Application of response surface methodology (RSM) to optimize COD and ammoniacal nitrogen removal from leachate using moringa and zeolite mixtures

Numerical Study of a Left Ventricular Assist Device (LVAD) With Different Blade Heights and Tip Clearances

“…There are several ways of obtaining an optimized model configuration out of almost infinite variations such as using Taguchi Method [24], Response Surface Method [25,26], ranked selection method [27,28]. In this study, screening and scoring method is used.…”

Optimization of Batch Conditions for COD and Ammonia Nitrogen Removal Using cockle shells Through Response Surface Methodology

“…The ranges for variable selection were 4-56 g/L for dosage and 4-8 for pH. To attain the optimum dosage and pH, two dependent variables were investigated as responses, namely, COD and NH 3 -N. The quadratic equation model for predicting the optimum conditions can be expressed according to Equation (2):where i represents the linear coefficient, j the quadratic coefficient, as the coefficient of regression, k is for the quantity of factors investigated and optimized by the experiment while e stands for the random error [25]. Analysis of variance (ANOVA) was incorporated in graphical analyses of the obtained data to determine the interactions between the system variables and their responses.…”

“…Positivity and negativity imply favorable and unfavorable interactions, respectively, in the remediation [17]. The occurrence of a single factor signifies a singular effect, the presence of two variables is indicative of a paired effect, and the occurrence of a second-order expression symbolizes quadratic influence [25].…”

Ammoniacal Nitrogen Removal Using flamboyant pods (Delonix Regia) Adsorbent for Natural Rubber Wastewater Treatment

“…Advanced oxidation approach are economically expensive and can have problems of chlorine oxidation. Other types of treatments such as ozonation [1][2][3], coagulationflocculation [4] also have been used in investigations but have economic cost. Generally, many methods have been applied for the treatment of wastewater and adsorption remained the most preferred because of the ease in operation as well as its global application.…”