Utilization of soak liquor in microbial fuel cell

S. Rajeswari; S. Vidhya; R. Navanietha Krishnaraj; P. Saravanan; S. Sundarapandiyan; S. Maruthamuthu; S. Ponmariappan; M. Vijayan

doi:10.1016/j.fuel.2016.04.121

Utilization of soak liquor in microbial fuel cell

S. Rajeswari, S. Vidhya, R. Navanietha Krishnaraj, P. Saravanan, S. Sundarapandiyan, S. Maruthamuthu, S. Ponmariappan, M. Vijayan

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Soak liquor is a primary effluent from tannery industry. It poses a threat to the environment and it is necessary to treat the effluent. The predominant tannery effluent bacteria were isolated, identified and used for the electricity generation. The present study investigates the use of soak liquor for the first time as a substrate for electricity generation in Microbial Fuel Cell (MFC). The high salinity and rich organic content of soak liquor increase the efficiency of MFC. Various electrochemical characterizations such as polarization curve, cyclic voltammetry, chronoamperometry, electrochemical impedance spectrometry were performed to analyse the efficacy of the soak liquor. MFC produced a maximum power density (P_max) of 44.02 mW/m² with a current density 140.34 mA/m². The chemical oxygen demand (COD) reduction rate was found to be 93% ± 4.7% in a cycle period of 168 h. The presence of humic acid was identified in soak liquor, which might be involved in shuttling of electrons from the microorganisms to the electrode.

Original language	English
Pages (from-to)	148-156
Number of pages	9
Journal	Fuel
Volume	181
DOIs	https://doi.org/10.1016/j.fuel.2016.04.121
State	Published - 1 Oct 2016
Externally published	Yes

Keywords

Humic acid
MFC
Soak liquor
Wastewater

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.fuel.2016.04.121

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title = "Utilization of soak liquor in microbial fuel cell",

abstract = "Soak liquor is a primary effluent from tannery industry. It poses a threat to the environment and it is necessary to treat the effluent. The predominant tannery effluent bacteria were isolated, identified and used for the electricity generation. The present study investigates the use of soak liquor for the first time as a substrate for electricity generation in Microbial Fuel Cell (MFC). The high salinity and rich organic content of soak liquor increase the efficiency of MFC. Various electrochemical characterizations such as polarization curve, cyclic voltammetry, chronoamperometry, electrochemical impedance spectrometry were performed to analyse the efficacy of the soak liquor. MFC produced a maximum power density (Pmax) of 44.02 mW/m2 with a current density 140.34 mA/m2. The chemical oxygen demand (COD) reduction rate was found to be 93% ± 4.7% in a cycle period of 168 h. The presence of humic acid was identified in soak liquor, which might be involved in shuttling of electrons from the microorganisms to the electrode.",

keywords = "Humic acid, MFC, Soak liquor, Wastewater",

author = "S. Rajeswari and S. Vidhya and {Navanietha Krishnaraj}, R. and P. Saravanan and S. Sundarapandiyan and S. Maruthamuthu and S. Ponmariappan and M. Vijayan",

year = "2016",

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doi = "10.1016/j.fuel.2016.04.121",

language = "English",

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T1 - Utilization of soak liquor in microbial fuel cell

AU - Rajeswari, S.

AU - Vidhya, S.

AU - Navanietha Krishnaraj, R.

AU - Saravanan, P.

AU - Sundarapandiyan, S.

AU - Maruthamuthu, S.

AU - Ponmariappan, S.

AU - Vijayan, M.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Soak liquor is a primary effluent from tannery industry. It poses a threat to the environment and it is necessary to treat the effluent. The predominant tannery effluent bacteria were isolated, identified and used for the electricity generation. The present study investigates the use of soak liquor for the first time as a substrate for electricity generation in Microbial Fuel Cell (MFC). The high salinity and rich organic content of soak liquor increase the efficiency of MFC. Various electrochemical characterizations such as polarization curve, cyclic voltammetry, chronoamperometry, electrochemical impedance spectrometry were performed to analyse the efficacy of the soak liquor. MFC produced a maximum power density (Pmax) of 44.02 mW/m2 with a current density 140.34 mA/m2. The chemical oxygen demand (COD) reduction rate was found to be 93% ± 4.7% in a cycle period of 168 h. The presence of humic acid was identified in soak liquor, which might be involved in shuttling of electrons from the microorganisms to the electrode.

AB - Soak liquor is a primary effluent from tannery industry. It poses a threat to the environment and it is necessary to treat the effluent. The predominant tannery effluent bacteria were isolated, identified and used for the electricity generation. The present study investigates the use of soak liquor for the first time as a substrate for electricity generation in Microbial Fuel Cell (MFC). The high salinity and rich organic content of soak liquor increase the efficiency of MFC. Various electrochemical characterizations such as polarization curve, cyclic voltammetry, chronoamperometry, electrochemical impedance spectrometry were performed to analyse the efficacy of the soak liquor. MFC produced a maximum power density (Pmax) of 44.02 mW/m2 with a current density 140.34 mA/m2. The chemical oxygen demand (COD) reduction rate was found to be 93% ± 4.7% in a cycle period of 168 h. The presence of humic acid was identified in soak liquor, which might be involved in shuttling of electrons from the microorganisms to the electrode.

KW - Humic acid

KW - MFC

KW - Soak liquor

KW - Wastewater

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DO - 10.1016/j.fuel.2016.04.121

M3 - Article

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SN - 0016-2361

VL - 181

SP - 148

EP - 156

JO - Fuel

JF - Fuel

ER -

Utilization of soak liquor in microbial fuel cell

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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