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Enhanced electron transfer mediator based on biochar from microalgal sludge for application to bioelectrochemical systems
- Authors
- Lee, Ja Hyun; Kim, Dong Sup; Yang, Ji Hyun; Chun, Youngsang; Yoo, Hah Young; Han, Sung Ok; Lee, Jinyoung; Park, Chulhwan; Kim, Seung Wook
- Issue Date
- 9월-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Microalgal sludge; Biochar; Mediator; Enzymatic fuel cell; Biosensor
- Citation
- BIORESOURCE TECHNOLOGY, v.264, pp.387 - 390
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 264
- Start Page
- 387
- End Page
- 390
- ISSN
- 0960-8524
- 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 N-2 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).
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