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. 2019 May 1:237:217-227.
doi: 10.1016/j.jenvman.2019.02.066. Epub 2019 Feb 21.

Potential of mercury-tolerant bacteria for bio-uptake of mercury leached from discarded fluorescent lamps

Mohammed H Abu-Dieyeh  1 , Haya M Alduroobi  1 , Mohammad A Al-Ghouti  2
Affiliations

Potential of mercury-tolerant bacteria for bio-uptake of mercury leached from discarded fluorescent lamps

Mohammed H Abu-Dieyeh et al. J Environ Manage. .

Abstract

In this study, ten bacterial strains were found to be mercury resistant after their isolation from Qatari coastal sediments. Tolerance was found to be up to 100-150 ppm for five strains. Those strains had optimum growth conditions at salinity level of 10 ppm NaCl and pH 7-8. Starting from a concentration 7.9 ppm of mercury extracted from fluorescent lamps and after 6 days of incubation at 37 °C, two isolated strains HA6 (Bacillus spp.) and HA9 (Acinetobacter sp.) showed 96.7% and 98.9% of mercury bio-uptake efficiency, respectively. Other strains were capable of removing more than 60% of extracted mercury.

Keywords: Bioremediation; Biosorption; Discarded fluorescent lamps; Mercury.

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