Development of the Microbial Electrolysis Desalination and Chemical-Production Cell for Desalination as Well as Acid and Alkali Productions

Chen, Shanshan; Liu, Guangli; Zhang, Renduo; Qin, Botao; Luo, Yi

doi:10.1021/es203332g

Cited by 170 publications

(67 citation statements)

References 30 publications

(49 reference statements)

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“…An additional separating chamber can also be used between anode and cathode, which uses internal potential for desalination of water. The latter is known as microbial desalination cell (MDC) and is unique since it does not require external electricity to reduce the cathode potential [50][51][52][53][54][55][56][57]. There are many other variants available, which are customized for specific purposes but share the common principle [40].…”

Section: Microbial Electro-fermentation: An Alternative Methods Of Fermentioning

confidence: 99%

Electro-Fermentation in Aid of Bioenergy and Biopolymers

et al. 2018

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Abstract:The soaring levels of industrialization and rapid progress towards urbanization across the world have elevated the demand for energy besides generating a massive amount of waste. The latter is responsible for poisoning the ecosystem in an exponential manner, owing to the hazardous and toxic chemicals released by them. In the past few decades, there has been a paradigm shift from "waste to wealth", keeping the value of high organic content available in the wastes of biological origin. The most practiced processes are that of anaerobic digestion, leading to the production of methane. However; such bioconversion has limited net energy yields. Industrial fermentation targeting value-added bioproducts such as-H 2 , butanediols; polyhydroxyalkanoates, citric acid, vitamins, enzymes, etc. from biowastes/lignocellulosic substrates have been planned to flourish in a multi-step process or as a "Biorefinery". Electro-fermentation (EF) is one such technology that has attracted much interest due to its ability to boost the microbial metabolism through extracellular electron transfer during fermentation. It has been studied on various acetogens and methanogens, where the enhancement in the biogas yield reached up to 2-fold. EF holds the potential to be used with complex organic materials, leading to the biosynthesis of value-added products at an industrial scale.

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Section: Microbial Electro-fermentation: An Alternative Methods Of Fermentioning

confidence: 99%

Electro-Fermentation in Aid of Bioenergy and Biopolymers

et al. 2018

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“…The lower membrane resistance in OsMFCs is related to both a lower pH gradient across the membrane due to the improved proton flux promoted by water flux and higher anolyte conductivity in the presence of reverse salt flux (Zhu et al, 2015). Movement of electrons as a result of bioelectrochemical reactions can affect ion transport across ion exchange membranes (Chen et al, 2012(Chen et al, , 2016Ping et al, 2016). For example, it was reported that the current generation in microbial desalination cells (MDCs) could inhibit back diffusion of ions from the anolyte into the desalinated stream (Ping et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of current generation and electrolyte pH on reverse salt flux across thin film composite membrane in osmotic microbial fuel cells

Qin

Abu-Reesh

2016

Water Research

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a b s t r a c tOsmotic microbial fuel cells (OsMFCs) take advantages of synergy between forward osmosis (FO) and microbial fuel cells (MFCs) to accomplish wastewater treatment, current generation, and high-quality water extraction. As an FO based technology, OsMFCs also encounter reverse salt flux (RSF) that is the backward transport of salt ions across the FO membrane into the treated wastewater. This RSF can reduce water flux, contaminate the treated wastewater, and increase the operational expense, and thus must be properly addressed before any possible applications. In this study, we aimed to understand the effects of current generation and electrolyte pH on RSF in an OsMFC. It was found that electricity generation could greatly inhibit RSF, which decreased from 16.3 ± 2.8 to 3.9 ± 0.7 gMH when the total Coulomb production increased from 0 to 311 C. The OsMFC exhibited 45.9 ± 28.4% lower RSF at the catholyte pH of 3 than that at pH 11 when 40 U external resistance was connected. The amount of sodium ions transported across the FO membrane was 18.3e40.7% more than that of chloride ions. Ion transport was accomplished via diffusion and electrically-driven migration, and the theoretical analysis showed that the inhibited electrically-driven migration should be responsible for the reduced RSF. These findings are potentially important to control and reduce RSF in OsMFCs or other osmotic-driven processes.

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“…[1] With the assist of cutting-edge nanotechnology, considerable efforts have been made to develop purification methods based on water desalination. [2][3][4][5][6][7][8][9] Among the various solutions envisaged to date, solar steam generation is considered as a promising technology, due to the lack of any additional chemical that might impact the environment and the fact that many areas suffering from water scarcity, such as the Middle East, Central America, and North Africa, possess an abundant amount of both seawater and sun power. [10] In solar steam generation, absorbing structures are typically introduced into water to enhance the thermal evaporation rate.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Large‐Scale Solar Steam Generation with Nanolayers of Reusable Biomimetic Nanoparticles

Liu

Huang

Hsiung

et al. 2017

Advanced Sustainable Systems

154

119

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is currently based on structures floating on water. [11,13,17,[19][20][21][22] By using graphite membranes, the highest solar thermal efficiency (see Equation (4)) of 85% has been reported under an equivalent solar intensity of 10 suns. [13] One of the main drawback of this approach, besides the large light intensity requirement, lies in the fact that carbon-based systems (both graphite and graphene) are vulnerable to the contamination of pollutants or salt in the water, thus limiting the recyclability of the membrane after prolonged use.In this article, we developed a different approach, which makes use of a flat-optics metasurface [23][24][25][26][27][28] composed of suitably engineered plasmonic nanoparticles. [29,30] Plasmonics structures, thanks to the possibility of localizing light energy at the nanoscale, have demonstrated a great potential in converting light energy into heat for a variety of photothermal applications. [31][32][33][34] In plasmonic steam generation, the best results have been obtained with porous films, which reported efficiencies of ≈60% under 1 sun. [19,20] The efficiency limits of these structures originate from the resonant nature of classical plasmonic materials, which usually harvest energy only at characteristic frequencies of the solar spectrum. In our metasurface, we overcome this problem by using a completely new mechanism of heat generation supported by biomimetic nanoparticles that behave as an almost ideal blackbody. These nanoparticles mimic the shell of an Asian specie of beetle that possesses an exceptional ability in controlling light reflection. [29] Even when these nanoparticles are used in extremely small volumes, they completely absorb input photons at all frequencies and polarizations. By suitably dispersing these nanoparticles in a paper film, we created a metasurface with a remarkable ability in transforming light energy into heat, leading to a dramatic increase of solar thermal generation efficiency if compared to classical structures. Our nanoparticles are fully recyclable from the paper substrate and invulnerable to saline water corrosion, representing an ideal system for solar steam generation. [35] 2. Results Sample Design and Fabrication

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Development of the Microbial Electrolysis Desalination and Chemical-Production Cell for Desalination as Well as Acid and Alkali Productions

Cited by 170 publications

References 30 publications

Electro-Fermentation in Aid of Bioenergy and Biopolymers

Electro-Fermentation in Aid of Bioenergy and Biopolymers

Effects of current generation and electrolyte pH on reverse salt flux across thin film composite membrane in osmotic microbial fuel cells

High‐Performance Large‐Scale Solar Steam Generation with Nanolayers of Reusable Biomimetic Nanoparticles

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