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All Journal JTERA (Jurnal Teknologi Rekayasa) Majalah Ilmiah Pengkajian Industri Jurnal Energi dan Lingkungan (Enerlink)

Murti, Galuh Wirama

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Author-ID : 1479169

Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Articles

ULASAN TEKNOLOGI PRETREATMENT TERKINI LIMBAH CAIR POME SEBAGAI UMPAN DIGESTER BIOGAS Murti, Galuh Wirama; Pertiwi, Astri; Masfuri, Imron; Juwita, Asmi Rima; Adiprabowo, Arya Bhaskara; Dwimansyah, Ridho; Senda, Semuel Pati; Prasetyo, Dwi Husodo
JTERA (Jurnal Teknologi Rekayasa) Vol 4, No 1: June 2019
Publisher : Politeknik Sukabumi

Pengolahan anaerob merupakan teknologi efektif yang murah untuk mengolah limbah cair kelapa sawit (POME) menjadi biogas yang dapat dijadikan bahan bakar atau listrik. Yield biogas dapat ditingkatkan dengan menerapkan teknik pretreatment limbah POME sebelum menuju digester. Umumnya, teknik pretreatment ini adalah tahapan hidrolisis yang merupakan tahap pertama dari produksi biogas. Tujuan dari pretreatment ini untuk memecah padatan atau gumpalan komponen agar lebih mudah dicerna oleh bakteri. Studi ini berisi ulasan perbandingan keunggulan dan kelemahan beberapa metode pretreatment terkini termasuk dengan evaluasi biaya operasional yang sesuai untuk diaplikasikan pada pengolahan pretreatment limbah POME di PKS Sei Pagar. Berdasarkan hasil seleksi, teknik pretreatment dengan karakteristik limbah POME yang memiliki biaya operasional relatif rendah yaitu teknik ultrasonik dan ozonasi.

PEMANFAATAN PURE PLANT OIL (PPO) DARI KELAPA SAWIT UNTUK MENGURANGI KONSUMSI BAHAN BAKAR SOLAR DI PLTD TALANG PADANG Priyanto, Unggul; Prasetyo, Dwi Husodo; Rosyadi, Erlan; Murti, Galuh Wirama; Hastuti, Zulaicha Dwi; Syaftika, Novi
Majalah Ilmiah Pengkajian Industri Vol 13, No 3 (2019): Majalah Ilmiah Pengkajian Industri
Publisher : BPPT

Minyak nabati murni (Pure Plant Oil / PPO) dari kelapa sawit dapat digunakan sebagai subtitusi bahan bakar solar pada mesin diesel. PPO dapat digunakan dengan mencampurkannya dengan solar, sehingga mengurangi penggunaan bahan bakar fosil yang tidak ramah lingkungan. Akan tetapi, bahan bakar campuran PPO juga memiliki sisi negatif seperti Specific Fuel Consumption (SFC) yang tinggi, viskositas tinggi, nilai kalor yang rendah, dan emisi NOx yang cenderung sedikit lebih tinggi. Dalam studi ini berbagai campuran PPO dan solar diuji di PLTD. Hasilnya menunjukkan bahwa PPO sebaiknya digunakan dengan campuran solar dan proses pre-heating dilakukan sebelum masuk ke mesin. Penggunaan PPO juga teruji sebagai bahan bakar yang ramah lingkungan, kandungan sulfur yang rendah, serta menghasilkan emisi gas rumah kaca yang rendah. Agar PPO dapat digunakan pada mesin diesel, maka perlu beberapa perubahan seperti modifikasi mesin seperti pre-heating PPO, modifikasi sistem injektor, dual fuelling, dan blending PPO dengan solar. Kata kunci : biofuel, PPO, kelapa sawit, PLTD, performa mesin diesel

EVALUASI PLT BIOGAS TERANTAM COVERED LAGOON (CAL) 700 KW UNTUK PENGEMBANGAN PLT BIOGAS TIPE CSTR Rosyadi, Erlan; Rahmawati, Nurdiah; Pertiwi, Astri; Murti, Galuh Wirama; Fauzan, Naazi; Rini, Tyas Puspita; Muharto, Bambang; Bhaskara, Arya; Saputra, Hens
Majalah Ilmiah Pengkajian Industri Vol 13, No 3 (2019): Majalah Ilmiah Pengkajian Industri
Publisher : BPPT

