Increasing the bio-electrochemical system performance in azo dye wastewater treatment: Reduced electrode spacing for improved hydrodynamics

Hong Cheng Wang; Dan Cui; Li Hui Yang; Yang Cheng Ding; Hao Yi Cheng; Ai Jie Wang

doi:10.1016/j.biortech.2017.09.036

Increasing the bio-electrochemical system performance in azo dye wastewater treatment: Reduced electrode spacing for improved hydrodynamics

Hong Cheng Wang
, Dan Cui
, Li Hui Yang
, Yang Cheng Ding
, Hao Yi Cheng
, Ai Jie Wang^*

^*Corresponding author for this work

School of Environment

CAS - Research Center for Eco-Environmental Sciences
University of Chinese Academy of Sciences
Beijing University of Technology

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

45 Scopus citations

Abstract

The electrodes spacing would exert a pronounced effect on bio-electrochemical systems (BESs) performance, especially for the scaling-up of reactors and practical applications. In this study, we traced the effect of electrode spacing on wastewater treatment performances from the aspects of hydrodynamics and electrochemical characteristics. Three series of folded stainless steel mesh (f-SSM) electrodes with electrode spacing of 2, 4 and 8 mm were designed for azo dye (acid orange 7 (AO7)) wastewater treatment. Results showed that BES with electrode spacing of 2 mm (R_S2) obtained the highest efficiencies of AO7 decolorization (90.9 ± 0.4%) and COD removal (36.8 ± 3.8%) at HRT of 8 h, which was 30.7% and 15.2% higher than that in BES with electrode spacing of 8 mm (R_S8), respectively. Moreover, the relationship between pollutants removal, internal resistance and hydrodynamics of BESs with different electrode spacing supported the hydrodynamics was significantly influence the pollutants removal performance.

Original language	English
Pages (from-to)	962-969
Number of pages	8
Journal	Bioresource Technology
Volume	245
DOIs	https://doi.org/10.1016/j.biortech.2017.09.036
State	Published - 2017

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Azo dye
Bio-electrochemical systems
Electrode spacing
Hydrodynamic
Scaling-up

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10.1016/j.biortech.2017.09.036

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@article{9eea16eba0da42d49427bb3b7422986f,

title = "Increasing the bio-electrochemical system performance in azo dye wastewater treatment: Reduced electrode spacing for improved hydrodynamics",

abstract = "The electrodes spacing would exert a pronounced effect on bio-electrochemical systems (BESs) performance, especially for the scaling-up of reactors and practical applications. In this study, we traced the effect of electrode spacing on wastewater treatment performances from the aspects of hydrodynamics and electrochemical characteristics. Three series of folded stainless steel mesh (f-SSM) electrodes with electrode spacing of 2, 4 and 8 mm were designed for azo dye (acid orange 7 (AO7)) wastewater treatment. Results showed that BES with electrode spacing of 2 mm (RS2) obtained the highest efficiencies of AO7 decolorization (90.9 ± 0.4\%) and COD removal (36.8 ± 3.8\%) at HRT of 8 h, which was 30.7\% and 15.2\% higher than that in BES with electrode spacing of 8 mm (RS8), respectively. Moreover, the relationship between pollutants removal, internal resistance and hydrodynamics of BESs with different electrode spacing supported the hydrodynamics was significantly influence the pollutants removal performance.",

keywords = "Azo dye, Bio-electrochemical systems, Electrode spacing, Hydrodynamic, Scaling-up",

author = "Wang, \{Hong Cheng\} and Dan Cui and Yang, \{Li Hui\} and Ding, \{Yang Cheng\} and Cheng, \{Hao Yi\} and Wang, \{Ai Jie\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.09.036",

language = "英语",

volume = "245",

pages = "962--969",

journal = "Bioresource Technology",

issn = "0960-8524",

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}

TY - JOUR

T1 - Increasing the bio-electrochemical system performance in azo dye wastewater treatment

T2 - Reduced electrode spacing for improved hydrodynamics

AU - Wang, Hong Cheng

AU - Cui, Dan

AU - Yang, Li Hui

AU - Ding, Yang Cheng

AU - Cheng, Hao Yi

AU - Wang, Ai Jie

PY - 2017

Y1 - 2017

N2 - The electrodes spacing would exert a pronounced effect on bio-electrochemical systems (BESs) performance, especially for the scaling-up of reactors and practical applications. In this study, we traced the effect of electrode spacing on wastewater treatment performances from the aspects of hydrodynamics and electrochemical characteristics. Three series of folded stainless steel mesh (f-SSM) electrodes with electrode spacing of 2, 4 and 8 mm were designed for azo dye (acid orange 7 (AO7)) wastewater treatment. Results showed that BES with electrode spacing of 2 mm (RS2) obtained the highest efficiencies of AO7 decolorization (90.9 ± 0.4%) and COD removal (36.8 ± 3.8%) at HRT of 8 h, which was 30.7% and 15.2% higher than that in BES with electrode spacing of 8 mm (RS8), respectively. Moreover, the relationship between pollutants removal, internal resistance and hydrodynamics of BESs with different electrode spacing supported the hydrodynamics was significantly influence the pollutants removal performance.

AB - The electrodes spacing would exert a pronounced effect on bio-electrochemical systems (BESs) performance, especially for the scaling-up of reactors and practical applications. In this study, we traced the effect of electrode spacing on wastewater treatment performances from the aspects of hydrodynamics and electrochemical characteristics. Three series of folded stainless steel mesh (f-SSM) electrodes with electrode spacing of 2, 4 and 8 mm were designed for azo dye (acid orange 7 (AO7)) wastewater treatment. Results showed that BES with electrode spacing of 2 mm (RS2) obtained the highest efficiencies of AO7 decolorization (90.9 ± 0.4%) and COD removal (36.8 ± 3.8%) at HRT of 8 h, which was 30.7% and 15.2% higher than that in BES with electrode spacing of 8 mm (RS8), respectively. Moreover, the relationship between pollutants removal, internal resistance and hydrodynamics of BESs with different electrode spacing supported the hydrodynamics was significantly influence the pollutants removal performance.

KW - Azo dye

KW - Bio-electrochemical systems

KW - Electrode spacing

KW - Hydrodynamic

KW - Scaling-up

UR - https://www.scopus.com/pages/publications/85029497351

U2 - 10.1016/j.biortech.2017.09.036

DO - 10.1016/j.biortech.2017.09.036

M3 - 文章

C2 - 28946197

AN - SCOPUS:85029497351

SN - 0960-8524

VL - 245

SP - 962

EP - 969

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Increasing the bio-electrochemical system performance in azo dye wastewater treatment: Reduced electrode spacing for improved hydrodynamics

Abstract

UN SDGs

Keywords

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