Hang Wang, Yixuan Ye, Jinhui Zhang et al.

International Journal of Hydrogen Energy • 2023

Jingyue Yang, Yangguo Zhao, Xinpei Liu et al.

Marine Pollution Bulletin • 2022

Chunliu Wang, Helong Jiang

The Science of The Total Environment • 2019

Narong Touch, Tadashi HIBINO, Yuki Morimoto et al.

Environmental Technology • 2017

The method of improving bottom water environment using industrial wastes to suppress diffusion substances from bottom sediment has recently captured the attention of many researchers. In this study, wastewater discharge-derived sediment was used to examine an alternative approach involving the use of sediment microbial fuel cells (SMFCs) in relaxing the formation of hypoxic bottom water, and removing reduced substances from sediment. Concentrations of dissolved oxygen (DO) and other ions were measured in overlying water and sediment pore water with and without the application of SMFCs. The results suggest that SMFCs can markedly reduce hydrogen sulfide and manganese ion concentrations in overlying water, and decrease the depletions of redox potential and DO concentration. In addition, SMFCs can dissolve ferric compounds in the sediment and thereby release the ferric ion available to fix phosphate in the sediment. Our results indicate that SMFCs can be used as an alternative method to relax the formation of hypoxic bottom water and to remove reduced substances from the sediment, thus improving the quality of both water and sediment environments.

Xuan Wang, Yingying Zhi, Yun Chen et al.

Chemosphere • 2021

Bin Wang, Heng Zhang, Yonggang Yang et al.

Chemical Engineering Journal • 2020

Chin‐Tsan Wang, Yao-Cheng Lee, Yun-Ting Ou et al.

Applied Energy • 2017

Felix Tetteh Kabutey, Jing Ding, Qingliang Zhao et al.

Bioelectrochemistry • 2019

Mohammad Ali Ghazi Azari, Reza Gheshlaghi, Mahmood Akhavan Mahdavi et al.

International Journal of Hydrogen Energy • 2017

Qing Zhao, Min Ji, Ruying Li et al.

Bioresource Technology • 2017

Boyue Liu, Min Ji, Hongyan Zhai

Chemosphere • 2018

Xinshan Song, Wen‐Ting Wang, Xin Cao et al.

The Science of The Total Environment • 2020

Na Song, Zaisheng Yan, Huacheng Xu et al.

The Science of The Total Environment • 2019

Karl August von Haxthausen, Xinyu Lu, Yifeng Zhang et al.

Water Research • 2021

Phosphate pollution in lakes poses an intractable remediation challenge. Accumulated stocks of phosphorus in sediments cause high concentrations in the overlying water despite elimination of external sources. We propose to use sediment microbial fuel cells (SMFCs) for lake remediation by sediment phosphorus immobilization. The hypothesis is that SMFCs can increase sediment redox potential at the top layer, and that such changes will allow the sediment to retain phosphorus as immobile species. This study placed an emphasis on scalability, practicality, and use of low-cost materials. Stainless steel net was selected as electrode material, and modifications were tested: (i) chronoamperometric operation with anode poised at +399 mV (versus standard hydrogen potential); (ii) injection of graphite slurry; and (iii) coating with nickel-carbon matrix. Stainless steel electrodes were implemented in laboratory microcosms (1.3 L) and at field scale in a eutrophic freshwater lake. All tests were carried out in untreated sediment and water from Lake Søllerød, Denmark. Phosphate immobilization was shown at lab scale, with 85% decrease in overlying water using steel electrodes. At field scale maximum phosphate decrease of 94% was achieved in the water body above a 16 m 2 stainless steel SMFC electrode. Results are promising and warrant further study, including remediation trials at full scale. Added benefits include degradation of sediment organic matter and pollutants, inhibition of methane and sulfide emission and production of electricity.

Yuezhu Wang, Hanmin Zhang, Yujie Feng et al.

Biosensors and Bioelectronics • 2019

Mingsong Wu, Xun Xu, Kexiang Lu et al.

