Integrated UV photodegradation and anaerobic digestion of textile dye for efficient biogas production using zeolite

Seth Apollo, Maurice S. Onyango, Aoyi Ochieng

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The efficiency of an integrated ultra-violet (UV) photocatalysis and anaerobic digestion (AD) system in the degradation of methylene blue (MB) dye was studied in up-flow fixed bed reactors. Zeolite was applied as support material for micro-organism and photocatalyst in the bioreactor and photoreactor, respectively. It was established that the application of either UV photodegradation or AD process as a single treatment method was not efficient in colour removal and chemical oxygen demand (COD) reduction. The AD process as a stand-alone process could only remove 32% of the colour and 57% COD while photodegradation as a stand-alone process had a good performance on colour removal (70%) but low COD removal efficiency (54%). However, integration of the two processes led to high COD, biochemical oxygen demand (BOD) and colour reduction efficiencies of above 75%. Results show that UV pre-treatment of MB before the AD step improved the biodegradability of the MB dye by 3-fold, this resulted in a 2.7-fold increase in biogas production as compared to a non-UV pre-treated MB.
Original languageEnglish
Pages (from-to)241-247
Number of pages7
JournalChemical Engineering Journal
Volume245
DOIs
Publication statusPublished - 2014

Fingerprint

Zeolites
Anaerobic digestion
Biofuels
Methylene Blue
Chemical oxygen demand
Biogas
Photodegradation
photodegradation
biogas
zeolite
chemical oxygen demand
dye
Textiles
Coloring Agents
Dyes
Color removal (water treatment)
fold
Color
Photocatalysis
Biochemical oxygen demand

Cite this

@article{4e701b65b5c140dd8cb92f05e71bb75e,
title = "Integrated UV photodegradation and anaerobic digestion of textile dye for efficient biogas production using zeolite",
abstract = "The efficiency of an integrated ultra-violet (UV) photocatalysis and anaerobic digestion (AD) system in the degradation of methylene blue (MB) dye was studied in up-flow fixed bed reactors. Zeolite was applied as support material for micro-organism and photocatalyst in the bioreactor and photoreactor, respectively. It was established that the application of either UV photodegradation or AD process as a single treatment method was not efficient in colour removal and chemical oxygen demand (COD) reduction. The AD process as a stand-alone process could only remove 32{\%} of the colour and 57{\%} COD while photodegradation as a stand-alone process had a good performance on colour removal (70{\%}) but low COD removal efficiency (54{\%}). However, integration of the two processes led to high COD, biochemical oxygen demand (BOD) and colour reduction efficiencies of above 75{\%}. Results show that UV pre-treatment of MB before the AD step improved the biodegradability of the MB dye by 3-fold, this resulted in a 2.7-fold increase in biogas production as compared to a non-UV pre-treated MB.",
author = "Seth Apollo and Onyango, {Maurice S.} and Aoyi Ochieng",
year = "2014",
doi = "10.1016/j.cej.2014.02.027",
language = "English",
volume = "245",
pages = "241--247",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

Integrated UV photodegradation and anaerobic digestion of textile dye for efficient biogas production using zeolite. / Apollo, Seth; Onyango, Maurice S.; Ochieng, Aoyi.

In: Chemical Engineering Journal, Vol. 245, 2014, p. 241-247.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Integrated UV photodegradation and anaerobic digestion of textile dye for efficient biogas production using zeolite

AU - Apollo, Seth

AU - Onyango, Maurice S.

AU - Ochieng, Aoyi

PY - 2014

Y1 - 2014

N2 - The efficiency of an integrated ultra-violet (UV) photocatalysis and anaerobic digestion (AD) system in the degradation of methylene blue (MB) dye was studied in up-flow fixed bed reactors. Zeolite was applied as support material for micro-organism and photocatalyst in the bioreactor and photoreactor, respectively. It was established that the application of either UV photodegradation or AD process as a single treatment method was not efficient in colour removal and chemical oxygen demand (COD) reduction. The AD process as a stand-alone process could only remove 32% of the colour and 57% COD while photodegradation as a stand-alone process had a good performance on colour removal (70%) but low COD removal efficiency (54%). However, integration of the two processes led to high COD, biochemical oxygen demand (BOD) and colour reduction efficiencies of above 75%. Results show that UV pre-treatment of MB before the AD step improved the biodegradability of the MB dye by 3-fold, this resulted in a 2.7-fold increase in biogas production as compared to a non-UV pre-treated MB.

AB - The efficiency of an integrated ultra-violet (UV) photocatalysis and anaerobic digestion (AD) system in the degradation of methylene blue (MB) dye was studied in up-flow fixed bed reactors. Zeolite was applied as support material for micro-organism and photocatalyst in the bioreactor and photoreactor, respectively. It was established that the application of either UV photodegradation or AD process as a single treatment method was not efficient in colour removal and chemical oxygen demand (COD) reduction. The AD process as a stand-alone process could only remove 32% of the colour and 57% COD while photodegradation as a stand-alone process had a good performance on colour removal (70%) but low COD removal efficiency (54%). However, integration of the two processes led to high COD, biochemical oxygen demand (BOD) and colour reduction efficiencies of above 75%. Results show that UV pre-treatment of MB before the AD step improved the biodegradability of the MB dye by 3-fold, this resulted in a 2.7-fold increase in biogas production as compared to a non-UV pre-treated MB.

U2 - 10.1016/j.cej.2014.02.027

DO - 10.1016/j.cej.2014.02.027

M3 - Article

VL - 245

SP - 241

EP - 247

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -