The commercial inulinase obtained from Aspergillus niger was non-covalently immobilized on multiwalled carbon nanotubes (MWNT-COOH). The immobilization conditions for the carbon nanotubes were defined by the central composite rotational design (CCRD). The effects of enzyme concentration (0.8%-1.7% v/v) and adsorbent:adsorbate ratio (1:460-1:175) on the enzyme immobilization were studied. The ad...

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 tarwi is an Andean legume with a high nutritional value from which vegetable beverage can be obtained. Cereals, like oat, have good characteristics as prebiotic for the production of functional drinks, whose consumption currently increasing. objective research was to design probiotic fermented based on fresh milk, beverage, and oatmeal. An optimal treatment consisted 1.9% oatmeal, 39.9% 46....

Optimization of active edible coating formulations for pork meat application was conducted using response surface methodology. Effects (i.e. cassava starch, glycerol, and lactic acid) on the color change, pH, % drip loss, interaction (thickness), sensory acceptability (general acceptability, color, odor, texture) coated samples stored at ambient temperature were investigated a three- block rota...

Abstract Environmental pollution with mining waste containing dangerous metal cations necessitates the development of technologies for their disposal. This study proposes use blast furnace slag as a geobarrier binding heavy cations. Such parameters mass, temperature and time were used to determine degree ferum zinc when they are present together. A central rotatable composite experimental desig...

USING CENTRAL COMPOSITE EXPERIMENTAL DESIGN TO OPTIMIZE THE DEGRADATION OF REAL DYE WASTEWATER BY FENTON AND PHOTO-FENTON REACTIONS Francesc Torrades* and Julia García-Montaño (1) Departament d’Enginyeria Química, ETSEIA de Terrassa, Universitat Politècnica de Catalunya, C/Colom 11, E-08222, Terrassa (Barcelona) Spain. (2) LEITAT Technological Center, Environment R&D Department, C/Innovació, 2,...

Austenitic stainless steel sheets have gained wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industries. In the case of single pass welding of thinner sections of this alloy, Pulsed Current Micro Plasma Arc Welding (PCMPAW) has been found bene...

gelatin is a protein hydrocolloid. because of its unique characteristics such as gel forming, thickening, stabilizing, emulsifiing, foam and film forming, is widely used in food industries. in this research, in order to optimize the factors which affect enzymatic extraction method of gelatin ,the effects of three variables, enzyme concentrations(2-10 ppm), time(8-16 hours) and temperature(60-80...

austenitic stainless steel sheets have gained wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industries. in the case of single pass welding of thinner sections of this alloy, pulsed current micro plasma arc welding (pcmpaw) has been found bene...