Heavy metals in the environment: Its influence on anaerobic
sewage sludge stabilisation

a 2018

Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation

VÍTĚZ, Tomáš, Tereza DOKULILOVÁ, Monika VÍTĚZOVÁ and Markéta KOPECKÁ

Basic information

Original name

Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation

Authors

VÍTĚZ, Tomáš (203 Czech Republic, guarantor), Tereza DOKULILOVÁ, Monika VÍTĚZOVÁ (203 Czech Republic, belonging to the institution) and Markéta KOPECKÁ (203 Czech Republic, belonging to the institution)

Edition

4th International Conference on Pollution Control and Sustainable Environment, 2018

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

20801 Environmental biotechnology

Country of publisher

Italy

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/18:00103374

Organization unit

Faculty of Science

Keywords in English

heavy metals; sewage sludge stabilisation; biogas

Abstract

V originále

The work is focused on the impact of heavy metals on anaerobic sewage sludge stabilization process, thus biogas production and quality. Primary source of heavy metals in urban wastewater is industry which represents up to 50% ot the total heavy metal content in sewage sludge. Domestic sources are mainly associated with leaching from plumbing materials, gutters and roofs, galvanised materials, the use of detergents and washing powders, and the use of body care products. Anaerobic sewage sludge stabilisation is a complex microbiological process involving various types of anaerobic and facultative anaerobic bacteria. This way of sludge treatment involves degradation and the stabilisation of organic matter, with reduction in odour, pathogens and the mass of solid organic material that requires further processing. This is accomplished by the biological conversion of organic matter to methane (CH4) and carbon dioxide (CO2). Sludge samples were collected directly from the anaerobic sewage sludge stabilisation tank located at the wastewater treatment plant (WWTP) in Brno, Czech Republic, population equivalent (PE) 513,000. Biogas production and quality was measured using batch anaerobic fermenters with the volume of 5 dm3 at the temperature 38oC+-0.2oC. Into fermenters five different amounts of heavy metals (Cu, Zn) were added. Cumulative biogas and methane production were used as the comparative parameters of tested metals inhibitory effect. Hypothesis, which predicts presence of inhibitory effect of zinc and copper on anaerobic microorganisms, mainly on methanogenic archaea, was confirmed. The lowest concentration of zinc and copper which causes significant inhibition of biogas production is 400 mg Zn2+ l-1 and 1000 mg Cu2 l-1, which cause reduction of 10.3+-2.0% and 82.8+- 1.1 %, respectively.

Links

MUNI/A/1080/2017, interní kód MU

Name: Podpora výzkumné činnosti studentů Mikrobiologie a molekulární biotechnologie 2

Investor: Masaryk University, Category A

Citovat

VÍTĚZ, Tomáš, Tereza DOKULILOVÁ, Monika VÍTĚZOVÁ and Markéta KOPECKÁ. Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation. In 4th International Conference on Pollution Control and Sustainable Environment. 2018.

@proceedings{1426078,
   author = {Vítěz, Tomáš and Dokulilová, Tereza and Vítězová, Monika and Kopecká, Markéta},
   booktitle = {4th International Conference on Pollution Control and Sustainable Environment},
   keywords = {heavy metals; sewage sludge stabilisation; biogas},
   language = {eng},
   title = {Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation},
   year = {2018}
}

TY  - CONF
ID  - 1426078
AU  - Vítěz, Tomáš - Dokulilová, Tereza - Vítězová, Monika - Kopecká, Markéta
PY  - 2018
TI  - Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation
KW  - heavy metals
KW  - sewage sludge stabilisation
KW  - biogas
N2  - The work is focused on the impact of heavy metals on anaerobic sewage sludge stabilization process, thus biogas production and quality. Primary source of heavy metals in urban wastewater is industry which represents up to 50% ot the total heavy metal content in sewage sludge. Domestic sources are mainly associated with leaching from plumbing materials, gutters and roofs, galvanised materials, the use of detergents and washing powders, and the use of body care products. Anaerobic sewage sludge stabilisation is a complex microbiological process involving various types of anaerobic and facultative anaerobic bacteria. This way of sludge treatment involves degradation and the stabilisation of organic matter, with reduction in odour, pathogens and the mass of solid organic material that requires further processing. This is accomplished by the biological conversion of organic matter to methane (CH4) and carbon dioxide (CO2). Sludge samples were collected directly from the anaerobic sewage sludge stabilisation tank located at the wastewater treatment plant (WWTP) in Brno, Czech Republic, population equivalent (PE) 513,000. Biogas production and quality was measured using batch anaerobic fermenters with the volume of 5 dm3 at the temperature 38oC+-0.2oC. Into fermenters five different amounts of heavy metals (Cu, Zn) were added. Cumulative biogas and methane production were used as the comparative parameters of tested metals inhibitory effect. Hypothesis, which predicts presence of inhibitory effect of zinc and copper on anaerobic microorganisms, mainly on methanogenic archaea, was confirmed. The lowest concentration of zinc and copper which causes significant inhibition of biogas production is 400 mg Zn2+ l-1 and 1000 mg Cu2 l-1, which cause reduction of 10.3+-2.0% and 82.8+- 1.1 %, respectively.
ER  -

VÍTĚZ, Tomáš, Tereza DOKULILOVÁ, Monika VÍTĚZOVÁ and Markéta KOPECKÁ. Heavy metals in the environment: Its influence on anaerobic sewage sludge stabilisation. In \textit{4th International Conference on Pollution Control and Sustainable Environment}. 2018.

Detailed Information on Publication Record