Synthesis and characterization of activated carbon-calcium carbonate nanomaterials for air contaminants filtration

Date of Completion


Document Type


Degree Name

Bachelor of Science in Biochemistry


Air Filters.


This study, air contaminants were allowed to pas through a filter containing activated carbon-calcium carbonate nanomaterial from coconut shells and eggshells. Activated carbon was synthesized using potassium hydroxide (KOH). The synthesized activated carbon was tested using SEM-EDX. Nano-calcium carbonate was synthesized using hen eggshells. The shells were crushed, washed, heat treated and activated using cetyltrimethylammoniunm bromide (CTAB). The synthesized nano-calcium carbonate was tested using flame test for calcium ions and anion test for carbonate ions. Filters were created using three kinds of nonwoven fabric; dry-liad, wet-laid and polymer-laid. Different ratios were applied to each fabric for comparison. To test the efficiency of the filters, two Arduino based air-monitoring systems were used and it was found out that the ration of 3:1 (2% activated carbon and 1% nano-calcium carbonate) was the most efficient filter with the presence of both activated carbon-calcium carbonate nanomaterial. The 3:1 filter that was used was tested along with the unused filter for further analysis using the SEM-EDX. This study showed that activated carbon-calcium carbonate nanomaterials are effective in filtering pollutants like carbon dioxide (CO2), carbon monoxide (CO), PM1, PM 2.5 and PM 10.

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