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All Journal Jurnal Teknologi JURNAL INTEGRASI PROSES Teknika: Jurnal Sains dan Teknologi Prosiding Semnastek Jurnal Kartika Kimia International Journal of STEM Education for Sustainability Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Rekayasa Kimia & Lingkungan
Rudi Hartono
Jurusan Teknk Kimia, Fakultas Teknik, Universitas Sultan Ageng Tirtayasa
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Other

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PEMBUATAN BIODIESEL DARI DEDAK PADI DENGAN PROSES TRANSESTERIFIKASI MENGGUNAKAN KATALIS ZEOLIT ALAM BAYAH Rudi Hartono; Meliana R; Nurlaila Nurlaila; Rusdi Rusdi; Anondho Wijanarko; Heri Hermansyah
Prosiding Semnastek PROSIDING SEMNASTEK 2017
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Biodiesel, bahan bakar alternatif yang dapat diperoleh dari minyak tumbuhan dan lemak hewan.Biodiesel dapat diperbaharui, biodegradable, ramah lingkungan dan tidak beracun. Objek percobaan menggunakan dedak padi sebagai bahan baku, diperoleh dari proses ekstraksi menggunakan N-hexane. Metode yang digunakan untuk memproduksi biodiesel adalah transesterifikasi asam dan transesterifikasi basa menggunakan metanol dan katalis. Katalis yang digunakan dalam percobaan adalah katalis homogen  H2SO4 dan katalis heterogen zeolit alam yang diperoleh dari Bayah Banten. Preparasi biodiesel dilakukan dengan memvariasikan temperatur pada transesterifikasi basa 50°C, 60°C dan 70°C. Zeolit di preparasi dengan poses impregnasi padi variasi konsentrasi KOH/zeolit (25 gr KOH dalam 100 ml air destilasi, 37.5 gr KOH dalam 100 ml air destilasi dan 50 gr KOH dalam 100 ml air destilasi).  Waktu  reaksi 60 menit dengan konsentrasi katalis 2%. Spesifikasi biodiesel yang dihasilkan sesuai dengan Standar nasional Indonesia (SNI) dengan hasil terbaik pada variasi temperature 60°C
PEMBUATAN BIODIESEL DARI MINYAK DEDAK PADI DENGAN PROSES KATALIS HOMOGEN SECARA ASAM DAN KATALIS HETEROGEN SECARA BASA Rudi Hartono; Rusdi Rusdi; Anondho Wijanarko; Heri Hermansyah
Prosiding Semnastek PROSIDING SEMNASTEK 2016
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Pembuatan biodiesel dari minyak dedak padi yang berasal tumbuhan yang dapat direnewable.  Biodiesel yang dihasilkan dari      dedak padi     diawali dengan memisahkan dedak halus dan dedak kasar  dengan   proses   screening.   Hasil   screening   berupa   dedak   kasar   dan   halus   yang   di   ekstraksi   dengan  menggunakan pelarut       diperoleh minyak dan pelarut , dan dengan proses distilasi didapatkan minyak  dedak padi. Minyak dedak padi yang dihasilkan dari proses ektraksi dengan pelarut di buat biodiesel  dengan   menggunakan   katalis   homogen   secara   asam   dengan   persen   katalis   2%  v      dari   bahan   baku,  Tahap     katalis  heterogen     secara   basa   dengan    persen    katalis  3   %  b   dari   bahan    baku.Tahap  transesterifikasi asam dan tranesterifikasi basa menggunakan variasi rasio minyak dedak padi terhadap  methanol (1:7)  Hasil  analisa   yang   didapat   adalah   %   yield,   nilai   viskositas   dan   densitas.  Perolehan   biodiesel   yang                                                                                                        0  optimum pada pembuatan biodiesel secara katalis homogen dan heterogen pada suhu 60  C dan waktu  operasi   2   jam   adalah   61,6%  yield,   27,4024   mm2/s   viskositas   dan   0,936   gram/mL   densitas  dengan perbandingan KOH/ZABBrht           100 gr/100mL.  Kata Kunci: Minyak Dedak Padi,           biodiesel, Transesterifikas, Katalis Homogen, Katalis Heterogen
POTENSI MINYAK DEDAK PADI SEBAGAI BAHAN BAKU PEMBUATAN BIODIESEL DENGAN PROSES TRANSESTERIFIKASI ASAM DAN BASA Rusdi Rusdi; Irfan Saptanjani; Rudi Hartono
Prosiding Semnastek PROSIDING SEMNASTEK 2015
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Biodiesel adalah  hasil reaksi transesterifikasi dari minyak yang berasal tumbuhan atau hewani yang bisa direwenabel. Biodiesel yang dihsilkan dalam penelitian ini berasal dari  dedak padi. Proses pembuatan biodiesel dari dedak padi diawali dengan memisahkan dedak halus dan dedak kasar dengan proses screening. Hasil screening berupa dedak kasar dan halus yang di ekstraksi dengan menggunakan pelarut diperoleh minyak dan pelarut dan dengan proses distilasi didapatkan minyak dedak padi. Minyak dedak padi yang dihasilkan dengan proses transesterifikasi asam pada temperatur  600C selama 30 menit,  rasio methanol dan minyak dedak padi ( 1:1) dan 2% asam sulfat. Tahap transesterifikasi basa menggunakan variasi rasio minyak dedak padi terhadap Methanol [1:1, 1:2, 1:3, 1:4 1:5] pada temperatur 60oC .  Hasil analisa didapat nilai densitas dan viskositas yang memenuhi standar mutu sebesar 853 kg/m3  dan 2,43 mm2/s pada dedak kasar dan  844 kg/mm3 dan 2,7 mms/s pada dedak halus dengan rasio bahan baku 1:1.
Synthesis of Biodiesel from Waste Cooking Oil Using Heterogeneous Catalyst (CaO) Based on Duck Eggshell with Transesterification Reaction Dian Susvira; Rudi Hartono; R. A. Fauzantoro
Jurnal Kartika Kimia Vol 5 No 1 (2022): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v5i1.122

