In this study, biosorption of cadmium by Cystoseria myricaas as brown algae was investigated. Heavy metals, such as cadmium Cd (II), which are often present in industrial wastewaters, are dangerous to the aquatic ecosystem and pose a risk to human health as well. The experiment was conducted under conditions of varying pH, temperature, sorbent dosage, metal concentration, and contact time. The number of experiments was calculated by software Minitab. The design package Minitab software, a statistical program package, was used for regression analysis of the data obtained and estimation of the coefficient of the regression equation. The optimum condition was calculated by response surface methodology (RSM). The optimum conditions for removal of cadmium ion were obtained by theoretical equations. The response surfaces plots and contour plots were drawn using MATLAB.
A simple, highly efficient and green procedure for the condensation of aryl and alkyl 1,2-diamines with α-diketones in the presence of catalytic amounts of metalloporphyrins at room temperature is described. Using this method, quinoxaline derivatives as biologically interesting compounds are produced in high to excellent yields and short reaction times. In this report, the effects of central metal in porphyrin core and substituents on tetraphenylporphyrin skeleton have been studied.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.