Foam drainage enhancement in foam fractionation for dye removal: process optimization by Taguchi methodology and grey relational analysis

The isolation of dye (methylene blue) by employing a foam fractionation technique with the assistance of a surfactant (sodium dodecyl sulfate) has been dealt with in this paper. This study also incorporated the comparison between contrasted and experimental columns. Taguchi methodology and grey relational analysis techniques were used to ascertain optimal conditions at which the column should be operated to achieve maximum percentage removal and enrichment ratio, for both the columns. The analysis of variance study suggested dye concentration to be the most influencing parameter. The relationship between dye concentration in the bulk phase and the foam phase was also deduced.

Formulation of a Functional Lactic Drink Enriched with Different Proportions of Quinoa (Chenopodium Quinoa)

The present research work is to propose, formulate an optimal functional drink and reduce the impact generated by the cheese industries. Different formulations enriched with quinoa were evaluated and thus be able to characterize it as sensorial acceptable. The Taguchi methodology was used in the formulation process, which allowed us to work with three control factors: serum (LC), water (AG), and quinoa flour (HQ), with two levels of work and four experimental runs. The four formulations were F1 (LC (50%), AG (30%) and HQ (5%)), F2 (LC (50%), AG (40%) and HQ (10%)); F3 (LC (60%), AG (30%) and HQ (10%)) and F4 (LC (60%), AG (40%) and HQ (5%)). A sensory acceptability (AS) analysis determined by taste, color, and the smell was performed. The best formulation was F3 with an AS (4.46) equivalent to the "moderately similar" signal/noise ratio (12,987).

Thicknesses/Roughness Relationship in Mg-Al-Mg and Mg-Ti-Mg Hybrid Component Plates for Drilled Aeronautical Lightweight Parts

Multimaterial hybrid compounds formed from lightweight structural materials have been acquiring great importance in recent years in the aeronautical and automotive sectors, where they are replacing traditional materials to reduce the mass of vehicles; this will enable either an increase in the action ratio or a reduction in the fuel consumption of vehicles and, in short, will lead to savings in transport costs and a reduction in polluting emissions. Besides, the implementation of production and consumption models based on the circular economy is becoming more and more important, where the repair and, for this purpose, the use of recyclable materials, is crucial. In this context, the analysis of a repair process is carried out by re-drilling Mg-Al-Mg multimaterial components using experimental design (DoE) based on Taguchi methodology, an analysis of variance (ANOVA) and descriptive statistics. The study concludes which are the significant factors and interactions of the process, comparing the results with previous similar studies, and establishing bases to determine the optimum thicknesses of hybrid magnesium-based component plates of drilled parts in the aeronautical industry, guaranteeing surface roughness requirements in repair and maintenance operations throughout their lifetime.

Optimization of Biodiesel (Rubber Seed Oil) Process Parameters using Taguchi Method Based on Experimental Procedure in A Batch Stirred Tank Reactor

Due to the increase in the demand for an alternate fuel the research studies towards searching for a low cost source and optimum conditions with new reactors were gaining momentum. Hence the present investigation is focused on the design of a batch stirred tank reactor with two different impellers to produce biodiesel with the use of rubber seed oil. Further an experiment was conducted in optimizing the process parameters using Taguchi methodology. The Taguchi methodology is mainly focused on the enhancement of the product produced and this is the most precise method used. The best combinations were obtained through the L9 orthogonal array. The reactor specifications were fixed to be 7.5cm. height, 7.5cm diameter, 2.5 cm agitator diameter, 0.625cm baffle thickness with 2.5cm as distance between bottom of the tank and impeller. Two impellers with 0.5cm. Width, 0.625cm length and others with 1.1cm length were used to test the individual performance towards yield. The optimum conditions obtained were found to be Impeller typeStraight blade impeller, Temperature- 65ºC, Time - 45min, Reactant ratio - 1:6, Catalyst amount- 22.46% (mol% of Oil), and Impeller Speed- 500rpm with the yield of 88 % . Hence BSTR reactors could be scaled up for translational research studies too.