Performance of dry water- and porous carbon-based sorbents for carbon dioxide capture

Al-Wabel, Mohammad I.; Elfaki, Jamal; Usman, Adel R.A.; Hussain, Qaiser; Ok, Yong Sik

doi:10.1016/j.envres.2019.04.020

Cited by 69 publications

(16 citation statements)

References 67 publications

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“…Thus, Ni/ZIF‐8 showed the highest performance suggesting an improvement in its adsorption ability however ZIF‐8 revealed the lowest adsorption affinity in DBT adsorption. The low ability of ZIF‐8 to adsorb DBT can be explicated in detail that its structure is less porous compared to other prepared adsorbents …”

Section: Resultsmentioning

confidence: 99%

Experimental and Computational Study of Organic Sulfur Removal Proficiency of (Ni, Cu, Co)‐Doped ZIF‐8 Adsorbents

Saeedirad

Ganjali

Rashidi³

et al. 2020

ChemistrySelect

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The synthesis and characterization of a series of metal‐doped ZIF‐8 (metal=Ni, Co and Cu) has been introduced to gain the highly efficient adsorption of dibenzothiophene (DBT) in liquid phase. Under 150 ml DBT/iso‐octane, 100–1700 ppm, and 25–85 °C, the excellent efficiency and reusability in DBT removal was achieved and fitted better with the pseudo‐first order reaction. The maximum adsorption of 191.84 mg S/g for Ni/ZIF‐8 and two steps for intraparticle diffusion study contrary to Cu‐ and Co‐ZIF‐8 suggested the presence of Ni‐HMeIM clusters in ZIF‐8 cavities. Comparing the performance of prepared adsorbents, the order of qmax and PC was the same, i. e. PC Ni/ZIF‐8> PC Cu/ZIF‐8>PC Co/ZIF‐8>PC ZIF‐8 and qmax (Ni/ZIF‐8)> qmax (Cu/ZIF‐8)> qmax (Co/ZIF‐8)> qmax (ZIF‐8) for both 10% and 100% BT. The prepared adsorbents had the FoMs ranging from 0.05‐0.07 that compared to other adsorbents showed the beneficial use for large scale desulfurization process. The endothermic behavior and a homogeneous adsorption was then indicated through thermodynamic and equilibrium studies.

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Section: Resultsmentioning

confidence: 99%

Experimental and Computational Study of Organic Sulfur Removal Proficiency of (Ni, Cu, Co)‐Doped ZIF‐8 Adsorbents

Saeedirad

Ganjali

Rashidi³

et al. 2020

ChemistrySelect

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“…The comparison of adsorption performances of Pb 2+ and Ni 2+ by the prepared MONPs-EG achieved in this study with other similar adsorbents under various experimental conditions are presented in Table 6. The MONPs-EG exhibited superior adsorption capacities, which are much higher than those of previous studies that used various adsorbent such as expanded graphite (EG) and its modifications (G-EG, P-EG) [57], manganese oxide-coated sand (MOCS) [21,24], manganese oxide coated crushed brick (MOCB) [21], and manganese oxide-coated zeolite (MOCZ) [22,23]. This finding suggested the applicability of the coating process and the prepared MONPs-EG can serve as a competent adsorbent for removing heavy metals from the aquatic environment.…”

Section: Thermodynamic Studymentioning

confidence: 58%

“…This finding suggested the applicability of the coating process and the prepared MONPs-EG can serve as a competent adsorbent for removing heavy metals from the aquatic environment. Regarding the partition coefficient (PC), the higher value of PC is generally referred to as a good adsorption affinity [32,57]. However, our results found that the PC values are inversely proportional to the initial metals concentration in solution.…”

