Reuse of coal combustion ashes as dyes and heavy metal adsorbents: Effect of sieving and demineralization on waste properties and adsorption capacity

Montagnaro, Fabio; Santoro, L.

doi:10.1016/j.cej.2008.12.022

Cited by 39 publications

(19 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Methylene Blue (MB) is the basic dye that is studied the most frequently [221,226,227,231]. If carbon concentrates were used as adsorbent, adsorbed amount of MB ranged 20-80 mg/g [226,227,231].…”

Section: Retention Of Dyes and Other Pollutants From Effluentsmentioning

confidence: 99%

See 1 more Smart Citation

Unburned carbon from coal combustion ash: An overview

Bartoňová

2015

Fuel Processing Technology

144

View full text Add to dashboard Cite

Section: Retention Of Dyes and Other Pollutants From Effluentsmentioning

confidence: 99%

“…Therefore, only a few works dealing with adsorption on UC from liquid environment is available [141,221,[225][226][227][228][229][230][231][232][233][234][235][236][237][238][239][240].…”

Section: Retention Of Dyes and Other Pollutants From Effluentsmentioning

confidence: 99%

Unburned carbon from coal combustion ash: An overview

Bartoňová

2015

Fuel Processing Technology

144

View full text Add to dashboard Cite

“…It is because unburned carbon is a porous material that contributes to the increase of SSA and pore size. Montagnaro and Santoro [3] also noted an increase in the SSA of CFA as a result of the existence of unburned carbon in CFA. Fig.…”

Section: Characterization Of Cfamentioning

confidence: 99%

“…Similar observations were made by Woolard [2] who found hydroxysodalite at NaOH treated CFA. 0.25 SO 3 1.04 unburned carbon 19.11 Fig. 3 illustrated SEM micrograph of the original CFA.…”

Section: Characterization Of Cfamentioning

confidence: 99%

The character of dual site adsorbent on coal fly ash toward Pb (II) adsorption

Astuti¹

2013

IOSRJEN

View full text Add to dashboard Cite

-Coal fly ash (CFA), generated during combustion of coal in the electricity production is recognized as an environmental pollutant. CFA is composed primarily of some oxides including SiO 2 , Al 2 O 3 having active site and unburned carbon that anables it to act as a dual site adsorbent. However, the existence of unburned carbon in coal fly ash can generate two possibilities. It can improve the adsorption capacity, or contradictionly hinder the adsorption.The aim of this paper is to study the contribution of unburned carbon on coal fly ash toward characters, adsorption capacity and adsorption mechanism. In this context, CFA with various unburned carbon content were employed as adsorbent of Pb(II) in aqueous solutions. The research shows that the existence of unburned carbon in CFA leads to the increase of specific surface area and pore size, but the adsorption capacity for Pb(II) decrease. Adsorption kinetics of Pb(II) onto CFA could be approximated with a pseudo second order kinetic model with the rate constant was 0.298 g.mg -1 .min -1 .

show abstract

“…Several studies have reported that significant amounts of heavy metals are removed from solution by adsorption on fly ash [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

A Case Study of Landfill Leachate Using Coal Bottom Ash for the Removal of Cd2+, Zn2+ and Ni2+

Ayala

Fernández

2016

Metals

View full text Add to dashboard Cite

Abstract:The removal of Cd 2+ , Zn 2+ and Ni 2+ by coal bottom ash has been investigated. In single metal system, metal uptake was studied in batch adsorption experiments as a function of pH (2-3), contact time (5-180 min), initial metal concentration (50-400 mg/L), adsorbent concentration (5-40 g/L), particle size, and ionic strength (0-1 M NaCl). Removal percentages of metals ions increased with increasing pH and dosage. Removal efficiency at lower concentrations was greater than at higher values. The maximum amount of metal ion adsorbed in milligrams per gram was 35.4, 35.1 and 34.6 mg/g for Zn 2+ , Cd 2+ and Ni 2+ , respectively, starting out from an initial solution at pH 3. Simultaneous removal of Zn 2+ , Cd 2+ and Ni 2+ ions from ternary systems was also investigated and compared with that from single systems. Cd 2+ uptake was significantly affected by the presence of competing ions at pH 2. The results obtained in the tests with landfill leachate showed that bottom ash is effective in simultaneously removing several heavy metals such as Ni, Zn, Cd, As, Mn, Cu, Co, Se, Hg, Ag, and Pb.

show abstract

Reuse of coal combustion ashes as dyes and heavy metal adsorbents: Effect of sieving and demineralization on waste properties and adsorption capacity

Cited by 39 publications

References 40 publications

Unburned carbon from coal combustion ash: An overview

Unburned carbon from coal combustion ash: An overview

The character of dual site adsorbent on coal fly ash toward Pb (II) adsorption

A Case Study of Landfill Leachate Using Coal Bottom Ash for the Removal of Cd2+, Zn2+ and Ni2+

Contact Info

Product

Resources

About