofuels, chemicals and bioproducts. Electrocatalysis-Biocatalysis SynergyFuel cells have set a high mark for energy efficiency among the various renewable energy production options that have evolved over the last few years. The high efficiency comes from the molecular nature of electrocatalysis. In comparison to thermocatalysis, where vibrational energy is used to increase the rate of reaction, electrocatalysis has a significant advantage, because voltage is the driving force for reactions in addition to temperature, which minimizes the energy losses to the environment, thereby improving the conversion efficiency. Biocatalysis is another low temperature catalytic process that works at the molecular level by overcoming the energy of activation via structural re-combination of reactants that self-assemble into catalytic sites. Combining electrocatalysis with biocatalysis in the bioelectrochemical approach employed in BES results in a significant synergy, improving efficiency significantly. This is because of the continuity of the electron flow from the substrate to the product, afforded first, via the biocatalytic reaction, and then by the electrocatalytic reaction, resulting in a continuous path within the electrical circuit. This mechanism is supported by the relatively recent discovery of electrical communication between biological systems and electrodes. Biological nanowires have been identified to enable efficient electron conductance between inorganic substrates and organic or biological entities. Pili-based nanowires have been identified in Geobacter sulfurreducens and Shewanella oneidensis, which are capable of electron transfer from microbes to an anode. 2,3Direct interfacing of electron producers and electron sinks has given rise to this high degree of efficiency evidenced in microbial fuel cells. Similarly, MECs also have high efficiency, shown by the generati...

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“…Practically, struvite can be recovered from municipal landfill leachate [8], poultry manure wastewater [9], or urine [10]. Struvite also can be produced using microbial fuel cells [11]. Recently, struvite has been produce from fertilizer wastewater [12].…”

Section: Introductionmentioning

confidence: 99%

Ammonium Nitrogen Removal from Urea Fertilizer Plant Wastewater via Struvite Crystal Production

Machdar

Depari

Ulfa

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Elimination of ammonium concentration from urea fertilizer plant wastewater through struvite crystal (NH 4 MgPO 4 .6H 2 O) formation by adding MgCl 2 , KH 2 PO 4 , and KOH were studied. This method of elimination has two benefits, namely, reducing ammonium nitrogen content in the wastewater, as well as production of a valuable material (struvite crystal). Struvite is known as a slow-release fertilizer and less soluble. This report presents the ammonium removal efficiencies during struvite formation. The growth of struvite production under different molar ratios of Mg 3-of 1.2:1:1, 1:1:1.2, and 1:1:1 were evaluated. Each of the molar ratios was treated at the solution pH of 8, 9, and 10. It was found that, the highest ammonium removal efficiency was 94.7% at the molar ratio of 1.2:1:1 and pH of 9. Primarily, the growth rate of struvite formation complied with a first-order kinetic model. The rate constants (k 1 ) were calculated to be 2.6, 4.3, and 5.0 h -1 for solution pH of 8, 9, and 10, respectively. The findings of the study provide suggestion for an alternative sustainable recovery of ammonium nitrogen content in a urea fertilizer plant effluent.

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Removal and recovery of phosphorus as struvite from swine wastewater using microbial fuel cell

Cited by 245 publications

References 21 publications

Development of Bioelectrochemical Systems to Promote Sustainable Agriculture

Development of Bioelectrochemical Systems to Promote Sustainable Agriculture

Microbial Fuel Cells and Microbial Electrolyzers

Ammonium Nitrogen Removal from Urea Fertilizer Plant Wastewater via Struvite Crystal Production

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