In-place regeneration of SVE-loaded GAC using Fenton's reagents

Carla L. De Las Casas, Kurt G. Bishop, Lisa M. Bercik, Wendell P Ela, Avelino E Saez, Scott G. Huling, Robert G Arnold

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The feasibility of Fenton's reaction as an in-place chemical regeneration process for granular activated carbon (GAC) was studied. Methods were investigated for enhancing the rate of Fenton-dependent regeneration of halogenated VOC-loaded GAC. The target organic compounds (methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene (TCE), and tetrachloroethylene (PCE)) were analyzed by GC-ECD according to a modified version of EPA method 551.1. For each of the compounds tested, the rate of disappearance of the adsorbed contaminant was approximately proportional to its adsorbed concentration. All compounds exhibited pseudo first-order kinetics through much of their observed range. However, the observed pseudo first-order reaction rate constant for TCE was 0.045/hr, or less than one-third that of methylene chloride. The observed reaction rate constants were strongly correlated to contaminant solubility. The most soluble, methylene chloride, was 89% degraded during a 14-hr regeneration period. In the field trials, the halogenated organics (predominantly TCE and PCE) sorbed out of a gas-phase soil vapor extraction stream onto the GAC in a packed bed. Upon saturation, the GAC was regenerated (analogous to the laboratory trials) using Fenton's reagents in an aqueous-stream capable of expanding the bed in an up-flow mode. Preliminary results at the field site using the Fenton treatment indicated that at least 80% TCE destruction is achieved during a 6-hr regeneration period. Preliminary results indicated that H2O2 usage in the field is higher than expected from the laboratory trials. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).

Original languageEnglish (US)
Title of host publicationACS, Division of Environmental Chemistry - Preprints of Extended Abstracts
Pages648-653
Number of pages6
Volume44
Edition2
StatePublished - 2004
Event228th ACS National Meeting - Philadelphia, PA, United States
Duration: Aug 22 2004Aug 26 2004

Other

Other228th ACS National Meeting
CountryUnited States
CityPhiladelphia, PA
Period8/22/048/26/04

Fingerprint

Trichloroethylene
Activated carbon
Dichloromethane
Reaction rates
Rate constants
Impurities
Carbon tetrachloride
Packed beds
Chlorine compounds
Volatile organic compounds
Organic compounds
Solubility
Vapors
Soils
Kinetics
Gases

ASJC Scopus subject areas

  • Energy(all)

Cite this

De Las Casas, C. L., Bishop, K. G., Bercik, L. M., Ela, W. P., Saez, A. E., Huling, S. G., & Arnold, R. G. (2004). In-place regeneration of SVE-loaded GAC using Fenton's reagents. In ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts (2 ed., Vol. 44, pp. 648-653)

In-place regeneration of SVE-loaded GAC using Fenton's reagents. / De Las Casas, Carla L.; Bishop, Kurt G.; Bercik, Lisa M.; Ela, Wendell P; Saez, Avelino E; Huling, Scott G.; Arnold, Robert G.

ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. Vol. 44 2. ed. 2004. p. 648-653.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

De Las Casas, CL, Bishop, KG, Bercik, LM, Ela, WP, Saez, AE, Huling, SG & Arnold, RG 2004, In-place regeneration of SVE-loaded GAC using Fenton's reagents. in ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. 2 edn, vol. 44, pp. 648-653, 228th ACS National Meeting, Philadelphia, PA, United States, 8/22/04.
De Las Casas CL, Bishop KG, Bercik LM, Ela WP, Saez AE, Huling SG et al. In-place regeneration of SVE-loaded GAC using Fenton's reagents. In ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. 2 ed. Vol. 44. 2004. p. 648-653
De Las Casas, Carla L. ; Bishop, Kurt G. ; Bercik, Lisa M. ; Ela, Wendell P ; Saez, Avelino E ; Huling, Scott G. ; Arnold, Robert G. / In-place regeneration of SVE-loaded GAC using Fenton's reagents. ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts. Vol. 44 2. ed. 2004. pp. 648-653
@inproceedings{a40eea12fab5454381db2d4e00d984c4,
title = "In-place regeneration of SVE-loaded GAC using Fenton's reagents",
abstract = "The feasibility of Fenton's reaction as an in-place chemical regeneration process for granular activated carbon (GAC) was studied. Methods were investigated for enhancing the rate of Fenton-dependent regeneration of halogenated VOC-loaded GAC. The target organic compounds (methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene (TCE), and tetrachloroethylene (PCE)) were analyzed by GC-ECD according to a modified version of EPA method 551.1. For each of the compounds tested, the rate of disappearance of the adsorbed contaminant was approximately proportional to its adsorbed concentration. All compounds exhibited pseudo first-order kinetics through much of their observed range. However, the observed pseudo first-order reaction rate constant for TCE was 0.045/hr, or less than one-third that of methylene chloride. The observed reaction rate constants were strongly correlated to contaminant solubility. The most soluble, methylene chloride, was 89{\%} degraded during a 14-hr regeneration period. In the field trials, the halogenated organics (predominantly TCE and PCE) sorbed out of a gas-phase soil vapor extraction stream onto the GAC in a packed bed. Upon saturation, the GAC was regenerated (analogous to the laboratory trials) using Fenton's reagents in an aqueous-stream capable of expanding the bed in an up-flow mode. Preliminary results at the field site using the Fenton treatment indicated that at least 80{\%} TCE destruction is achieved during a 6-hr regeneration period. Preliminary results indicated that H2O2 usage in the field is higher than expected from the laboratory trials. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).",
author = "{De Las Casas}, {Carla L.} and Bishop, {Kurt G.} and Bercik, {Lisa M.} and Ela, {Wendell P} and Saez, {Avelino E} and Huling, {Scott G.} and Arnold, {Robert G}",
year = "2004",
language = "English (US)",
volume = "44",
pages = "648--653",
booktitle = "ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts",
edition = "2",

