Applicability of a submersible microbial fuel cell for Cr(VI) detection in water

Chung, Hye‐Kyung; Ju, Won Jung; Jho, Eun Hea; Nam, Kyoungphile

doi:10.1007/s10661-016-5625-4

Cited by 17 publications

(6 citation statements)

References 32 publications

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“…Earlier in a study, the internal resistance (161 Ω) reported was higher than recorded in the current study (98.2 Ω). For voltage generation, the maximum power density of SMFC with Cr(VI) (48.88 mW/m 2 ) was increased compared with the SMFC (39.22 mW/m 2 ), which was consistent with a previous study [ 38 ]. The occurrence of an increased voltage generation with the addition of Cr(VI) can be described by the Nernst equation (Equation (2)).…”

Section: Resultssupporting

confidence: 92%

A Novel Early Warning System Based on a Sediment Microbial Fuel Cell for In Situ and Real Time Hexavalent Chromium Detection in Industrial Wastewater

Zhao

Liu

Niu

et al. 2018

Sensors

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Hexavalent chromium (Cr(VI)) is a well-known toxic heavy metal in industrial wastewater, but in situ and real time monitoring cannot be achieved by current methods used during industrial wastewater treatment processes. In this study, a Sediment Microbial Fuel Cell (SMFC) was used as a biosensor for in situ real-time monitoring of Cr(VI), which was the organic substrate is oxidized in the anode and Cr(VI) is reduced at the cathode simultaneously. The pH 6.4 and temperature 25 °C were optimal conditions for the operation. Under the optimal conditions, linearity (R2 = 0.9935) of the generated voltage was observed in the Cr(VI) concentration range from 0.2 to 0.7 mg/L. The system showed high specificity for Cr(VI), as other co-existing ions such as Cu2+, Zn2+, and Pb2+ did not interfere with Cr(VI) detection. In addition, when the sediment MFC-based biosensor was applied for measuring Cr(VI) in actual wastewater samples, a low deviation (<8%) was obtained, which indicated its potential as a reliable biosensor device. MiSeq sequencing results showed that electrochemically active bacteria (Geobacter and Pseudomonas) were enriched at least two-fold on the biofilm of the anode in the biosensor as compared to the SMFC without Cr(VI). Cyclic voltammetry curves indicated that a pair of oxidation/reduction peaks appeared at −111 mV and 581 mV, respectively. These results demonstrated that the proposed sediment microbial fuel cell-based biosensor can be applied as an early warning device for real time in situ detection of Cr(VI) in industrial wastewaters.

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Section: Resultssupporting

confidence: 92%

A Novel Early Warning System Based on a Sediment Microbial Fuel Cell for In Situ and Real Time Hexavalent Chromium Detection in Industrial Wastewater

Zhao

Liu

Niu

et al. 2018

Sensors

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“…The development of MFCs with two chambers instead of one chamber has been effectuated by Hyeonyong Chung et al [ 119 ] for Cr(VI) detection in water. The generated voltage was utilized to pursue the change in Cr(VI) concentration under different conditions in the co-presence of Fe(II) up to 1:15 molar ratio and in the co-presence of fulvic acid up to 50 mg·L −1 .…”

Section: Electrochemical Biosensors For Hexavalent Chromium Determmentioning

confidence: 99%

Recent Advances in Electrochemical Monitoring of Chromium

Hilali

Mohammadi

Amine

et al. 2020

Sensors

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The extensive use of chromium by several industries conducts to the discharge of an immense quantity of its various forms in the environment which affects drastically the ecological and biological lives especially in the case of hexavalent chromium. Electrochemical sensors and biosensors are useful devices for chromium determination. In the last five years, several sensors based on the modification of electrode surface by different nanomaterials (fluorine tin oxide, titanium dioxide, carbon nanomaterials, metallic nanoparticles and nanocomposite) and biosensors with different biorecognition elements (microbial fuel cell, bacteria, enzyme, DNA) were employed for chromium monitoring. Herein, recent advances related to the use of electrochemical approaches for measurement of trivalent and hexavalent chromium from 2015 to 2020 are reported. A discussion of both chromium species detections and speciation studies is provided.

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“…However, their method was restricted to acidic water of pH 1−2 with a concentration range of 0.1−15 mg/L of Cr 6+ . 28 The detection method was valid only in the co-presence of Fe 2+ with Cr 6+ /Fe 2+ in the molar ratio of 1:15. The voltage output of the MFC varied with the concentration of Cr 6+ in the cathode at the pH values of 1 and 2, and of the co-existing Fe 2+ concentration, ionic strength, and organic matter concentration as well, which limits the usage of this sensor.…”

Section: Introductionmentioning

confidence: 99%

“…However, the recovery time of this CMFC was too long. Recently, Chung et al 28 used a dual‐chamber MFC for the detection of Cr 6+ . However, their method was restricted to acidic water of pH 1−2 with a concentration range of 0.1−15 mg/L of Cr 6+ 28 .…”

Section: Introductionmentioning

confidence: 99%

Feasibility study on a mini autonomous biosensor based on microbial fuel cell for monitoring hexavalent chromium in wastewater

Wang

Ubando

Katiyar

et al. 2020

Intl J of Energy Research

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Microbial fuel cells (MFCs) are considered as power generation devices for sustainable energy. However, the power generated is insignificant compared to other energy production devices. In this study, a mini autonomous biosensor (MAB) based on MFCs has been designed for detecting hazardous hexavalent chromium in wastewater. Hexavalent chromium has been classified as a human carcinogen causing serious birth defects due to its mutagenic and teratogenic properties. The power generated by the MAB has been investigated to study the feasibility of providing power to itself. In addition, electrochemical analyses of conductive silver paste and carbon cloth as the anode were conducted in the MAB for detecting hexavalent chromium in the anode chamber. Results show that a maximum voltage of 518.17 mV and a power density of 1.075 mW/cm 2 could be achieved using carbon cloth with an external resistance of 1000 Ω, while a higher limiting current density of 0.015 mA/cm 2 could be achieved with conductive silver glue as the anode electrode. Besides, the voltage output of the MAB decreased rapidly with the addition of hexavalent chromium into the wastewater. Also, the recovery time for the MAB was much shorter than found in previous studies. The MAB demonstrated potential for simultaneous production of electricity and detection of hexavalent chromium, which would open up avenues for autosensing applications in the environment as well as smart powering devices. Results indicate that the MAB with conductive silver glue as anode electrode is feasible for detecting hexavalent chromium in wastewater.

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Applicability of a submersible microbial fuel cell for Cr(VI) detection in water

Cited by 17 publications

References 32 publications

A Novel Early Warning System Based on a Sediment Microbial Fuel Cell for In Situ and Real Time Hexavalent Chromium Detection in Industrial Wastewater

A Novel Early Warning System Based on a Sediment Microbial Fuel Cell for In Situ and Real Time Hexavalent Chromium Detection in Industrial Wastewater

Recent Advances in Electrochemical Monitoring of Chromium

Feasibility study on a mini autonomous biosensor based on microbial fuel cell for monitoring hexavalent chromium in wastewater

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