Electronic Theses and Dissertation

ABSTRAK
iii


Penelitian tentang uji daya serap metilen biru menggunakan karbon aktif yang
dimodifikasi dengan cangkang telur telah dilakukan. Sumber karbon aktif yang
digunakan adalah limbah serbuk gergaji, karbon aktif yang diperoleh selanjutnya
dimodifikasi dengan larutan kalsium karbonat dari limbah cangkang telur. Karbon
aktif termodifikasi diuji daya serapnya terhadap metilen biru dengan variasi
waktu dan pH . Hasil uji adsorpsi menunjukkan bahwa kondisi adsorpsi optimum
terjadi pada pH 8 dengan waktu kontak 25 menit. Hasil uji adsorpsi karbon aktif
termodifikasi terhadap metilen biru mengikuti model isoterm Langmuir dengan
q
sebesar 78,74 mg/g. Hasil ini menunjukan karbon aktif termodifikasi
berpotensi digunakan sebagai adsorben metilen biru.
mak
Kata kunci: arang aktif, cangkang telur, metilen biru, adsorpsi

ABSTRACT

The adsorption of methylene blue by activated carbon modified with eggshell had
been done. Sawdust waste was used as a sourse of activated carbon. The activated
carbon obtained was modified with a solution of calcium carbonate from eggshell
waste. The modified activated carbon was tested for removal of methylene blue
with variation of coutaet time and pH. The result of adsorption test results showed
that the optimum adsorption condition was occured at pH 8 with a contact time of
25 minutes. The adsorption steady of methylene blue by modified activated
carbon was folowed adsorption to methylene blue were followed Langmuir
isotherm models with q
at 78,74 mg/g. These results indicate the potential use
of modified activated carbon as adsorbent of methylene blue.
mak
Keywords: Sawdast waste carbon, calcium carbonate, methylene blue, adsorption.

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