scholarly journals Comparison between nano zero valent iron supporting onto activated carbon collected via two types of reagents statistically: Carbon for cationic dye removal

2021 ◽  
Vol 1853 (1) ◽  
pp. 012016
Author(s):  
A K Hammed ◽  
I K Al-Asfoor ◽  
A K Al-Dahan
Keyword(s):  
Activated Carbon ◽  
Dye Removal ◽  
Zero Valent Iron ◽  
Cationic Dye ◽  
Nano Zero Valent Iron

Dechlorination of hexachlorobenzene by nano zero-valent iron/activated carbon composite: iron loading, kinetics and pathway

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46689-46696 ◽  
Author(s):  
Wei-fang Chen ◽  
Ling Pan ◽  
Li-fang Chen ◽  
Qiong Wang ◽  
Chang-cheng Yan
Keyword(s):  
Activated Carbon ◽  
Carbon Composite ◽  
Zero Valent Iron ◽  
Iron Loading ◽  
Nano Zero Valent Iron

HCB was removed by nano ZVI/AC composite by both adsorption and dechlorination. The dechlorination was stepwise, for which a pathway is proposed.

scholarly journals Preparation of Alpinia galangaStem Based Activated Carbon via Single-step Microwave Irradiation for Cationic Dye Removal

2021 ◽  
Vol 50 (8) ◽  
pp. 2251-2269
Author(s):  
N.A. Ahammad ◽  
M.F.M. Yusop ◽  
A.T. Mohd Din ◽  
M.A. Ahmad
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Surface Area ◽  
Dye Removal ◽  
Pore Diameter ◽  
Focal Point ◽  
Radiation Power ◽  
Single Step ◽  
Bet Surface Area ◽  
Cationic Dye

The focal point of this study is to synthesis Alpinia galanga Stem-based activated carbon (AGSAC) by using single-step microwave irradiation and testing it for the removal of cationic dye, methylene blue (MB) from aqueous solution. AGSAC was prepared under the flow of carbon dioxide (CO2) for the gasification effect. The factors of contact time (from 0 to 24 h) and initial concentration (25-300 mg/L) on the adsorption performance of AGSAC were studied. With the aid of response surface methodology (RSM) via face-centered composite design (FCD), optimum preparation conditions for AGSAC were found to be 400 W for radiation power and 4 min for activation time, respectively, which resulted in 95.67% of MB dye removal. The optimized AGSAC has a Bruneaur-Emmet-Teller (BET) surface area of 172.19 m2/g, mesopore surface area of 103.32 m2/g, a total pore volume of 0.1077 cm3/g, and fixed carbon content of 47.63%. The pore diameter of AGSAC was found to be a mesoporous type with a pore diameter of 2.50 nm. Freundlich isotherm and pseudo-second-order were found as the best-fitted model for MB adsorption equilibrium and kinetic respectively onto prepared AGSAC. Intraparticle diffusion was found to be the rate-limiting step.

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