Magnetic ion exchange treatment of stabilized landfill leachate

Treavor Boyer, Katherine C. Graf, Sarah E H Comstock, Timothy G. Townsend

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Stabilized landfill leachate is characterized by a high concentration of non-biodegradable organic matter, which is similar in chemistry to dissolved organic matter (DOM) in the natural aquatic environment. Magnetic ion exchange (MIEX) resin treatment is well-studied in drinking water for removal of DOM from natural waters. There are fewer studies evaluating MIEX treatment of waste waters, and there is no previous work evaluating MIEX treatment of landfill leachate. This work systematically evaluated MIEX treatment of stabilized landfill leachate and evaluated the results in the context of previous studies of MIEX treatment of natural and waste waters. Five leachates from four landfills were evaluated as a function of MIEX resin dose, mixing time, and regeneration efficiency. MIEX resin removed DOM from landfill leachate, even in the presence of a reported high background concentration of inorganic ions. MIEX resin that was exhausted with leachate DOM was effectively regenerated with a concentrated NaCl solution, and regenerated MIEX resin performed similarly to virgin resin. For a majority of the leachates, the removal trend for MIEX resin was color > UV-absorbing substances > dissolved organic carbon. ≈ COD > total nitrogen. Finally, MIEX resin removed a wider range of DOM from leachate than coagulation. The most important contribution of this work is that MIEX treatment of leachate followed very similar trends as MIEX treatment of natural waters, which will allow previous MIEX data to be used to estimate the treatment efficiency of other waste waters.

Original languageEnglish (US)
Pages (from-to)1220-1227
Number of pages8
JournalChemosphere
Volume83
Issue number9
DOIs
StatePublished - May 2011
Externally publishedYes

Fingerprint

Chemical Water Pollutants
Ion Exchange Resins
Ion exchange resins
Ion Exchange
Land fill
ion exchange
Ion exchange
Biological materials
Water Purification
resin
Waste Water
Wastewater
dissolved organic matter
leachate
Water
Organic carbon
landfill leachate
Coagulation
Potable water
Drinking Water

Keywords

  • Anion exchange
  • Cation exchange
  • Coagulation
  • Dissolved organic matter
  • MIEX
  • Non-biodegradable organic matter

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Medicine(all)

Cite this

Magnetic ion exchange treatment of stabilized landfill leachate. / Boyer, Treavor; Graf, Katherine C.; Comstock, Sarah E H; Townsend, Timothy G.

In: Chemosphere, Vol. 83, No. 9, 05.2011, p. 1220-1227.

Research output: Contribution to journalArticle

Boyer, Treavor ; Graf, Katherine C. ; Comstock, Sarah E H ; Townsend, Timothy G. / Magnetic ion exchange treatment of stabilized landfill leachate. In: Chemosphere. 2011 ; Vol. 83, No. 9. pp. 1220-1227.
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