Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems

Ja Hyun Lee; Dong Sup Kim; Ji Hyun Yang; Youngsang Chun; Hah Young Yoo; Sung Ok Han; Jinyoung Lee; Chulhwan Park; Seung Wook Kim

doi:10.1016/j.biortech.2018.06.097

Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems

Ja Hyun Lee, Dong Sup Kim, Ji Hyun Yang, Youngsang Chun, Hah Young Yoo, Sung Ok Han, Jinyoung Lee, Chulhwan Park, Seung Wook Kim

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

20 Citations (Scopus)

Abstract

This study is focused on the utilization of waste microalgal sludge (MS) from microalgal extraction and its potential as an electrode material. The MS was activated under N₂ at high temperature for conversion to biochar (MSB). In addition, cobalt (Co; metal hydroxide) and chitosan were used as a mediator for electron transfer by immobilization on MSB (MSB/Co/chitosan). Through analysis of the surface and components of the MSB/Co/chitosan, it was shown that Co and chitosan were properly synthesized with MSB. The enzymatic fuel cell (EFC) system successfully obtained a power density of 3.1 mW cm⁻² and a current density of 9.7 mA cm⁻². In addition, the glucose biosensors applied with the developed electron transfer mediator showed a sensitivity of 0.488 mA mM⁻¹ cm⁻².

Original language	English
Pages (from-to)	387-390
Number of pages	4
Journal	Bioresource Technology
Volume	264
DOIs	https://doi.org/10.1016/j.biortech.2018.06.097
Publication status	Published - 2018 Sept 1

Keywords

Biochar
Biosensor
Enzymatic fuel cell
Mediator
Microalgal sludge

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

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

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10.1016/j.biortech.2018.06.097

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title = "Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems",

abstract = "This study is focused on the utilization of waste microalgal sludge (MS) from microalgal extraction and its potential as an electrode material. The MS was activated under N2 at high temperature for conversion to biochar (MSB). In addition, cobalt (Co; metal hydroxide) and chitosan were used as a mediator for electron transfer by immobilization on MSB (MSB/Co/chitosan). Through analysis of the surface and components of the MSB/Co/chitosan, it was shown that Co and chitosan were properly synthesized with MSB. The enzymatic fuel cell (EFC) system successfully obtained a power density of 3.1 mW cm−2 and a current density of 9.7 mA cm−2. In addition, the glucose biosensors applied with the developed electron transfer mediator showed a sensitivity of 0.488 mA mM−1 cm−2.",

keywords = "Biochar, Biosensor, Enzymatic fuel cell, Mediator, Microalgal sludge",

author = "Lee, {Ja Hyun} and Kim, {Dong Sup} and Yang, {Ji Hyun} and Youngsang Chun and Yoo, {Hah Young} and Han, {Sung Ok} and Jinyoung Lee and Chulhwan Park and Kim, {Seung Wook}",

year = "2018",

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doi = "10.1016/j.biortech.2018.06.097",

language = "English",

volume = "264",

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journal = "Bioresource Technology",

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T1 - Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems

AU - Lee, Ja Hyun

AU - Kim, Dong Sup

AU - Yang, Ji Hyun

AU - Chun, Youngsang

AU - Yoo, Hah Young

AU - Han, Sung Ok

AU - Lee, Jinyoung

AU - Park, Chulhwan

AU - Kim, Seung Wook

PY - 2018/9/1

Y1 - 2018/9/1

N2 - This study is focused on the utilization of waste microalgal sludge (MS) from microalgal extraction and its potential as an electrode material. The MS was activated under N2 at high temperature for conversion to biochar (MSB). In addition, cobalt (Co; metal hydroxide) and chitosan were used as a mediator for electron transfer by immobilization on MSB (MSB/Co/chitosan). Through analysis of the surface and components of the MSB/Co/chitosan, it was shown that Co and chitosan were properly synthesized with MSB. The enzymatic fuel cell (EFC) system successfully obtained a power density of 3.1 mW cm−2 and a current density of 9.7 mA cm−2. In addition, the glucose biosensors applied with the developed electron transfer mediator showed a sensitivity of 0.488 mA mM−1 cm−2.

AB - This study is focused on the utilization of waste microalgal sludge (MS) from microalgal extraction and its potential as an electrode material. The MS was activated under N2 at high temperature for conversion to biochar (MSB). In addition, cobalt (Co; metal hydroxide) and chitosan were used as a mediator for electron transfer by immobilization on MSB (MSB/Co/chitosan). Through analysis of the surface and components of the MSB/Co/chitosan, it was shown that Co and chitosan were properly synthesized with MSB. The enzymatic fuel cell (EFC) system successfully obtained a power density of 3.1 mW cm−2 and a current density of 9.7 mA cm−2. In addition, the glucose biosensors applied with the developed electron transfer mediator showed a sensitivity of 0.488 mA mM−1 cm−2.

KW - Biochar

KW - Biosensor

KW - Enzymatic fuel cell

KW - Mediator

KW - Microalgal sludge

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SN - 0960-8524

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JO - Bioresource Technology

JF - Bioresource Technology

ER -

Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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