Avenues to the financial viability of microbial electrolysis cells [MEC] for domestic wastewater treatment and hydrogen production

Aiken, Daniel C.; Curtis, Thomas P.; Heidrich, Elizabeth S.

doi:10.1016/j.ijhydene.2018.12.029

Cited by 90 publications

(52 citation statements)

References 26 publications

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“…Among the 5 grades of graphite tested, G1, G2, and G3 are the least expensive and are in the same range of price when G4 and G5 are significantly more expensive (up to twice as expensive for G5). Considering that anode materials account for 75% of an upscaled MEC total material cost (Aiken et al, 2019), using a lowend graphite such as G1, G2, or G3 with a price twice as low as G5 would decrease up-scaled MECs investment costs by almost 40%. A case study about investment costs for the implementation of MECs in domestic wastewater treatment plants by Escapa et al (2012) proposes a scenario in which a 108,300 m² bioanode produces a current density of 2.5 A/m², which is the same order of magnitude of the average current densities produced by the G3 bioanodes.…”

Section: Graphite Selection Considering Cost Of Investment and Mechanmentioning

confidence: 99%

“…This first involves reducing the construction costs of MECs as much as possible without affecting their performance. Aiken et al (2019) recently established that anodic materials represent up to 75% of the total material cost of a MEC at an industrial scale. In this context, the anode material must be carefully chosen to minimize its impact on investment costs and ensure its durability to guarantee a sustainable investment for the exploitation of the technology in the long term.…”

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confidence: 99%

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Benchmarking of Industrial Synthetic Graphite Grades, Carbon Felt, and Carbon Cloth as Cost-Efficient Bioanode Materials for Domestic Wastewater Fed Microbial Electrolysis Cells

Roubaud

Lacroix²,

Silva³

et al. 2019

Front. Energy Res.

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Section: Graphite Selection Considering Cost Of Investment and Mechanmentioning

confidence: 99%

mentioning

confidence: 99%

Benchmarking of Industrial Synthetic Graphite Grades, Carbon Felt, and Carbon Cloth as Cost-Efficient Bioanode Materials for Domestic Wastewater Fed Microbial Electrolysis Cells

Roubaud

Lacroix²,

Silva³

et al. 2019

Front. Energy Res.

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“…For calculation of energy potential from wastewater by MFC is based on the real time experimental results which is 3.7 W/m 3 (Gude, 2016). Finally calculation of hydrogen by MEC from wastewater is calculated based on the practical assumption which is (15L-H 2 /m 3 -influent/day) (Aiken et al, 2019) and energetic estimation has been done considering 1 kg of H 2 is equivalent to 33.33 kWh energy ( H 2 data).…”

Section: Calculation Of Energy Potential From Wastewatermentioning

confidence: 99%

“…Few common technologies like AD, MHP already implemented and producing energy form the wastewater treatment plant (WWTP) in the some part of the world particularly in the developed countries (Strazzabosco et al, 2020), (Bousquet et al, 2017). Few other emerging technologies like photocatalysis, photo fermentation Microbial photo electrochemical system( MPEC) and MEC/MFC) are promising technologies and extensive research is in place presently but technology readiness level(TRL) still within 1-7 (Lin et al, 2018), (Demir et al, 2019), (Jafary et al, 2019), (Aiken et al, 2019).Out of these technologies MFC and MEC are most emerging technology as energy generation and simultaneous wastewater treatment is possible. (Cusick et al, 2011), (Tartakovsky et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

An Assessment of Wastewater Inventory and its Energy Potential: Bangladesh Perspective

