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Biodegradation of carcinogenic textile azo dyes using bacterial isolates of mangrove sediment

Journal of Coastal Life Medicine 2014年第2期 154-162页

作者： Guru Prasad Srinivasan Asnar Sikkanthar anandajothi elamaran Caroline R Delma Kumaran Subramaniyan Somasundaram Thirugnanasambandan Somasundaram Faculty of Marine Sciences Center of Advanced Study in Marine BiologyAnnamalai UniversityParangipettaiTNIndia Department of Microbiology Sri Sankara Arts and Science CollegeEnathurKanchipuramIndia

Objective:To evaluate the biodegrading property against carcinogenic azo dyes using bacterial isolates of mangrove ***:The bacterial isolates were subjected to submerged fermentation and their growth kinetics were *** potential strain was characterized using 16S rDNA ***:In the present study,dye degrading bacterial colonies were isolated from the mangrove sediment samples of Parangipettai estuarine area,Tamil *** the 30 morphologically different strains isolated,5 showed antagonistic *** growth kinetics of the two strains,P1 and G1,which showed potent activity were *** particular isolate(P1)showing promising dye degrading potential in the submerged fermentation was further *** strain was identified as Paenibacillus *** 16S rDNA ***:This study reveals the less explored microflora of mangrove *** novel strain may further be analyzed and used in the treatment of effluent from dye industry so as to reduce the impact of carcinogenic contaminants.

关键词： Biodegradation Azo dye Mangrove 16S rDNA Paenibacillus sp

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Fabrication and characterization of Ti6A14V/TiB2-TiC composites by powder metallurgy method

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Rare Metals 2017年第10期36卷 806-811页

作者： M. anandajothi S. Ramanathan V. Ananthi P. Narayanasamy Department of Manufacturing Engineering Annamalai University Chidambaram Tamil Nadu 608 002 India Physics Section Faculty of Engineering and Technology Annamalai University Chidambaram Tamil Nadu 608 002 India Department of Mechanical Engineering Kamaraj College of Engineering and Technology Virudhunagar Tamil Nadu 626 001 India

Titanium matrix （Ti6Al4V） composites rein- forced with TiB2 and TiC were produced through powder metallurgy method. The effect of addition of both TiB2 and TiC with different contents （2.5 wt%, 5.0 wt% and 7.5 wt%） on the density, microstructure and hardness properties of titanium matrix was investigated. The size distributions of the matrix alloy and reinforcement particles were measured by particle size analyzer. Microhardness of the sintered composites was evaluated using Vickers＇s hardness tester with a normal load of 3 N and a dwell time of 10 s. Ti6Al4V alloy and Ti6Al4V/TiB2-TiC composites were characterized through X-ray diffraction （XRD） and field emission scanning electron microscope （FESEM） equipped with energy-dispersive spectrometer （EDS）. The addition of TiB2 and TiC particles enriches the properties of Ti6Al4V alloy. The sintered Ti6Al4V/TiB2-TiC composite features a dense and pore-free microstructure with varying TiB2 and TiC particle distribution in the metal matrix. The results of this study show that the development of new phases plays a significant role in the properties of these composite materials.

关键词： Ti6Al4V TiB2 TiC Microstructure

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