Sistesis lempung terpilar polikation aluminium dari lempung alam Banyumas sebagai adsorben indigo karmina

Kurniawan , Ari (2005) Sistesis lempung terpilar polikation aluminium dari lempung alam Banyumas sebagai adsorben indigo karmina. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Lempung merupakan material yang berlimpah yang belum dimanfaatkan secara optimal. Lempung mempunyai sifat plastis pada keadaan basah, dimana menunjukkan pengembangan antarlapis yang menyebabkan volumenya meningkat menjadi dua kali lipat, nail= tidak mempunyai pori yang permanen, dan kemampuan adsorpsinya rendah. Kekurangan tersebut dapat diatasi dengan mengubah lempung alam menjadi lempung terpilar. Pada penelitian ini disintesis lempung terpilar Al dan lempung alam Banyumas dengan memvariasi rasio Al/lempung dan suhu kalsinasinya dan uji aktifitas adsorpsi lempung terpilar hasil sintesis terhadap larutan indigo karmina Pilarisasi lempung dilakukan dengan interkalasi polikation Al pada lempung alam yang dilanjutkan dengan kalsinasi. Hasil sintesis dikarakterisasi dengan difraktometer sinar-x. Analisis indigo karmina hasil adsorpsi dilakukan menggunakan spektrofotometer UV-Vis. Hasil difraksi sinar-x menunjukkan bahwa peningkatan rasio AVlempung mampu meningkatkan kristalinitas lempung terpilar, tetapi tidak mempengaruhi ukuran basal spacing-nya. Peningkatan suhu kalsinasi menyebabkan penurunan kristalinitas dan jarak basal spacing lemptmg terpilar Al. Basal spacing yang terbesar dihasilkan oleh lempung terpilar Al pada kalsinasi dengan suhu 300 °C yaitu sebesar 18,03 A.Uji aktifitas sebagai adsorben indigo karmina menunjukkan dengan meningkatnya suhu kalsinasi pada sintesis lempung terpilar Al menyebabkan kemampuan adsorpsinya menurun. Sedangkan dengan meningkatnya rasio AVlempung memperbesar kemampuan adsorpsinya. Lempung terpilar Al dengan rasio Al/lempung = 2 dan suhu kalsinasi 3000C mampu mengadsorpsi indigo karmina sebesar 88,45%. Natural clay is a material which has not been optimally exploited yet. Clays have plastic properties in wet condition, it shows interlayer development causing the volume becomes twofolds, but it doesn't have permanent pores, and has low adsorption ability. The problem can be solved by altering natural clay to pillared one. Al-pillared clays have been synthesized from Banyumas natural clays. Al/clay ratios and calcination temperatures were varied to show the effects to pillared clay resulted. The adsorption properties have been evaluated by adsorption of indigo carmine. Al-pillared clays have been synthesized. with intercalation polycation Al to natural clays followed by calcination. The results were characterized by x-rays diffractometer. The amount of indigo carmine after adsorption was analyzed with UV-Vis spectrophotometer. X-ray diffraction shows that Al-pillared clay crystallinity increased with the increase of Al/clay ratio. Different Al/clay ratio did not influence basal spacing size. Increase of calcination temperature decreased the basal spacing size and the crystallinity of Al-pillared clay. The highest basal spacing was 18,03 A obtained by which Al-pillared clay was calcinated at 300 °C. Al-pillared clay, as indigo carmine adsorben, was examined to observe the activity. The result showed that increase of calcination temperature caused decline of adsorptivity, while the increase Al/clay ratio boosted the adsorptivity. AI-pillared clay with Al/clay ratio of 2 and calcination temperature 300 °C managed to adsorp indigo carmine as high as 88,45 %.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:31061
Deposited By:Mr UPT Perpus 1
Deposited On:14 Nov 2011 09:50
Last Modified:14 Nov 2011 09:50

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