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All Journal METANA KOVALEN: Jurnal Riset Kimia FLUIDA ASEAN Journal of Chemical Engineering International Journal of Applied Technology Research Jurnal Difusi Industrial Research Workshop and National Seminar
Hidayatulloh, Irwan
Department Of Chemical Engineering, Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ciwaruga, Bandung Barat, Jawa Barat 40559, Indonesia
Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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The Effect of Plasma Electrolysis for Biodiesel Synthesis Using Waste Cooking Oil as a Raw Material and KOH Catalyst Shoerya Shoelarta; Saripudin; Rahmat Dani Dwi Fedianto; Moch Adli Darojat; Sudrajat Harris Abdulloh; Irwan Hidayatulloh; lidya elizabeth
Fluida Vol 16 No 2 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i2.3987

Abstract

The high consumption of cooking oil in Indonesia is directly proportional to the production of used cooking oil waste that can pollute the environment. To overcome this problem, used cooking oil is used as a biodiesel feedstock using the plasma electrolysis method. Plasma electrolysis is a synthesis process by applying a high voltage to the process. This study aims to determine the effect of the plasma electrolysis method with variations in voltage (400 - 500 volts) and the type of reagent (methanol and ethanol) on % yield and characteristics of biodiesel. The process is carried out by reacting used cooking oil with a reagent that is given a voltage until an electric discharge occurs and two layers are formed and the calculation of the specific energy requirements for the synthesis process is carried out. The results show that at a voltage of 500 volts with methanol reagent produces a yield of 85.73% with characteristics according to the SNI 7128:2015 standard such as density 888.36 Kg/m3, viscosity 5.79 Cst, acid number 0.39 mg - KOH/g, content ester 97.56% and flash point 117oC with the exception of water content 0.373%, with a specific energy requirement of 1758,031 J/mL.
Uji Kinerja Biokoagulan Kitin dan Kitosan dalam Jamur Merang pada Air Limbah Laundry Kusumawati, Endang; Syabila, Mira Rachmawati; Febrianti, Pipit; Hidayatulloh, Irwan
Prosiding Industrial Research Workshop and National Seminar Vol 14 No 1 (2023): Vol 14 (2023): Prosiding 14th Industrial Research Workshop and National Seminar
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v14i1.5406

Abstract

Limbah tidak hanya dihasilkan dari kegiatan industri, namun usaha kecil yang dilakukan masyarakat, salah satu contohnya yaitu usaha laundry. Air limbah laundry memiliki kekeruhan berkisar 58-256 NTU. Air limbah dapat diolah melalui koagulasi menggunakan koagulan. Jamur merang dipilih menjadi bahan baku koagulan alami karena kandungan kitin yang dapat mengikat partikel negatif dengan baik, kitin yang diekstraksi menjadi kitosan dapat mengikat partikel negatif dengan kinerja yang lebih baik. Tujuan dari penelitian ini adalah untuk mengetahui karakterisasi biokoagulan kitosan dan kitin dari jamur merang, menentukan dosis dan pH optimum, dan melakukkan uji kinerja biokoagulan pada reaktor kontinyu. Kitin dan kitosan didapat dari tahapan deproteinasi dengan NaOH 3,5%, depigmentasi dengan NaOCl 0,315% dan deasetilasi dengan NaOH 50%. Rendemen kitin yang dihasilkan sebesar 16,821% dan rendemen kitosan yang dihasilkan sebesar 6,028%. Hasil penelitian menunjukkan adanya puncak pada 3429,43 cm-1 menunjukkan adanya amida dan amina (NH) sekunder 1629,85 cm-1 pada kitin, sedangkan kitosan menunjukkan adanya puncak 3450,65 cm-1 akibat tumpang tindih OH dan amina (NH). Dosis optimum kitin dan kitosan yang didapat dari pengujian jar test yaitu 600 ppm dan 650 ppm, dengan pH optimum yang didapat adalah 10 dengan efisiensi penurunan sebesar 88,37% dan 89,06%. Hasil reaktor kontinyu menunjukkan koagulan terbaik adalah kitosan dibandingkan dengan kitin, dengan nilai rata-rata efisiensi 68,09% dan 55,43%.
Agglomeration Decrement from Nanocellulose Synthesis by adding PVA Capping Agent Kusumawati, Endang; hidayatulloh, irwan; Elizabeth, Lidya
Jurnal Internasional Penelitian Teknologi Terapan Vol 4 No 2 (2023): October 2023
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v4i2.111

