Removal of Natural Organic Matter from Sg. Sireh Using Local Manufactured Activated Carbon
The presence of dissolved organic components in potable water supplies is aesthetically undesirable not only because it frequently imparts colour, taste and odour to the treated water, but may also be associated with a variety of problems relating to quality of water that are potentially hazardo...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1998
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10200/1/FK_1998_19_A.pdf |
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| Summary: | The presence of dissolved organic components in potable water
supplies is aesthetically undesirable not only because it frequently imparts
colour, taste and odour to the treated water, but may also be associated
with a variety of problems relating to quality of water that are potentially
hazardous to health. Activated carbons have been identified as a suitable
and economical method for removal of dissolved organic compounds in
drinking water. In this study, activated carbon, KI-6070 and KI-8085, which
were provided by KEKWAH INDAH Sdn Bhd were used to remove
dissolved organic compounds. The external surface area of activated
carbons, KI-6070 and KI-B085 is approximately 277 m2/g and 547 m2/g,
respectively. Both equilibrium experiments and fixed bed column studies
were carried out to study the saturation capacity of the activated carbons.
Freundlich and Summers isotherms are found to fit well for all the batch experiments with R-square being approximately 0.9 . The saturation
capacity of KJ-6070 and KI-8085 are approximately 4.042 mg/g and 4.47
mg/g, respectively. The adsorption capacity of KI-8085 was better than that
of KI-6070. In the fixed bed column study, generally higher empty bed
contact time (EBCT) performed better compared to low EBCT. The
maximum cumulative removal of NOM for KI-8085 was 3.0 mg/g,
approximately three times higher than KI-6070 which was 1 .2 mg/g from
the fixed bed column experiment. Clark model was able to simulate the
breakthrough limit of the study, while the Adams-Bohart model could only fit
up to 50% of the data collected. The study is significant in that it indicates
that activated carbon are a possible option for removal of dissolved organic
compounds in potable water supply. However, the design of the treatment
process using activated carbon in our treatment plants must be carefully
evaluated to take into account aesthetic, health and economic
considerations. |
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