Removal of Cu (II) ion from aqueous solutions by Rice Husk Carbon-Chitosan Composite gel (CCRH) using response surface methodology

2018 ◽  
Vol 10 ◽  
pp. 189-198 ◽  
Author(s):  
Manish Masih ◽  
Prashant Anthony ◽  
Shaziya H. Siddiqui
Keyword(s):  
Response Surface Methodology ◽  
Aqueous Solutions ◽  
Response Surface ◽  
Rice Husk ◽  
Composite Gel ◽  
Rice Husk Carbon ◽  
Chitosan Composite

Process optimization using response surface methodology for the removal of thorium from aqueous solutions using rice-husk

Chemosphere ◽  
2019 ◽  
Vol 237 ◽  
pp. 124488 ◽  
Author(s):  
Sayanasri Varala ◽  
Vivek Ravisankar ◽  
Maha Al-Ali ◽  
Mark I. Pownceby ◽  
Rajarathinam Parthasarathy ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Aqueous Solutions ◽  
Response Surface ◽  
Process Optimization ◽  
Rice Husk

Optimization of Production Conditions for Activated Carbons from Rice Husk by Potassium Carbonate Using Response Surface Methodology

2014 ◽  
Vol 1053 ◽  
pp. 303-310 ◽  
Author(s):  
Mian Wu Meng ◽  
Cong Liang Qi ◽  
Qing Ye Liu ◽  
Liang Lv ◽  
Hao Ai ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Adsorption Capacity ◽  
Response Surface ◽  
Rice Husk ◽  
Activated Carbons ◽  
Total Pore Volume ◽  
Nitrogen Adsorption ◽  
Average Pore ◽  
Activation Temperature ◽  
Nitrogen Adsorption Isotherm

A three-factor-three-level experiment was developed by the central composite design (CCD) and Response surface methodology to discuss the effects of concentration of K2CO3, activation temperature and time on the adsorption capacity of the activated carbon (AC) derived from the rice husk and to identify the key preparation parameters. The performance of the AC was characterized by nitrogen adsorption isotherm as Brunauer–Emmett–Teller (BET) and scanning electron microscope (SEM), respectively. The optimal parameters were obtained: Rice husk was soaked in K2CO3 solution (2.32 mol/L) with an impregnation ratio (rice husk: K2CO3=1:3) (wt. %), activated at 1239 K for 0.48 h. The results showed that iodine adsorption capacity of the AC was 1268.52 mg/g, the error between the models predicted (1356.98 mg/g) was only 6.2%. The AC has a large apparent surface area (SBET = 1312 m2/g), total pore volume (0.78 cm3/g) and average pore diameter (11.92 Å).

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