pH dependence of chlordecone adsorption on activated carbons and role of adsorbent physico-chemical properties

Durimel, Axelle; Altenor, Sandro; Miranda‐Quintana, Ramón Alain; Mesnil, Pierre Couespel du; Jäuregui‐Haza, Ulises; Gadiou, Roger; Gaspard, Sarra

doi:10.1016/j.cej.2013.03.036

Cited by 39 publications

(40 citation statements)

References 43 publications

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“…This feature is the source of its high adsorption capacity. Factors affecting adsorption type are pore structure, surface chemistry, and adsorbent properties [7][8][9][10][11][12][13][14]. Basically, the type of porosity is mainly determined by the type of precursor employed; however, the method of activation is another parameter which may influence the final pore size distribution [15,16].…”

Section: Introductionmentioning

confidence: 99%

Comparative studies of porous carbon nanofibers by various activation methods

Lee¹,

Kang²,

An³

et al. 2013

Carbon letters

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In this study, activated carbons nanofibers (ACNFs) were prepared from polyacrylonitrilebased nanofibers by physical (H 2 O and CO 2 ) and chemical (KOH) activation. The surface and structural characteristics of the porous carbon were observed by scanning electron microscopy and X-ray diffraction, respectively. Pore characteristics were investigated by N 2 /77K adsorption isotherms. The specific surface area of the physically ACNFs was increased up to 2400 m 2 /g and the ACNFs were found to be mainly composed of micropore structures. Chemical activation using KOH produced ACNFs with high specific surface area (up to 2500 m 2 /g), and the micropores were mainly found in the ACNFs. The physically and chemically ACNFs showed both mainly type I from the International Union of Pure and Applied Chemistry classification.

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Section: Introductionmentioning

confidence: 99%

Comparative studies of porous carbon nanofibers by various activation methods

Lee¹,

Kang²,

An³

et al. 2013

Carbon letters

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“…For these models of carbon based materials, small polycycles and their oxidized derivatives are a common choice [14,16,[30][31][32][33][34][35][36][37][38][39][40]. In fact coronene has repeatedly been employed for such idealized models [32,[35][36][37].…”

Section: Computational Detailsmentioning

confidence: 98%

“…The influence of surface groups (SG) content of AC over adsorption properties has been reported and studied to some extent both theoretically and experimentally for porous carbons, mainly AC and soot particles [14][15][16][17][18][19]. In the experimental works, either commercial AC with different SG content have been used in order to correlate this content with the adsorption capacities, or designed and tested AC with different SG contents.…”

Section: Introductionmentioning

confidence: 99%

“…MMH is a non-dynamical stochastic approach that allows estimating the thermodynamic association functions by means of the internal energy calculations with semiempirical Hamiltonians. In previous works, exploring the interactions space through MMH methodology have helped to identify the main interactions responsible for chlordecone [16] and hexachlorocyclohexane isomers adsorption in similar systems [30].…”

Section: Introductionmentioning

confidence: 99%

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Interaction of paracetamol and 125I-paracetamol with surface groups of activated carbon: theoretical and experimental study

Hernández-Valdés

Enríquez-Victorero

Pizarro-Lou³

et al. 2015

J Radioanal Nucl Chem

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The selection of activated carbon (AC) filters for water decontamination is currently carried out empirically. The low concentrations of drugs in the environment make the radioisotope labeling a valuable tool for physical and chemical studies of the adsorption process. A theoretical study of paracetamol and 125 I-paracetamol adsorption onto AC was performed to evaluate the interactions between pollutants and surface groups (SG) of AC. Paracetamol was labeled with 125 I and adsorption isotherms were obtained using radioanalytical and spectrophotometric techniques. The radioanalytical method overestimates the paracetamol adsorption. The validity of the chosen approach for qualitative assessment of SG influence over the adsorption process was demonstrated.

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“…However, recent findings indicate that chlordecone is degraded in small level by microorganisms in tropical soil; however, they have not been discovered yet (Fernández-Bayo et al 2013). Nevertheless, population that may be exposed to this POP should rely on minimal consumption of potentially contaminated crops and on water filtered with active carbon filters (Durimel et al 2013).A very efficient method of kepone removal was established by Rana et al (2017), with adsorbent consisting of iron oxyhydroxide/iron oxide nanoparticles and activated carbon, capable of adsorbing up to 79.8 lg/mg of kepone.…”

Section: Degradation Of the Lindane Pentachlorobenzene And Keponementioning

confidence: 99%

Lindane, kepone and pentachlorobenzene: chloropesticides banned by Stockholm convention

Madaj

Sobiecka

Kalinowska

2017

Int. J. Environ. Sci. Technol.

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Persistent organic pollutants are a serious problem to the environment due to their toxicity to both fauna and flora. Extremely resistant to biodegradation and prone to transfer through long distances via atmosphere can contaminate almost any place in the planet. They tend to bioaccumulate in fat tissue due to their lipophilicity and seriously affect poisoned organism's nervous, hepatic, reproductive or hormonal system. Since 2009, due to the Stockholm convention on persistent organic pollutants production and utilisation of certain halogenated pesticides has been prohibited. This group includes hexachlorocyclohexane, chlordecone (kepone) and pentachlorobenzene. All of these chloropesticides pose a serious threat to environment, and careful control of their production and release to the environment is required. This paper is a review of physical and chemical properties as well as sources in environment, impact on animal organisms, methods of degradation of most broadly used chlorinated persistent organic pollutants and suggestions concerning their utilisation.

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pH dependence of chlordecone adsorption on activated carbons and role of adsorbent physico-chemical properties

Cited by 39 publications

References 43 publications

Comparative studies of porous carbon nanofibers by various activation methods

Comparative studies of porous carbon nanofibers by various activation methods

Interaction of paracetamol and 125I-paracetamol with surface groups of activated carbon: theoretical and experimental study

Lindane, kepone and pentachlorobenzene: chloropesticides banned by Stockholm convention

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