Giant radio galaxies (GRGs) are one of the largest astrophysical sources in the Universe with an overall projected linear size of ∼0.7 Mpc or more. The last six decades of radio astronomy research has led to the detection of thousands of radio galaxies. However, only ∼300 of them can be classified as GRGs. The reasons behind their large size and rarity are unknown. We carried out a systematic search for these radio giants and found a large sample of GRGs.
In the present investigation photocatalytic degradation of an antibiotic rifabutin in aqueous solution with TiO2 as photocatalyst has been investigated under UV irradiation. The efficiency of degradation was quantified by several parameters such as effect of initial concentration, catalyst loading, pH and addition of H2O2 as a co-oxidant. The effect of operational parameters on the decolourisation and degradation under UV irradiation in TiO2 suspension has been investigated to find out the optimum conditions.