Phenol adsorption onto powdered and granular activated carbon, prepared from Eucalyptus wood

Tancredi, Néstor; Medero, Natalia; Möller, F.; Píriz, J.; Plada, Carina; Cordero, Tomás

doi:10.1016/j.jcis.2004.06.067

Cited by 150 publications

(71 citation statements)

References 21 publications

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“…2), the IR absorptions due to the υ 3 and υ 4 stretching vibrations of interlayer CO 3 2-ions were recorded at 1340-1370 and 1000-1020 cm -1 . This is almost what is observed for every hydroxide irrespective of the nature of the octahedral sheets suggesting a rather symmetric environment for the interlayer anions [17], [18]. In the low frequency region, the adsorption peaks of the spectra corresponding to the lattice vibration modes are attributed to Mg-OH at 610-620 cm -1 , Al-OH at 540-780 cm -1 and O-Al-Mg-O at 440-550 cm -1 .…”

Section: Ft-ir Analysis Of the Mg 2 Alco 3 -Ldh And Mg 2 Alc 2 O 4 -Lsupporting

confidence: 66%

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Intercalation of oxalate ions in the interlayer space of a layered double hydroxide for nickel ions adsorption

Doungmo

Kamgaing²,

Temgoua³

et al. 2016

IJBAS

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In this study, sorption properties of a synthesized anionic clay were enhanced by the intercalation of oxalate ions in its interlayer space. The pristine and modified clay materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and thermal analysis. These techniques confirmed the presence of oxalate ions in the interlayer space of the clay. The intercalated clay was then used as a matrix for the sorption in batch mode of nickel ions in aqueous solution. The influence of a number of parameters such as contact time, pH, initial concentration of the analyte and adsorbent dosage were studied. The maximum adsorption of nickel was obtained at pH 6, that is, about 90% Ni 2+ removal. The adsorbent/adsorbate equilibrium follows a pseudo-second order kinetics and best matches the Langmuir model. The modified clay was shown to be efficient matrix for the sorption of nickel ions.

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Section: Ft-ir Analysis Of the Mg 2 Alco 3 -Ldh And Mg 2 Alc 2 O 4 -Lsupporting

confidence: 66%

“…The Freundlich model is applied in the case of non-ideal sorption on heterogeneous surfaces and multilayer sorption [18]. The equation is commonly given by:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Intercalation of oxalate ions in the interlayer space of a layered double hydroxide for nickel ions adsorption

Doungmo

Kamgaing²,

Temgoua³

et al. 2016

IJBAS

View full text Add to dashboard Cite

show abstract

“…The third stage of decomposition of the sample occurs between the temperatures of 670 °C and 920 °C, with a weight loss of 7.16%. Phenolic and carbonyl groups decompose at 800 °C to produce CD and CD 2 (Bandosz, 1999;Hayashi et al, 2000;Polovina et al, 1997;Sun & Webley, 2011;Tancredi et al, 2004). Thus, the highest percentage in mass was observed in the range referring to the oxygen and carboxyl groups, and the lowest in the phenolic and carbonyl groups.…”

Section: Adsorbent Characterizationmentioning

confidence: 98%

Extraction of hydrocolloids from Pereskia Aculeata Miller: reuse of process residue as activated carbon for the pigment-removal phase

et al. 2018

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Hydrocolloids of Pereskia aculeata Miller (DPNH) are potential ingredients in food industry as emulsifiers and stabilizers. The extraction process of DPNH requires the removal of pigments with activated carbon. Because this step is critical to the quality of the ingredient and has an impact on costs, a new activated carbon has been developed with residues from the same process. Residues activated with NaDH and H 3 PD 4 (300 °C, 1 h) were subjected to batch adsorption tests in model solutions of malachite green (MG), carbohydrate and protein. Residue treated with 85% H 3 PD 4 (DPNAC) had higher productivity and MG adsorption capacity, displaying a predominantly microporous surface (MEV/BET) with chemical activation confirmed by TG/FTOR. DPNAC showed higher MG and protein adsorption capacity than the commercial activated carbon (CAC) did. Results for MG-adsorption capacity by DPNAC did not show significant differences in the presence of protein and carbohydrate, presenting the higher affinity of the adsorbent for the dye. Adsorption isotherms showed DPNAC to be more favorable to MG adsorption than CAC, and to have a good fit to Langmuir-Freundlich model. DPNAC made it possible to reduce costs and allowed the sustainability of the process, leading to increased efficiency in selective pigment removal compared with CAC.Keywords: adsorption; carbohydrate; malachite green; protein; sustainable process.Practical Application: The activated carbon obtained using solid residues of the extraction process of hydrocolloids from Pereskia aculeata Miller proved to be more effective in protein and pigment adsorptions and less effective in carbohydrate adsorption when compared to using a commercial activated carbon. The potential use is waste treatment systems and clarification process.

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“…Therefore, an alternative use for waste materials, such as recycling, has to be found. Although there has been interest in using the carbon-based waste materials in different types of wastewater treatment applications, such as adsorption [48,49,50], only a few studies in the literature focused on the preparation of carbonsupported catalysts from waste material in CWPO. In the present study, in which waste material formed during the biomass gasification process, carbon residue (CR) was used as a carbon-based catalyst support.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

et al. 2017

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Biomass-based carbon residue (CR) was used as a support material for iron catalysts to degrade bisphenol A (BPA) in catalytic wet peroxide oxidation (CWPO). According to the results, CR and Fe/CR catalysts are suitable materials for CWPO. The Fe catalysts were prepared by either incipient wet impregnation or wet impregnation methods with an iron chloride solution. The specific surface area of the prepared catalysts was 17-91 m g , and it remained the same after the oxidation experiments. The CWPO experiments were carried out batch-wise at c (

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Phenol adsorption onto powdered and granular activated carbon, prepared from Eucalyptus wood

Cited by 150 publications

References 21 publications

Intercalation of oxalate ions in the interlayer space of a layered double hydroxide for nickel ions adsorption

Intercalation of oxalate ions in the interlayer space of a layered double hydroxide for nickel ions adsorption

Extraction of hydrocolloids from Pereskia Aculeata Miller: reuse of process residue as activated carbon for the pigment-removal phase

Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

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