Nowadays in highly competitive precision industries, the micromachining of advanced engineering materials is extremely demand as it has extensive application in the fields of automobile, electronic, biomedical and aerospace engineering. The present work addresses the modeling and optimization study on dimensional deviations of square-shaped microgroove in laser micromachining of aluminum oxide ...

Biological treatment, especially enzymatic methods, can be employed for effective and environmental- friendly treatment of dye effluents. Laccase, belonging to the blue multi-copper oxidases category, can oxidize a wide variety of substrates, especially synthetic dyes. In this study, laccase was used to biodegrade two azo dyes, i.e., Direct Red 23 and Acid Blue 92. Before conducting the exp...

This paper describes optimization method that combines the Plackett-Burman design, a factorial design and the response surface method, which were used to optimize the medium for the production of L-asparaginase by Serratia marcescens SB08. Four medium factors, from out of 11 medium factors, were screened by Plackett-Burman design experiments and subsequent optimization process to find out the o...

In the present work, attempts have been made to optimize EDM process with an aspect of surface modification AISI P20+Ni die steel using powder metallurgy (P/M) electrode. Experiments performed according central composite rotatable (CCD) design response methodology (RSM). Effects compaction pressure (Cp), peak current (Ip), pulse-on time (Ton), and duty cycle (τ) were correlated roughness (SR) m...

The present study investigated the degradation of levonorgestrel (LNG) and gestodene (GES) through an anodic oxidation process mediated by active chlorine species. independent variables [LNG]0 [GES]0, current density (mA cm?2), [NaCl]0 (mol L?1) were optimized a response surface methodology (RSM) based on four-level central composite design (CCD). Specific energy consumption allowed CCD-RSM ana...

Background: Heavy metals in aquatic systems usually interfere with many beneficial uses of water. Divalent nickel is a commonly occurring toxic metal in natural ecosystems due to the effluent of refineries, electroplating, and casting industries. In aquatic environments, nickel appears as Ni (II) and Ni0. Despite the high reported toxicity for Ni (II), Ni0 is only slightly toxic. Various meth...

Response surface methodology (RSM) was adopted for the optimization of process variables in the alkaline peroxide oxidation (APO) pretreatment of Vitellaria paradoxa sawdust based on central composite design (CCD) experiments. A 2 five level CCD with central and axial points was used to develop a statistical model for the optimization of process variables. Maximum response for the pretreatment ...

Surface roughness is one of the most significant factors to indicate product quality. Diamond turning an efficient and highly accurate material removal process improve surface quality workpiece. In present study, arithmetic mean absolute (Ra) total height profile (Rt) spherical during finish a commercial brass alloy CuZn40Pb2 were modeled using Response Methodology (RSM). The experimental inves...