Evaluation and comparison of enrichment efficiency of physical/chemical activations and functionalized activated carbons derived from fluid petroleum coke for environmental applications

Rambabu, N.; Azargohar, Ramin; Dalai, Ajay K.; Adjaye, John

doi:10.1016/j.fuproc.2012.09.019

Cited by 84 publications

(49 citation statements)

References 37 publications

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“…Furthermore, the spectra of all samples have several other bands, which may be ascribed to the aromatic ring CC stretching vibration (1545−1570 cm −1 ) and out-of-plane vibration of aromatic C−H groups (700−900 cm −1 ). 23 At the same time, a peak at 1715 cm −1 and a weak small peak at 1628−1633 cm −1 for Fe/ NAC-500 are observed. The former corresponds to the CO stretching vibrations of carbonyl groups in ketone, 24 indicating that the carbon surface can form carbonyl groups when the calcination temperature is at 500°C, and the latter is due to the CO stretching of carboxyl groups in carboxylic acid and aliphatic acid.…”

Section: Methodsmentioning

confidence: 84%

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃

Guo

Liu²,

Luo³

et al. 2015

Ind. Eng. Chem. Res.

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Fe supported on activated carbons treated by HNO 3 (Fe/NAC) was prepared using the incipient wetness method with ultrasonic-assisted oscillation and calcined at different temperatures. The physical and chemical properties were studied using FTIR, XPS, XRD and H 2 -TPR, and SO 2 removal ability of Fe/NAC was also evaluated at a fixed bed. The results showed that α-Fe 2 O 3 and small Fe 3 O 4 coexist in Fe/NAC-500, while catalysts calcined at 700°C only possess Fe 3 O 4 . Fe 3 O 4 with small Fe 2 SiO 4 is observed for Fe/NAC-900, but Fe 2 SiO 4 and Fe 0 are detected in Fe/NAC-1000, indicating that the interactions between Fe precursor and activated carbons are very complex, and C atoms may take part in the reduction of iron oxides. The relative content of C−C and C−O decreases first and then increases when calcination temperatures increase from 500 to 1000°C, but that of CO and OCOH has a contrary trend, suggesting that calcination temperatures influence the formation of functional groups. Fe/NAC-900 shows the best activity and has a sulfur capacity of 322 mg/g, which is related closely to O COH and good crystallinity of Fe 3 O 4 . Fe 3 O 4 is the main active phase in the SO 2 removal process. After desulfurization, O COH, α-Fe 2 O 3 , Fe 3 O 4 , and Fe 0 disappear, and Fe 2 (SO 4 ) 3 is observed, leading to the decrease of SO 2 removal ability.

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Section: Methodsmentioning

confidence: 84%

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃

Guo

Liu²,

Luo³

et al. 2015

Ind. Eng. Chem. Res.

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“…The sharp peaks at 1,417 cm −1 were associated with the vibration of -CH 2 . The intense absorption peak at 1,110 cm −1 indicated the existence of P = O bond in phosphate esters or C-O bond in carboxylic [31][32][33]. Some weak bands also appeared around 500 cm −1 , which corresponded to the out-of-plane bending pattern of O-H or C-H group.…”

Section: Fourier Transformed Infrared Analysismentioning

confidence: 96%

Optimization preparation of activated carbon fromEnteromorpha prolifrausing response surface methodology and its adsorption studies of fluoroquinolone antibiotics

Gao

Yue

Gao

et al. 2014

Desalination and Water Treatment

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A B S T R A C TEnteromorpha prolifera, a marine solid waste abundantly available in Asia, was used as a lowcost precursor to prepare activated carbon (EPAC) using pyrophosphoric acid, H 4 P 2 O 7 , as a chemical activating agent. The effects of impregnation ratio, activation temperature and activation time on the specific surface area of the activated carbon were investigated through response surface methodology. The optimum preparation conditions were described as follows: impregnation ratio, 1.26; activation temperature, 455˚C; activation time, 48 min. The characteristics of EPAC were examined by nitrogen adsorption-desorption isotherms, Fourier transformed infrared spectroscopy and scanning electron microscopy. The total pore volume and specific surface area of EPAC under optimum conditions were identified as 1.365 cm 3 /g and 1124.1 m 2 /g. The EPAC possessed high BJH pore volume, 1.276 cm 3 /g and methylene blue value, 330 mg/g, indicating the existence of abundant mesopores. The adsorption kinetic data of ciprofloxacin were well fitted to pseudo-second-order model, displaying a monolayer adsorption capacity for CIP of 216.55 mg/g. The equilibrium data can be well described by Langmuir model. The dominant sorption mechanism is electrostatic attraction.

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“…Generally, KOH, NaOH, ZnCl 2 and H 3 PO 4 have been widely 49 used as chemical activating agents for the preparation of ACs 50 (Miao et al, 2013;Njoku et al, 2014;Rambabu et al, 2013; …”

Section: Insights Into Properties Of Activated Carbons Prepared Frommentioning

confidence: 99%

“…(PK), a by-product of the petroleum industry, is a common raw 75 material for AC preparation due to its high carbon content and 76 low ash content (Jiang et al, 2008;Rambabu et al, 2013;Wu et 77 al., 2005). Lignin from papermaking black liquid (LG) is widely 78 utilized to prepare high value-added products, for example 79 activated carbon.…”

Section: Insights Into Properties Of Activated Carbons Prepared Frommentioning

confidence: 99%

Insights into properties of activated carbons prepared from different raw precursors by pyrophosphoric acid activation

Gao

Yue

2016

Journal of Environmental Sciences

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Evaluation and comparison of enrichment efficiency of physical/chemical activations and functionalized activated carbons derived from fluid petroleum coke for environmental applications

Cited by 84 publications

References 37 publications

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃

Optimization preparation of activated carbon fromEnteromorpha prolifrausing response surface methodology and its adsorption studies of fluoroquinolone antibiotics

Insights into properties of activated carbons prepared from different raw precursors by pyrophosphoric acid activation

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Evaluation and comparison of enrichment efficiency of physical/chemical activations and functionalized activated carbons derived from fluid petroleum coke for environmental applications

Cited by 84 publications

References 37 publications

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO3

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO3

Optimization preparation of activated carbon fromEnteromorpha prolifrausing response surface methodology and its adsorption studies of fluoroquinolone antibiotics

Insights into properties of activated carbons prepared from different raw precursors by pyrophosphoric acid activation

Contact Info

Product

Resources

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Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃

Influence of Calcination Temperatures on the Desulfurization Performance of Fe Supported Activated Carbons Treated by HNO₃