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All Journal JST ( Jurnal Sains Terapan ) Akta Kimia Indonesia
Taufik Qodar Romadiansyah
Chemistry Department, Institut Teknologi Sepuluh Nopember
Chemistry Mathematics Social Sciences Other

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Preparasi dan Karakterisasi Membran Gabungan PSf/PEG dengan Variasi Pengisi KTZ dan KTZ Teroksidasi untuk Aplikasi pada Larutan Kristal Violet Nurul Widiastuti; M. Faqri Fahrozi Huzein; Taufik Qodar Romadiansyah
Akta Kimia Indonesia Vol 6, No 2 (2021)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v6i2.11456

Abstract

Membran gabungan PSf dengan aditif PEG-400 dan variasi pengisi KTZ dan KTZ teroksidasi telah dipreparasi melalui metode inversi fasa dengan DMAc sebagai pelarut. Membran dikarakterisasi dengan X Ray Difraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), Thermogravimetric Analysis (TGA), Forier Transform Infrared (FTIR) dan contact angle meter. Membran diuji kinerjanya dengan filtrasi kristal violet. Nilai fluks air untuk membran PSf/PEG, PSf/PEG-KTZ dan PSf/PEG-KTZ teroksidasi masing-masing adalah 101,91 L/m2jam, 320,05 L/m2jam dan 60,64 L/m2jam. Nilai rejeksi terhadap kristal violet untuk masing-masing membran adalah 98,17%, 82,90% dan 99,4% .
Adsorpsi Metilen Biru dan Kongo Merah pada Zeolit-A Hasil Sintesis dari Abu Dasar Batubara PT. Petrokimia Gresik Widiastuti, Nurul; Fachruddin, Mochammad Harits; Setyaningsih, Endang Purwanti; Romadiansyah, Taufik Qodar
JST (Jurnal Sains Terapan) Vol 8, No 1 (2022): JST (Jurnal Sains Terapan)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v8i1.1283

Abstract

The adsorption of methylene blue and congo red dye using zeolite-A synthesized from coal bottom ash and it comparison from synthetic materials has been studied with initial concentration variations between 60, 80, 100, 120, 140, 160, 180, 200 and 220 mg/L, contact time 10-100 min and temperature between 30, 40, 50 ºC with pH 6-7. Adsorption equilibrium time was achieved at contact time of 70-80 minutes for methylene blu dye and 40-50 minutes for congo red dye. Increased adsorption capacity significantly lead to methylene blue with maximum adsorption capacity achieved up to 67.57 mg/g and 70.73 mg/g, adsorption capacity on congo red adsorbate achieved 39.43 mg/g and 41.50 mg/g each for zeolite A from coal bottom ash and it comparison. The analysis of the kinetics adsorption equation shows that the adsorption process of methylene blue and congo red dye follows second-order pseudo kinetics model, but adsorption of methylene blue follows Freundlich isothermal equation, while adsorption of congo red follows Langmuir isothermal equation. The study of adsorption thermodynamics results that the capacity adsorption increased with the increasing of temperature. Adsorption process occurs endothermally and spontaneously at methylene blue and congo red dye.
Co-Authors Endang Purwanti Setyaningsih, Endang Purwanti Fachruddin, Mochammad Harits M. Faqri Fahrozi Huzein Nurul - Widiastuti