National Institute of Technology, Karnataka

About: National Institute of Technology, Karnataka is a education organization based out in Mangalore, Karnataka, India. It is known for research contribution in the topics: Computer science & Corrosion. The organization has 5017 authors who have published 7057 publications receiving 70367 citations.

Power Control of PV/Fuel Cell/Supercapacitor Hybrid System for Stand-Alone Applications

Abstract: This paper presents modeling and control of Photovoltaic/fuel cell/supercapacitor hybrid power system for stand-alone applications. The hybrid power system uses solar PV array and fuel cell as the main sources. These sources share their power effectively to meet the load demand. The supercapacitor bank is used to supply or absorb load transients. The main control system comprises of MPPT controller for PV system, a DC-DC boost converter with controller for fuel cell system for power management and inverter controller to regulate voltage and frequency. The stand-alone hybrid system aims to provide quality supply to consumers with a constant voltage and frequency. The modeling and control strategies of the hybrid system are realized in Matlab/Simulink.

Screening and selection of indigenous metal tolerant fungal isolates for heavy metal removal.

Abstract: Heavy metal removal efficiency of indigenously present metal tolerant fungal isolates obtained from a scrap dumpsite was assessed in this study. Four fungal isolates were selected based on their ability to grow in multi-metal supplemented media. Minimum inhibition concentrations of these four isolates were determined against individual metals; lead (II) (50–400 mgL−1), cadmium (II) (50–400 mgL−1), arsenic (III) (10–100 mgL−1) and mercury (II) (10–100 mgL−1). Their ability to remove metals from synthetic aqueous medium was tested and the heavy metal–fungi combination which showed the highest removal efficiency was selected. Live biomass of the selected isolate dispensed in lead solution with concentrations of 50 mgL−1, 100 mgL−1 and 150 mgL−1 showed a removal of 92.27%, 92.73% and 89.36% respectively at the end of the 40th h. Scanning Electron Microscopy with Electron Dispersive X-ray (SEM-EDX) of the treated biomass confirmed the biosorptive ability of the isolate for lead when compared with the control biomass. Fourier Transforms Infra-red (FTIR) Spectroscopy showed the probable involvement of amide, carboxylic acid, hydroxyl and isocyanate groups in the adsorption of lead from the synthetic metal solution.