Microbial reduction of Cr (VI) in to Cr (III) by locally isolated Pseudomonas aeruginosa

1st Annual Applied Science and Engineering Conference

工业技术;自然科学

Munawaroh, H.S.H.^1 ; Gumilar, G.G.^1 ; Nandiyanto, A.B.D.^1 ; Kartikasari, S.^1 ; Kusumawaty, D.^1 ; Hasanah, L.^1

FPMIPA Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung, Jawa Barat

40154, Indonesia^1

关键词: Bioremediation agent;    Cr reductions;    Hexavalent chromium;    High efficiency conversions;    Leather tanneries;    Microbial reduction;    Pseudomonas aeruginosa;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/180/1/012296/pdf
DOI  :  10.1088/1757-899X/180/1/012296

来源: IOP

【 摘 要 】

This study aims at investigating the influence of Cr (VI) on growth of pseudomonas aeruginosa and Cr (VI) reduction in to Cr (III) on leather tannery effluent model by indigenous pseudomonas aeruginosa. The effect of Cr (VI) on pseudomonas aeruginosa growth was checked by growing the isolated in the medium containing certain concentration of sodium dichromat (K2Cr2O7) as source of hexavalent chromium. Specthrophotometer analysis showed that the rate of pseudomonas aeruginosa growth decreased at the concentration of 100 ppm of hexavalent chromium (Cr (VI)). In addition, the reduction of Cr (VI) was monitored by growing the isolated in the medium with K2Cr2O7. The result of AAS and specthrophotometer show the decreased of Cr (VI) concentration in the medium from 100 to 5.86 ppm with the conversion efficiency reach to 94.73% during 48 hours of the treatment. High efficiency conversion of Cr (VI) in to Cr (III) indicates the possibility of pseudomonas aeruginosa as promising bioremediation agent to reduce Cr (VI) in the environment.