Effect of increasing anodic NaCl concentration on microbial fuel cell performance

Lefebvre, Olivier; Tan, Zhichao; Kharkwal, Shailesh; Ng, Henry

doi:10.1016/j.biortech.2012.02.048

Cited by 209 publications

(107 citation statements)

References 17 publications

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“…It is contrary to the recommendation (Lefebvre et al, 2012) to add up to 20 g/L of NaCl to increase the performance of MFC. The negative impact of increased salinity is in agreement with the previously observed changes in the Coulombic efficiency, which started to decrease at 10 g/L of NaCl, although the power production showed an increase (De Schamphelaire et al, 2010).…”

Section: C/n Ratio and Salinity Impact On Energy Productionmentioning

confidence: 41%

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Effect of C/N ratio and salinity on power generation in compost microbial fuel cells

2016

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Section: C/n Ratio and Salinity Impact On Energy Productionmentioning

confidence: 41%

“…have demonstrated the tolerance up to 10 g/L NaCl (Nevin et al, 2005). Beyond 20 g/L NaCl, MFC performance was observed to have decreased (Lefebvre et al, 2012). Table 1 gives the compost recipe used for this study.…”

Section: C/n Ratio and Salinity Concentration Selectionmentioning

confidence: 99%

Effect of C/N ratio and salinity on power generation in compost microbial fuel cells

2016

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“…In addition, the COD removal efficiency decreased from 40.3% to 32.9%, probably related to the salt accumulation in the anolyte: after 3 batches, the Na, Cl and K concentrations in the MEC anolyte reached 5,080 mg L -1 , 3,067 mg L -1 , and 1,846 mg L -1 , respectively. The high salt concentration 192 (higher than 100 mM) could adversely affect the physiology of anaerobic microbial consortia (Lefebvre et al 2012, Rousseau et al 2013). The MEC removed 63.7 ± 6.6 % of ammonium in the mixture, and an ammonium mass balance suggested that 36.2 ± 6.6 % of ammonium stayed in the anolyte, 9.9 ± 2.0 % was present in the catholyte and 53.8 ± 5.5 % was stripped out as ammonia gas (Figure 9.6B).…”

Section: The Mec-fo Systemmentioning

confidence: 99%

Resource recovery by osmotic bioelectrochemical systems towards sustainable wastewater treatment

Qin

2017

Environ. Sci.: Water Res. Technol.

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(academic)Recovering valuable resources from wastewater will transform wastewater management from a treatment focused to sustainability focused strategy, and creates the need for new technology development. An innovative treatment concept -osmotic bioelectrochemical system (OsBES), which is based on cooperation between bioelectrochemical systems (BES) and forward osmosis (FO), has been introduced and studied in the past few years. An OsBES can accomplish simultaneous treatment of wastewater and recovery of resources such as nutrient, energy, and water (NEW). The cooperation can be accomplished in either an integrated (osmotic microbial fuel cells, OsMFC) or coupled (microbial electrolysis cell-forward osmosis system, MEC-FO) configuration.In OsMFC, higher current generation than regular microbial fuel cell (MFC) was observed, resulting from the lower resistance of FO membrane. The electricity generation in OsMFC could greatly inhibit the reverse salt flux. Besides, ammonium removal was successfully demonstrated in OsMFC, making OsMFCs a promising technology for "NEW recovery" (NEW: nutrient, energy and water). For the coupled OsBES, an MEC-FO system was developed. The MEC produced an ammonium bicarbonate draw solute via recovering ammonia from synthetic organic solution, which was then applied in the FO for extracting water from the MEC anode effluent. The system has been advanced with treating landfill leachate. A mathematical model developed for ammonia removal/recovery in BES quantitatively confirmed that the NH4 + ions serve as effective proton shuttles across cation exchange membrane (CEM). Resource Recovery by Osmotic Bioelectrochemical Systems towards Sustainable Wastewater TreatmentMohan Qin Abstract (general audience)Nowadays, wastewater is no longer considered as waste. Instead, it is a pool for different kinds of resources, such as nutrient, energy, and water (NEW). Various technologies were developed to achieve NEW recovery from wastewater. A novel concept, osmotic bioelectrochemical system (OsBES) has been introduced and studied in the past few years. OsBES is based on two technologies: bioelectrochemical systems (BES) and forward osmosis (FO); and the corporation between these two technologies could accomplish simultaneous wastewater treatment and resource recovery. We investigated two kinds of OsBES: one is osmotic microbial fuel cells (OsMFC), and the other is microbial electrolysis cell-forward osmosis system (MEC-FO). For OsMFC, a mathematical model was built to understand the internal resistance, which will affect the current generation according to Om's law (I=U/R). The salt transport across the cation exchange membrane (CEM) is related to the current generation. The ion transport, especially ammonium/ammonia transport, across CEM membrane in BES was modelled, which will help the BES design and operation for ammonia recovery systems. The system performance for wastewater treatment and resource recovery in MEC-FO was fully investigated with both synthetic wastewater and landfill leach...

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“…The system performance, such as power generation and organic removal, can be measured by varying the factor under study. The effect of the varied factor is analyzed visually or by statistical models [130,[139][140][141][146][147][148][149][150][151]. Note that OFAT can only study the effect of a certain parameter on the MFC performance once at a time, resulting in interpretation problems of interactions or joint effects of multiple factors on the MFC performance.…”

Section: Data Generationmentioning

confidence: 99%

A Review of Modeling Bioelectrochemical Systems: Engineering and Statistical Aspects

et al. 2016

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Bioelectrochemical systems (BES) are promising technologies to convert organic compounds in wastewater to electrical energy through a series of complex physical-chemical, biological and electrochemical processes. Representative BES such as microbial fuel cells (MFCs) have been studied and advanced for energy recovery. Substantial experimental and modeling efforts have been made for investigating the processes involved in electricity generation toward the improvement of the BES performance for practical applications. However, there are many parameters that will potentially affect these processes, thereby making the optimization of system performance hard to be achieved. Mathematical models, including engineering models and statistical models, are powerful tools to help understand the interactions among the parameters in BES and perform optimization of BES configuration/operation. This review paper aims to introduce and discuss the recent developments of BES modeling from engineering and statistical aspects, including analysis on the model structure, description of application cases and sensitivity analysis of various parameters. It is expected to serves as a compass for integrating the engineering and statistical modeling strategies to improve model accuracy for BES development.

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Effect of increasing anodic NaCl concentration on microbial fuel cell performance

Cited by 209 publications

References 17 publications

Effect of C/N ratio and salinity on power generation in compost microbial fuel cells

Effect of C/N ratio and salinity on power generation in compost microbial fuel cells

Resource recovery by osmotic bioelectrochemical systems towards sustainable wastewater treatment

A Review of Modeling Bioelectrochemical Systems: Engineering and Statistical Aspects

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