Inhibition Strategies of Reverse Solute Flux in Osmotic Microbial Fuel Cells: Take Forward Osmosis as Reference

Li, Shilong; Duan, Liang; Zhang, Hengliang; Li, Mingyue; Zhao, Yang; Xing, Fei

doi:10.1021/acsestwater.3c00225

Cited by 8 publications

(7 citation statements)

References 135 publications

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“…The increase in the PEG-400 concentration in the feed was due to the reverse flux of PEG-400 from the draw solution to the feed solution. There are many inhibition strategies for reverse flux of draw solute in FO, including draw solute development, membrane development, and modified operation conditions [ 23 ]. Although they are for the water system, some of the strategies may apply to improve the OSFO system.…”

Section: Resultsmentioning

confidence: 99%

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High-Degree Concentration Organic Solvent Forward Osmosis for Pharmaceutical Pre-Concentration

Takada,

Takagi,

Matsuyama

2024

Membranes

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Over half of the pharmaceutical industry’s capital investments are related to the purification of active pharmaceutical ingredients (APIs). Thus, a cost-effective purification process with a highly concentrated solution is urgently required. In addition, the purification process should be nonthermal because most APIs and their intermediates are temperature-sensitive. This study investigated a high-degree concentration organic solvent forward osmosis (OSFO) membrane process. A polyketone-based thin-film composite hollow fiber membrane with a polyamide selective layer on the bore surface was used as the OSFO membrane to achieve a high tolerance for organic solvents and an effective concentration. MeOH, sucrose octaacetate (SoA), and 2M polyethylene glycol 400 (PEG-400)/MeOH solution were used as the solvent, model API, and a draw solution (DS), respectively. OSFO was performed at room temperature (23 ± 3 °C). Consequently, the 11 wt% SoA/MeOH solution was concentrated to 52 wt% without any SoA leakage into the DS. To our knowledge, there are no studies in which up to a 5 wt% concentration by OSFO has been demonstrated. However, the final feed solution contained 17 wt% PEG-400. This study demonstrates the promising potential of OSFO for pharmaceutical pre-concentration and the technical problems that need to be solved for social implementation.

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Section: Resultsmentioning

confidence: 99%

“…The reverse flux of draw solute is the next problem that should be fixed to improve the pre-concentration processes. For this problem, the strategies attempted in the water system, such as draw solute development, membrane development and modified operation conditions, will be of some help [ 23 ].…”

Section: Discussionmentioning

confidence: 99%

High-Degree Concentration Organic Solvent Forward Osmosis for Pharmaceutical Pre-Concentration

Takada,

Takagi,

Matsuyama

2024

Membranes

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“…Additionally, RSF could negatively affect the activity of functional microorganisms in bioreactors [117,118]. Therefore, it was necessary to adopt various strategies to inhibit RSF, and these strategies have been comprehensively summarized and analyzed in a previous review [119]. Some studies found that power generation could significantly reduce the RSF of cations and anions, and the decrease in the ratio of anions to RSF might be caused by the synergistic effect of electric field, FO film, and charge balance [41].…”

Section: Reverse Solute Fluxmentioning

confidence: 99%

Simultaneous Wastewater Treatment and Resources Recovery by Forward Osmosis Coupled with Microbial Fuel Cell: A Review

Zhang,

Duan,

et al. 2024

Membranes

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Osmotic microbial fuel cells (OsMFCs) with the abilities to simultaneously treat wastewater, produce clean water, and electricity provided a novel approach for the application of microbial fuel cell (MFC) and forward osmosis (FO). This synergistic merging of functions significantly improved the performances of OsMFCs. Nonetheless, despite their promising potential, OsMFCs currently receive inadequate attention in wastewater treatment, water reclamation, and energy recovery. In this review, we delved into the cooperation mechanisms between the MFC and the FO. MFC facilitates the FO process by promoting water flux, reducing reverse solute flux (RSF), and degrading contaminants in the feed solution (FS). Moreover, the water flux based on the FO principle contributed to MFC’s electricity generation capability. Furthermore, we summarized the potential roles of OsMFCs in resource recovery, including nutrient, energy, and water recovery, and identified the key factors, such as configurations, FO membranes, and draw solutions (DS). We prospected the practical applications of OsMFCs in the future, including their capabilities to remove emerging pollutants. Finally, we also highlighted the existing challenges in membrane fouling, system expansion, and RSF. We hope this review serves as a useful guide for the practical implementation of OsMFCs.

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“…The mechanism and efficiency of wastewater treatment with this technology is largely determined by: MFC design [13], wastewater pH, temperature [14], the configuration of electrodes [15], mediators [16], membranes [17], and biofilm formation [18]. Key issues include the availability of organic substrates to microorganisms [19] and the type of wastewater to be treated [20].…”

Section: Introductionmentioning

confidence: 99%

Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

Mielcarek,

Bryszewski,

Kłobukowska

et al. 2024

Energies

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The management of drainage water (DW), which is produced during the soilless cultivation of plants, requires a high energy input. At the same time, DW is characterized by a high electrolytic conductivity, a high redox potential, and is also stable and putrefaction-free. In the present study, the natural properties of drainage water and a biotreatment method employing an external organic substrate in the form of citric acid (C/N 1.0, 1.5, 2.0) were utilized for energy recovery by a microbial fuel cell (MFC). The cathode chamber served as a retention tank for DW with a carbon felt electrode fixed inside. In turn, a biological reactor with biomass attached to the filling in the form of carbon felt served as the anode chamber. The filling also played the role of an electrode. The chambers were combined by an ion exchange membrane, forming an H letter-shaped system. They were then connected in an external electrical circuit with a resistance of 1k Ω. The use of a flow-through system eliminated steps involving aeration and mixing of the chambers’ contents. Citric acid was found to be an efficient organic substrate. The voltage of the electric current increased from 44.34 ± 60.92 mV to 566.06 ± 2.47 mV for the organic substrate dose expressed by the C/N ratio ranging from 1.0 to 2.0. At the same time, the denitrification efficiency ranged from 51.47 ± 9.84 to 95.60 ± 1.99% and that of dephosphatation from 88.97 ± 2.41 to 90.48 ± 1.99% at C/N from 1.0 to 2.0. The conducted studies confirmed the possibility of recovering energy during the biological purification of drainage water in a biofilm reactor. The adopted solution only required the connection of electrodes and tanks with an ion-selective membrane. Further research should aim to biologically treat DW followed by identification of the feasibility of energy recovery by means of MFC.

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Inhibition Strategies of Reverse Solute Flux in Osmotic Microbial Fuel Cells: Take Forward Osmosis as Reference

Cited by 8 publications

References 135 publications

High-Degree Concentration Organic Solvent Forward Osmosis for Pharmaceutical Pre-Concentration

High-Degree Concentration Organic Solvent Forward Osmosis for Pharmaceutical Pre-Concentration

Simultaneous Wastewater Treatment and Resources Recovery by Forward Osmosis Coupled with Microbial Fuel Cell: A Review

Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation

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