Effects of heat-activated persulfate oxidation on soil microorganisms

Aikaterini Tsitonaki, Barth F. Smets, Poul Løgstrup Bjerg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effects of heat-activated persulfate on indigenous microorganisms and microcosms augmented with Pseudomonas putida KT2440 were studied in laboratory batch reactors with aquifer material. Microscopic enumeration was used to measure the changes in cell density, and acetate consumption was used to evaluate metabolic activity after exposure to activated persulfate. The cell enumerations showed that persulfate concentrations up to 10 g/L did not affect the indigenous microorganisms but were detrimental to P. putida survival. Acetate consumption was inhibited at the highest persulfate dose (10 g/L). The results emphasize the necessity of using multiple toxicity assays and indigenous cultures in order to realistically assess the potential effects of in situ chemical oxidation on soil microorganisms. A comparison to other studies suggests that the effects of activated persulfate on soil microorganisms are less damaging than those of Fenton's reagent and hydrogen peroxide.
Original languageEnglish
JournalWater Research
Volume42
Issue number4-5
Pages (from-to)1013-1022
ISSN0043-1354
DOIs
Publication statusPublished - 2008

Cite this

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title = "Effects of heat-activated persulfate oxidation on soil microorganisms",
abstract = "The effects of heat-activated persulfate on indigenous microorganisms and microcosms augmented with Pseudomonas putida KT2440 were studied in laboratory batch reactors with aquifer material. Microscopic enumeration was used to measure the changes in cell density, and acetate consumption was used to evaluate metabolic activity after exposure to activated persulfate. The cell enumerations showed that persulfate concentrations up to 10 g/L did not affect the indigenous microorganisms but were detrimental to P. putida survival. Acetate consumption was inhibited at the highest persulfate dose (10 g/L). The results emphasize the necessity of using multiple toxicity assays and indigenous cultures in order to realistically assess the potential effects of in situ chemical oxidation on soil microorganisms. A comparison to other studies suggests that the effects of activated persulfate on soil microorganisms are less damaging than those of Fenton's reagent and hydrogen peroxide.",
author = "Aikaterini Tsitonaki and Smets, {Barth F.} and Bjerg, {Poul L{\o}gstrup}",
year = "2008",
doi = "10.1016/j.watres.2007.09.018",
language = "English",
volume = "42",
pages = "1013--1022",
journal = "Water Research",
issn = "0043-1354",
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Effects of heat-activated persulfate oxidation on soil microorganisms. / Tsitonaki, Aikaterini; Smets, Barth F.; Bjerg, Poul Løgstrup.

In: Water Research, Vol. 42, No. 4-5, 2008, p. 1013-1022.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effects of heat-activated persulfate oxidation on soil microorganisms

AU - Tsitonaki, Aikaterini

AU - Smets, Barth F.

AU - Bjerg, Poul Løgstrup

PY - 2008

Y1 - 2008

N2 - The effects of heat-activated persulfate on indigenous microorganisms and microcosms augmented with Pseudomonas putida KT2440 were studied in laboratory batch reactors with aquifer material. Microscopic enumeration was used to measure the changes in cell density, and acetate consumption was used to evaluate metabolic activity after exposure to activated persulfate. The cell enumerations showed that persulfate concentrations up to 10 g/L did not affect the indigenous microorganisms but were detrimental to P. putida survival. Acetate consumption was inhibited at the highest persulfate dose (10 g/L). The results emphasize the necessity of using multiple toxicity assays and indigenous cultures in order to realistically assess the potential effects of in situ chemical oxidation on soil microorganisms. A comparison to other studies suggests that the effects of activated persulfate on soil microorganisms are less damaging than those of Fenton's reagent and hydrogen peroxide.

AB - The effects of heat-activated persulfate on indigenous microorganisms and microcosms augmented with Pseudomonas putida KT2440 were studied in laboratory batch reactors with aquifer material. Microscopic enumeration was used to measure the changes in cell density, and acetate consumption was used to evaluate metabolic activity after exposure to activated persulfate. The cell enumerations showed that persulfate concentrations up to 10 g/L did not affect the indigenous microorganisms but were detrimental to P. putida survival. Acetate consumption was inhibited at the highest persulfate dose (10 g/L). The results emphasize the necessity of using multiple toxicity assays and indigenous cultures in order to realistically assess the potential effects of in situ chemical oxidation on soil microorganisms. A comparison to other studies suggests that the effects of activated persulfate on soil microorganisms are less damaging than those of Fenton's reagent and hydrogen peroxide.

U2 - 10.1016/j.watres.2007.09.018

DO - 10.1016/j.watres.2007.09.018

M3 - Journal article

VL - 42

SP - 1013

EP - 1022

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - 4-5

ER -