Abstract

Indonesia is one of the largest palm oil productions in the world. In 2017, Indonesia was responsible for almost 50% of global palm oil production. The abundant availability of Oil Palm Empty Fruit Bunches (OPEFB) has become a potential resource to be further utilized in derivative products such as cellulose, hemicellulose and lignin. The demand for nanocellulose material from extracted cellulose fibers is increasing. In this study, nanocellulose synthesis was carried out in several stages namely hydrolysis (H2SO4 64% (v/v) at 45oC for 45 minutes), delignification (NaOH 17,5% (w/v) at 80oC for 30 minutes), and bleaching (H2O2 10% (v/v) at 60oC for 15 minutes). Then, nanocellulose was subjected to ultrasonication. It was proved that nanocellulose with 50.487 nm diameters resulted from ultrasonication 50% amplitude. Moreover, adding 5%-w PVA (polyvinyl alcohol) as capping agent obtained 36.635 nm average diameter of nanocellulose. It showed nanocellulose synthesis successfully lowering agglomeration and maintaining diameter size of nano size.
Evaluation of Counter Current Horizontal Screw Extractor’s Performance in Determining Leaching Equilibrium of Clitoria ternatea Anthocyanins Ramadhani, Laily Isna; Hidayatulloh, Irwan; Nurcahyo; Trirahayu, Dhyna Analyes
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 2 (2024): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i2.17005

Abstract

Anthocyanin compounds as natural coloring substances contained in Clitoria ternatea flowers have higher antioxidant activity than anthocyanins from other flower extracts. Obtaining anthocyanin extract from Clitoria ternatea flower can be done using the solid-liquid extraction method. The objectives of this study include making a leaching equilibrium diagram of Clitoria ternatea flowers and determining the optimum L/S ratio and the number of equilibrium stages in the counter current horizontal screw extractor. In the maceration process, a leaching equilibrium diagram is produced, which is then used to design and determine the number of equilibrium stages. The equilibrium diagram of anthocyanins from Clitoria ternatea flowers with a gradient slope to the right is in accordance with the literature so that the equilibrium diagram can be used in the design of the extraction unit and the calculation of the theoretical stage of the multi-stage extraction unit. Based on the equilibrium diagram, the Number of Transfer Units (NTU) of 4 stages and the Height of the Transfer Unit value of this process is 0.105 m.
Adsorption of Methylene Blue Using Activated Carbon Bioadsorbent Coffee Grounds and Reed Grass Without Flow Rate Hidayatulloh, Irwan; Kurnia, Dianty Rosirda Dewi; Anggorowati, Heni; Muhari, Emma Hermawati; Kharisma, Luthfiana; Sari, Radianti Novita; Paramitha, Tifa; Sihombing, Rony Pasonang
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6269

