Textural properties and surface chemistry of lotus stalk-derived activated carbons prepared using different phosphorus oxyacids: Adsorption of trimethoprim

Hai, Liu; Zhang, Jian; Bao, Nan; Cheng, Cheng; Ren, Lei; Zhang, Chenglu

doi:10.1016/j.jhazmat.2012.08.015

Cited by 113 publications

(29 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The bands at 1074 and 876 cm -1 could result from ionized linkage of P? O-in acid phosphate esters, to symmetrical vibration in a chain of P-O-P and to P-C phosphorus-containing compound [35,36]. These functional groups are due to the presence of H 3 PO 4 acid as an activation agent in the preparation of C-PAN.…”

Section: Characterization Of C-pan Adsorbentmentioning

confidence: 99%

Removal of Basic Blue 41 dyes using Persea americana-activated carbon prepared by phosphoric acid action

et al. 2016

View full text Add to dashboard Cite

Adsorption study of Basic Blue 41 dye onto activated carbon from Persea americana nuts with phosphoric acid activation was achieved. The effect of operating parameters, the effect of pH (2-12), adsorbent amount (5-30 mg/50 mL), dye concentration (25-125 mg/L), contact time (0-200 min) and temperature (298-323 K), on the adsorption capacity was examined. The experimental isotherm data were analyzed using Langmuir and Freundlich models, which showed that the best fit was achieved by the Langmuir model with the maximum monolayer adsorption capacity at 625 mg/g. The adsorption kinetic process followed pseudo-second-order kinetics. Thermodynamic evaluation showed that the process was endothermic (DH 0 = 144.60 kJ/mol) and spontaneous (DG 0 varied from to -11.64 to -19.50 kJ/mol), while the positive value of entropy (DS 0 = 524.3 J/mol K) revealed increased randomness at the adsorbent-adsorbate interface. It was found to be a very efficient adsorbent and a promising alternative for dye removal from aqueous solutions.

show abstract

Section: Characterization Of C-pan Adsorbentmentioning

confidence: 99%

Removal of Basic Blue 41 dyes using Persea americana-activated carbon prepared by phosphoric acid action

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The use of phosphoric acid (H 3 PO 4 ) as activating agent for preparation of activated carbons with well-developed porosity and excellent sorption ability toward dyes from various biomass residues has been well established [8][9][10][11]. As a good catalyst, phosphoric acid could promote the hydrolysis of lignocelluloses at high temperature [12].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of rhodamine B removal by modifying activated carbon developed from Lythrum salicaria L. with pyruvic acid

Huang

Zheng

Feng

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

“…It suggests that CW had great changes at this temperature compared with CA, which can be interpreted that CW would be modified with K 2 SiO 3 as the activating agent under the temperature. However, as lignocellulose material, the decomposition temperature of CA was about 300 °C [17]. CW-K 2 SiO 3 had no obvious peaks as the temperature increased.…”

Section: Results Of Tga and Dtg Analysismentioning

confidence: 91%

“…Fig. 9 shows that there was a diffraction peak at around 2θ = 25° for CW which was dramatically different from CA, which can be explained that CA had the microcrystalline structure of cellulose [17] and the structure of aromatic layers was stacked [33]. After the activation with K 2 SiO 3 , diffraction peak at around 2θ = 25°…”

Section: Xrd Analysismentioning

confidence: 96%

Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons

Kong

Yue

Zhao

et al. 2015

Fuel Processing Technology

View full text Add to dashboard Cite

The paper probed the preparation of activated carbon by potassium silicate (K 2 SiO 3 ) activation from keratin waste (cowhair waste, CW) and lignocellulosic materials (Cyperus alternifolius, CA) and the comparisons of physicochemical properties of the resulting carbons. These impregnation conditions were as follows: one impregnated at room temperature for 12 h then dipped at high temperature for 30 min; the other was only impregnated at room temperature for 12 h, producing four activated carbons CWAC-1, CWAC-2, CAAC-1, and CAAC-2. The influence of activation time, K 2 SiO 3 /precursor weight ratio, and the pre-process on properties of activated carbons was discussed. The CWAC-1 produced at 700 °C with the K 2 SiO 3 /precursor weight ratio of 2:1 possessed the BrunauerEmmet-Teller (BET) surface area of 1965 m 2 /g and total pore volume of 1.345 cm 3 /g, while CAAC-1 prepared at the same conditions attained the BET surface area of 1710 m 2 /g and total pore volume of 0.949 cm 3 /g. The surface area and total pore volume of CAAC increased with the impregnation ratio. Moreover, CWAC-1, CWAC-2, CAAC-1, and CAAC-2 exhibited high portion of micropores, illustrating the role of K 2 SiO 3 . The analysis with a Fourier transform infrared spectrometer indicates that CWAC has more functional groups than CAAC, as well as CWAC-1 and CWAC-2 which possess similar functional groups.

show abstract

Textural properties and surface chemistry of lotus stalk-derived activated carbons prepared using different phosphorus oxyacids: Adsorption of trimethoprim

Cited by 113 publications

References 38 publications

Removal of Basic Blue 41 dyes using Persea americana-activated carbon prepared by phosphoric acid action

Removal of Basic Blue 41 dyes using Persea americana-activated carbon prepared by phosphoric acid action

Enhancement of rhodamine B removal by modifying activated carbon developed from Lythrum salicaria L. with pyruvic acid

Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons

Contact Info

Product

Resources

About