Semi-aerobic landfill leachate treatment using carbon-minerals composite adsorbent

Azhar Abdul Halim, Hamidi Abdul Aziz, Megat Azmi Megat Johari, Kamar Shah Ariffin, Mohammed J K Bashir

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Inorganic and organic pollutants continue to pose major problems in receiving water bodies. To overcome such problems, a new composite adsorbent material combining excellent properties of activated carbon, zeolite, and low cost adsorbents, that is, limestone and rice husk ash, was fabricated. The study also determined the capability of the new composite media to remove contaminants from semiaerobic stabilized landfill leachate. The process of identifying the optimum composition of the new adsorbent was carried out using batch technique. Further, isotherm study and regeneration of the media were investigated. Results indicated that there was favorable adsorption by both Langmuir and Freundlich isotherms. However, Langmuir isotherms were slightly better fitted for ammonia, chemical oxygen demand (COD), and color removal in terms of regression coefficients (R2). According to the Langmuir model, adsorption capacity of ammonia, COD, color, and iron reached 37.59 mg/g, 22.99 mg/g, 43.67 Pt-Co/g, and 0.12 mg/g, respectively. In addition, adsorption efficiency relative to fresh media, adsorption capacity for regenerated media to ammonia, COD, color, and iron reached 149.45%, 60.94%, 47.52%, and 75.0%, respectively.

Original languageEnglish
Pages (from-to)306-312
Number of pages7
JournalEnvironmental Engineering Science
Volume29
Issue number5
DOIs
Publication statusPublished - 1 May 2012

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Chemical Water Pollutants
Leachate treatment
Land fill
Adsorbents
Minerals
Chemical oxygen demand
Carbon
Ammonia
chemical oxygen demand
adsorption
Isotherms
Adsorption
isotherm
ammonia
carbon
Composite materials
mineral
Ashes
Iron
Color removal (water treatment)

Keywords

  • composite adsorbent
  • isotherm study
  • leachate treatment
  • semiaerobic landfill

ASJC Scopus subject areas

  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry

Cite this

Semi-aerobic landfill leachate treatment using carbon-minerals composite adsorbent. / Abdul Halim, Azhar; Aziz, Hamidi Abdul; Johari, Megat Azmi Megat; Ariffin, Kamar Shah; Bashir, Mohammed J K.

In: Environmental Engineering Science, Vol. 29, No. 5, 01.05.2012, p. 306-312.

Research output: Contribution to journalArticle

Abdul Halim, Azhar ; Aziz, Hamidi Abdul ; Johari, Megat Azmi Megat ; Ariffin, Kamar Shah ; Bashir, Mohammed J K. / Semi-aerobic landfill leachate treatment using carbon-minerals composite adsorbent. In: Environmental Engineering Science. 2012 ; Vol. 29, No. 5. pp. 306-312.
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