Production of Crude Palm Oil (CPO) is increasing from year to year and is predicted to reach 41.6 million tons per year in 2018. Each ton of CPO will produce 3,28 m3 of POME during the production process. Improper handling of POME, besides causing soil pollution and flying, will release methane gas that categorized as GHG. BPPT cooperate with PTPN V utilized POME to produce biogas and then be converted into electricity in a Biogas Power Plant (PLTBg) in Terantam with a design capacity of 700 kW. The reactor used is a closed Anaerobic Lagoon (CAL) reactor equipped with a recirculation pump. From the evaluations, the technology chosen was not optimal from the operation, its evaluaed from the accumulation of cakes and sludge collected in the reactor which could be disturb during an anaerobic reaction. The next technology development will be carried out with the development of PLTBg in Sei Pagar using CSTR technology. At the same reactor capacity, CSTR has a faster HRT compared to CAL. CSTR is also easier in control of pH and temperature, also requires less land.Keyword : POME, Biogas, CSTR, Covered Lagoon, HRT, OLR

OPTIMASI PROSES PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT DAN JARAK PAGAR DENGAN MENGGUNAKAN KATALIS HETEROGEN KALSIUM OKSIDA Murti, Galuh Wirama; Rahmawati, Nurdiah; Heriyanti, Septina Is; Hastuti, Zulaicha Dwi
Jurnal Energi dan Lingkungan (Enerlink) Vol 11, No 2 (2015)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Production of biodiesel has been conducted through several processes such as esterification andtransesterification by homogeneous catalyst in which use either acidic or alkaline substances.Homogeneous catalysts have some negative impacts to the environment, because technically itrequires further treatment process such as washing. Therefore, the use of heterogeneouscatalysts is proposed to be best way to overcome this problem. The advantages of heterogeneouscatalysts are not only for its ease in recovery but also for its reusability. Moreover, it isenvironmentally friendly and cheap which only undergo a single process of transesterification.Calcium oxide is well-known as one of heterogeneous catalysts. It were activated by pretreatmentwith methanol and then it was continued by transesterification reaction. The optimal reactiono conditions were obtained at temperature 60 C, atmospheric pressure, and 4 h reaction time.Calcium oxides shows good activity in transesterification reaction using either palm or jatropha oil.The highest conversion of palm oil is approximately 62,51% within catalyst 3% by weight oil,whereas jatropha oil is approximately 53.10 % within catalyst 10% by weight oil. The regeneratedcatalyst shows low catalytic activity which is indicated by small presence of methyl ester in theproduct.Key words : biodiesel, heterogen catalyst, calcium oxide, palm oil, jatropha oil

THE EFFECT OF DIMETHYL ETHER (DME) AS LPG SUBSTITUTION ON HOUSEHOLD STOVE: MIXTURE STABILITY, STOVE EFFICIENCY, FUEL CONSUMPTION, AND MATERIALS TESTING Murti, Galuh Wirama; Priyanto, Unggul; Masfuri, Imron; Adelia, Nesha
Majalah Ilmiah Pengkajian Industri Vol. 15 No. 2 (2021): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

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DME has characteristics similar to LPG so that the storage and handling are not so different from LPG. DME could be used as a solvent that can extract typical types of rubber/polymer material. The aims and objectives of this study are to determine the effect of DME/LPG (100/0, 80/20, 50/50, 30/70, 20/80) on the stability of the DME/LPG mixture on the stove and also to observe the effect on several rubber materials/polymers on stove accessories. The study reveals that the usage of a DME/LPG mixture between 20/80 - 30/70 does not require a replacement of any substitute materials but only requires minor modifications to the stove. However, at a higher DME composition, the use of the fuel needs to replace the seal that is resistant to DME. It occurs due to the change of the gas composition when it is used.

Co-Authors Adelia, Nesha Adiprabowo, Arya Bhaskara Bhaskara, Arya Dwimansyah, Ridho Fauzan, Naazi Hastuti, Zulaicha Dwi Hens Saputra Heriyanti, Septina Is Juwita, Asmi Rima Masfuri, Imron Muharto, Bambang Pertiwi, Astri Prasetyo, Dwi Husodo Priyanto, Unggul Rahmawati, Nurdiah Rini, Tyas Puspita Rosyadi, Erlan Semuel Pati Senda Syaftika, Novi

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