The Science of The Total Environment • 2018

T. K. Sajana, Makarand M. Ghangrekar, A. Mitra

Journal of Hazardous Toxic and Radioactive Waste • 2016

Contamination of water and sediment in water bodies is caused by the runoff from agriculture fields, and release of untreated/partially treated domestic and industrial wastewaters. Polluted water can affect the health of humans and aquatic organisms, and nutrient discharge can lead to algal blooms. A sustainable solution is required to treat these pollutants to protect future populations from environmental hazards. Sediment microbial fuel cells (SMFCs) is a new technology that has the potential to remediate sediment and water from sluggish water bodies and ponds, and generate some electricity as a byproduct. This critical review discusses types of SMFCs, factors affecting performance of the SMFCs, its capability to offer in situ treatment of sediment and wastewater, and challenges to overcome to make this technology efficient for remediating water quality and harvesting electricity.

Christopher K. Algar, Annie Green Howard, Colin R. Ward et al.

Scientific Reports • 2020

Sediment microbial fuel cells (SMFCs) generate electricity through the oxidation of reduced compounds, such as sulfide or organic carbon compounds, buried in anoxic sediments. The ability to remove sulfide suggests their use in the remediation of sediments impacted by point source organic matter loading, such as occurs beneath open pen aquaculture farms. However, for SMFCs to be a viable technology they must remove sulfide at a scale relevant to the environmental contamination and their impact on the sediment geochemistry as a whole must be evaluated. Here we address these issues through a laboratory microcosm experiment. Two SMFCs placed in high organic matter sediments were operated for 96 days and compared to open circuit and sediment only controls. The impact on sediment geochemistry was evaluated with microsensor profiling for oxygen, sulfide, and pH. The SMFCs had no discernable effect on oxygen profiles, however porewater sulfide was significantly lower in the sediment microcosms with functioning SMFCs than those without. Depth integrated sulfide inventories in the SMFCs were only 20% that of the controls. However, the SMFCs also lowered pH in the sediments and the consequences of this acidification on sediment geochemistry should be considered if developing SMFCs for remediation. The data presented here indicate that SMFCs have potential for the remediation of sulfidic sediments around aquaculture operations.

Mingsong Wu, Xinhua Xu, Qingliang Zhao et al.

RSC Advances • 2017

To in situ remediate rivers polluted by organic matter and heavy metals, lab-scale sediment microbial fuel cells (SMFCs) were operated under different conditions.

Yinxiu Liang, Hongyan Zhai, Boyue Liu et al.

The Science of The Total Environment • 2020

Na Song, Helong Jiang

International Journal of Hydrogen Energy • 2018

Syed Zaghum Abbas, Mohd Rafatullah, Norli Ismail et al.

International Journal of Energy Research • 2017

Performance of sediment microbial fuel cells (SMFCs) with aerated (A-SMFC) and nonaerated (NA-SMFC) cathodes was evaluated at different operating conditions in toxic metal removal and power generation. The A- and NA-SMFC open-circuit voltages were respectively about 665 and 275 mV, with quite steady performances for 120 days. The cell design points of both SMFCs were calculated by implementing polarization curves, and they were at 1 kΩ (power density 8.1 mW/m2 and current density 0.0504 mA/m2 with voltage 150 mV) for NA-SMFC and 100 Ω (power density 252.81 mW/m2 and current density 0.954 mA/m2 with voltage of 275 mV) for A-SMFC, respectively. Cathode potentials were at 30 kΩ 290 mV (NA-SMFC) and 500 mV (A-SMFC). As to the anode, at 30 KΩ, it was −180 mV (NA-SMFC) and 190 mV (A-SMFC). The voltammetry profiles of A-SMFC showed maximum current (forward scan, 22.7 μA; reverse scan, −19.4 μA) followed by NA-SMFC (forward scan, 11.3 μA; reverse scan, −9.5 μA). The cell design points of A-SMFC and NA-SMFC were altered after pH and temperature amendments at 200 and 700 Ω, respectively. As to metal removal rate, the maximum arsenic cadmium and lead removal was observed in A-SMFC at pH 7.0 (77.70%, 90.86%, and 83.91%) and 45°C (66.22%, 79.03%, and 71.17%). Scanning electron microscopy confirmed, at pH 7.0 and 45°C, an optimal biofilm growth at cathode and anode graphite of both SMFCs. After 120 days of operation, genomic DNA was extracted from biofilms and analyzed for rDNA 16S sequences. Similarity search was performed by using Basic Local Alignment Search Tool algorithm against the National Center for Biotechnology Information Gen Bank showing Pseudomonas spp. dominance at both anode and cathode. The results revealed that the A-SMFC system could be employed as an effective and long-term tool for power generation as well as stimulated bioremediation of the polluted sediments.

