Article Per Year (5 Year)
p-Index From 2020 - 2025
2.808
P-Index
This Author published in this journals
All Journal JURNAL KIMIA SAINS DAN APLIKASI PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman JURNAL ATOMIK JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Abdimas Mahakam Bulletin of Chemical Reaction Engineering & Catalysis
Soerja Koesnarpadi
Jurusan Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Mulawarman
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

Published : 19 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : PROSIDING SEMINAR KIMIA

 1 
KOMPOSISI OPTIMUM PEMBUATAN ADSORBEN KITOSAN-Fe3O4 (K-Fe3O4) DAN KARAKTERISASINYA DENGAN MENGGUNAKAN FT-IR DAN XRD Munandar, Aris; Alimuddin, Alimuddin; Liana Sari, Ika Yekti; Koesnarpadi, Soerja
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Telah dilakukan sintesis adsorben K-Fe3O4 dari magnetit (Fe3O4) yang sebelumnya dibuat dari ferri amonium sulfat (III) dan ferro amonium sulfat (II) dengan perbandingan 3:1. Kemudian Fe3O4 dimodifikasi dengan kitosan yang dimanfaatkan untuk mengadsorpsi ion logam Pb2+. Adsorben diatur dengan perbandingan komposisi magnetit dan kitosan 1:1; 2:1 dan 1:2. Karakteristik adsorben K-Fe3O4 dan interaksi adsorben terhadap ion Pb2+ diketahui berdasarkan data Fourier Transform Infared (FTIR) dan X-ray Powder Diffraction (XRD). Untuk hasil FT-IR, K-Fe3O4 mengalami perubahan peak pada panjang gelombang 354,9 cm-1 merupakan gugus O ̶ Fe dan 1026 cm-1 yang merupakan gugus fungsi dari C ̶ O. Hasil XRD menunjukkan puncak-puncak karakteristik magnetit dan K-Fe3O4 terdapat di 2θ = 35,79° dan 36,01° dimana hasilnya tidak mengalami perubahan yang signifikan menandakan bahwa senyawa magnetit ini tetap ada di K-Fe3O4. Konsentrasi ion logam Pb2+ setelah adsorpsi ditentukan secara spektrofotometer serapan atom (SSA). Hasil penelitian didapatkan bahwa perbandingan komposisi yang ideal adalah 1:1 dengan % penyerapan sebesar 94,97 % untuk ion logam Pb2+. Kata kunci: Adsorben, Magnetit, Kitosan, Ion Logam Pb2+, Fourier Transform Infared (FTIR), X-ray Powder Diffraction (XRD), Spektrofotometer Serapan Atom (SSA).
KINETIKA ADSORPSI Cr(VI) MENGGUNAKAN ADSORBEN MAGNETIT (Fe 3 O 4 ) DAN MAGNETIT TERLAPIS ASAM HUMAT (Fe 3 O 4 /AH) Soerja Koesnarpadi; Daniel Tarigan
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2014
Publisher : PROSIDING SEMINAR KIMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The adsorption kinetics of Cr(VI) by two adsorbents, i.e. magnetite (Fe 3 O 4 ) and magnetite coated humic acids (Fe 3 O 4 /HA) have been studied. Adsorbent of Fe 3 O 4 and Fe 3 O 4 /HA were synthesized by co-precipitation method and then characterized by FT-IR, XRD and TEM image measurements. The acidity of the solution was adjusted to pH 3, comparasion on the adsorption kinetics of Cr(VI) on Fe 3 O 4 between Fe 3 O 4 /HA. The FT-IR spectra revealed the presence of main fuctional groups of Fe-O and C-O at free carboxylate acid in Fe 3 O 4 /HA and those of only Fe-O in Fe 3 O 4 . The two adsorbent had similar diffraction peaks at 2θ. The TEM image demonstaretd that Fe 3 O 4 were spherical in shape and uniform distribution and then Fe 3 O 4 /HA had no uniform size. Adsorption of Cr(VI) by Fe 3 O 4 was much faster than Fe 3 O 4 /HA at the acidity of pH 3, with adsorption rate constant (k) of 0.013 g.mg -1 .menit -1 for Fe 3 O 4 and 0.0062 g.mg -1 .menit -1 for Fe 3 O 4 /HA. The two adsorbents were giving a model of adsorption kinetics Ho (pseudo order 2).
