Effect of bronopol on anaerobic stabilization of sewage sludge and biogas production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F17%3A43912473" target="_blank" >RIV/62156489:43210/17:43912473 - isvavai.cz</a>

Result on the web

<a href="https://mnet.mendelu.cz/mendelnet2017/mnet_2017_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2017/mnet_2017_full.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of bronopol on anaerobic stabilization of sewage sludge and biogas production

Original language description

Antimicrobial preservatives (as a bronopol) are widely used in cosmetics and toiletries to prevent the spoilage of products due to microbial contamination than can be presented in wastewaters and in sewage sludge and may inhibit the process of sludge anaerobic stabilization. The aim of this study is to specify inhibitory effect of bronopol on anaerobic stabilization of sewage sludge and biogas production. Anaerobic fermentation test was carried out in 24 batch fermenters (the volume of 5 dm3) for 21 days at 38 +- 0,2 oC. Bronopol was used as toxic substance in 7 different concentrations; 25, 50, 75, 100, 125, 150 and 175 mg/l. The quantity and quality of produced biogas were monitored during hydraulic retention time. Hypothesis, which predicts presence of inhibitory effect of bronopol on anaerobic microorganisms, mainly on methanogenic Archaea, was confirmed. The lowest concentration of bronopol which causes significant inhibition of biogas production is 75 mg/l. This concentration leads to reduction of 5.8 +- 2.3% in the biogas yield. The lowest concentration of bronopol which causes significant inhibition of methane production is 75 mg/l. The reduction in biogas and methane production after addition of the highest bronopol concentration (175mg/l) is 51,5 +- 0,9% and 76,9 +- 2,9%, respectively. Which means that methanogens are more inhibited by bronopol than other groups of anaerobic microorganism.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

MendelNet 2017: Proceedings of International PhD Students Conference

ISBN

978-80-7509-529-9

ISSN

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e-ISSN

neuvedeno

Number of pages

6

Pages from-to

773-778

Publisher name

Mendelova univerzita v Brně

Place of publication

Brno

Event location

Brno

Event date

Nov 8, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000440194500139