Removal of ammoniacal nitrogen and COD from semi-aerobic landfill leachate using low-cost activated carbon zeolite composite adsorbent

Azhar Abdul Halim, Hamidi Abdul Aziz, Megat Azmi Megat Johari, Kamar Shah Ariffin, Yung Tse Hung

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A carbon-zeolite composite adsorbent has been studied for COD and ammoniacal nitrogen removal in semi-aerobic landfill leachate. The optimum conditions for adsorption in the batch study occurred at pH 7, shaking speed of 200 rpm, and contact time of 105 min. The Langmuir isotherms corresponded slightly better than Freundlich isotherm for both ammoniacal nitrogen and COD removals. The Langmuir adsorption capacities for ammonia and COD were 27.47 mg/g and 22.99 mg/g, while the Freundlich adsorption capacities were 0.4227 mg/g and 0.0642 mg/g, respectively. The overall rate of the ammonia and COD adsorption processes appears to be dominated by chemisorption process.

Original languageEnglish
Pages (from-to)399-411
Number of pages13
JournalInternational Journal of Environment and Waste Management
Volume4
Issue number3-4
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

Land fill
zeolite
Activated carbon
Adsorbents
activated carbon
Nitrogen
adsorption
Adsorption
nitrogen
Composite materials
cost
Isotherms
Costs
Ammonia
isotherm
ammonia
Nitrogen removal
Chemisorption
Carbon
removal

Keywords

  • Adsorption isotherm
  • Ammoniacal nitrogen
  • Chemical oxygen demand
  • COD
  • Composite adsorbent
  • Leachate treatment
  • Physico-chemical treatment
  • Semi-aerobic landfill leachate

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Removal of ammoniacal nitrogen and COD from semi-aerobic landfill leachate using low-cost activated carbon zeolite composite adsorbent. / Abdul Halim, Azhar; Aziz, Hamidi Abdul; Johari, Megat Azmi Megat; Ariffin, Kamar Shah; Hung, Yung Tse.

In: International Journal of Environment and Waste Management, Vol. 4, No. 3-4, 2009, p. 399-411.

Research output: Contribution to journalArticle

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