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All Journal Jurnal Teknik Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Darmansyah
Universitas Lampung
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Dehidrasi Etanol Menggunakan Zeolit Teraktivasi Irradiasi Lampu Sinar Ultraviolet (UV Light) pada Kolom Fixed Bed M. Praditia Ansor; Simparmin Br. Ginting; Muhammad Haviz; Darmansyah
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 21 No 1 (2022): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

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To obtain ethanol purity >99.5%, an adsorption method using Lampung Natural Zeolite (ZAL) is needed. In order to be used as a zeolite adsorbent, activation must be carried out using UV light lamp irradiation germicidal lamp 254 nm, blacklight lamp 360 nm and insect lamp 546 nm. The results of the BET characteristic test showed that the surface area of ??the non-treated zeolite was 41,331 m2/g, the germicidal lamp was 41,158 m2/g, the black light lamp was 40,399 m2/g and the insect lamp was 38,796 m2/g. The largest total pore volume was obtained from UV germicidal lamp activated zeolite 0.0690 cc/gram and the average pore size was found in insect lamp activated zeolite 35.57. After the activation of the zeolite, pellets were formed using a binder from wheat flour with a composition of 35% by weight of zeolite, then the zeolite was calcined to remove the binder that was still attached and opened the pores that were closed by the binder. The results obtained were dehydrated ethanol to increase purity using zeolite activated by UV germicidal lamp 98.69% v/v for 45 minutes, blacklight and insect lamp 98.69% v/v for 55 minutes.
Pengaruh Konsentrasi Mikroorganisme pada Proses Pembuatan Bioetanol dari Limbah Kulit Singkong (Manihot esculenta) Menggunakan Metode SSF (Simultaneous Sacharification and Fermentation) dengan Enzim StargenTM 002, Enzim Selulase, Saccharomyces cerevisiae Panca Nugrahini Febriningrum; M. Ikhsan; Herti Utami; Lia Lismeri; Darmansyah; Fatullah
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 8 (2025): Prosiding Seminar Nasional Ilmu Teknik dan Aplikasi Industri (SINTA) 2025
Publisher : Fakultas Teknik Universitas Lampung

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Penelitian pembuatan bioethanol ini menggunakan bahan baku limbah kulit singkong (Manihot Esculenta) dengan menggunakan metode SSF (Simultaneous Sacharification and Fermentation) dengan variasi jumlah mikroorganisme saccharomyces cerevisiae dengan zymomonas mobilis (5%:5%, 5%:10%, 10%:5%, dan 10%:10%) w/v. yang difermentasikan selama 13 hari. Dilakukan analisa gula reduksi dengan menggnakan metode DNS (Dinitrosalycilid acid), kemudian analisa jumlah sel dilakukan dengan menggunakan counting chamber, dan analisa kadar ethanol dengan menggunakan GC (Gas Chromatography). Hasil penelitian menunjukan bahwa kadar ethanol tertinggi berada pada jumlah mikroorganisme saccharomyces cerevisiae dengan zymomonas mobilis 5% : 10% (w/v) dengan waktu lama fermentasi selama 12 hari dengan konsenterasi ethanol yang didapatkan sebesar 10,91%, dengan hasil perhitungan jumlah sel tertinggi sebanyak 24,5 x 106 sel/mL pada hari ke-9. Kemudian hasil analisa gula reduksi pada hari pertama didapatkan nilai sebesar 22,9 gram/mL.
Co-Authors Fatullah Herti Utami Lia Lismeri M. Ikhsan M. Praditia Ansor Muhammad Haviz Panca Nugrahini Febriningrum Simparmin br Ginting