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 journalArticle

3 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 languageEnglish
Pages (from-to)387-390
Number of pages4
JournalBioresource Technology
Volume264
DOIs
Publication statusPublished - 2018 Sep 1

Fingerprint

Chitosan
sludge
electron
Electrons
fuel cell
cobalt
immobilization
hydroxide
activated sludge
Enzymatic fuel cells
electrode
glucose
metal
Cobalt
Biosensors
Glucose
Current density
Metals
Electrodes
biochar

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

Cite this

Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems. / Lee, Ja Hyun; Kim, Dong Sup; Yang, Ji Hyun; Chun, Youngsang; Yoo, Hah Young; Han, Sung Ok; Lee, Jinyoung; Park, Chulhwan; Kim, Seung Wook.

In: Bioresource Technology, Vol. 264, 01.09.2018, p. 387-390.

Research output: Contribution to journalArticle

Lee, Ja Hyun ; Kim, Dong Sup ; Yang, Ji Hyun ; Chun, Youngsang ; Yoo, Hah Young ; Han, Sung Ok ; Lee, Jinyoung ; Park, Chulhwan ; Kim, Seung Wook. / Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems. In: Bioresource Technology. 2018 ; Vol. 264. pp. 387-390.
@article{cca6d6a60e0a4eca85f11d25157ab0f7,
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",
month = "9",
day = "1",
doi = "10.1016/j.biortech.2018.06.097",
language = "English",
volume = "264",
pages = "387--390",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "Elsevier Limited",

}

TY - JOUR

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

UR - http://www.scopus.com/inward/record.url?scp=85049337264&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049337264&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2018.06.097

DO - 10.1016/j.biortech.2018.06.097

M3 - Article

VL - 264

SP - 387

EP - 390

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

ER -