The objective of this study was to examine the performance of mixed microalgal bioreactors in treating three different types of wastewaters-kitchen wastewater (KWW), palm oil mill effluent (POME), and pharmaceutical wastewater (PWW) in semi-continuous mode and to analyze the lipid content in the harvested algal biomass. The reactors were monitored for total nitrogen and phosphate removal at eight solid retention times (SRTs): 2, 4, 6, 8, 10, 12, 14, and 16 days. The nutrient uptake kinetic parameters were quantified using linearized Michaelis-Menten and Monod models at steady-state conditions. The nutrient removal efficiency and lipid production were found to be higher in KWW when compared with the other wastewaters. Saturated fatty acids (C16:0, C18:0, and C18:1) accounted for more than 60% of the algal fatty acids for all the wastewaters. The lipid is, therefore, considered suitable for synthesizing biodiesel.

Commonly available Indian foods containing rich sources of macronutrients (Ca and Mg) and trace elements (Fe and Zn). Dietary intake of these foods will reduce the diseases like prematurity, Rickets, Renal disease, Anemia, Hyperkalemia, Anuria, Tissue damage etc,. The aim of the present work is to determine the amount and percentage of macronutrients Calcium, Magnesium and trace elements Iron, Zinc in various food samples. The results showed that cashew nut, ground nut and spinach contains maximum amount of Calcium, Magnesium, Iron and Zinc in the range of 0.031 gL -1 , 0.091 gL -1 , 0.2458 gL -1 and 0.0408 gL -1 respectively, it measured from more than fifteen different types of juices extracted from common edible locally available foods in and around Tholayavattam area Kanyakumari district, Tamilnadu, India.