Abatement of Pollutants by Adsorption and Oxidative Catalytic Regeneration

Yurii I. Matatov-Meytal; Moshe Sheintuch

doi:10.1021/ie960809d

Abatement of Pollutants by Adsorption and Oxidative Catalytic Regeneration

Yurii I. Matatov-Meytal, Moshe Sheintuch^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

The adsorption of phenol, and halogenated phenols on granular activated carbon (AC) modified with metal oxide catalyst, followed by catalytic oxidative regeneration, was studied as an efficient technology for the treatment of dilute wastewaters. The advantages of the combination of these technologies are as follows: (1) the process will be accelerated by the high concentrations of pollutants eluted from the adsorbent; (2) a large number of adsorption-regeneration cycles are expected without loss in capacity; and (3) the low-temperature regeneration will be conducted in situ, even in small units, thus improving the economy of the process. Oxidative catalytic regeneration of spent carbons, performed at 240-300 °C with air, completely restored the adsorption capacity of phenol on the ACs modified with catalyst, even after 10 cycles of regeneration. Under similar conditions, only partial recovery of the adsorption capacity was obtained for carbons loaded with p-chlorophenol and p-bromophenol. The adsorption capacity and the surface area of the AC (Filtrasorb-400) diminished somewhat with the impregnation of oxides (Fe₂O₃, CuO, and additivities of Cr₂O₃ or inert silica), but that did not affect the shape of the adsorption isotherms.

Original language	English
Pages (from-to)	4374-4380
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	36
Issue number	10
DOIs	https://doi.org/10.1021/ie960809d
State	Published - 1997
Externally published	Yes

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title = "Abatement of Pollutants by Adsorption and Oxidative Catalytic Regeneration",

abstract = "The adsorption of phenol, and halogenated phenols on granular activated carbon (AC) modified with metal oxide catalyst, followed by catalytic oxidative regeneration, was studied as an efficient technology for the treatment of dilute wastewaters. The advantages of the combination of these technologies are as follows: (1) the process will be accelerated by the high concentrations of pollutants eluted from the adsorbent; (2) a large number of adsorption-regeneration cycles are expected without loss in capacity; and (3) the low-temperature regeneration will be conducted in situ, even in small units, thus improving the economy of the process. Oxidative catalytic regeneration of spent carbons, performed at 240-300 °C with air, completely restored the adsorption capacity of phenol on the ACs modified with catalyst, even after 10 cycles of regeneration. Under similar conditions, only partial recovery of the adsorption capacity was obtained for carbons loaded with p-chlorophenol and p-bromophenol. The adsorption capacity and the surface area of the AC (Filtrasorb-400) diminished somewhat with the impregnation of oxides (Fe2O3, CuO, and additivities of Cr2O3 or inert silica), but that did not affect the shape of the adsorption isotherms.",

author = "Matatov-Meytal, {Yurii I.} and Moshe Sheintuch",

year = "1997",

doi = "10.1021/ie960809d",

language = "英语",

volume = "36",

pages = "4374--4380",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

number = "10",

}

TY - JOUR

T1 - Abatement of Pollutants by Adsorption and Oxidative Catalytic Regeneration

AU - Matatov-Meytal, Yurii I.

AU - Sheintuch, Moshe

PY - 1997

Y1 - 1997

N2 - The adsorption of phenol, and halogenated phenols on granular activated carbon (AC) modified with metal oxide catalyst, followed by catalytic oxidative regeneration, was studied as an efficient technology for the treatment of dilute wastewaters. The advantages of the combination of these technologies are as follows: (1) the process will be accelerated by the high concentrations of pollutants eluted from the adsorbent; (2) a large number of adsorption-regeneration cycles are expected without loss in capacity; and (3) the low-temperature regeneration will be conducted in situ, even in small units, thus improving the economy of the process. Oxidative catalytic regeneration of spent carbons, performed at 240-300 °C with air, completely restored the adsorption capacity of phenol on the ACs modified with catalyst, even after 10 cycles of regeneration. Under similar conditions, only partial recovery of the adsorption capacity was obtained for carbons loaded with p-chlorophenol and p-bromophenol. The adsorption capacity and the surface area of the AC (Filtrasorb-400) diminished somewhat with the impregnation of oxides (Fe2O3, CuO, and additivities of Cr2O3 or inert silica), but that did not affect the shape of the adsorption isotherms.

AB - The adsorption of phenol, and halogenated phenols on granular activated carbon (AC) modified with metal oxide catalyst, followed by catalytic oxidative regeneration, was studied as an efficient technology for the treatment of dilute wastewaters. The advantages of the combination of these technologies are as follows: (1) the process will be accelerated by the high concentrations of pollutants eluted from the adsorbent; (2) a large number of adsorption-regeneration cycles are expected without loss in capacity; and (3) the low-temperature regeneration will be conducted in situ, even in small units, thus improving the economy of the process. Oxidative catalytic regeneration of spent carbons, performed at 240-300 °C with air, completely restored the adsorption capacity of phenol on the ACs modified with catalyst, even after 10 cycles of regeneration. Under similar conditions, only partial recovery of the adsorption capacity was obtained for carbons loaded with p-chlorophenol and p-bromophenol. The adsorption capacity and the surface area of the AC (Filtrasorb-400) diminished somewhat with the impregnation of oxides (Fe2O3, CuO, and additivities of Cr2O3 or inert silica), but that did not affect the shape of the adsorption isotherms.

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U2 - 10.1021/ie960809d

DO - 10.1021/ie960809d

M3 - 文章

AN - SCOPUS:0031254962

SN - 0888-5885

VL - 36

SP - 4374

EP - 4380

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 10

ER -

Abatement of Pollutants by Adsorption and Oxidative Catalytic Regeneration

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