Purwantiningsih Sugita, Henny Purwaningsih, Muhammad Fathurrahman

Judul	:	ADSORPTION STUDIES OF Fe(III) ION ON GLUTARALDEHYDE CROSS-LINKED CHITOSAN AND ITS APPLICATION IN PURIFYING VETIVER OIL
Abstrak	:	Adsorption of Fe(III) ion by glutaraldehyde cross-linked chitosan (chitosan-GA) has been studied  by using batch method. The objectives of this research are to determine the optimum adsorption condition  of Fe(III) ion by chitosan-GA, to study the isothermal, kinetics, and effects of Cu(II) ion for adsorption of  Fe(III) ion and its application in purifying vetiver oil. The optimum condition is found through response  surface Box Behnken method. The adsorption isotherm follows Langmuir and Freundlich models. Percent  adsorption value of Fe(III) ion by Chitosan-GA (DD = 78%) is 92% in optimum conditions, i.e.0.75 g  adsorbent weight, 25 ºC, and 360 min contact time. The adsorption process of Fe(III) ion by chitosan-GA  fits into Freundlich and pseudo second-order models. The existence of Cu(II) ions is able to decrease the  percent adsorption value of Fe(III) ion by chitosan-GA. Percent adsorption of Fe(III) ion by chitosan-GA  is higher than that of Cu(II) ion at all conditions. Percent adsorption of Fe(III) and Cu(II) ion by chitosan- GA in vetiver oil is lower than other conditions (solution of Fe(III)  and Cu(II)  ion with its concentration ratio  of 1:1).  Key words: Adsorption, Chitosan-glutaraldehyde, Fe(III) ion, Vetiver oil.
Tahun	:	2015	Media Publikasi	:	Jurnal Internasional
Kategori	:	Jurnal	No/Vol/Tahun	:	4 / 13 / 2015
ISSN/ISBN	:	0972-768X
PTN/S	:	Institut Pertanian Bogor	Program Studi	:	KIMIA
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