Adsorption equilibrium of phenol onto chemically modified activated carbon F400

Cañizares, Pablo; Carmona, Manuel; Baraza, Olga; Delgado, Alberto; Rodrigo, Manuel A.

doi:10.1016/j.jhazmat.2005.09.037

Cited by 78 publications

(37 citation statements)

References 29 publications

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“…Protons in -СН 2 -СООR (18, 26) give singlet at 2.15 ppm. The proton signals in -СН 2 -group of ACA (5,6,7,8,15,16,17,23,24,25) …”

Section: Water-soluble Blocked Isocyanatesmentioning

confidence: 99%

“…When pH of the solution goes beyond 9.9 value, phenols exist mainly as negative phenolate ions. In the solution with pH below 9.9 phenols are molecules [12,13].…”

Section: Effect Of Ph On Phenol Sorption Onto Glycopolymersmentioning

confidence: 99%

“…In appropriate circumstances, the phenolic compounds contained in wastewaters can be economically recovered. The two best methods to treat these wastes are their destruction by chemical oxidation techniques or by adsorption [1][2][3][4][5][6][7][8]. It should be noted that adsorption is more preferable due to its potential to remove both organic and inorganic constituents, even at low concentrations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation and Characterization of Phenol Sorbents Based on Konjac Glucomannan and Water-Soluble Blocked Isocyanates

Didenko¹,

Козак²,

Klepko³

2017

ChChT

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Abstract.1 In this work water-soluble blocked alkyl-or aryl-diisocyanate and glycopolymers based on konjac glucomannan and the blocked diisocyanate were synthesized and characterized. Their phenol sorption ability has been studied. Adsorption experiments were carried out to evaluate the effects of structure of isocyanate, polysaccharide hydroxyl group substitution degree, solution pH, contact time, on the phenol removal efficiency. Langmuir and Freundlich models were applied to describe the adsorption isotherms of phenol, and adsorption parameters were evaluated. The determined values of adsorption capacities vary from 12.8 to 25.0 mg/g depending on diisocyanate structure and polysaccharide group substitution degree. It was shown that neutral and weakly alkali mediums are favourable for phenol adsorption by the new glycopolymers.

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“…Protons in -СН 2 -СООR (18, 26) give singlet at 2.15 ppm. The proton signals in -СН 2 -group of ACA (5,6,7,8,15,16,17,23,24,25) …”

Section: Water-soluble Blocked Isocyanatesmentioning

confidence: 99%

“…When pH of the solution goes beyond 9.9 value, phenols exist mainly as negative phenolate ions. In the solution with pH below 9.9 phenols are molecules [12,13].…”

Section: Effect Of Ph On Phenol Sorption Onto Glycopolymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and Characterization of Phenol Sorbents Based on Konjac Glucomannan and Water-Soluble Blocked Isocyanates

Didenko¹,

Козак²,

Klepko³

2017

ChChT

View full text Add to dashboard Cite

show abstract

“…It usually enters water sources from various chemicals, pesticides, paper, pulp and dye manufacturing industries, wastewaters from industries such as gas, resin, tanning, textile, plastic, rubber, pharmaceutical and petroleum [4]. The appreciable solubility of this compound in water, combined with its high reactivity and resistance to Manuscript received April 8, 2014; revised June 9, 2014 biodegradation, make it an important toxic material listed as a priority pollutant to be monitored in the aquatic environment [5].…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Activated Carbons Prepared by Thermo-Chemical Activation of Lignocellulosic Residues in Fixed Bed Column Studies

Alves¹,

Faustino²,

Franca³

et al. 2015

IJET

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Abstract-This paper presents a comparative evaluation of two activated carbons produced from different lignocellulosic residues (spent coffee grounds and Raphanus Sativus press cake), as adsorbents for removal of phenol from aqueous solutions in fixed-bed column studies. Both the prepared adsorbents presented outstanding adsorption capacities when compared to other low-cost adsorbents presented in the literature. Breakthrough curves were produced and several breakthrough models were evaluated for adequate description of the adsorption process in the column, with the Dose-Response model presenting the best fit to the experimental data.

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“…Phenol is frequently derived from petrochemicals, plastics, paints, pharmaceutical and steel industries (CANIZARES et al, 2006). Excessive presence of phenol and its derivatives in natural water is considered as a serious threat to human health and overall water quality (BHATNAGAR, 2007).…”

Section: Introductionmentioning

confidence: 99%

Use of sawdust Eucalyptus sp. in the preparation of activated carbons

et al. 2012

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Wood sawdust is a solid residue, generated in the timber industry, which is of no profitable use and can cause serious environmental problems if disposed inadequately. The aim of this study was to use the eucalyptus sawdust in the preparation of activated carbons AC) and test them as adsorbents of methylene blue (MB) and phenol, representative pollutants from aqueous effluents of various industries. The eucalyptus sawdust was characterized by instrumental analysis such as elementary analysis (CHNS-O), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM , respectively, for MB and phenol).Index terms: Agro-industrial residues, adsorbents, pollutants. RESUMOA serragem é um resíduo sólido, gerado na indústria madeireira, que não tem uso rentável e pode causar sérios problemas ambientais quando disposta inadequadamente. Neste estudo, objetivou-se utilizar a serragem de eucalipto na preparação de carvões ativados (AC) e testá-los como adsorventes do corante azul de metileno (MB) e fenol; moléculas que representam poluentes de efluentes industriais. A serragem de eucalipto foi caracterizada por análises instrumentais, tais como: análise elementar (CHNS-O), análise termogravimétrica (TGA), espectroscopia na região do infravermelho (FTIR) e microscopia eletrônica de varredura (SEM). Os carvões ativados foram preparados por ativação física com dióxido de carbono AC_CO 2 , (10º Cmin , respectivamente, para MB e fenol). Termos para indexação:Resíduos agroindustriais, adsorventes, poluentes.

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Adsorption equilibrium of phenol onto chemically modified activated carbon F400

Cited by 78 publications

References 29 publications

Preparation and Characterization of Phenol Sorbents Based on Konjac Glucomannan and Water-Soluble Blocked Isocyanates

Preparation and Characterization of Phenol Sorbents Based on Konjac Glucomannan and Water-Soluble Blocked Isocyanates

Comparative Evaluation of Activated Carbons Prepared by Thermo-Chemical Activation of Lignocellulosic Residues in Fixed Bed Column Studies

Use of sawdust Eucalyptus sp. in the preparation of activated carbons

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