Syed Zaghum Abbas, Mohd Rafatullah, Moonis Ali Khan et al.

Frontiers in Microbiology • 2019

The industrial contamination of marine sediments with mercury, silver, and zinc in Penang, Malaysia was studied with bio-remediation coupled with power generation using membrane less open (aerated) and closed (non-aerated) sediment microbial fuel cells (SMFCs). The prototype for this SMFC is very similar to a natural aquatic environment because it is not stimulated externally and an oxygen sparger is inserted in the cathode chamber to create the aerobic environment in the open SMFC and no oxygen supplied in the closed SMFC. The open and closed SMFCs were showed the maximum voltage generation 300.5 mV (77.75 mW/m 2 ) and 202.7 mV (45.04 (mW/m 2 ), respectively. The cyclic voltammetry showed the oxidation peak in open SMFCs at +1.9 μA and reduction peak at -0.3 μA but in closed SMFCs oxidation and reduction peaks were noted at +1.5 μA and -1.0 μA, respectively. The overall impedance (anode, cathode and solution) of closed SMFCs was higher than open SMFCs. The charge transfer impedance showed that the rates of substrate oxidation and reduction were very low in the closed SMFCs than open SMFCs. The Nyquist arc indicated that O 2 act as electron acceptor in the open SMFCs and CO 2 in the closed SMFCs. The highest remediation efficiency of toxic metals [Hg (II) ions, Zn (II) ions, and Ag (I) ions] in the open SMFCs were 95.03%, 86.69%, and 83.65% in closed SMFCs were 69.53%, 66.57%, and 65.33%, respectively, observed during 60-80 days. The scanning electron microscope and 16S rRNA analysis showed diverse exoelectrogenic community in the open SMFCs and closed SMFCs. The results demonstrated that open SMFCs could be employed for the power generation and bioremediation of pollutants.

Xun Xu, Qingliang Zhao, Mingsong Wu et al.

Bioresource Technology • 2016

Mohd Nur Ikhmal Salehmin, Muhammad Farhan Hil Me, Wan Ramli Wan Daud et al.

The Science of The Total Environment • 2022

A. Yağmur Gören, Hatice Eser Ökten

Environmental Science Water Research & Technology • 2024

The removal of boron from aqueous solutions offers an important opportunity to improve the management of sustainable resources.

Tabbi Wilberforce, Enas Taha Sayed, Mohammad Ali Abdelkareem et al.

Journal of Water Process Engineering • 2020

Chongtao Liu, Ran Ju, Zhuangzhuang Liu et al.

Results in Engineering • 2025

Cathodic reactions govern bioenergy recovery and sustainable desalination in microbial desalination cells (MDCs), yet direct comparative assessment of dominant catholytes (oxygen vs. ferricyanide) under identical operational conditions remains absent. In this study, a controlled side-by-side evaluation using parallel MDCs with oxygen or ferricyanide catholytes under equivalent operational settings was developed. The findings indicated that the ferricyanide-based MDC outperformed the air-cathode, with higher power density (2.45 W/m2), desalination efficiency (over 90%), and remarkable removal rate of chemical oxygen demand (94%) and ammonia nitrogen (99%) for high-load wastewater (2000 mg/L chemical oxygen demand). Electrode potential slope analysis showed higher power was due to larger experimental working potential (314 mV) of ferricyanide versus air-cathode (173 mV). Electrochemical behaviors revealed that ferricyanide not only reduced the charge transfer resistance for MDC, but also augmented the cathodic potential and electron transfer efficiency, possessing favorable cathodic reduction kinetics. Furthermore, anions migrated with greater priority than cations, which was attributed to the interplay of electric field and hydrated ionic radius. These findings elucidate kinetic-thermodynamic trade-offs in catholyte selection, providing actionable principles for scalable, energy-efficient MDC design.