Islam¹

2020

Preprint

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Background: Everyday considerable amount of wastewater is produced by each one of us. Developed country produce more wastewater than developing country. But disposing this wastewater into the environment is an expensive task and need heavy initial investment for that reason developing country only focus on water supply not on wastewater treatment considering it’s a burden and threatening the human health environment and climate change. Research shows that wastewater contain considerable amount kinetic and biochemical energy. But tapping energy from wastewater, proper inventory of national wastewater including type and characteristics of both industrial and municipal wastewater is essential which is presently absent in Bangladesh. In this paper, efforts have been taken firstly to estimate yearly total domestic as well as industrial wastewater production in Bangladesh based on reliable secondary data and monthly per capita income. Secondly, common, and emerging energy recovery technologies ideal for tapping energy from wastewater have been reviewed systematically and identified which are anaerobic digestion (AD) micro hydro powerplant (MHP), microbial electrolysis cell (MEC) and microbial fuel cell (MFC). Finally, energy potential has been estimated basing on previous research outputs and with empirical formula. At the end barrier and overcoming strategy with important recommendation has been proposed for researchers and decision makers.Results: Estimated yearly domestic and industrial wastewater is 4.874 billion and 0.452 billion tons respectively. For energy estimation,10%-50% total wastewater has been considered. Calculation shows that, 10% wastewater can produce 2.41, 1829.09 and 1.97 GW energy yearly through AD, MHP, MEC and MFC technologies, respectively whereas 50% total wastewater can generate 9145.94 GW energy yearly by MHP only.Conclusion: Estimated quantity of produced wastewater and energy potentials from wastewater is based on secondary data. For more reliable estimation feasibility study may be conducted by the researchers supported by stakeholders. Both wastewater producers and treatment plant owners should have noble desire backed by governmental organizations will facilitate the process. Outcomes are very significant and optimistic and it is expected that this findings not only inspired researcher, wastewater operators and policy makers of Bangladesh but also other developing countries around the globe.

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“…Such areas can take the form of corrosive cracks ( Figure 1A) or originate in a failure of the anti-corrosive coating ( Figure 1B). This leads to the hydrogenation of the alloy [26][27][28][29][30][31][32][33][34][35][36][37][38]. Hydrogen permeation from solutions is due to the reduction of hydrogen derived from the solution during the cathodic process [20,26,27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrogen and Absence of Passive Layer on Corrosive Properties of Aluminum Alloys

Włodarczyk

2020

Materials

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This paper reports the results of research on the effect of hydrogen permeation and the absence of passive layers on the variations in the corrosive properties of aluminum alloys. The study demonstrated that such variations contribute to the deterioration of corrosive properties, which in turn contributes to shortening the reliability time associated with the operation of aluminum alloy structures. The analysis involved structural aluminum alloys: EN AW-1050A, EN AW-5754, and EN AW-6060. It was demonstrated that the absorption of hydrogen by the analyzed alloys led to the shift of the electrode potential to the negative side. The built hydrogen corrosion cells demonstrate in each case the formation of electromotive force (EMF) cells. The initial EMF value of the cell and its duration depends on the duration of hydrogenation. As a result of removing the passive layers, the electrode potential also changes to the negative side. Following the removal of the passive layer from one of the electrodes, the cells also generated a galvanic (metal) cell. The duration of such a cell is equivalent to the time of restoration of the passive layer. The formation of such hydrogen and metal galvanic cells changes the electrochemical properties of aluminum alloys, therefore deteriorates the corrosive properties of aluminum alloys.

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Avenues to the financial viability of microbial electrolysis cells [MEC] for domestic wastewater treatment and hydrogen production

Cited by 90 publications

References 26 publications

Benchmarking of Industrial Synthetic Graphite Grades, Carbon Felt, and Carbon Cloth as Cost-Efficient Bioanode Materials for Domestic Wastewater Fed Microbial Electrolysis Cells

Benchmarking of Industrial Synthetic Graphite Grades, Carbon Felt, and Carbon Cloth as Cost-Efficient Bioanode Materials for Domestic Wastewater Fed Microbial Electrolysis Cells

An Assessment of Wastewater Inventory and its Energy Potential: Bangladesh Perspective

Effect of Hydrogen and Absence of Passive Layer on Corrosive Properties of Aluminum Alloys

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