Rapid detection of heavy metal-induced toxicity in water using a fed-batch sulfur-oxidizing bacteria (SOB) bioreactor.

Authors:
Heonseop Eom
Heonseop Eom
Department of Civil and Environmental Engineering
Jin Ho Joo
Jin Ho Joo
Kangwon National University
Jang Hyun Hur
Jang Hyun Hur
Kangwon National University
South Korea
Kangmin Chon
Kangmin Chon
School of Environmental Science and Engineering
Byong-Hun Jeon
Byong-Hun Jeon
Yonsei University
South Korea

J Microbiol Methods 2019 Jun 9;161:35-42. Epub 2019 Apr 9.

Department of Biological Environment, Kangwon National University, 192-1 Hyoja-dong, Gangwon-do, Chuncheon-si 200-701, Republic of Korea. Electronic address:

A fed-batch bioreactor based on sulfur-oxidizing bacteria (SOB) was tested for rapid detection of heavy metal-induced toxicity in water. For this evaluation, SOB were exposed to water contaminated by selenium, mercury, hexavalent chromium, arsenic, cyanide, cadmium, and lead for 2 h and their inhibition rates were analyzed based on changes in electrical conductivity (EC). The results demonstrate that SOB were highly inhibited by selenium, mercury, hexavalent chromium, and arsenic but not by cyanide, cadmium, and lead. The 2 h half maximum effective concentrations (EC) of SOB for selenium, mercury, hexavalent chromium, and arsenic were estimated to be 0.33, 0.89, 1.18, and 0.24 mg/L, respectively, which are comparable or lower than earlier reports in the literature. However, the EC or EC values of SOB for cyanide, cadmium, and lead were notably higher compared to findings from previous toxicity tests that employed other microorganisms. The findings from the current study suggest that the fed-batch SOB bioreactor is suitable for rapid detection of toxicity induced by selenium, mercury, hexavalent chromium, and arsenic in water.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.mimet.2019.04.007DOI Listing
June 2019
4 Reads

Publication Analysis

Top Keywords

hexavalent chromium
16
mercury hexavalent
16
chromium arsenic
16
selenium mercury
16
cadmium lead
12
rapid detection
12
cyanide cadmium
12
sulfur-oxidizing bacteria
8
sob bioreactor
8
arsenic cyanide
8
lead 2 h
8
bacteria sob
8
heavy metal-induced
8
toxicity water
8
detection heavy
8
metal-induced toxicity
8
sob
7
arsenic estimated
4
estimated 033
4
electrical conductivity
4

Similar Publications