Bioremediation of textile Dye (Magenta MP) using halotolerant marine bacteria

  Sumathi S,  Shruthy Glory I R,  Vinothini S,  Jayaprakashvel M,  Kalavathy G

Industrial effluents constitute the major reason for water pollution as the toxic substances in them affect the various water-borne living organisms. Dyes from the effluents of textile industries are one such toxic substance since they are highly carcinogenic. . In this present study, 30 halotolerant bacterial strains were isolated from water samples of Kelambakkam saltpans and they were designated with unique codes as AMETH153 to AMETH182. Experiments were carried out to analyze the hydrolytic enzyme producing ability of the strain such as tannase, lipase and protease. Also the ability to decolorize textile dyes was tested using different dyes namely Magenta MP, Black B, Yellow MR, etc. Finally the strains were screened for the production of important auxin hormone, IAA, and compared. Thus the efficient bacterial strains AMETH 156 and AMETH 182 were chosen for immobilization technique. Dye decolorization studies were also conducted by immobilization of these strains with calcium alginate, which gave a significant improvement in the percentage of dye decolorization. The strain AMETH 156 was found to be the most efficient of all the bacterial strains. The decolorized dye solutions were subjected to plant growth promotion studies by plate and cup assay. They were found to enhance the seed germination of four different crop plants, such as green gram, black gram, paddy and wheat, confirming that there was no phytotoxic effect on these seedlings. The study concluded that halotolerant marine bacterium strain AMETH 156 is a potential and a suitable agent for dye degrading and bioremediation of textile dyes.

Keywords- Halotolerant bacteria, hydrolytic enzymes, IAA, immobilization, decolorization, bioremediation.

Unique Identification Number - IJEDR1802068
Page Number(s) - 390-401
Pubished in - Volume 6 | Issue 2 | April 2018
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Sumathi S,  Shruthy Glory I R,  Vinothini S,  Jayaprakashvel M,  Kalavathy G,   "Bioremediation of textile Dye (Magenta MP) using halotolerant marine bacteria", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.6, Issue 2, pp.390-401, April 2018, Available at :http://www.ijedr.org/papers/IJEDR1802068.pdf