Mass Transfer Mechanism and Equilibrium Modelling of Hydroxytyrosol Adsorption on Olive Pit–Derived Activated Carbon

Eder, Severin; Müller, Katrin; Azzari, Paride; Arcifa, Andrea; Peydayesh, Mohammad; Nyström, Laura

doi:10.1016/j.cej.2020.126519

Cited by 43 publications

(13 citation statements)

References 63 publications

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“…The O 1 s spectrum of the CNG exhibits an unresolved broad signal centered at about 532.2 eV (Supplementary Fig. 32b ), which has been observed in previous investigations 35 , 36 . The addition of Fe species to the sample (Fe-CNG) results in a significant broadening of the O 1 s envelope toward the lower-BE side of the spectrum.…”

Section: Resultssupporting

confidence: 81%

Mechanistic insight into the active centers of single/dual-atom Ni/Fe-based oxygen electrocatalysts

et al. 2021

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Single-atom catalysts with maximum metal utilization efficiency show great potential for sustainable catalytic applications and fundamental mechanistic studies. We here provide a convenient molecular tailoring strategy based on graphitic carbon nitride as support for the rational design of single-site and dual-site single-atom catalysts. Catalysts with single Fe sites exhibit impressive oxygen reduction reaction activity with a half-wave potential of 0.89 V vs. RHE. We find that the single Ni sites are favorable to promote the key structural reconstruction into bridging Ni-O-Fe bonds in dual-site NiFe SAC. Meanwhile, the newly formed Ni-O-Fe bonds create spin channels for electron transfer, resulting in a significant improvement of the oxygen evolution reaction activity with an overpotential of 270 mV at 10 mA cm−2. We further reveal that the water oxidation reaction follows a dual-site pathway through the deprotonation of *OH at both Ni and Fe sites, leading to the formation of bridging O2 atop the Ni-O-Fe sites.

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Section: Resultssupporting

confidence: 81%

Mechanistic insight into the active centers of single/dual-atom Ni/Fe-based oxygen electrocatalysts

et al. 2021

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“…Adsorption of phenolic compounds was considerably affected molecular oxygen [159,160], and functional groups on the surface of the activated carbon [161,162].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Hamoudi

Hamdi

Brendlé

2021

Ecological Chemistry and Engineering S

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The use of antibiotics for breeding and for humans increased considerably in recent years, as a dietary supplement to enhance animal growth. This frequent use leads to the detection of residues in water and wastewater. Thus, the emergence of new strains of bacteria resistant to these antibiotics and, can lead to incurable diseases of livestock, and can lead to a possible transmission of these strains to humans. The purpose of this work is to develop new materials based on treated Maghnia clay, activated carbon, cement, and PVA polymer, named geomaterials. These materials were intended for the containment of hazardous wastes in landfills. The removal of tetracycline from aqueous solution was tested by adsorption onto synthesised geomaterials and their mineral constituents. Adsorption kinetics revealed that tetracycline was rapidly retained by GM and ATMa. This was confirmed by the relatively short equilibrium time of 30 min. The pseudo-second-order and intraparticle models well fitted the adsorption kinetic of the TC-adsorbent studied systems. It was noticed that the adsorption kinetic passes through several mechanisms, was demonstrated by the multi-linearity on the plot of qt against the square root of t. The adsorption capacity (Qa ) of TC onto GM is pH-dependent. Indeed, Qa reaches a maximum value (Qa = 12.58 mg ∙ g–1 at a very acidic pH of 2, then the adsorbed amount decreases to reach a minimum value at pH of 8, and for basic pHsQa increases up to 10 mg ∙ g–1.

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“…Thermodynamic studies on the adsorption of phenol from aqueous solution by coffee husk activated carbon is investigated by Ta et al [46]. Eder et al [47] has investigated mass transfer mechanism and equilibrium modelling of hydroxytyrosol adsorption on olive pit-derived activated carbon. Phenols removal from water stream through adsorption on activated carbon prepared from food waste described by Yu et al [48].Amar et al [49] has studied adsorption of phenols on regional clay.…”

Section: Effect Of Concentration On Adsorption Of Substituted Phenols...mentioning

confidence: 99%

Removal of 2-Nitrophenol, 2,4-Dinitrophenol and 2,4,6- Trinitrophenol From Aqueous Solution Through Adsorption on Cobalt, Nickel and Tungsten Ferrocyanides

Tewari¹,

Grant²

2021

Rev. Bol. Quim.

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Los ferrocianuros de cobalto, níquel y tungsteno se sintetizaron y caracterizaron mediante estudios elementales y espectrales. Se estudió la eliminación de 2-nitrofenol, 2,4-dinitrofenol y 2,4,6-trinitrofenol de una solución acuosa mediante adsorción en ferrocianuros metálicos sintetizados en el rango de pH 1.0 - 10.0 y a una temperatura de 30 ± 1º C. La adsorción de tipo Langmuir se siguió en el rango de concentración de 10-3 M a 10-4 M para las soluciones de 2-nitrofenol, 2,4-dinitrofenol y 2,4,6-trinitrofenol. Se encontró que el 2,4,6-trinitrofenol y 2-nitrofenol tenían afinidad máxima y mínima con los tres ferrocianuros metálicos estudiados. Se encontró que los ferrocianuros de níquel y tungsteno tienen mayor y menor capacidad de adsorción con los tres fenoles sustituidos.

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Mass Transfer Mechanism and Equilibrium Modelling of Hydroxytyrosol Adsorption on Olive Pit–Derived Activated Carbon

Cited by 43 publications

References 63 publications

Mechanistic insight into the active centers of single/dual-atom Ni/Fe-based oxygen electrocatalysts

Mechanistic insight into the active centers of single/dual-atom Ni/Fe-based oxygen electrocatalysts

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Removal of 2-Nitrophenol, 2,4-Dinitrophenol and 2,4,6- Trinitrophenol From Aqueous Solution Through Adsorption on Cobalt, Nickel and Tungsten Ferrocyanides

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