KAJIAN LITERATUR PEMANFAATAN ADSORBEN KITOSAN TERMODIFIKASI ARANG AKTIF LIMBAH ORGANIK TERHADAP LOGAM BERAT Arsyakia, Tarisa; Koesnarpadi, Soerja; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A literature review on the utilization of chitosan adsorbent modified organic waste activated charcoal against heavy metals has been conducted. From the results of the study, it was obtained that organic waste activated charcoal still has chemical content in the form of cellulose, lignin, hemicellulose, carboxymethyl cellulose ranging from 33.61-65,7%. The carbon compounds formed ranged from 66.60-86.4%. The organic waste activated charcoal used includes coffee grounds; tea grounds; teak wood powder; coconut shell; durian peel waste; pineapple peel waste; salak fruit seed waste; and rubber fruit shell. Activated charcoal is modified with chitosan to optimize pores, expand the surface, and increase adsorption power. The modification process is by mixing chitosan with a certain weight and dissolving it in 1-3% CH3COOH, then adding activated charcoal with a certain weight, stirring until a homogeneous gel is formed. Next, it was baked at 60ºC for 24 hours. The results formed were mixed into NaOH with a certain concentration, then washed with distilled water until neutral and stored in a desiccator. The chitosan - activated charcoal adsorbent was then contacted with heavy metals Arsenic (As); Lead (Pb); Cadmium (Cd); Copper (Cu); Zinc (Zn); and Iron (Fe). The results obtained percent absorption and adsorption capacity ranged from 85.32-99.992% and 0.1236-177.7035 mg/g. The values of percent absorption and adsorption capacity are influenced by the surface area, concentration, and adsorbent that needs to be activated. Keywords : Activated Charcoal, Chitosan, Modification, Heavy Metal
ADSORPSI ZAT WARNA METHYLENE BLUE MENGGUNAKAN ADSORBEN KOMPOSIT Fe3O4-ARANG AKTIF KULIT LAI [Durio Kutejensis (Hassk.)Becc.] Rahmawati, Rahmawati; Wirawan, Teguh; Koesnarpadi, Soerja
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Methylene blue is a synthetic dye commonly used in industry. Methylene blue is not very toxic to humans, but can cause skin irritation, eye irritation, and systemic effects including blood changes. This research aims to utilize lai bark activated charcoal composited with Fe3O4 as an adsorbent to adsorb methylene blue dye. Fe3O4-lai skin activated charcoal composite adsorbent was synthesized using the co-precipitation method from FeSO4.7H2O and FeCl3.6H2O then combined with lai skin activated charcoal. The Fe3O4-activated charcoal composite for skin was characterized using FTIR. The results of composite characterization using FTIR show that there is a wave number of 596.00 cm-1 which is the Fe-O group. The research results showed that the optimum conditions for the adsorption of methylene blue dye by the Fe3O4-activated charcoal composite adsorbent for lai skin were 60 minutes, pH 8, concentration 250 mg/L and following the Langmuir isotherm. The maximum adsorption capacity of Fe3O4-lai skin activated charcoal composite was 197.8792 mg/g. Keywords: Adsorption, Methylene Blue Dye, Composite, Lai Leather
Co-Authors Acmad Maulana Maulana Adhaina, Karina Alimuddin Aman Sentosa Panggabean Anuar, Hajar Aris Munandar Arsyakia, Tarisa Bohari Yusuf Budi Hastuti Daniel Tarigan Degirmenci, Volkan Djihan Ryn Pratiwi, Djihan Ryn Elen Reknosari Ersanto, Tri Edi Erwin - Eva Marliana, Eva Fatmawati, Ririn Anggraeni Fradita, Windiy Mira Hadi Nur Hairani, Rita Isyahro, Novia Rahmawati Lai, Sin Yuan Liana Sari, Ika Yekti Lianasari, Ika Yekti Mahyati, Agus Mukhamad Nurhadi, Mukhamad Nabila, Sahira Fara Nanang Tri Widodo Nanang Tri Widodo Nazarudin Nisa, Muflihatu Khoiratun Noor Hindryawati, Noor Rahmawati, Rahmawati Reknosari, Elen Ruga, Ritbey Saptono Hadi, Saptono Teguh Wirawan Teguh Wirawan, Teguh Wirhanuddin, Wirhanuddin Yuniar Ponco Prananto