Shiva kumar D,

Abstract: The Mysore city is second largest growing city in Karnataka state, India. In recent days industrialization is growing in very faster rate than any other activities. Due to industrialization, the pollution load for water, air and soil has increasing day by day. To find out the heavymetal pollution from the industries which they have adopted for their production purposes we carried out the research work by dissolving the extracted soil sample in tri acid mixture method. In the present study it reveals that the heavymetals concentration is at the nearby maximum level. The results shows that iron level ranges from 2.5gm/kg to 6.7gm/kg, copper varies from 6.8mg/kg to 20.3mg/kg, chromium occur in range of 6.6mg/kg to 22.0mg/kg, whereas zinc found in range of 66mg/kg to 121 mg/kg and nickel was found in a range of 10mg/kg to 18.1mg/kg

Photocatalytic dye degradation and biological activities of the Fe2O3/Cu2O nanocomposite

The present study reports the synthesis of the Fe2O3/Cu2O nanocomposite via a facile hydrothermal route. The products were characterized using X-ray diffractometry (XRD), Fourier-transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), high-resolution transmission electron microscopy (HR-TEM), energy dispersive spectroscopy (EDS) and Brunauer–Emmett–Teller (BET) techniques. The composition, morphology and structural features of the nanoparticles were found to be size-dependent due to the temperature response in the particular time log during hydrothermal synthesis. HR-TEM confirmed the formation of hexagonal rod-shaped bare Cu2O, rhombohedral-shaped Fe2O3 and composite assembly. Rhodamine-B (RB) and Janus green (JG) were chosen as model dyes for the degradation studies. Photocatalytic degradation of the dyes was deliberated by altering the catalyst and dye concentrations. The results showed that the Rhodamine-B (RB) and Janus green (JG) dyes were degraded within a short time span. The synthesized materials were found to be highly stable in the visible light-driven degradation of the dyes; showed antibacterial activity against E. coli, P. aeruginosa, Staph. aureus and B. subtilis; and exhibited less toxicity against the Musmusculus skin melanoma cells (B16-F10). The fusion of these advantages paves the way for further applications in energy conversion, biological applications as well as in environmental remediation

Assessment of air quality in Bidadi industrial area, Ramanagaram district, Karnataka, India

With an increased pace of industrialization especially in developing countries, environmental problems have also increased. At the same time, with growing population and economic development, there has been a rapid rise in air pollution sources. Due to this, a number of pollutants are released in the ambient air deteriorating its quality. The health effects caused by air pollution may include difficulty in breathing, wheezing, coughing and aggravation of existing respiratory and cardiac conditions. The ambient air quality of eight selected stations in and around Bidadi industrial area was monitored every fortnight, on an 8 hourly basis in different seasons of the year. Air quality was assayed with respect to the concentration of SPM, SO2 and NOx and the parameters were correlated. The results reveal that the value of SO2 and NOx are within permissible limits in all observed stations, whereas the value of SPM is high in all the stations. Annual Air Quality Indix (AQIs) of selected stations of Bidadi industrial area for the representative year 2012 was calculated to evaluate the level of atmospheric pollution

Statistical multivariate analysis in the assessment of river water quality in the vicinity of KRS Dam, Karnataka, India

Surface water quality assessment is a basic and critical tool for informing sustainable management of water resources. The aim of this study is to evaluate the reservoir and river water quality of the Cauvery River in the vicinity of the Krishna Raja Sagar Dam, Karnataka, India. The results will assist water management in the study area for varied future demands including, irrigation, industries, and river conservation. Ecologically important parameters such as dissolved oxygen, chemical oxygen demand, biochemical oxygen demand, and physico-chemical parameters were analyzed. The results were compared with standard permissible limits. The differences in various parameters were statistically significant (P < 0.01) when comparing the upstream and downstream stretches of the river, particularly in summer. To identify a good technique for water quality assessment, all of the water quality parameters have been calculated by correlating various parameters and comparing them over two critical dry seasons. The dendrogram of the water-quality parameters clearly indicate that river water is safe for drinking, fishing, irrigation, and industrial purposes