The Adsorption of Phenol by Lignite Activated Carbon

Lü, Guocheng; Hao, Jiao; Liu, Liu; Ma, Hongwen; Qin-fang, Fang; Wu, Limei; Wei, Mingquan; Zhang, Yihe

doi:10.1016/s1004-9541(09)60224-x

Cited by 41 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 that the percentage removal of PCP was maximum at pH = 4 and declined by increasing the pH above this value with a sharp decrease at pH [ 8. Similar results were obtained by (Lü et al 2011) for the adsorption of phenol by lignite activated carbon. According to these authors, at very low pH values, there are many positive charges on the surface of activated carbon, which gives a large static repulsion force.…”

Section: Phpzc and Effect Of Solution Ph On Pcp Adsorptionsupporting

confidence: 88%

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Abdel‐Ghani

El-Chaghaby

Zahran³

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Corn wastes generated from starch and glucose production industry were used for the preparation of activated carbons. The prepared activated carbons and a commercial activated carbon were evaluated for their capability of adsorbing pentachlorophenol (PCP) from aqueous solution. Batch adsorption experiments were performed under different operating conditions including pH (2-8), adsorbent dosage (0.5-4.0 g/l), initial PCP concentration (10-100 mg/l), contact time (30-300 min), and temperature (25-45°C). The kinetics and equilibrium models describing the adsorption of PCP by the prepared adsorbents were obtained. The adsorption of PCP by corn waste-based adsorbents was found to follow the secondorder kinetics and the Freundlich equilibrium models. The intraparticle diffusion mechanism was successfully fitted to the obtained experimental data. Thermodynamic studies indicated that the adsorption process was exothermic. The adsorbents surface characterization revealed the presence of many functional groups capable of binding the adsorbate molecules. The study results suggest the possible use of corn wastes as a starting material for the production of activated carbon, thus lowering the costs of wastewater treatment processes.

show abstract

Section: Phpzc and Effect Of Solution Ph On Pcp Adsorptionsupporting

confidence: 88%

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Abdel‐Ghani

El-Chaghaby

Zahran³

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…A dose rate of 400 mg L −1 was selected due to the aforementioned comparison with the previous application by Chao et al , however, the selected dose rate has an important impact on observed removal efficiencies. Lü et al reported that adsorption of phenol on lignite increased up to 500 mg L −1 and then remained stable. Similarly, Amuda et al showed that Zn adsorption increased up until the point at which the adsorption peak is reached which was affected by both the adsorbent type (as a result of the specific surface area) and the adsorbent dose.…”

Section: Resultsmentioning

confidence: 94%

Enhancing the removal of hazardous pollutants from coke‐making wastewater by dosing activated carbon to a pilot‐scale activated sludge process

Raper

Soares

Chen

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Powdered activated carbon (PAC) was investigated for its ability to remove six polycyclic aromatic hydrocarbons ( 6PAHs) (fluoranthene, benzo[b + J]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3-cd]pyrene, benzo[g,h,i]perylene), trace metals and colour from coke-making wastewater when dosed to a pilot-plant activated sludge process (ASP). The ASP had a volume of 0.68 m 3 and was operated to simulate the full-scale ASP treating coke wastewater from a steel works. Operational conditions included a flow rate of 0.78 m 3 day −1 , a hydraulic retention time of 21 h, a sludge retention time of 38 days and a temperature of 27 ∘ C. The ASP was operated for a control period before PAC was dosed directly into the aeration cell at a dose of 400 mg L −1 .RESULTS: Powdered activated carbon addition resulted in a 20% increase in removal efficiency of the 6PAHs. Removal efficiency of trace metals was variable, but increased for nickel, chromium and cadmium by 22.6%, 20.5% and 12.4%, respectively. Improvement in colour removal efficiency was marginal at 5%. CONCLUSION: PAC addition allowed the improvement of treatment efficiencies in the ASP process at relatively low capital and operational costs, which may assist in reaching tighter effluent emission limits set for the industry.

show abstract

“…The pH of solution was adjusted by adding 0.5 mL buffer solution (20% ammonia-ammonium chloride solution), and then 1 mL of 4-aminoantipyrine and 1 mL of potassium ferricyanide were added and mixed well. In this method, phenol reacts with 4-aminoantipyrine in the presence of potassium ferricyanide to form a colored antipyrine dye [19,20]. The colored sample was measured by UV-1100 UV-visible spectrophotometer (Shanghai Mapada Instrument Co. Ltd., Shanghai, China) at 510 nm.…”

Section: Phenol Adsorption On Acmentioning

confidence: 99%

Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation

Xie

Qin

Wang

et al. 2020

IJERPH

View full text Add to dashboard Cite

Adsorption by activated carbons (AC) is an effective option for phenolic wastewater treatment. Three commercial AC, including coal-derived granular activated carbons (GAC950), coal-derived powdered activated carbons (PAC800), and coconut shell-derived powdered activated carbons (PAC1000), were utilized as adsorbent to study its viability and efficiency for phenol removal from wastewater. Pseudo-first order, pseudo-second order, and the Weber–Morris kinetic models were used to find out the kinetic parameters and mechanism of adsorption process. Further, to describe the equilibrium isotherms, the experimental data were analyzed by the Langmuir and Freundlich isotherm models. According to the experimental results, AC presented a micro/mesoporous structure, and the removal of phenol by AC was affected by initial phenol concentration, contact time, pH, temperature, and humic acid (HA) concentration. The pseudo-second order kinetic and Langmuir models were found to fit the experimental data very well, and the maximum adsorption capacity was 169.91, 176.58, and 212.96 mg/g for GAC950, PAC800, and PAC1000, respectively, which was attributed to differences in their precursors and physical appearance. Finally, it was hard for phenol to be desorbed in a natural environment, which confirmed that commercial AC are effective adsorbents for phenol removal from effluent wastewater.

show abstract

The Adsorption of Phenol by Lignite Activated Carbon

Cited by 41 publications

References 9 publications

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Enhancing the removal of hazardous pollutants from coke‐making wastewater by dosing activated carbon to a pilot‐scale activated sludge process

Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation

Contact Info

Product

Resources

About