نتایج جستجو برای: behnken
تعداد نتایج: 1578 فیلتر نتایج به سال:
Application of Box-Behnken Design and Response Surface Methodology Acid Red 18 Adsorption onto PAC (Synthesized Carrot Waste) Coated with Fe3O4 Nanoparticles from Aquatic Solution: Kinetic Isotherm Studies
This investigation attempted to study electrochemical oxidation of formaldehyde at lower concentrations. Experiments were carried out in a batch electrochemical reactor using commercially available RuO2 coated titanium and SS as anode and cathode respectively and covering a wide range in operating conditions. Further, the statistical tool Response surface methodology by Box-Behnken design was u...
Isoliquiritigenin (ILG) of licorice is a potential cancer chemopreventive agent. In this paper, response surface methodology (RSM) integrating with Box-Behnken design (BBD) was firstly employed to optimize the ILG extraction, which based on the single-factor experiments. According to analysis, the effect of extraction time and ethanol concentration on yields was significantly. The optimum value...
The response surface methodology using the Box-Behnken design was established to describe supercritical carbon dioxide assisted extraction of phyllanthin from Phyllanthus amarus Schum and Thonn leaves prior to HPLC analysis. The effects of extraction pressure, temperature, modifier concentration and extraction time on the yield of phyllanthin were investigated. By solving the regression equatio...
The chemical step in the chemoenzymatic synthesis of bioengineered heparin has been examined and optimized statistically using a response surface methodology. A four factor, two level full factorial design experiment and a three factor Box-Behnken design were carried out. The goal was to establish a method to prepare N-sulfo, N-acetyl heparosan of the desired N-acetyl content, number average mo...
Statistical designs and response surface techniques for the optimization of chromatographic systems.
This paper describes fundamentals and applications of multivariate statistical techniques for the optimization of chromatographic systems. The surface response methodologies: central composite design, Doehlert matrix and Box-Behnken design are discussed and applications of these techniques for optimization of sample preparation steps (extractions) and determination of experimental conditions fo...
چکیده زمینه و هدف: وجود رنگ در منابع آب و پساب از مشکلات زیست محیطی بسیاری از جوامع است که باید به طریقی حذف گردد. فرآیند جذب سطحی و استفاده از جاذب های ارزان قیمت یکی از روش هایی است که در سال های اخیر توجهات زیادی را به خود جلب کرده است. بنابراین هدف از انجام این مطالعه، حذف رنگ راکتیو اورنج 16 از محلول های آبی توسط ساقه آفتابگردان اصلاح شده با کلرید آمونیوم 4 گانه (c6h15cl2no) با استفاده از ...
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