Inhibitory effect of veterinary antibiotics on denitrification in groundwater

A microcosm approach

Mahtab Ahmad, Meththika Vithanage, Kangjoo Kim, Ju Sik Cho, Young Han Lee, Young Kyoo Joo, Sang Soo Lee, Yong Sik Ok

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Veterinary antibiotics in groundwater may affect natural microbial denitrification process. A microcosm study was conducted to evaluate the influence of sulfamethazine and chlortetracycline at different concentrations (0, 0.01, 0.1, and 1.0 mg/L) on nitrate reduction in groundwater under denitrifying condition. Decrease in nitrate removal and nitrite production was observed with the antibiotics. Maximum inhibition of nitrate removal was observed after seven days of incubation with 0.01 mg/L sulfamethazine (17.0%) and 1.0 mg/L chlortetracycline (15.4%). The nitrite production was inhibited with 1.0 mg/L sulfamethazine to 82.0% and chlortetracycline to 31.1%. The initial/final nitrate concentrations indicated that 0.01 mg/L sulfamethazine and 1.0 mg/L chlortetracycline were most effective in inhibiting activity of denitrifying bacteria in groundwater. After 12 days of incubation, the sulfamethazine biodegradation was observed whereas chlortetracycline was persistent. Sulfamethazine and chlortetracycline in groundwater could inhibit the growth and capability of naturally occurring denitrifying bacteria, thereby threatening nitrate pollution in groundwater.

Original languageEnglish
Article number879831
JournalThe Scientific World Journal
Volume2014
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Fingerprint

Denitrification
Sulfamethazine
Groundwater
Chlortetracycline
antibiotics
Nitrates
microcosm
denitrification
nitrate
Anti-Bacterial Agents
groundwater
Nitrites
nitrite
Bacteria
incubation
bacterium
Biodegradation
biodegradation
Pollution
effect

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)

Cite this

Inhibitory effect of veterinary antibiotics on denitrification in groundwater : A microcosm approach. / Ahmad, Mahtab; Vithanage, Meththika; Kim, Kangjoo; Cho, Ju Sik; Lee, Young Han; Joo, Young Kyoo; Lee, Sang Soo; Ok, Yong Sik.

In: The Scientific World Journal, Vol. 2014, 879831, 01.01.2014.

Research output: Contribution to journalArticle

Ahmad, Mahtab ; Vithanage, Meththika ; Kim, Kangjoo ; Cho, Ju Sik ; Lee, Young Han ; Joo, Young Kyoo ; Lee, Sang Soo ; Ok, Yong Sik. / Inhibitory effect of veterinary antibiotics on denitrification in groundwater : A microcosm approach. In: The Scientific World Journal. 2014 ; Vol. 2014.
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