Abubakari Zarouk Imoro, Moses Mensah, R. Buamah

SHILAP Revista de lepidopterología • 2021

This study was conducted to improve the voltage production, desalination, and COD removal efficiencies of a five-chamber Microbial Desalination Cell (MDC). To do this, rhamnolipid was added to anolytes only and catholytes stirred to determine the effects of these factors on the MDC activity. This was followed by a factorial study to investigate the effects of the interactions of rhamnolipid and stirring on the voltage production, desalination, and COD removal efficiencies of the MDC. Increasing the concentration of rhamnolipid to 240 mg/L improved the peak voltage produced from 164.50 ± 0.11 to 623.70 ± 1.32 mV. Also, the desalination efficiency increased from 20.16 ± 1.97 % when no rhamnolipid was added to 24.89 ± 0.50 % at a rhamnolipid concentration of 240 mg/L, and COD removal efficiency increased from 48.74 ± 8.06 % to 64.17 ± 5.00 % at a rhamnolipid concentration of 400 mg/L. In the stirring experiments, increasing the number of stirring events increased peak voltage from 164.50 ± 0.11 to 567.27 ± 18.06 mV. Similarly, desalination and COD removal efficiencies increased from 20.16 ± 1.97 % and 48.74 ± 8.06 % to 24.26 ± 0.97 % and 50.23 ± 1.60 %, respectively, when the number of stirring events was more than twice a day. In the factorial study, voltage production, desalination, and COD removal efficiencies were 647.07 mV, 25.50 %, and 68.15 %, respectively. However, the effect of the interaction between rhamnolipid and stirring was found to be insignificant (p>0.05). Thus, the addition of only rhamnolipid or the stirring of catholytes only can improve the performance of the five-chamber MDC.

Sameh S. Ali, Zeshan Sheikh, Waheed Miran et al.

International Journal of Environmental Science and Technology • 2025

Shobhan Majumder, D. Istalingamurthy, B. M. Sadashiva Murthy et al.

Desalination and Water Treatment • 2023

Abubakari Zarouk Imoro, Marsha A. Moses, R. Buamah

Journal of Fundamental and Applied Sciences • 2021

In this study, the dilution of anolyte and catholyte as a pH control measure in a newly developed microbial desalination cell (MDC) was explored. Also, the effects of dilution on the newly developed MDC’s electricity generation, desalination and wastewater treatment efficiencies were assessed against a three-chamber MDC which used potassium phosphate buffer for pH control. On the average, the newly developed MDC exhibited a lower buffer capacity (pH change of 1.73 ± 0.06) as compared to the relatively higher buffer capacity (pH change of 1.49 ± 0.07) of the three-chamber MDC. However, the newly developed MDC produced a higher desalination efficiency of 50.01% compared to the 46.66% produced by the three-chamber MDC and a higher power density of 0.62 ± 0.13 W/m3 than the 0.35 ± 0.70 W/m3 produced by the three-chamber MDC. It’s COD reduction efficiency (63.21%) was also higher than the 42.81% produced by the three-chamber MDC.

Raissa Maulina, Maghifra Risang Khairiza, Tasya Ayu Febriana et al.

AIP conference proceedings • 2020

Microbial Desalination Cell (MDC) is a developed technology for reducing salt concentration of seawater, so it could be used for people’s daily needs. For increasing MDC performance, there was modification in reactor design, whereas the IEM membranes were arranged in two stacked design, yet in the end of desalination cycle there was a recirculation through anolyte-catholyte solutions to maintain pH level. The function of phosphate buffer as a buffer solution could be assisted with the recirculation of anolyte-catholyte which also maintain the pH level of solution. This research would examined the possibility of reducing the buffer phosphate volume with the recirculation process. The ratio of substrare volume and the buffer phosphate volume were: 1:1, 1:0.75, 1:0.5, and 1:0.25. The result showed that the optimum ratio of substrate volume and buffer phosphate volume in anode chamber was 1:0.5 respectively with TDR of 5.202 g/h.

Bo Ye, Tianyun Liang, Zexi Nong et al.

Desalination • 2021

Euntae Yang, Kyu‐Jung Chae, Mi Jin Choi et al.

Desalination • 2018

Manupati Hemalatha, J. Shanthi Sravan, S. Venkata Mohan

Bioresource Technology • 2020

B. Neethu, Harapriya Pradhan, Pankaj Sarkar et al.

MRS Advances • 2019

Vinayak Thengumthottathil, P. Kalaichelvi, Samsudeen Naina Mohamed

Microchemical Journal • 2025

Songwei Lin, Yaobin Lu, Bo Ye et al.

Frontiers of Environmental Science & Engineering • 2019

Siyu Yi, Lei Yu, Linlin Liu et al.

Journal of environmental chemical engineering • 2026