Comparison of a Homemade Bacuri Shell Activated Carbon With Carbon Nanotubes for Food Dye Removal

Saucier, Caroline; Adebayo, Matthew A.; Lima, Éder C.; Prola, Liziê Daniela Tentler; Thue, Pascal S.; Umpierres, Cibele S.; Puchana-Rosero, M.J.; Machado, Fernando Machado

doi:10.1002/clen.201400669

Cited by 34 publications

(9 citation statements)

References 47 publications

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“…The band located at 1386 is ascribed to the -CH band (Umpierres et al 2018). The C-O stretching of phenolic or carboxylate Groups cause a band's emergence at 1023 cm -1 (Saucier et al 2015). The vibrational band of C-H out-of-plane of aromatics presented two bands at 637 and 470 cm -1 .…”

Section: Fig 2 Xrd Pattern Of Aphacmentioning

confidence: 99%

Fabrication of high surface area acid-treated activated carbon from pomegranate husk for 2,4-dichlorophenol adsorption

Taheri¹,

Amin²,

Fatehizadeh³

et al. 2021

Preprint

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In the present study, zinc chloride followed by acid treating was employed for fabrication activated carbon with a high surface area from pomegranate husk (APHAC) for 2,4-dichlorophenol (2,4-DCP) adsorption. The APHAC was a well-developed pore and exhibiting specific surface areas of 1576 m2/g. Based on the XRD analysis, the diffraction peaks between 15 ° and 35 ° corresponded to amorphous carbon, and the pHpzc values of APHAC was 6.15 ± 0.15. According to batch experiments, the optimum adsorption condition of 2,4-DCP was pH of 3, contact time 60 min, and APHAC dose of 1.75. The absorption capacity of 2,4-DCP at the APHAC dose of 0.5 promptly decreased from 259.5 ± 12.9 mg/g at the initial concentration of 150 mg/L to 74.5 ± 3.7 mg/g dose of 2 g/L. With increasing temperature from 10°C to 50°C, the adsorption efficiency declined from 99.8 ± 0.5% to 75.6 ± 1.89%. The isotherm and kinetic of 2,4-DCP by APHAC revealed that Freundlich and Elovich satisfactorily fitted with experimental data.

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Section: Fig 2 Xrd Pattern Of Aphacmentioning

confidence: 99%

Fabrication of high surface area acid-treated activated carbon from pomegranate husk for 2,4-dichlorophenol adsorption

Taheri¹,

Amin²,

Fatehizadeh³

et al. 2021

Preprint

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“…After EC optimal conditions, were found adsorption experiments were carried out with the purpose of polishing the final effluent. The granular activated carbon (VETEC) was previously treated with 6 mol/L HCl at open reflux (at boiling temperature) with a volumetric ratio of 1.5:1 (HCl:activated carbon) for 60 min, washed with distilled water and dried at 60°C for 24 h. This process was carried out to remove the inorganic material present in the activated carbon, thus causing an increase in the surface area and activation of the adsorption sites [35,36]. The surface area of the activated carbon was determined at 856.4 m 2 /g through adsorption isotherms of N 2 (BET method).…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…The surface area of the activated carbon was determined at 856.4 m 2 /g through adsorption isotherms of N 2 (BET method). The pH of zero charge (pH PCZ ) was determined according Saucier et al [35] using 20 mL of 0.050 mol/L NaCl and 50 mg of the adsorbent. The pH values of the solutions were adjusted from 1 to 10 with 0.1 mol/L of HCl or NaOH.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

Pizutti¹,

Santos²,

Hemkemeier³

et al. 2019

Desalination and Water Treatment

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Water reuse is an indispensable reality in the search for an equilibrium between water resources and water scarcity. The recovery and production of reclaimed water with a guarantee of safety of use requires advanced treatment technologies. This study proposes a conjugated system, composed of electrocoagulation followed by adsorption, for the post-treatment of UASB effluent for reuse purposes. For this purpose, initially the electrocoagulation process (EC) was optimized using response surface methodology. The optimum conditions were for a current density of 29.44 A/m 2 and pH 6.0, with 44.58% of COD removal and energy consumption of 31.1 kWh per kg of COD removed. The EC effluent was treated by adsorption on a fixed bed column of activated carbon. The conjugated system provided the complete removal of COD and BOD, and significant removals of turbidity (96.5%), phosphorus (97.5%) and total and thermotolerant coliforms. The quality of the final treated water reached parameters for reuse according to EPA.

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“…are the respective Langmuir, Freundlich and Liu equilibrium constants; nF and nL are the exponents of Freundlich and Liu models, respectively, (nF and nL are dimensionless) [28,29].…”

Section: Adsorption Testsmentioning

confidence: 99%

“…In aqueous solution, Al 3+ is a strongly hydrated ion and is found surrounded by six coordinated water molecules in an octahedral configuration. The highly positive charge on the central metal ion causes some polarization of the O-H bonds and there is a tendency for protons to dissociate giving one or more hydroxylated species [29]. The chemical reaction (3) represents this process, where the complexes of Al 3+ ions in water act as weak acids [6]:…”

Section: Wet-end Processing Wastewater Characterization and Treatmentsmentioning

confidence: 99%

A Coagulation-Flocculation Process Combined With Adsorption Using Activated Carbon Obtained From Sludge for Dye Removal From Tannery Wastewater

Puchana-Rosero

Lima

Mella³

et al. 2018

J. Chil. Chem. Soc.

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Coagulation-flocculation (CF) process studies on aqueous solutions of Acid Black 210 dye (AB-210), were performed to investigate efficiency at different pH, coagulant and polyelectrolyte doses, and sedimentation times. In the adsorption studies of the dye removal, the initial pH and isotherms studies were performed using an activated carbon prepared by microwave-assisted pyrolysis of Tannery sludge. This adsorbent material was characterized by isotherms of N 2 adsorptiondesorption and density functional theory. Finally, the efficiency of the combined process CF followed by adsorption, was shown using a synthetic effluent identical to that produced in the wet-end process of the leather industry in industrial equipment. Effluent was collected from each treatment bath and analyzed for its physical properties and by ion chromatography. The best conditions found in CF processes were: pH 10.0, sedimentation time of 60 minutes, coagulant dose of 71 mg L-1 (Al 2 (SO 4) 3) and dose of flocculant (polyelectrolyte FX AS1) of 0.090 mg L-1. In the adsorption processes, the equilibrium data were best fit to the Liu isotherm model, presenting the maximum sorption capacity (Q max) for AB-210 of 974.7 mg g-1 at 303.15K at pH 2.0. Using the synthetic effluent, the combined CF followed by adsorption of AB-210 dye demonstrated a removal of 85.2%, indicating that the combined process is efficient for real wastewater treatment.

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Comparison of a Homemade Bacuri Shell Activated Carbon With Carbon Nanotubes for Food Dye Removal

Cited by 34 publications

References 47 publications

Fabrication of high surface area acid-treated activated carbon from pomegranate husk for 2,4-dichlorophenol adsorption

Fabrication of high surface area acid-treated activated carbon from pomegranate husk for 2,4-dichlorophenol adsorption

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

A Coagulation-Flocculation Process Combined With Adsorption Using Activated Carbon Obtained From Sludge for Dye Removal From Tannery Wastewater

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