Influence of co-substrate on textile wastewater treatment and microbial community changes in the anaerobic biological sulfate reduction process

Kashif Rasool, Khaled Mahmoud, Dae Sung Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This study investigated the anaerobic treatment of sulfate-rich synthetic textile wastewater in three sulfidogenic sequential batch reactors (SBRs). The experimental protocol was designed to examine the effect of three different co-substrates (lactate, glucose, and ethanol) and their concentrations on wastewater treatment performance. Sulfate reduction and dye degradation were improved when lactate and ethanol were used as electron donors, as compared with glucose. Moreover, under co-substrate limited concentrations, color, sulfate, and chemical oxygen demand (COD) removal efficiencies were declined. By reducing co-substrate COD gradually from 3000 to 500. mg/L, color removal efficiencies were decreased from 98.23% to 78.46%, 63.37%, and 69.10%, whereas, sulfate removal efficiencies were decreased from 98.42%, 82.35%, and 87.0%, to 30.27%, 21.50%, and 10.13%, for lactate, glucose, and ethanol fed reactors, respectively. Fourier transform infrared spectroscopy (FTIR) and total aromatic amine analysis revealed lactate to be a potential co-substrate for further biodegradation of intermediate metabolites formed after dye degradation. Pyrosequencing analysis showed that microbial community structure was significantly affected by the co-substrate. The reactor with lactate as co-substrate showed the highest relative abundance of sulfate reducing bacteria (SRBs), followed by ethanol, whereas the glucose-fed reactor showed the lowest relative abundance of SRB.

Original languageEnglish
Pages (from-to)453-461
Number of pages9
JournalJournal of Hazardous Materials
Volume299
DOIs
Publication statusPublished - 4 Aug 2015

Fingerprint

Textiles
Waste Water
Wastewater treatment
Sulfates
microbial community
Lactic Acid
sulfate
substrate
Glucose
ethanol
glucose
Ethanol
Substrates
Biological Oxygen Demand Analysis
Chemical oxygen demand
sulfate-reducing bacterium
chemical oxygen demand
relative abundance
Bacteria
dye

Keywords

  • Co-substrate
  • Decolorization
  • Direct Red 80
  • Microbial community
  • Sulfidogenic sludge

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

@article{51d04c519c894328afd382eba6e0bb51,
title = "Influence of co-substrate on textile wastewater treatment and microbial community changes in the anaerobic biological sulfate reduction process",
abstract = "This study investigated the anaerobic treatment of sulfate-rich synthetic textile wastewater in three sulfidogenic sequential batch reactors (SBRs). The experimental protocol was designed to examine the effect of three different co-substrates (lactate, glucose, and ethanol) and their concentrations on wastewater treatment performance. Sulfate reduction and dye degradation were improved when lactate and ethanol were used as electron donors, as compared with glucose. Moreover, under co-substrate limited concentrations, color, sulfate, and chemical oxygen demand (COD) removal efficiencies were declined. By reducing co-substrate COD gradually from 3000 to 500. mg/L, color removal efficiencies were decreased from 98.23{\%} to 78.46{\%}, 63.37{\%}, and 69.10{\%}, whereas, sulfate removal efficiencies were decreased from 98.42{\%}, 82.35{\%}, and 87.0{\%}, to 30.27{\%}, 21.50{\%}, and 10.13{\%}, for lactate, glucose, and ethanol fed reactors, respectively. Fourier transform infrared spectroscopy (FTIR) and total aromatic amine analysis revealed lactate to be a potential co-substrate for further biodegradation of intermediate metabolites formed after dye degradation. Pyrosequencing analysis showed that microbial community structure was significantly affected by the co-substrate. The reactor with lactate as co-substrate showed the highest relative abundance of sulfate reducing bacteria (SRBs), followed by ethanol, whereas the glucose-fed reactor showed the lowest relative abundance of SRB.",
keywords = "Co-substrate, Decolorization, Direct Red 80, Microbial community, Sulfidogenic sludge",
author = "Kashif Rasool and Khaled Mahmoud and Lee, {Dae Sung}",
year = "2015",
month = "8",
day = "4",
doi = "10.1016/j.jhazmat.2015.07.044",
language = "English",
volume = "299",
pages = "453--461",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

TY - JOUR

T1 - Influence of co-substrate on textile wastewater treatment and microbial community changes in the anaerobic biological sulfate reduction process

AU - Rasool, Kashif

AU - Mahmoud, Khaled

AU - Lee, Dae Sung

PY - 2015/8/4

Y1 - 2015/8/4

N2 - This study investigated the anaerobic treatment of sulfate-rich synthetic textile wastewater in three sulfidogenic sequential batch reactors (SBRs). The experimental protocol was designed to examine the effect of three different co-substrates (lactate, glucose, and ethanol) and their concentrations on wastewater treatment performance. Sulfate reduction and dye degradation were improved when lactate and ethanol were used as electron donors, as compared with glucose. Moreover, under co-substrate limited concentrations, color, sulfate, and chemical oxygen demand (COD) removal efficiencies were declined. By reducing co-substrate COD gradually from 3000 to 500. mg/L, color removal efficiencies were decreased from 98.23% to 78.46%, 63.37%, and 69.10%, whereas, sulfate removal efficiencies were decreased from 98.42%, 82.35%, and 87.0%, to 30.27%, 21.50%, and 10.13%, for lactate, glucose, and ethanol fed reactors, respectively. Fourier transform infrared spectroscopy (FTIR) and total aromatic amine analysis revealed lactate to be a potential co-substrate for further biodegradation of intermediate metabolites formed after dye degradation. Pyrosequencing analysis showed that microbial community structure was significantly affected by the co-substrate. The reactor with lactate as co-substrate showed the highest relative abundance of sulfate reducing bacteria (SRBs), followed by ethanol, whereas the glucose-fed reactor showed the lowest relative abundance of SRB.

AB - This study investigated the anaerobic treatment of sulfate-rich synthetic textile wastewater in three sulfidogenic sequential batch reactors (SBRs). The experimental protocol was designed to examine the effect of three different co-substrates (lactate, glucose, and ethanol) and their concentrations on wastewater treatment performance. Sulfate reduction and dye degradation were improved when lactate and ethanol were used as electron donors, as compared with glucose. Moreover, under co-substrate limited concentrations, color, sulfate, and chemical oxygen demand (COD) removal efficiencies were declined. By reducing co-substrate COD gradually from 3000 to 500. mg/L, color removal efficiencies were decreased from 98.23% to 78.46%, 63.37%, and 69.10%, whereas, sulfate removal efficiencies were decreased from 98.42%, 82.35%, and 87.0%, to 30.27%, 21.50%, and 10.13%, for lactate, glucose, and ethanol fed reactors, respectively. Fourier transform infrared spectroscopy (FTIR) and total aromatic amine analysis revealed lactate to be a potential co-substrate for further biodegradation of intermediate metabolites formed after dye degradation. Pyrosequencing analysis showed that microbial community structure was significantly affected by the co-substrate. The reactor with lactate as co-substrate showed the highest relative abundance of sulfate reducing bacteria (SRBs), followed by ethanol, whereas the glucose-fed reactor showed the lowest relative abundance of SRB.

KW - Co-substrate

KW - Decolorization

KW - Direct Red 80

KW - Microbial community

KW - Sulfidogenic sludge

UR - http://www.scopus.com/inward/record.url?scp=84957989519&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84957989519&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2015.07.044

DO - 10.1016/j.jhazmat.2015.07.044

M3 - Article

C2 - 26241771

AN - SCOPUS:84957989519

VL - 299

SP - 453

EP - 461

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -