The removal of perchlorate from groundwater by activated carbon tailored with cationic surfactants

Robert Parette, Fred Scott Cannon

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

In rapid small-scale column tests, cationic surfactant-tailored activated carbons (ACs) effectively removed perchlorate to below detection levels for up to 30 times longer than virgin AC. By pre-loading bituminous AC with dicocodimethylammonium chloride, tallowtrimethylammonium chloride, cetyltrimethylammonium chloride, or cetylpyridinium chloride, 75 ppb perchlorate was removed for 27,000-35,000 bed volumes before the effluent perchlorate rose above 1 ppb. These tests employed a natural groundwater that also contained 30 mg/L sulfate, 26 mg/L nitrate (as NO3 -), and other ions. By the time of 25 ppb perchlorate breakthrough, 7.3-10.1% of quaternary ammonium sites had perchlorate associated with them. Although some of the surfactants leached out of the tailored carbon beds (0.6-21.2% of the amount loaded), the leached surfactant could be removed to below detectable limits with a virgin AC polishing bed that chased the tailored bed.

Original languageEnglish (US)
Pages (from-to)4020-4028
Number of pages9
JournalWater Research
Volume39
Issue number16
DOIs
StatePublished - Oct 1 2005

Fingerprint

perchlorate
Cationic surfactants
Activated carbon
activated carbon
surfactant
Groundwater
groundwater
chloride
Surface active agents
Polishing
Effluents
Nitrates
ammonium
Carbon
removal
effluent
sulfate
Ions
nitrate
ion

All Science Journal Classification (ASJC) codes

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

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The removal of perchlorate from groundwater by activated carbon tailored with cationic surfactants. / Parette, Robert; Cannon, Fred Scott.

In: Water Research, Vol. 39, No. 16, 01.10.2005, p. 4020-4028.

Research output: Contribution to journalArticle

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