Effective removal of phenol by using activated carbon supported iron prepared under microwave irradiation as a reusable heterogeneous Fenton-like catalyst

Activated carbon-supported iron-based catalysts (FexOy/AC) show excellent deNOx efficiency. However, the specific adsorption mechanisms of NH3, NO, and O2 molecules on their surfaces are still unknown. In this study, the...

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Enhanced deacidification of acidic oil catalyzed by sulfonated granular activated carbon using microwave irradiation for biodiesel production

Chemical Engineering and Processing - Process Intensification ◽

10.1016/j.cep.2018.10.019 ◽

2019 ◽

Vol 135 ◽

pp. 168-174 ◽

Cited By ~ 9

Author(s):

Weidong Lu ◽

Md. Asraful Alam ◽

Chaosheng Wu ◽

Zhongming Wang ◽

Haoping Wei

Keyword(s):

Activated Carbon ◽

Microwave Irradiation ◽

Granular Activated Carbon ◽

Biodiesel Production

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The use of steel slags in the heterogeneous Fenton process for decreasing the chemical oxygen demand of oil refinery wastewater

Water Science & Technology ◽

10.2166/wst.2018.347 ◽

2018 ◽

Vol 78 (5) ◽

pp. 1159-1167 ◽

Cited By ~ 1

Author(s):

Behnam Heidari ◽

Mohsen Soleimani ◽

Nourollah Mirghaffari

Keyword(s):

Microwave Irradiation ◽

Chemical Oxygen Demand ◽

Steel Slag ◽

Oxygen Demand ◽

Oil Refinery ◽

Fenton Process ◽

Refinery Wastewater ◽

Optimum Conditions ◽

Heterogeneous Fenton ◽

Oil Refinery Wastewater

Abstract The Fenton process is a useful and inexpensive type of advanced oxidation process for industrial wastewater treatment. This study was performed with the aim of using the steel slag as a catalyst in the heterogeneous Fenton process in order to reduce the chemical oxygen demand (COD) of oil refinery wastewater. The effects of various parameters including the reaction time (0.5, 1.0, 2.0, 3.0 and 4.0 h), pH (2.0, 3.0, 4.0, 5.0, 6.0 and 7.0), the concentration of steel slag (12.5, 25.0 and 37.5 g/L), and H2O2 concentration (100, 250, 400 and 500 mg/L) on the Fenton process were investigated. Furthermore, the effect of microwave irradiation on the process efficiency was studied by considering the optimum conditions of the mentioned parameters. The results showed that using 25.0 g/L of steel slag and 250 mg/L H2O2, at pH = 3.0, could reduce COD by up to 64% after 2.0 h. Also, microwave irradiation decreased the time of the process from 120 min to 25 min in the optimum conditions, but it consumed a high amount of energy. It could be concluded that steel slags had a high potential in the treatment of oil refinery wastewater through the Fenton process.

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The removal of methyl orange from aqueous solution by biochar and activated carbon under microwave irradiation and in the presence of hydrogen peroxide

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2015.05.003 ◽

2015 ◽

Vol 3 (3) ◽

pp. 1452-1458 ◽

Cited By ~ 18

Author(s):

Andrei Veksha ◽

Puja Pandya ◽

Josephine M. Hill

Keyword(s):

Aqueous Solution ◽

Hydrogen Peroxide ◽

Activated Carbon ◽

Methyl Orange ◽

Microwave Irradiation

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The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells

Soil and Water Research ◽

10.17221/212/2018-swr ◽

2019 ◽

Vol 15 (No. 1) ◽

pp. 30-37 ◽

Cited By ~ 6

Author(s):

Mohib Ullah ◽

Ruqia Nazir ◽

Muslim Khan ◽

Waliullah Khan ◽

Mohib Shah ◽

...

Keyword(s):

Activated Carbon ◽

Toxic Metals ◽

Low Cost ◽

Future Generations ◽

Carbon Adsorbents ◽

Melia Azedarach ◽

Albizia Lebbeck ◽

Effective Removal ◽

Removal Of Heavy Metals ◽

Concentrated Solution

The removal of toxic metals like lead (Pb) and cadmium (Cd) is very urgent keeping their hazardous effects in view. In this work, seeds of Albizia lebbeck and Melia azedarach trees were converted into activated carbon adsorbents and applied for the adsorptive removal of Pb and Cd metals from an aqueous solution. The as prepared adsorbents were characterised by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The removal efficiencies of both metals were strongly dependent on their initial concentration, contact time, pH, temperature and the quantity of adsorbents. 0.2 g of both adsorbents removed respectively 75 and 62% Pb and 77 and 66% Cd from from 100 ml of a 40 mg/l concentrated solution in 120 min at pH 5 and a temperature of 20°C. Both the Freundlich and Langmuir isotherms were well fitted to the experimental data. We believe that this work will provide a convenient way to synthesise low cost activated carbon adsorbents for the remediation of highly toxic metals from wastewater to safeguard our environment for future generations.

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