Abstract

Biodiesel is produced from esterification and transesterification reactions of various vegetable oils such as coconut oil, palm oil, seed oil, soybean oil, etc. Waste cooking oil has the potential as a raw material for making biodiesel due to its abundant availability. The use of the CaO catalyst from duck eggshells can increase biodiesel quality. This study aimed to obtain the best catalyst with a high yield in biodiesel production using the transesterification method. The initial stage begins with activating the impregnated duck eggshell catalyst with various concentrations of KOH in distilled water (10 g KOH/100 mL, 15 g KOH/100 mL, 20 g KOH/100 mL, and 25 g KOH/100 mL). Followed by biodiesel synthesis steps using temperature variations in transesterification (45ËšC, 55ËšC, and 65ËšC) in reaction times of 1, 2 and 3 hours using 2% catalyst concentration to the amount of waste cooking oil and a molar ratio of methanol: oil (7:1). The experimental results showed that transesterification of waste cooking oil could be improved with the presence of a CaO heterogeneous catalyst. The values of density, Free Fatty Acid (FFA), viscosity, and the acid number obtained was adjusted to the parameters using SNI:7182:2015. Only the total ester parameter (96.02%) and the cetane number (40.4) did not meet the requirements. Keywords: biodiesel, duck eggshell, waste cooking oil
PENGARUH IMPREGNASI KOH PADA KATALIS BENTONIT BOJONG MANIK LEBAK BANTEN DALAM SINTESIS BIODIESEL DARI MINYAK JELANTAH Rudi Hartono; Muhammad Triyogo Adiwibowo; Meri Yulvianti; Agus Rochmat; Ali Faozin; M. Abdurahman Aziz; Sartika Arbantini
JURNAL INTEGRASI PROSES VOLUME 11 NOMOR 1 JUNI 2022
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v11i1.14723

Abstract

Biodiesel is an alternative fuel from renewable resources that is more environmentally friendly. This study aimed to obtain the optimum conditions for making biodiesel from used cooking oil based on the percentage of NaOH impregnation on bentonite catalysts from Bojong Manik Lebak Banten. The biodiesel synthesis method used is base transesterification. The impregnation process prepared bentonite as a catalyst at variations of %KOH, namely 20, 26, 31, and 35% (w/w). The biodiesel reaction was carried out at a temperature of 60°C and a reaction time of 3 hours using a 3% catalyst for the amount of used cooking oil. The results were obtained at optimum conditions on a catalyst of 26% KOH (w/w) with a biodiesel yield of 91.2%, density of 0.870 g/mL, the viscosity of 4.1 cSt, the flash point of 129°C, and methyl ester content of 97.48%.
PENGARUH PENAMBAHAN LILIN LEBAH DAN GLISEROL PADA EDIBLE COATING BERBASIS PATI TALAS BENENG TERHADAP KUALITAS BUAH STROBERI Wardalia Wardalia; Nufus Kanani; Rudi Hartono; Muhammad Triyogo Adiwibowo
JURNAL INTEGRASI PROSES Vol 11, No 2 (2022)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v11i2.18000

