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1-2), 125-133. 27. Aceituno, V. C., Ahn, S., Simu, S. Y., Wang, C., Mathiyalagan, R.and Yang, D. C., Silver nanoparticles from Dendropanax morbifera Léveille inhibit cell migration, induce apoptosis, and increase generation of reactive oxygen species in A549 lung cancer cells. In Vitro Cell. Develop. Biol.-Anim., 2016, 1-8. 28. Liu, N., Li, Y., Su, S., Wang, N., Wang, H. and Li, J. C., Structural investigation of ginsenoside Rf with PPAR major transcriptional factor of adipogenesis and its impact on adipocyte.

a b s t r a c tMicrobial fuel cell (MFC) has been used to treat various types of organic effluents using microbes as biocatalysts, producing electrical energy. The electrodes play a significant role in the MFC bioelectrochemical processes. The present study reports the use of carbon rods from used batteries as cathode material for textile dye degradation and decolorization. The concept of using carbon rods from used zinc carbon cell is novel and a green process of waste recycling in a MFC. Real textile dye effluent was loaded in the MFC anode. The MFC under investigation had produced a maximum power of 56.42 mW and with 90% reduction in COD over a time period of 600 h. The percent decolourization attained was 28.5%. The FESEM analysis of biofilm observed was opaque and thick sheets surrounded by a strong coat of possibly exopolysaccharide. Bio-film under optical microscopy, the microbes appeared to be isolated and bilobed. The results of this study indicate that the carbon rods from zinc carbon cell can be harvested as a MFC cathode for dye degradation and simultaneous power production.

Water is one of the most abundant and crucial components of our life system, but today most of the countries have scarcity of clean water. Water pollution is one of the serious problems in India. Poor drinking water quality contributes to 80% of the diseases in the world [WHO 1984] and 65% of endemic fluorosis in the world is a result of fluoride contamination in drinking water [Felsenfeld, Robert 1991, WHO 2002.Many water sources are unsafe for human consumption as well as for other activities, such as irrigation and industrial needs. Potable water is contaminated at many places by various pollutants, such as fluorides, nitrates, iron etc.Fluoride is widely distributed in soil, water, air, vegetation, agricultural products and sea foods. Ground water sources may contain excess fluoride where minerals like cryolites, biotites and fluoroapatite are present. This is mainly due to the dissolution of fluoride from fluoride bear-