Phenol adsorption on high microporous activated carbons prepared from oily sludge: equilibrium, kinetic and thermodynamic studies

Mojoudi, Niloofar; Mirghaffari, Nourollah; Soleimani, Mohsen; Shariatmadari, H.; Belver, Carolina; Bedia, Jorge

doi:10.1038/s41598-019-55794-4

Cited by 213 publications

(98 citation statements)

References 38 publications

(44 reference statements)

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“…This may indicate the key role of the micropore system on the effectiveness of phenol elimination from an aqueous solution. Similar relationships were previously described for other activated carbons [ 38 , 39 , 40 ]. Generally, the presence of microporosity enhances interaction between the π electrons in the phenolic ring of phenol and the basal plane of carbon due to the greater potential energy [ 41 ].…”

Section: Resultssupporting

confidence: 80%

Tailoring Properties of Resol Resin-Derived Spherical Carbons for Adsorption of Phenol from Aqueous Solution

et al. 2021

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The polycondensation of resorcinol and formaldehyde in a water–ethanol mixture using the adapted Stöber method was used to obtain resol resins. An optimization of synthesis conditions and the use of an appropriate stabilizer (e.g., poly(vinyl alcohol)) resulted in spherical grains. The resins were carbonized in the temperature range of 600–1050 °C and then chemically activated in an aqueous HNO3 solution, gaseous ammonia, or by an oxidation–reduction cycle (soaking in a HNO3 solution followed by treatment with NH3). The obtained carbons were characterized by XRD, the low-temperature adsorption of nitrogen, SEM, TGA, and XPS in order to determine degree of graphitization, porosity, shape and size of particles, and surface composition, respectively. Finally, the materials were tested in phenol adsorption. The pseudo-second order model perfectly described the adsorption kinetics. A clear correlation between the micropore volume and the adsorption capacity was found. The content of graphite domains also had a positive effect on the adsorption properties. On the other hand, the presence of heteroatoms, especially oxygen groups, resulted in the clogging of the pores and a decrease in the amount of adsorbed phenol.

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Section: Resultssupporting

confidence: 80%

Tailoring Properties of Resol Resin-Derived Spherical Carbons for Adsorption of Phenol from Aqueous Solution

et al. 2021

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“…e q* Ph showed good correlation with S BET and increased with increase in S BET . is nding agreed with those of studies by Mojoudi et al (2019) and Lorenc-Grabowsk (2016). e chemical activation by H 3 PO 4 e ectively increased the S BET of the PKSAC even at a relatively low temperature of the thermal treatment.…”

Section: Production Of Palm Kernel Shell Activated Carbonsupporting

confidence: 89%

Removal of Phenol from Oil Mill Effluent Using Activated Carbon Prepared from Kernel Shell in Thailand’s Palm Industry

Boontham

Habaki

Egashira

2020

J. Chem. Eng. Japan

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The main aim of this study is to treat palm oil mill e uent (POME) containing phenol, which is a hazardous compound, using activated carbon (AC) prepared from palm kernel shell (PKS), one of the byproducts of the palm oil industry. First, PKS from Thailand was characterized by proximate, elemental, and thermogravimetric analyses. The high carbon and low ash contents in the PKS indicated that PKS is a promising precursor for producing AC. Then, palm kernel shell activated carbon (PKSAC) was prepared using chemical activation with orthophosphoric acid as an activating reagent under various conditions. The physical and chemical properties of the PKSACs were characterized using nitrogen adsorption-desorption and Fourier-transform infrared spectroscopy (FT-IR), respectively. Chemical activation improved the yield and physical properties, even as it changed the chemical properties of PKSACs. The PKSACs thus prepared contained large volumes of micropores. Using the prepared PKSACs, batch equilibrium adsorption was conducted to remove phenol from the POME model. The PKSACs could successfully adsorb and remove phenol from the POME model. The phenol adsorption followed the Langmuir model, and the saturated adsorbed amount of phenol increased with increase in surface area. Based on these results, it is concluded that the treatment of POME using PKSACs produced by chemical activation would be a practicable treatment method since the prepared PKSACs provide a high yield and are capable of treating model hazardous compound in POME.

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“…The uptake of phenolic pollutants can be recuperated by using 0.1 M NaOH solution 87 . The phenols react with NaOH to form sodium phenolate anion (C6H5O − Na + ) which are readily desorbed phenols from the biochar adsorbent 88 . The removal efficiency of phenol, 4-CPh, and 2,4-DCPh pollutants gradually reduced from the first cycle to seven cycles; though, removal efficiency remained above 82% showing the potential of WAS-BC as a recyclable adsorbent.…”

Section: Elovich Kinetic Model (Ekm)mentioning

confidence: 99%

Engineered biochar from wood apple shell waste for high-efficient removal of toxic phenolic compounds in wastewater

Kumar

Shaikh

Asif

et al. 2021

Sci Rep

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This study investigated a novel agricultural low-cost bio-waste biochar derived from wood apple fruit shell waste via the pyrolysis method, which is modified by ball milling and utilized to remove toxic phenol and chlorophenols (4-CPh and 2,4-DCPh) from contaminated aqueous media. The ball-milled wood apple fruit shell waste biochar (WAS-BC) sorbent was systematically analyzed by BET, CHN, and FTIR as well as particle size, SEM–EDS, XPS and TGA studies. The sorption equilibrium and kinetic studies exhibit that the sorption capacity was greater than 75% within the first 45 min of agitation at pH 6.0. The uptake capacity of 2,4-DCPh onto WAS-BC was greater than those of 4-CPh and phenol. Equilibrium results were consistent with the Langmuir isotherm model, while the kinetic data were best represented by the Elovich and pseudo-second-order model. The maximum uptake of phenol, 4-CPh, and 2,4-DCPh was 102.71, 172.24, and 226.55 mg/g, respectively, at 30 ± 1 °C. Thus, this study demonstrates that WAS-BC is an efficient, low-cost sorbent that can be used for the elimination of phenol and chlorophenol compounds from polluted wastewater.

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Phenol adsorption on high microporous activated carbons prepared from oily sludge: equilibrium, kinetic and thermodynamic studies

Cited by 213 publications

References 38 publications

Tailoring Properties of Resol Resin-Derived Spherical Carbons for Adsorption of Phenol from Aqueous Solution

Tailoring Properties of Resol Resin-Derived Spherical Carbons for Adsorption of Phenol from Aqueous Solution

Removal of Phenol from Oil Mill Effluent Using Activated Carbon Prepared from Kernel Shell in Thailand’s Palm Industry

Engineered biochar from wood apple shell waste for high-efficient removal of toxic phenolic compounds in wastewater

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