kemenyan (Styrax benzoin Dryand) extract as green inhibitor of calcium carbonate (CaCO_3) crystallization

摘要

To study the effect of kemenyan extract from Styrax benzoin Dryand resin as green inhibitor on calcium carbonate (CaCO3) scale formation, experiment has been carried out using a bottle roller bath method at temperature of 80 degrees C and at various growth solutions from 0.050 to 0.100 M. The extraction result of the kemenyan was characterized using Fourier transform infrared spectroscopy to identify functional groups found in the kemenyan extract. The morphology of CaCO3 crystal obtained was analyzed using SEM and the particle size distributions of the CaCO3 crystals produced were measured by a particle size analyzer. The result of the experiment showed that kemenyan extract can be used as a green inhibitor of calcium carbonate scale formation. The presence of kemenyan extracts in the various growth solutions of CaCO3 0.050, 0.075, and 0.100 M gives percentage of inhibition ability from 12% to 77% in inhibiting the formation of the CaCO3 scale. The ability of the kemenyan extract to inhibit the growth rate of CaCO3 crystallization depends on amount of the inhibitor concentration added and the growth solution concentration as a crystal growth media under these experiment conditions.