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All Journal Jurnal Kimia Mulawarman
Teguh Wirawan
Jurusan Kimia, FMIPA, Universitas Mulawarman
Chemistry

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Adsorption Of Methylene Blue Using Active Charcoal From Empty Fruit Bunch (EFB) Teguh Wirawan; Ishak Wiradikara Az; Noor Hindryawati
JURNAL KIMIA MULAWARMAN Vol 21 No 1 (2023)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i1.1013

Abstract

Research on the adsorption of methylene blue by activated charcoal from Empty Fruit Bunch (EFB) has been carried out. This study aimed to synthesize activated charcoal from EFB, characterize it, and use it as an adsorbent for methylene blue. Activated charcoal was synthesized by carbonation in a furnace at 300oC for 1 hour. Chemically, activation was carried out by immersion in HCl solution for 24 hours. Characterization was carried out by proximate test, determination of functional groups using Fourier Transform Infrared (FT-IR), and determining material shape with X-Ray Diffraction (XRD). The study of activated charcoal adsorption as methylene blue adsorbent was carried out by treating variations in contact time, adsorbent weight, and concentration. The results of the proximate test with the parameters of surface area, moisture content, and ash content were 162.12 m2/g, 0.52%, and 5.27%, respectively. The results of the FT-IR characterization test showed an aromatic C–H, C=C and C–O. Based on the results of characterization with XRD giving a pattern at a diffraction angle of 2 20 - 30o, it was seen that there was a wide peak, which indicated that it had an amorphous structure. The optimum conditions for methylene blue adsorption occurred at a contact time of 40 minutes, and the adsorbent weight was 0.1 g for 10 mL of 50 ppm methylene blue. The adsorption of methylene blue followed the Freundlich isotherm adsorption pattern and had a maximum adsorption capacity of 8.92 mg/g.
EKSTRAKSI ION Cd2+ DENGAN DITIZON SEBAGAI ZAT PEMBAWA DAN SPAN-80 SEBAGAI SURFAKTAN MENGGUNAKAN TEKNIK EMULSI MEMBRAN CAIR Aulia Syafitri Rachim; Dirgarini J. N Subagyono; Teguh Wirawan
JURNAL KIMIA MULAWARMAN Vol 21 No 2 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i2.1014

Abstract

Penelitian tentang ekstraksi ion logam kadmium Cd2+ dengan teknik emulsi membran cair telah dilakukan. Penelitian ini dilakukan secara eksperimental di laboratorium menggunakan ditizon sebagai zat pembawa, span-80 sebagai surfaktan, parafin cair sebagai fase membran, larutan HNO3 sebagai fase internal dan larutan kadmium 20 ppm sebagai larutan sampel. Tujuan penelitian ini adalah untuk menentukan kondisi optimum ion logam Cd2+ yang meliputi pH fase eksternal, konsentrasi fase internal, konsentrasi surfaktan, waktu ekstraksi konsentrasi ion logam Cd2+ yang dapat diekstraksi menggunakan teknik emulsi membran cair. Penentuan konsentrasi sisa ion logam kadmium hasil ekstraksi menggunakan alat Spektrofotometer UV-Vis pada panjang gelombang 518 nm. Kondisi optimum untuk mengekstraksi ion logam Cd2+ menggunakan teknik emulsi membran cair pada penelitian ini adalah pH fase eksternal 7, konsentrasi fase internal 1 M, konsentrasi surfaktan 3,5% dan waktu ekstraksi 15 menit. Pada kondisi optimum tersebut konsentrasi ion logam kadmium yang dapat diekstraksi mencapai 100 ppm dengan nilai persen ekstraksi 77,574%.
Co-Authors Aulia Syafitri Rachim Dirgarini J. N Subagyono Ishak Wiradikara Az Noor Hindryawati