Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi-Walled Carbon Nanotubes

2018 ◽  
Vol 41 (9) ◽  
pp. 1857-1870 ◽  
Author(s):  
Maliheh Raji ◽  
Hossein Abolghasemi ◽  
Jaber Safdari ◽  
Ali Kargari
Keyword(s):  
Carbon Nanotubes ◽  
Response Surface ◽  
Liquid Membrane ◽  
Emulsion Liquid Membrane ◽  
Response Surface Optimization ◽  
Multi Walled Carbon Nanotubes ◽  
Surface Optimization ◽  
Walled Carbon Nanotubes

Modeling of Concrete Composite Induced by Multi-Walled Carbon Nanotubes Using Response Surface Methodology

2015 ◽  
Vol 17 ◽  
pp. 8-13 ◽  
Author(s):  
R.S. Rimal Isaac ◽  
S. Subin ◽  
P. Prakash ◽  
P.K. Praseetha
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Response Surface ◽  
Strength Test ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Response Surface Optimization ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this present work a response surface optimization was done to study the effect of the variables curing days, Multi-Walled Carbon Nanotube (MWCNT) and plasticizer on the strength of concrete. The variables were varied in three levels and a total of 15 cylindrical specimens were fabricated based on the experimental design. For measuring the effect of the variables, split tensile strength test was carried out on the specimens. For proper mixing of the MWCNT, sonication is carried out with plasticizer and then this mixture is added with water and the specimens are fabricated. Only the terms with p < 0.05 are chosen as significant. The results shows that an increase in MWCNT %, increased the split tensile strength of the concrete.

scholarly journals Optimization of sulfate removal from wastewater using magnetic multi-walled carbon nanotubes by response surface methodology

2017 ◽  
Vol 76 (10) ◽  
pp. 2593-2602 ◽  
Author(s):  
Vahid Alimohammadi ◽  
Mehdi Sedighi ◽  
Ehsan Jabbari
Keyword(s):  
Carbon Nanotubes ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Polynomial Equation ◽  
X Ray Diffraction ◽  
Adsorption Models ◽  
Sulfate Removal ◽  
Transmission Electron ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Abstract This paper reports a facile method for removal of sulfate from wastewater by magnetic multi-walled carbon nanotubes (MMWCNTs). Multi-walled carbon nanotubes and MMWCNTs were characterized by X-ray diffraction, Raman, transmission electron microscopy, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The results of the analysis indicated that MMWCNTs were synthesized successfully. The MMWCNTs can be easily manipulated in a magnetic field for the desired separation, leading to the removal of sulfate from wastewater. Response surface methodology (RSM) coupled with central composite design was applied to evaluate the effects of D/C (adsorbent dosage per initial concentration of pollutant (mgadsorbent/(mg/l)initial)) and pH on sulfate removal (%). Using RSM methodology, a quadratic polynomial equation was obtained, for removal of sulfate, by multiple regression analysis. The optimum combination for maximum sulfate removal of 93.28% was pH = 5.96 and D/C = 24.35. The experimental data were evaluated by the Langmuir and Freundlich adsorption models. The adsorption capacity of sulfate in the studied concentration range was 56.94 (mg/g). It was found out that the MMWCNTs could be considered as a promising adsorbent for the removal of sulfate from wastewater.

Catalase immobilization onto magnetic multi-walled carbon nanotubes: optimization of crucial parameters using response surface methodology

2019 ◽  
Vol 43 (2) ◽  
pp. 593-600 ◽  
Author(s):  
Hossain-Ali Rafiee-Pour ◽  
Mahboubeh Nejadhosseinian ◽  
Masoumeh Firouzi ◽  
Saeed Masoum
Keyword(s):  
Carbon Nanotubes ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this study catalase (CAT) immobilization onto magnetic multi-walled carbon nanotubes (mMWCNTs) was undertaken and response surface methodology (RSM) employed to determine the optimum immobilization conditions.

Adsorption of p -Cresol on Al 2 O 3 coated multi-walled carbon nanotubes: Response surface methodology and isotherm study

2018 ◽  
Vol 57 ◽  
pp. 396-404 ◽  
Author(s):  
Jalil Jaafari ◽  
Mohammad Ghanbari Ghozikali ◽  
Ali Azari ◽  
Mohammad Bagher Delkhosh ◽  
Allah Bakhsh Javid ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Isotherm Study ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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