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All Journal Prosiding Seminar Nasional MIPA Al-Kimia Indonesian Journal of Chemistry
Adhitasari Suratman
Jurusan Kimia FMIPA UGM
Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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SINTESIS DAN KARAKTERISASI MEMBRAN KOMPLEKS POLIELEKTROLIT (PEC) KITOSAN-PEKTIN Ayuni, Ni Putu Sri; Siswanta, Dwi; Suratman, Adhitasari
Prosiding Seminar Nasional MIPA 2014: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2014
Publisher : Prosiding Seminar Nasional MIPA

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Abstract

Membran PEC kitosan-pektin telah berhasil disintesis. Membran PEC kitosan-pektin dapat di sintesis melalui pencampuran pektin yang dilarutkan dalam air kemudian ditambahkan dengan kitosan dan asam asetat (CH3COOH) 0,4 M. Larutan membran kitosan-pektin diuapkan pada suhu 70 C selama 6 jam kemudian dilepas menggunakan NaOH 1 M. Membran PEC kitosan-pektin dibuat dengan konsentrasi 0,5 %. Variasi membran yang disintesis dengan perbandingan kitosan-pektin (70:30), (80:20), (90:10). Membran PEC kitosan-pektin yang dihasilkan di uji serapan air dan di karakterisasi dengan spektrofotometer inframerah (IR), tarik-regangan, dan Scanning Electron Microscopy (SEM). Hasil spektra IR telah membuktikan terbentuknya membran PEC kitosan-pektin dengan adanya interaksi gugus amina pada kitosan dan karboksil pada pektin bilangan gelombang 1604,77 nm-1. Hasil uji serapan air, tarikan dan regangan untuk membran PEC kitosan-pektin perbandingan 70:30 (255 %; 29 N/mm2; 20 %), 80:20 (182 %, 17 N/mm2, 28 %), 90:10 (142, 24, 10 %). Berdasarkan penelitian ini membran PEC kitosan-pektin dapat digunakan sebagai salah satu alternatif untuk pengolahan limbah cair maupun dalam bidang kesehatan.Kata-kata kunci: kitosan, pektin, membran polielektrolitAbstract: Chitosan-pectin PEC membranes had been synthesized. Chitosan-pectin PEC membrane can be synthesized by mixing pectin is dissolved in water and then added to the chitosan and acetic acid (CH3COOH) 0.4 M. Solution of chitosan-pectin membrane is evaporated at a temperature of 70 °C for 6 hours and then removed using 1 M NaOH . Chitosan-pectin PEC membranes prepared with a concentration of 0.5%. Variations membranes synthesized with chitosan-pectin ratio (70:30), (80:20), (90:10). Chitosan-pectin PEC membrane resulting in water uptake test and characterization by infrared spectrophotometer (IR), tensile-strain, and Scanning Electron Microscopy (SEM). IR spectra results have proved the formation of chitosan-pectin PEC membrane with the amine group on the interaction of chitosan and pectin carboxyl at 1604.77 nm-1. The test results of water absorption, traction and strain for chitosan-pectin PEC membranes 70:30 ratio (255%; 29 N / mm 2; 20%), 80:20 (182%, 17 N / mm 2, 28%), 90:10 (142, 24, 10%). Based on this study of chitosan-pectin PEC membrane can be used as an alternative for wastewater treatment and in health.
Immobilization of Pseudomonas aeruginosa FNCC-0063 on Calcium Alginate and Its Application as Bioabsorbent Novianty, Iin; Suratman, Adhitasari; Mudasir
Al-Kimia Vol 11 No 1 (2023): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v11i1.36326

Abstract

Biosorption of Cu (II) using bacteria Pseudomonas aeruginosa FNCC-0063 was immobilized on calcium alginate (PAI). This research examined the effect of various parameters such as pH, contact time, and initial Cu (II) concentration. The biosorption mechanism of Cu (II) was studied by sequential desorption with H2O, KNO3 1 M, HNO3 0.5 M and Na2EDTA 0.1 M. Cu (II) concentration was analyzed using atomic absorption spectrophotometer (AAS). The results showed that optimum Cu (II) ion biosorption occurred at a pH biosorption rate constant of 0.03724 g mg-1.min-1. The kinetics studies showed that Cu (II) biosorption follows pseudo-second-order. The biosorption capacities of 36.60 mg/g. Cu (II) Biosorption followed the Freundlich equation, as shown by a high correlation coefficient (R2) of about 0.99. Ionic bonds dominated the biosorption mechanism of Cu (II) ion on immobilized PAI.
Sodium Triphosphate Effect on Encapsulation of Vitamin B6 into Chitosan-Alginate Nanoparticles and Its In Vitro Drug Release Study Rahman, Aulia; Suherman, Suherman; Suratman, Adhitasari
Indonesian Journal of Chemistry Vol 24, No 5 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.83380

Abstract

The in-vitro drug release study of vitamin B6 encapsulated into sodium tripolyphosphate crosslinked chitosan-alginate (B6-TCA) nanoparticles aims to determine the effect of sodium tripolyphosphate on the encapsulation efficiency of vitamin B6 and effectiveness of the nanoparticles to release vitamin B6. The focus of this research is synthesizing and characterizing TCA nanoparticles to encapsulate vitamin B6 as an effective delivery system by studying the kinetics release of vitamin B6. The research resulted in the formation of coarse solid powder nanoparticles in yellowish-white color with a nanoparticle size of 22.55 nm. Sodium tripolyphosphate decreased the percentage of encapsulation efficiency in the B6-TCA nanoparticles as its concentration increased. However, the increasing sodium tripolyphosphate causes a slower release of vitamin B6 from nanoparticles. The encapsulation efficiency of vitamin B6 is 82.04%. The optimum composition of B6-TCA nanoparticles ratio is 2:1:1.5:2, where Korsmeyer-Peppas kinetics model suited its better with the Fickian diffusion mechanism of 0.989 and has the smallest reaction rate constant of 0.039 occurred within 6 h.
Synthesis of Mesoporous Silica from Palm Oil Boiler Ash (MS-POBA) with Addition of Methyl Ester Sulfonate as a Template for Free Fatty Acid Adsorption from Crude Palm Oil (CPO) Sitohang, Cita; Kuncaka, Agus; Suratman, Adhitasari
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.87703

Abstract

The synthesis of mesoporous material by utilizing palm oil boiler ash (POBA) waste as the silica source and methyl ester sulfonate (MES) surfactant as the template for a high-porosity was investigated for free fatty acids (FFA) adsorption. The research was initiated with silica extraction from POBA by sodium hydroxide addition through the sol-gel precipitation method. Silica modification was carried out with MES surfactant and 3-aminopropyltrimethoxysilane (APTMS) as the co-structure-directing agent (CSDA) in different calcination temperatures. Mesoporous silica-POBA (MS-POBA) free template had a surface area, pore diameter, and pore volume (41.033 m2/g, 4.180 nm, and 0.250 cm3/g) lower than MS-POBA with the template (71.0147 m2/g, 7.923 nm, and 0.524 cm3/g). The ability of MS-POBA to adsorb FFA reached its optimum conditions with an adsorption time of 20 min and an adsorbent dosage of 0.24 g. The FFA removal by MS-POBA with the template was found to have higher adsorption ability, which was 35.54%, compared to the MS-POBA free template of 26.68%. The high porosity of MS-POBA with a template makes the FFA adsorption capacity of this material higher than MS-POBA free template.
Co-Authors Agus Kuncaka Aulia Rahman Dwi Siswanta Mudasir Ni Putu Sri Ayuni Novianty, Iin Sitohang, Cita Suherman, Suherman