Adsorption of Two Taste and Odor Compounds IPMP and IBMP by Granular Activated Carbon in Water

Na An, Hui Hui Xie, Nai Yun Gao, Yang Deng, Wen Hai Chu, Jin Jiang

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

Granular activated carbon (GAC) adsorption of two representative taste and odor (T & O) compounds, 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP), in drinking water was investigated. Results show that the modified Freundlich equation best fit the experimental data during the adsorption isotherm tests, and the pseudo first-order kinetics and intra-particle diffusion kinetics well described the adsorption kinetics pattern. The calculated thermodynamic parameters (ΔH0, ΔS0, and ΔG0) indicated a spontaneous and endothermic adsorption process. Factors affecting the treatment efficiency were carefully evaluated. Acidic and alkaline conditions both favored GAC adsorption of IPMP and IBMP, especially the former. With the GAC dosage increasing, the first order adsorption rates increased, while the intra-particle adsorption rates decreased. Within 12h, 200mg/L GAC could remove >90% of 150μg/L IPMP and IBMP via adsorption at pH 3-11. Therefore, GAC is a promising treatment technology to control the T & O compounds associated water pollution. Promising results show that granular activated carbon (GAC) is able to achieve a high removal of taste and odor compounds within few hours. The treatment efficiency depends on the GAC dose and solution pH. GAC could be a new and effective material to deal with emerging T & O issues frequently occurring in drinking water resources.

Original languageEnglish
Pages (from-to)1349-1356
Number of pages8
JournalClean - Soil, Air, Water
Volume40
Issue number12
DOIs
StatePublished - 1 Dec 2012

Fingerprint

Pyrazines
Odors
Activated carbon
odor
activated carbon
adsorption
Adsorption
Water
water
Potable water
Drinking Water
kinetics
Kinetics
drinking water
Water pollution
Water resources
Adsorption isotherms
water pollution
isotherm
thermodynamics

Keywords

  • 2-Isobutyl-3-methoxy pyrazine
  • 2-Isopropyl-3-methoxy pyrazine
  • Adsorption mechanism
  • Drinking water

Cite this

An, Na ; Xie, Hui Hui ; Gao, Nai Yun ; Deng, Yang ; Chu, Wen Hai ; Jiang, Jin. / Adsorption of Two Taste and Odor Compounds IPMP and IBMP by Granular Activated Carbon in Water. In: Clean - Soil, Air, Water. 2012 ; Vol. 40, No. 12. pp. 1349-1356.
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abstract = "Granular activated carbon (GAC) adsorption of two representative taste and odor (T & O) compounds, 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP), in drinking water was investigated. Results show that the modified Freundlich equation best fit the experimental data during the adsorption isotherm tests, and the pseudo first-order kinetics and intra-particle diffusion kinetics well described the adsorption kinetics pattern. The calculated thermodynamic parameters (ΔH0, ΔS0, and ΔG0) indicated a spontaneous and endothermic adsorption process. Factors affecting the treatment efficiency were carefully evaluated. Acidic and alkaline conditions both favored GAC adsorption of IPMP and IBMP, especially the former. With the GAC dosage increasing, the first order adsorption rates increased, while the intra-particle adsorption rates decreased. Within 12h, 200mg/L GAC could remove >90{\%} of 150μg/L IPMP and IBMP via adsorption at pH 3-11. Therefore, GAC is a promising treatment technology to control the T & O compounds associated water pollution. Promising results show that granular activated carbon (GAC) is able to achieve a high removal of taste and odor compounds within few hours. The treatment efficiency depends on the GAC dose and solution pH. GAC could be a new and effective material to deal with emerging T & O issues frequently occurring in drinking water resources.",
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Adsorption of Two Taste and Odor Compounds IPMP and IBMP by Granular Activated Carbon in Water. / An, Na; Xie, Hui Hui; Gao, Nai Yun; Deng, Yang; Chu, Wen Hai; Jiang, Jin.

In: Clean - Soil, Air, Water, Vol. 40, No. 12, 01.12.2012, p. 1349-1356.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Adsorption of Two Taste and Odor Compounds IPMP and IBMP by Granular Activated Carbon in Water

AU - An, Na

AU - Xie, Hui Hui

AU - Gao, Nai Yun

AU - Deng, Yang

AU - Chu, Wen Hai

AU - Jiang, Jin

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Y1 - 2012/12/1

N2 - Granular activated carbon (GAC) adsorption of two representative taste and odor (T & O) compounds, 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP), in drinking water was investigated. Results show that the modified Freundlich equation best fit the experimental data during the adsorption isotherm tests, and the pseudo first-order kinetics and intra-particle diffusion kinetics well described the adsorption kinetics pattern. The calculated thermodynamic parameters (ΔH0, ΔS0, and ΔG0) indicated a spontaneous and endothermic adsorption process. Factors affecting the treatment efficiency were carefully evaluated. Acidic and alkaline conditions both favored GAC adsorption of IPMP and IBMP, especially the former. With the GAC dosage increasing, the first order adsorption rates increased, while the intra-particle adsorption rates decreased. Within 12h, 200mg/L GAC could remove >90% of 150μg/L IPMP and IBMP via adsorption at pH 3-11. Therefore, GAC is a promising treatment technology to control the T & O compounds associated water pollution. Promising results show that granular activated carbon (GAC) is able to achieve a high removal of taste and odor compounds within few hours. The treatment efficiency depends on the GAC dose and solution pH. GAC could be a new and effective material to deal with emerging T & O issues frequently occurring in drinking water resources.

AB - Granular activated carbon (GAC) adsorption of two representative taste and odor (T & O) compounds, 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP), in drinking water was investigated. Results show that the modified Freundlich equation best fit the experimental data during the adsorption isotherm tests, and the pseudo first-order kinetics and intra-particle diffusion kinetics well described the adsorption kinetics pattern. The calculated thermodynamic parameters (ΔH0, ΔS0, and ΔG0) indicated a spontaneous and endothermic adsorption process. Factors affecting the treatment efficiency were carefully evaluated. Acidic and alkaline conditions both favored GAC adsorption of IPMP and IBMP, especially the former. With the GAC dosage increasing, the first order adsorption rates increased, while the intra-particle adsorption rates decreased. Within 12h, 200mg/L GAC could remove >90% of 150μg/L IPMP and IBMP via adsorption at pH 3-11. Therefore, GAC is a promising treatment technology to control the T & O compounds associated water pollution. Promising results show that granular activated carbon (GAC) is able to achieve a high removal of taste and odor compounds within few hours. The treatment efficiency depends on the GAC dose and solution pH. GAC could be a new and effective material to deal with emerging T & O issues frequently occurring in drinking water resources.

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U2 - 10.1002/clen.201200040

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JF - Clean - Soil, Air, Water

SN - 1863-0650

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