Sustainable electricity generation and ammonium removal by microbial fuel cell with a microalgae assisted cathode at various environmental conditions

Ramesh Kakarla; Booki Min

doi:10.1016/j.biortech.2019.03.111

Sustainable electricity generation and ammonium removal by microbial fuel cell with a microalgae assisted cathode at various environmental conditions

Ramesh Kakarla, Booki Min

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

28 Citations (Scopus)

Abstract

Power generation and nutrient removal by a microbial fuel cell assisted with an algae growth in cathode chamber were evaluated along with continuous measurements of dissolved oxygen (DO) at various light and temperature conditions. Under light/dark regime of 18/6 hrs, a sustainable voltage of 0.31 V was observed with sufficient DO in the dark period. However, maximum NH₄⁺-N removal rate (22.7 mg/L.d) and removal percentage (95.5%) was observed with 12/12 light/dark regime. Voltage and nitrogen removal increased with higher photon flux density up to 92 µE m⁻² s⁻¹, and the highest 0.35 V voltage and NH₄⁺-N removal rate of 26.5 mg/L.d were obtained. A higher temperature condition was favorable to improve the performance of algae cathode MFCs, but no substantial influence was observed relatively (19–35 °C). This study suggests that algae-cathode MFCs could continuously generate sustainable power with nutrient removal at optimum light and temperature conditions.

Original language	English
Pages (from-to)	161-167
Number of pages	7
Journal	Bioresource Technology
Volume	284
DOIs	https://doi.org/10.1016/j.biortech.2019.03.111
Publication status	Published - Jul 2019

Keywords

Algae growth
Electricity generation
Light/dark regimes
Microbial fuel cell
NH-N removal
Photon flux density
Temperature

UN SDGs

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

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10.1016/j.biortech.2019.03.111

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title = "Sustainable electricity generation and ammonium removal by microbial fuel cell with a microalgae assisted cathode at various environmental conditions",

abstract = "Power generation and nutrient removal by a microbial fuel cell assisted with an algae growth in cathode chamber were evaluated along with continuous measurements of dissolved oxygen (DO) at various light and temperature conditions. Under light/dark regime of 18/6 hrs, a sustainable voltage of 0.31 V was observed with sufficient DO in the dark period. However, maximum NH4+-N removal rate (22.7 mg/L.d) and removal percentage (95.5%) was observed with 12/12 light/dark regime. Voltage and nitrogen removal increased with higher photon flux density up to 92 µE m−2 s−1, and the highest 0.35 V voltage and NH4+-N removal rate of 26.5 mg/L.d were obtained. A higher temperature condition was favorable to improve the performance of algae cathode MFCs, but no substantial influence was observed relatively (19–35 °C). This study suggests that algae-cathode MFCs could continuously generate sustainable power with nutrient removal at optimum light and temperature conditions.",

keywords = "Algae growth, Electricity generation, Light/dark regimes, Microbial fuel cell, NH-N removal, Photon flux density, Temperature",

author = "Ramesh Kakarla and Booki Min",

note = "Funding Information: This work was supported by a grant from Kyung Hee University ( KHU-20160599 ). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jul,

doi = "10.1016/j.biortech.2019.03.111",

language = "English",

volume = "284",

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journal = "Bioresource Technology",

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T1 - Sustainable electricity generation and ammonium removal by microbial fuel cell with a microalgae assisted cathode at various environmental conditions

AU - Kakarla, Ramesh

AU - Min, Booki

PY - 2019/7

Y1 - 2019/7

N2 - Power generation and nutrient removal by a microbial fuel cell assisted with an algae growth in cathode chamber were evaluated along with continuous measurements of dissolved oxygen (DO) at various light and temperature conditions. Under light/dark regime of 18/6 hrs, a sustainable voltage of 0.31 V was observed with sufficient DO in the dark period. However, maximum NH4+-N removal rate (22.7 mg/L.d) and removal percentage (95.5%) was observed with 12/12 light/dark regime. Voltage and nitrogen removal increased with higher photon flux density up to 92 µE m−2 s−1, and the highest 0.35 V voltage and NH4+-N removal rate of 26.5 mg/L.d were obtained. A higher temperature condition was favorable to improve the performance of algae cathode MFCs, but no substantial influence was observed relatively (19–35 °C). This study suggests that algae-cathode MFCs could continuously generate sustainable power with nutrient removal at optimum light and temperature conditions.

AB - Power generation and nutrient removal by a microbial fuel cell assisted with an algae growth in cathode chamber were evaluated along with continuous measurements of dissolved oxygen (DO) at various light and temperature conditions. Under light/dark regime of 18/6 hrs, a sustainable voltage of 0.31 V was observed with sufficient DO in the dark period. However, maximum NH4+-N removal rate (22.7 mg/L.d) and removal percentage (95.5%) was observed with 12/12 light/dark regime. Voltage and nitrogen removal increased with higher photon flux density up to 92 µE m−2 s−1, and the highest 0.35 V voltage and NH4+-N removal rate of 26.5 mg/L.d were obtained. A higher temperature condition was favorable to improve the performance of algae cathode MFCs, but no substantial influence was observed relatively (19–35 °C). This study suggests that algae-cathode MFCs could continuously generate sustainable power with nutrient removal at optimum light and temperature conditions.

KW - Algae growth

KW - Electricity generation

KW - Light/dark regimes

KW - Microbial fuel cell

KW - NH-N removal

KW - Photon flux density

KW - Temperature

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JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

ER -

Sustainable electricity generation and ammonium removal by microbial fuel cell with a microalgae assisted cathode at various environmental conditions

Abstract

Keywords

UN SDGs

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