Abstract

Methylene blue adsorption research has been conducted using bioadsorbents from activated carbon of coffee grounds and reeds. Coffee grounds and reeds contain carbon and cellulose that are effective for binding dyes. This study aims to determine the characteristics of activated carbon from coffee grounds and reeds based on SNI-06-3730-1995 and assess the color reduction of wastewater referring to the Decree of the Minister of Environment No. 51/MENLH/1995, which sets the maximum methylene blue content in industrial wastewater at 5-10 mg/L. The research method includes bioadsorbent preparation, characterization, and adsorption process with UV-Vis spectrophotometric analysis. Mass ratio variation was conducted on each adsorbent at each contact time variation and methylene blue concentration variation. The results of the analysis showed that the activated carbon of coffee grounds and reeds fulfills SNI-06-3730-1995 which is characterized by values that are below the maximum value in each parameter. The effectiveness of methylene blue adsorption by coffee grounds and reeds activated carbon reached 98.15% at a ratio of coffee grounds and reeds activated carbon 0:1 (w/w) for 120 minutes at a concentration of 25 mg/L. The adsorption capacity using the Freundlich isotherm method on reed activated carbon was 1.100 mg/g and coffee grounds activated carbon was 1.019 mg/g. The adsorption process of coffee grounds and reeds activated carbon has no effect on the carbon and cellulose structure of coffee grounds and reeds contained in activated carbon, namely O-H, C-H, C=C, and C=O.
PELATIHAN DAN PEMBUATAN MATERI UJI KOMPETENSI (MUK) SKEMA PENANGGUNG JAWAB PENGOPERASIAN PENGOLAHAN AIR LIMBAH (POPAL) Hidayatulloh, Irwan; Budiastuti, Herawati; Soeswanto, Bambang; Kusumawati, Endang; Trirahayu, Dhyna Analyes; Paramitha, Tifa; Ramadhani, Laily lsna; Elizabeth, Lidya
Jurnal Difusi Vol. 7 No. 2 (2024): Jurnal Difusi
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/difusi.v7i2.5561

Abstract

Ada 5 (lima) unit kompetensi dari draft skema okupasi Penanggung Jawab Pengoperasian Pengolahan Air Limbah (POPAL) yang sedang dibuat dan sekaligus akan diberikan dalam pelatihan bagi guru-guru SMK Negeri 7 Bandung oleh dosen-dosen Teknik Kimia, Politeknik Negeri Bandung. Unit kompetensi yang dimaksud yakni Mengoperasikan Instalasi Pengolahan Air Limbah (IPAL), Menilai Tingkat Pencemaran Air Limbah, Melakukan Perawatan IPAL, Mengidentifikasi Bahaya Pengolahan Air Limbah, dan Melakukan Tindakan Keselamatan Kerja terhadap Bahaya dalam IPAL. Dengan demikian para asesor di kedua institusi pendidikan ini dapat memiliki kompetensi dalam membuat MUK dimana MUK menjadi persyaratan wajib dalam pengusulkan draft skema yang akan diajukan untuk dilisensi oleh Badan Nasional Sertifikasi Profesi (BNSP) Indonesia. Hingga saat ini, terdapat beberapa kegiatan yang telah dilaksanakan. Pertama, koordinasi dan pertemuan telah dilakukan dengan pihak mitra untuk sinkronisasi pelaksanaan kegiatan. Kedua, koordinasi internal tim PkM untuk membahas pembagian tugas, rencana pembuatan MUK, dan rencana pelaksanaan pelatihan bagi para peserta pelatihan. Ketiga, merupakan pelaksanaan pelatihan mengenai pembuatan MUK unit kompetensi 1 dan 2. Keempat, merupakan lanjutan pelakasanaan kegiatan pelatihan mengenai pembuatan MUK untuk unit kompetensi 3, 4 dan 5.
Co-Authors Alifia Nuraeni Ari Marlina Awalum Melanitria Bambang Soeswanto Bintang Iwhan Moehady Bintang Iwhan Moehady Chandra Aztaris Dea Rahmawati Dhara Firdausa Elizabeth, Lidya Endang Kusumawati Endang Kusumawati Febrianti, Pipit Fera Rahma Vrilian Herawati Budiastuti Intan Puspitarini Kharisma, Luthfiana Kurnia, Dianty Rosirda Dewi Moch Adli Darojat Moehady, Bintang Iwhan Muhari, Emma Hermawati Nancy Siti Djenar Naura Alfairuzy Quluby Nurcahyo Nurcahyo Paramitha, Tifa Permanasari, Ayu Ratna Rahmat Dani Dwi Fedianto Ramadhani, Laily Isna Ramadhani, Laily lsna Revani Triananda Sari, Radianti Novita Saripudin Sheilla Aulia Sofiatul Mardiah Shoerya Shoelarta Sihombing, Rony Pasonang Sudrajat Harris Abdulloh Syabila, Mira Rachmawati Trirahayu, Dhyna Analyes Widiastuti, Endang Widyanti, Emmanuela Maria Yulistiani, Fitria