The Malaysian Journal of Analytical Sciences Vol 10 No 1 (2006): 1 – 6

 

 

 

TREATMENT OF LANDFILL LEACHATE IN KAYU MADANG, SARAH: TEXTURAL AND PHYSICAL CHARACTERIZATION (PART 1)

 

Coffin G. Joseph, Hasnuf Fazfi Md. Zain, & Siti Fatimah Dek

 

Industrial Chemistry Program, School of Science & Technology,

Universiti Malaysia Sabah, 88999 Kota Kinabalu, Sabah

 

Abstract

Activated carbons from two agro-industrial wastes; oil palm shells (OPS) and coconut husk (CH); were prepared by chemical activation using potassium hydroxide as the dehydrating agent. A two- stage process was used; with semi-carbonization stage at 200^oC for 15 minutes as the first stage followed by an  activation  stage  at  500^oC  for  45  minutes  as  the  second  stage.  The  precursor  material  with  the impregnation agent was exposed straightaway to semi-carbonization and activation temperature unlike the specific  temperature  progression  as  reported  in  the  literature.  All  experiments  were  conducted  in  a laboratory scale muffle furnace under static conditions in a self generated atmosphere. We found that by using this method, the OPS prepared with the KOH   impregnation ratio of 25% had the highest Iodine Number which was 466.1mg/g but CH with the similar impregnation ratio had the highest Methylene Blue adsorption capacity  and percentage of yield, which were 10.9mg/g and 74.68% respectively.

 

Keywords: activated carbons; two-stage activation process, physical and chemical properties

 

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