Ammonia and COD removal from synthetic leachate using rice husk composite adsorbent

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18 Citations (Scopus)

Abstract

Ammonia and chemical oxygen demand (COD) were the most two problematic parameters in the landfill leachate. In this study, a new composite adsorbent derived from rice husk ash waste is evaluated with respect to its ability to remove these contaminants from synthetic leachate. Results indicate that the new composite adsorbent is able to adsorb both ammonia and COD. It has a higher adsorption capacity for ammonia (Q = 2.2578 mg/g) and an almost equal adsorption capacity for COD (Q = 2.8893) when compared with commercially activated carbon. The adsorption kinetics of this new product for ammonia and COD were primarily represented by the pseudo second-order mechanism. The overall adsorption rate of the ammonia and COD adsorption processes appears to be determined by chemisorption process. The regenerated composite adsorbent indicated higher adsorption capacities of ammonia and COD, i.e. 12.9366 mg/g and 3.1162 mg/g, respectively.

Original languageEnglish
Pages (from-to)24-31
Number of pages8
JournalJournal of Urban and Environmental Engineering
Volume5
Issue number1
DOIs
Publication statusPublished - 2011

Fingerprint

Chemical oxygen demand
chemical oxygen demand
Adsorbents
leachate
Ammonia
rice
ammonia
adsorption
Adsorption
demand
Composite materials
Ashes
Chemisorption
Land fill
Activated carbon
activated carbon
removal
ash
Impurities
kinetics

Keywords

  • Ammonia and COD removal
  • Composite adsorbent
  • Rice husk
  • Synthetic leachate

ASJC Scopus subject areas

  • Environmental Engineering
  • Urban Studies

Cite this

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title = "Ammonia and COD removal from synthetic leachate using rice husk composite adsorbent",
abstract = "Ammonia and chemical oxygen demand (COD) were the most two problematic parameters in the landfill leachate. In this study, a new composite adsorbent derived from rice husk ash waste is evaluated with respect to its ability to remove these contaminants from synthetic leachate. Results indicate that the new composite adsorbent is able to adsorb both ammonia and COD. It has a higher adsorption capacity for ammonia (Q = 2.2578 mg/g) and an almost equal adsorption capacity for COD (Q = 2.8893) when compared with commercially activated carbon. The adsorption kinetics of this new product for ammonia and COD were primarily represented by the pseudo second-order mechanism. The overall adsorption rate of the ammonia and COD adsorption processes appears to be determined by chemisorption process. The regenerated composite adsorbent indicated higher adsorption capacities of ammonia and COD, i.e. 12.9366 mg/g and 3.1162 mg/g, respectively.",
keywords = "Ammonia and COD removal, Composite adsorbent, Rice husk, Synthetic leachate",
author = "{Abdul Halim}, Azhar and Abidin, {Noor Nazurah Zainal} and Normah Awang and Anuar Ithnin and Othman, {Mohd. Sham} and {A Wahab}, {Muhammad Ikram}",
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TY - JOUR

T1 - Ammonia and COD removal from synthetic leachate using rice husk composite adsorbent

AU - Abdul Halim, Azhar

AU - Abidin, Noor Nazurah Zainal

AU - Awang, Normah

AU - Ithnin, Anuar

AU - Othman, Mohd. Sham

AU - A Wahab, Muhammad Ikram

PY - 2011

Y1 - 2011

N2 - Ammonia and chemical oxygen demand (COD) were the most two problematic parameters in the landfill leachate. In this study, a new composite adsorbent derived from rice husk ash waste is evaluated with respect to its ability to remove these contaminants from synthetic leachate. Results indicate that the new composite adsorbent is able to adsorb both ammonia and COD. It has a higher adsorption capacity for ammonia (Q = 2.2578 mg/g) and an almost equal adsorption capacity for COD (Q = 2.8893) when compared with commercially activated carbon. The adsorption kinetics of this new product for ammonia and COD were primarily represented by the pseudo second-order mechanism. The overall adsorption rate of the ammonia and COD adsorption processes appears to be determined by chemisorption process. The regenerated composite adsorbent indicated higher adsorption capacities of ammonia and COD, i.e. 12.9366 mg/g and 3.1162 mg/g, respectively.

AB - Ammonia and chemical oxygen demand (COD) were the most two problematic parameters in the landfill leachate. In this study, a new composite adsorbent derived from rice husk ash waste is evaluated with respect to its ability to remove these contaminants from synthetic leachate. Results indicate that the new composite adsorbent is able to adsorb both ammonia and COD. It has a higher adsorption capacity for ammonia (Q = 2.2578 mg/g) and an almost equal adsorption capacity for COD (Q = 2.8893) when compared with commercially activated carbon. The adsorption kinetics of this new product for ammonia and COD were primarily represented by the pseudo second-order mechanism. The overall adsorption rate of the ammonia and COD adsorption processes appears to be determined by chemisorption process. The regenerated composite adsorbent indicated higher adsorption capacities of ammonia and COD, i.e. 12.9366 mg/g and 3.1162 mg/g, respectively.

KW - Ammonia and COD removal

KW - Composite adsorbent

KW - Rice husk

KW - Synthetic leachate

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