}

TY - GEN

T1 - In-place regeneration of SVE-loaded GAC using Fenton's reagents

AU - De Las Casas, Carla L.

AU - Bishop, Kurt G.

AU - Bercik, Lisa M.

AU - Ela, Wendell P

AU - Saez, Avelino E

AU - Huling, Scott G.

AU - Arnold, Robert G

PY - 2004

Y1 - 2004

N2 - The feasibility of Fenton's reaction as an in-place chemical regeneration process for granular activated carbon (GAC) was studied. Methods were investigated for enhancing the rate of Fenton-dependent regeneration of halogenated VOC-loaded GAC. The target organic compounds (methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene (TCE), and tetrachloroethylene (PCE)) were analyzed by GC-ECD according to a modified version of EPA method 551.1. For each of the compounds tested, the rate of disappearance of the adsorbed contaminant was approximately proportional to its adsorbed concentration. All compounds exhibited pseudo first-order kinetics through much of their observed range. However, the observed pseudo first-order reaction rate constant for TCE was 0.045/hr, or less than one-third that of methylene chloride. The observed reaction rate constants were strongly correlated to contaminant solubility. The most soluble, methylene chloride, was 89% degraded during a 14-hr regeneration period. In the field trials, the halogenated organics (predominantly TCE and PCE) sorbed out of a gas-phase soil vapor extraction stream onto the GAC in a packed bed. Upon saturation, the GAC was regenerated (analogous to the laboratory trials) using Fenton's reagents in an aqueous-stream capable of expanding the bed in an up-flow mode. Preliminary results at the field site using the Fenton treatment indicated that at least 80% TCE destruction is achieved during a 6-hr regeneration period. Preliminary results indicated that H2O2 usage in the field is higher than expected from the laboratory trials. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).

AB - The feasibility of Fenton's reaction as an in-place chemical regeneration process for granular activated carbon (GAC) was studied. Methods were investigated for enhancing the rate of Fenton-dependent regeneration of halogenated VOC-loaded GAC. The target organic compounds (methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene (TCE), and tetrachloroethylene (PCE)) were analyzed by GC-ECD according to a modified version of EPA method 551.1. For each of the compounds tested, the rate of disappearance of the adsorbed contaminant was approximately proportional to its adsorbed concentration. All compounds exhibited pseudo first-order kinetics through much of their observed range. However, the observed pseudo first-order reaction rate constant for TCE was 0.045/hr, or less than one-third that of methylene chloride. The observed reaction rate constants were strongly correlated to contaminant solubility. The most soluble, methylene chloride, was 89% degraded during a 14-hr regeneration period. In the field trials, the halogenated organics (predominantly TCE and PCE) sorbed out of a gas-phase soil vapor extraction stream onto the GAC in a packed bed. Upon saturation, the GAC was regenerated (analogous to the laboratory trials) using Fenton's reagents in an aqueous-stream capable of expanding the bed in an up-flow mode. Preliminary results at the field site using the Fenton treatment indicated that at least 80% TCE destruction is achieved during a 6-hr regeneration period. Preliminary results indicated that H2O2 usage in the field is higher than expected from the laboratory trials. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).

UR - http://www.scopus.com/inward/record.url?scp=23644441513&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23644441513&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:23644441513

VL - 44

SP - 648

EP - 653

BT - ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts

ER -