Taguchi optimization approach for Pb(II) and Hg(II) removal from aqueous solutions using modified mesoporous carbon

Mesoporous carbon nitride functionalized with melamine-based dendrimer amine has been developed. It has been characterized using N 2 adsorption-desorption isotherm, thermogravimetric analysis, Fourier transform spectroscopy and small-angle X-ray scattering techniques. The pore diameter is centered at 4.74 nm with a relatively high BET surface area of 102.2 m 2 /g with a pore volume of 0.12 cm 3 /g. Thermogravimetric analysis curves show that the samples (mesoporous carbon nitride and mesoporous carbon nitride functionalized with melamine-based dendrimer amine) have high thermal stability compared to the earlier species. Batch adsorption experiments were conducted to study the effect of adsorbent dose, temperature, contact time and solution pH for the removal of Pb(II) from aqueous systems. The Pb(II) and Cu(II) removal by mesoporous carbon nitride functionalized with melaminebased dendrimer amine was found to be 196.34 and 199.75 mg/g, respectively. The sorption data are correlated better with the Langmuir adsorption isotherm than Freundlich isotherm. The kinetic analysis has revealed that the overall adsorption process is successfully fitted in the pseudo-second-order kinetic model.

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“…and Cu 2? (Zolfaghari et al 2011). For example, copper ion speciation is affected by solution pH through the following equilibrium:…”

Section: Effect Of Phmentioning

confidence: 99%

Adsorption studies of Pb(II) and Cu(II) ions on mesoporous carbon nitride functionalized with melamine-based dendrimer amine

Anbia

Haqshenas

2015

Int. J. Environ. Sci. Technol.

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“…Usually, three different equations of S/N ratio were used depending on performance characteristics. These are, lower is better, nominal is best and higher is better (Roy, 1995;Atil and Unver, 2000;Zolfaghari et al, 2011). The aim of this study was to provide maximum metal extraction, "higher is better" which given in Equation (1) was used, (1) where n is the number of repetitions of the experiments and EoMi (the extraction of metal) is the result of the experiment.…”

Section: Taguchi Methods and Optimization Studiesmentioning

confidence: 99%

“…Therefore, optimization of leaching parameters is very important. Taguchi method is widely used in optimization studies, both leaching studies and other scientific fields (Bese et al, 2010;Abali et al, 2006;Demir and Donmez, 2008;Babaei-Dehkordi et al, 2013;Asl et al, 2015;Dogan and Yartasi, 2014;Copur, 2002;Abali et al, 2011;Moghaddam et al, 2006;Ata et al, 2001;Safarzadeh et al, 2008;Ilyas et al, 2010;Zolfaghari et al, 2011). One of the advantages of Taguchi method is to keep costs to a minimum level compared to conventional experimental design methods and closer performance to the desired level.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Nickel Extraction From Lateritic Ore in Hydrochloric Acid Solution With Hydrogen Peroxide by Taguchi Method

Aras¹,

Agacayak²

2017

Scitech

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Taguchi optimization method was used to determine optimum conditions for the extraction of nickel from lateritic ore in hydrochloric acid solution with hydrogen peroxide. Leaching time, stirring speed, temperature, hydrochloric acid concentration and hydrogen peroxide concentration were chosen as parameters. The optimum conditions for dissolution w ere found as leaching time of 240 min, a temperature of 70°C, hydrochloric acid concentration of 3 M, hydrogen peroxide concentration of 0.1 M and without stirring. The experimental results under optimum leaching conditions, showed that the extraction of nickel from lateritic ore was 90.66%. Analysis of variance (ANOVA) was applied to experimental results. Percentage contributions of each factor for the extraction of nickel were determined. Key Words: Leaching, Lateritic ore, Nickel; Hydrochloric acid, Hydrogen peroxide; Taguchi method Nikelin Lateritik Cevherden Hidrojen Peroksitli Hidroklorik Asit Çözeltisinde ÇözündürülmesininTaguchi Yöntemiyle Optimizasyonu ÖZ: Nikelin lateritik cevherden hidrojen peroksitli hidroklorik asit çözeltisinde çözündürülmesinin optimum koşullarını belirlemek için Taguchi optimizasyon yöntemi kullanılmıştır. Deney parametreleri olarak, süre, karıştırma hızı, sıcaklık, hidroklorik asit derişimi ve hidrojen peroksit derişimi seçilmiştir. Çözündürme için optimum koşullar, karıştırma yapılmadan, 240 dakika liç süresi, 70 °C sıcaklık, 3 M hidroklorik asit derişimi ve 0.1 M hidrojen peroksit derişimi olarak bulunmuştur. Optimum koşullarda yapılan deney sonuçları, nikelin lateritik cevherden çözündürülmesinin %90.66 olduğunu göstermiştir. Deney sonuçlarına varyans analizi (ANOVA) uygulanmış ve her faktörün nikel çözündürülmesine olan katkısı belirlenmiştir.

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“…Zolfaghari et al [46] presented a systematic optimization approach by using the Taguchi method for removal of lead (Pb) and mercury (Hg) by a nanostructure, zinc oxide-modified mesoporous carbon CMK-3 denoted as Zn-OCMK-3. CMK-3 was synthesized by using SBA-15 and then oxidized by nitric acid.…”

Section: Nominal the Bettermentioning

confidence: 99%

Application of Taguchi-Based Design of Experiments for Industrial Chemical Processes

Davis¹,

John²

2018

Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes

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Design of experiment is the method, which is used at a very large scale to study the experimentations of industrial processes. It is a statically approach where we develop the mathematical models through experimental trial runs to predict the possible output on the basis of the given input data or parameters. The aim of this chapter is to stimulate the engineering community to apply Taguchi technique to experimentation, the design of experiments, and to tackle quality problems in industrial chemical processes that they deal with. Based on years of research and applications, Dr. G. Taguchi has standardized the methods for each of these DOE application steps. Thus, DOE using Taguchi approach has become a much more attractive tool to practicing engineers and scientists.And since the last four decades, there were limitations when conventional experimental design techniques were applied to industrial experimentation. And Taguchi, also known as orthogonal array design, adds a new dimension to conventional experimental design. Taguchi method is a broadly accepted method of DOE, which has proven in producing high-quality products at subsequently low cost.

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Taguchi optimization approach for Pb(II) and Hg(II) removal from aqueous solutions using modified mesoporous carbon

Cited by 164 publications

References 41 publications

Adsorption studies of Pb(II) and Cu(II) ions on mesoporous carbon nitride functionalized with melamine-based dendrimer amine

Adsorption studies of Pb(II) and Cu(II) ions on mesoporous carbon nitride functionalized with melamine-based dendrimer amine

Optimization of Nickel Extraction From Lateritic Ore in Hydrochloric Acid Solution With Hydrogen Peroxide by Taguchi Method

Application of Taguchi-Based Design of Experiments for Industrial Chemical Processes

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