Response surface methodology (RSM) modeling of microwave-assisted transesterification of coconut oil with K/γ-Al2O3 catalyst using Box-Behnken design method

2016 ◽  
Author(s):  
Nur Hidayanti ◽  
L. Qadariyah ◽  
Mahfud Mahfud
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Design Method ◽  
Coconut Oil ◽  
Box Behnken Design ◽  
Microwave Assisted ◽  
Al2o3 Catalyst

scholarly journals Process Optimization of Microwave Assisted Simultaneous Distillation and Extraction from Siam cardamom using Response Surface Methodology

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 449
Author(s):  
Panawan Suttiarporn ◽  
Nalin Wongkattiya ◽  
Kittisak Buaban ◽  
Pisit Poolprasert ◽  
Keerati Tanruean
Keyword(s):  
Response Surface Methodology ◽  
Essential Oil ◽  
Response Surface ◽  
Leaf Sheath ◽  
Scanning Electron Micrographs ◽  
Effective Technique ◽  
Box Behnken Design ◽  
Quadratic Equations ◽  
Gram Positive Bacteria ◽  
Microwave Assisted

The main goal of the research was to optimize microwave-assisted simultaneous distillation and extraction (MA-SDE) using response surface methodology (RSM), based on Box–Behnken design (BBD). A process was designed to extract the essential oil from the leaf sheath of Siam cardamom. The experimental data were fitted to quadratic equations, and the experiment conditions for optimal extraction of 1,8-cineole were extraction time 87.68 min, material-to-water ratio 1:13.18 g/mL and microwave power 217.77 W. Under such conditions, the content of 1,8-cineole was 157.23 ± 4.23 µg/g, which matched with the predicted value. GC–MS results indicated the presence of predominant oxygenated monoterpenes including 1,8-cineole (20.63%), iso-carveol (14.30%), cis-p-mentha-1(7),8-dien-2-ol (12.27%) and trans-p-2,8-menthadien-1-ol (9.66%), and oxygenated contents were slightly higher in the MA-SDE and extraction compared to usual SDE. In addition, the essential oil extracted by MA-SDE exhibited strong antibacterial effects against the tested Gram-positive bacteria. Scanning electron micrographs provided more evidence of destruction of the leaf sheath treated by MA-SDE. Conclusively, microwave-assisted simultaneous distillation and solvent extraction appear to be an effective technique for the separation of essential oils enriched 1,8-cineole from Siam cardamom leaf sheath in a shorter time.

scholarly journals Extraction of Nanocrystals from Millet (Eleusine Coracana) Husk Waste : Optimization using Box Behnken Design Method in Response Surface Methodology (Rsm)

2021 ◽  
Author(s):  
Banza Musamba ◽  
Hilary Rutto
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Acid Concentration ◽  
Cellulose Nanocrystals ◽  
Design Method ◽  
Maximum Yield ◽  
Box Behnken Design ◽  
Sem Image ◽  
Hydrolysis Method ◽  
Swelling Capacity

Abstract Cellulose nanocrystals (CNCs) have unique and diverse applications in the various fields of developing nanomaterials. In this work, cellulose nanocrystals were extracted from millet husk residue waste using a homogenized acid hydrolysis method. The effects of the process variables namely; homogenization speed, acid concentration and acid to cellulose ratio on the yield and swelling capacity were investigated and optimized using the Box Behnken design method in response surface methodology. The cellulose and nano-cellulose obtained were characterized using transform infrared microscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The numerical optimization analysis results showed that the maximum yield of CNCs from cellulose was 93.12 % and obtained at homogenization speed, acid concentration, and acid to cellulose ratio of 7464.0 rpm, 63.40 wt %, and 18.83 wt % respectively. The maximum swelling capacity of 2.81 % was obtained at homogenization speed, acid concentration, and acid to cellulose ratio of 8000 rpm, 62.5 wt %, and 25 wt % respectively. A mathematical model was obtained to predict the yield and the swelling capacity of cellulose nanocrystals with R2 of the value of 98.9 % and 97.9% respectively. The TGA showed that the thermal stability of cellulose was higher than that of CNCs, FTIR results showed functional groups of CNCs and cellulose were similar, SEM image of CNCs is porous and displayed narrow particle size and needle-like morphology as compared to cellulose and XRD pattern presented an increase in the intensity of CNCs.

Optimisation of the Oil Extraction from Nigella sativa Seeds Using Response Surface Methodology

2017 ◽  
Vol 68 (2) ◽  
pp. 331-336
Author(s):  
Gabriela Isopencu ◽  
Mirela Marfa ◽  
Iuliana Jipa ◽  
Marta Stroescu ◽  
Anicuta Stoica Guzun ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Nigella Sativa ◽  
Polynomial Equation ◽  
Herbaceous Plant ◽  
Box Behnken Design ◽  
Pareto Analysis ◽  
Black Cumin ◽  
Mediterranean Countries ◽  
Experimental Values

Nigella sativa, also known as black cumin, an annual herbaceous plant growing especially in Mediterranean countries, has recently gained considerable interest not only for its use as spice and condiment but also for its healthy properties of the fixed and essential oil and its potential as a biofuel. Nigella sativa seeds fixed oil, due to its high content in linoleic acid followed by oleic and palmitic acid, could be beneficial to human health. The objective of this study is to determine the optimum conditions for the solvent extraction of Nigella sativa seeds fixed oil using a three-level, three-factor Box-Behnken design (BBD) under response surface methodology (RSM). The obtained experimental data, fitted by a second-order polynomial equation were analysed by Pareto analysis of variance (ANOVA). From a total of 10 coefficients of the statistical model only 5 are important. The obtained experimental values agreed with the predicted ones.

Application of response surface methodology for optimizing transesterification of coconut oil

2017 ◽  
Vol 05 ◽  
pp. 101 ◽  
Author(s):  
Dat, N.V. ◽  
Thanh, N.Q.C. ◽  
Men, L.T. ◽  
Thao, D.N.T. ◽  
Phuong, T.H. ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Coconut Oil
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