Response surface modeling of the removal of methyl orange dye from its aqueous solution using two types of zeolite synthesized from coal fly ash

2018 ◽  
Vol 8 (3) ◽  
pp. 234-244 ◽  
Author(s):  
Tahani Al-Dahri ◽  
Adnan AbdulJabbar AbdulRazak ◽  
Intisar Hussain Khalaf ◽  
Sohrab Rohani
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Methyl Orange ◽  
Response Surface ◽  
Coal Fly Ash ◽  
Surface Modeling ◽  
Response Surface Modeling ◽  
Methyl Orange Dye

Response Surface Modeling of Basic Blue 71 Removal from Aqueous Solution by N,O-Carboxymethyl-Chitosan

2012 ◽  
Vol 550-553 ◽  
pp. 2198-2204
Author(s):  
Zhen Chen ◽  
Qing Chun Chen ◽  
Yan Li
Keyword(s):  
Aqueous Solution ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Contact Time ◽  
Dye Removal ◽  
Surface Modeling ◽  
Carboxymethyl Chitosan ◽  
Response Surface Modeling ◽  
Optimum Ph ◽  
Central Composite

Abstract: N,O-carboxymethyl chitosans (N,O-CMC) were synthesized using water as a solvent. The structure of N,O-CMC is characterized by IR and XRD. N,O-CMC was used as adsorbent for the removal of basic blue 71 dye based on response surface methodology (RSM) from aqueous solution. A standard RSM design named central composite design (CCD) was employed for experimental design and analysis of the results. The combined effect of pH, contact time and temperature on the dye removal was studied and optimized using response surface modeling. The optimum pH, temperature and contact time for the process were found to be 8, 10 °C, 140 min, respectively, and the corresponding dye removal was 100%.

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