KAJIAN ADSORPSI KROM(III) PADA BIOMASSA TANDAN KOSONG KELAPA SAWIT THE STUDY OF ADSORPTION Cr(III) FROM EMPTY FRUIT BUNCHES BIOMASS Radna Nurmasari

Sains Dan Terapan, Kimia
2008 unpublished
ABSTRAK Kajian adsorpsi Cr(III) pada biomassa tandan kosong kelapa sawit (TKKS) telah dilakukan. Karakterisasi gugus fungsi biomassa TKKS dianalisis menggunakan FTIR. pH dan waktu optimum ditentukan berdasarkan jumlah maksimum Cr(III) yang dapat diadsorpsi oleh TKKS. Adsorpsi Cr(III) dilakukan dalam sistem batch selama satu jam pada variasi konsentrasi ion logam. Ion logam yang teradsorpsi dihitung dari selisih konsentrasi ion logam dalam larutan setelah dan sebelum adsorpsi berdasarkan
more » ... berdasarkan analisis dengan metode SSA. Adsorpsi Cr(III) secara optimum dicapai pada pH 4 (88%), dengan waktu kontak optimum 60 menit (70,79%). Persen recovery Cr(III) dari biomassa TKKS pada metode batch sebesar 34%, sedangkan pada metode kolom sebesar 25,93%. Kata kunci : Adsorpsi, biomassa, tandan kosong kelapa sawit (TKKS), Cr(III) ABSTRACT The study of adsorption Cr(III) from empty fruit bunches (EFB) biomass have been done. The characteristics of functional groups of EFB biomass have analyzed with spectrophotometer FTIR. The optimum of pH and adsorption time calculated based on the maximum of amount Cr(III) adsorbed by EFB. The adsorption of Cr(III) was conducted in a batch system for one hour at variation of metal ion concentration. The adsorbed metal ion was calculated from differences of metal ion concentration before and after adsorption based on the analysis with AAS method. The optimum adsorption of Cr(III) raised at pH 4 (88%), with optimum time contact 60 minutes (70,79%). The prosen recovery of Cr(III) from EFB biomass with batch method was 34%, the other side with coloumn method was 25,93%.
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