Optimalisasi Kalsium Karbonat Dari Cangkang Telur Untuk Produksi Pasta Komposit
ABSTRACT: Egg shell is a
household waste which can be used to produce a composite paste, as it contains
around 90% calsium carbonate (CaCO3) as the main composition. This research
aims to determine the optimum weight of egg shell powder in composite paste
production. This research is conducted by determining the calsium carbonate
content beforehand by EDTA titration and the determination of the contain of
calsium by using atomic absorption spectroscopy (AAS), then the determination
of the optimum weight of shell powder by varying the shell powder and baking
soda. The results of the research that has been done that the content of
calsium carbonate in the shell of eggs was 92,57% and calsium at 28%. While the
optimum weight for the shell powder manufacture composite paste which is 3
grams with a ratio of 3,0 (Ca) : 7,0 (BS), in which the pH obtained is 9. This
is in a accordance by SNI that the pH value of the composite paste is 4,5–10,5
and is semisolid form.
Penulis: Warsy, St Chadijah,
Wa Ode Rustiah
Kode Jurnal: jpkimiadd160600
