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All Journal Indonesian Journal of Pure and Applied Chemistry
St Fauziah
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Hasanuddin University
Biochemistry, Genetics & Molecular Biology Chemistry

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PEMBUATAN DAN MODIFIKASI KARBON AKTIF PELEPAH KELAPA SAWIT (Cocus nucifera L.) SEBAGAI ADSORBEN METILEN BIRU (PREPARATION AND MODIFICATION OF ACTIVATED CARBON FROM PALM OIL (Cocus nucifera L.) AS ADSORBENT OF BLUE METHYLENE) Risma Achmad; St Fauziah; Muhammad Zakir
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 2 (2020)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (744.958 KB) | DOI: 10.26418/indonesian.v3i2.46309

Abstract

The methylene blue dye adsorbed by activated carbon from oil palm fronds modified with H2SO4 has been carried out. This study aims to utilize activated carbon from palm oil frond waste (Cocus nucifera L.) as an adsorbent to adsorb toxic methylene blue dye in textile industrial wastewater. The method consisted of several steps, namely: carbonization, carbon activation using 0.3M HCl activator, surface modification, and identification of functional groups using FTIR, characterization of the adsorbent material using SEM, BET, and surface area analysis with methylene blue. The optimal adsorption time of methylene blue by activated carbon is 20 minutes, longer than modified activated carbon which is 15 minutes. Adsorption of methylene blue by activated carbon and modified activated carbon according to the Langmuir isothermal model. The adsorption capacity of activated carbon was lower, namely 9.7847 mg / g compared to the adsorption capacity of modified activated carbon, which was 10.7642 mg / g. This proves that the active carbon modified by H2SO4 is better used as an adsorbent for adsorbing methylene blue dye
SINTESIS DAN KARAKTERISASI MOLECULARLY IMPRINTED POLYMERS MENGGUNAKAN METIL METAKRILAT DAN ETILEN GLIKOL DIMETAKRILAT SEBAGAI ADSORBEN DI-(2-ETILHEKSIL) FTALAT (SYNTHESIS AND CHARACTERIZATION OF MOLECULARLY IMPRINTED POLYMERS USING METHYL METHACRYLATE AND ETHYLENE GLYCOL DIMETACRILATE AS ADSORBENT DI-(2-ETILHEKSIL) PHTHALATE) Risna Jupri; St Fauziah; Paulina Taba
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.088 KB) | DOI: 10.26418/indonesian.v5i3.59132

Abstract

Molecularly Imprinted Polymer (MIP) is an intelligent synthetic material because it has the ability to selectively recognize target molecules. This study aims to synthesize, characterize and analyze the performance of MIP. MIP material was synthesized using di-(2-Ethylhexyl) phthalate (DEHP) as a template molecule, methyl methacrylate (MMA) monomer combined with ethylene glycol dimethacrylate (EGDMA) as a crosslinker by precipitation polymerization method. MIP materials were characterized by SEM-EDS instrument, FTIR spectrometer, SAA instrument, and UV-Vis spectrophotometer. The test variables for the adsorption ability of MIP material on DEHP compounds were time and concentration. The results showed that the synthesized MIP was in the form of a coarse white solid with a stiff texture. Characterization with the EDS instrument showed a decrease in the mass percent of C and percent of C atoms which indicated the formation of MIP_DEHP_MMA-co-EGDMA(TE) and the surface morphology characterized by the SEM instrument was composed of small grains that tend to be uniform and have pores. The bonds that affect the formation of polymers characterized by FTIR were –C=C, –C=O, and –CO. Characterization with the SAA instrument was 142,2770 m2/g, the total pore volume was 0,2616 cm3/g and the average pore radius was 7.3562 nm, indicating mesoporous material. The optimum time for adsorption of MIP_DEHP_MMA-co-EGDMA(TE) to DEHP was 120 minutes. MIP_DEHP_MMA-co-EGDMA(TE) followed the pseudo-second-order kinetics model and the adsorption obeyed the Freundlich adsorption isotherm
Co-Authors Muhammad Zakir Paulina Taba Risma Achmad Risna Jupri