Section: Thermodynamic Studymentioning

confidence: 60%

Adsorption of Lead and Nickel on to Expanded Graphite Decorated with Manganese Oxide Nanoparticles

et al. 2019

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In this study, expanded graphite (EG) was decorated with manganese oxide nanoparticles (MONPs) by the hydrothermal method, and the newly formed composite (MONPs-EG) was applied as adsorbent for the removal of heavy metals from aqueous solutions. The comparative and competitive adsorption of Pb2+ and Ni2+ (0.01–1.00 mM) on MONPs-EG was investigated. Data from isothermal adsorption of single and binary systems suggested that both Pb2+ and Ni2+ were well described by the Langmuir isotherm, and the maximum adsorption capacities at 298 K were calculated at 0.278 and 0.113 mmol/g for Pb2+ and Ni2+, respectively. In binary systems, a dramatic decrease in adsorption capacity of Ni2+ was observed, while the adsorption capacity of Pb2+ was almost stable, indicating the favorable adsorption of Pb2+ over Ni2+ onto the prepared adsorbent. Kinetics studies of single and binary systems showed that a pseudo-second order model could explain the adsorption processes well. Thermodynamic analysis results demonstrated that the adsorption of these metal ions on the prepared adsorbent is spontaneous and exothermic in nature. The adsorption capacity of MONPs-EG increased significantly in the presence of humic acids. Overall, the results of this study suggest that MONPs-EG can be used effectively as an adsorbent for heavy metals removal from aqueous solutions.

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“…Also, n and k f in Equation () are the adsorption intensity (mg/g)/(mg/L) −1/ n and Freundlich constant, respectively. These equations were modified using the partition coefficient (PC) to reduce bias in the isotherm model evaluation (Al‐Wabel, Elfaki, Usman, Hussain, & Ok, 2019; Kim et al., 2019; Na, Yoo, Tsang, Kim, & Kim, 2019; Szulejko, Kim, & Parise, 2019; Vikrant & Kim, 2019). For a reversible system and independent of the sorbate concentration, PC can be calculated as follows (Khayyun & Mseer, 2019):

P C = \frac{q_{e}}{C_{e}}

…”

Section: Resultsmentioning

confidence: 99%

Adsorptive removal of enrofloxacin with magnetic functionalized graphene oxide@ metal–organic frameworks employing D‐optimal mixture design

Gordi

Ghorbani

Khakhiyani

2020

Water Environment Research

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A novel sorbent based on a mixture of magnetic functionalized graphene oxide and MOFs was developed to remove enrofloxacin (EFX) from water samples. The prepared sorbent was characterized using Fourier transform infrared spectra, scanning electron microscope images, and X‐ray powder diffraction pattern. The sorbent compositions were optimized by the mixture experimental design. Under the optimal condition, the percentages of each sorbent component, including triethylene tetramine‐functionalized graphene oxide (FGO), Fe3O4, and MOF‐5, were 40%, 21%, and 39%, respectively. Besides, the intraparticle diffusion and pseudo‐second‐order kinetic models can describe the EFX adsorption procedure because of two adsorption mechanisms of EFX on FGO and MOF‐5. A positive standard enthalpy of 49.80 kJ/mol indicated the EFX adsorption is endothermic with a chemisorption process. The negative values of ΔGo obtained in the range of −8.979 to −3.431 kJ/mol at all studied temperatures showed that the adsorption process was also spontaneous. The Langmuir and Freundlich isotherm models were analyzed with the partition coefficient to reduce bias in the isotherm model evaluation. The maximum adsorption capacity of 344.83 mg/g and a high partition coefficient of 17.42 g/L in an initial EFX concentration of 10 mg/L were obtained for the EFX removal. Practitioner points Magnetic functionalized graphene oxide @MOF‐5 as a sorbent for the enrofloxacin removal is synthesized. The percentage amount of each component of the sorbent is optimized using the D‐optimal mixture design. Adsorption mechanisms of enrofloxacin on magnetic functionalized graphene oxide @MOF‐5 are discussed. Thermodynamic parameters for the enrofloxacin adsorption with the sorbents are determined. Isotherm model for the enrofloxacin removal with the sorbent is investigated.

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Performance of dry water- and porous carbon-based sorbents for carbon dioxide capture

Cited by 69 publications

References 67 publications

Experimental and Computational Study of Organic Sulfur Removal Proficiency of (Ni, Cu, Co)‐Doped ZIF‐8 Adsorbents

Experimental and Computational Study of Organic Sulfur Removal Proficiency of (Ni, Cu, Co)‐Doped ZIF‐8 Adsorbents

Adsorption of Lead and Nickel on to Expanded Graphite Decorated with Manganese Oxide Nanoparticles

Adsorptive removal of enrofloxacin with magnetic functionalized graphene oxide@ metal–organic frameworks employing D‐optimal mixture design

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