Abstract

Buah stroberi merupakan komoditas buah-buahan yang bernilai ekonomi tinggi namun umur simpannya pendek. Kerusakan buah disebabkan oleh proses respirasi dan transpirasi. Salah satu cara untuk menekan terjadinya transpirasi yaitu dengan aplikasi edible coating berbahan dasar pati alami seperti pati dari talas beneng. Penelitian ini bertujuan untuk mendapatkan komposisi optimum edible coating dari pati talas beneng dengan campuran lilin lebah dan gliserol terhadap kualitas buah stroberi. Tahapan dalam memproduksi edible coating ini preparasi matrik edible coating dengan cara melarutkan pati dengan konsentrasi 3% dalam akuades. Larutan pati dicampurkan gliserol dengan konsentrasi 0,5; 1; dan 2% (v/v) lalu masing masing campuran ditambahkan lilin lebah dengan variasi konsentrasi 0,4; 0,8; dan 1,6% (w/v). Hasil analisis menunjukkan bahwa edible coating berbasis pati talas beneng pada hari ke 5 didapatkan hasil yang terbaik, dengan penambahan gliserol dengan konsentrasi 1% dan lilin lebah dengan konsentrasi 1,6% memberikan susut bobot dengan nilai terendah 15,7%, menghambat penurunan kadar gula dengan nilai kadar gula 3,2% dan menghambat penurunan kadar vitamin C sebesar 12% sehingga dapat dikatakan bahwa edible coating berbasis pati talas beneng dengan penambahan gliserol dan lilin lebah dapat meningkatkan kualitas buah stroberi.
Degradation of methyl ester sulfonate using TiO2 photocatalyst Muhammad Triyogo Adiwibowo; Ahmad Sukarya; Fauzi Ramdani Aryanto Putra; Marta Pramudita; Rudi Hartono; Alia Badra Pitaloka
Jurnal Teknika Vol 18, No 2 (2022): Available Online in November 2022
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v18i2.16940

Abstract

One common domestic waste in the waters is detergent residue due to the daily habit of washing clothes. Thus, wastewater treatment is needed to purify the water. One of the methods is photocatalytic degradation. In this study, TiO2 nanoparticles were used to degrade methyl ester sulfonate (MES), one of the raw materials for making detergents. This study aims to investigate the effect of TiO2 concentration, reaction time, and light source on the MES degradation. The variations of the degradation tests included photocatalyst concentrations of 0.5, 1, and 1.5 mg/L, irradiation times of 1, 2, and 3 hours, and UV lamps and sunlight. The residual surfactant in water was analyzed using the Methylene Blue Active Surface (MBAS) method. The principle of this method is that MES will bind to methylene blue to form a complex blue compound so that its concentration can be quantified using a UV-Vis spectrophotometer. This study showed that the higher photocatalyst concentration increased the surfactant degradation from 11.97% to 33.91%, and the longer the degradation time, the more surfactant was degraded up to 41.56% after 3 hours. The sunlight source produces 55.72% degradation, more than a 10-watt UV lamp. The MES degradation follows the second-order reaction equation with a rate constant of 0.0963 L/mg.hour.
Development of Used Cooking Oil Circulation Reactor for Biodiesel Production as Learning Media of Vocational Mechanical Engineering Student Rudi Hartono; Yus Rama Denny; Sulaeman Deni Ramdani; Lusiani Dewi Assaat
International Journal of STEM Education for Sustainability Vol 3, No 1 (2023)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI) 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/ijses.v3i1.161

Abstract

This study aimed to develop and test the feasibility of a waste cooking oil-based biodiesel reactor prototype media used as a learning medium with a circulation system. The method in this research is Research and Development using the Waterfall model. The stages in the waterfall development model are (1) requirements definition including (needs analysis, analysis of used cooking oil characteristics, analysis of renewable energy, hardware requirements), (2) implementation and unit testing, (3) integration and system testing including: (testing the reactor, and testing the appropriateness of the media and materials), (5) operation and maintenance include: (testing the biodiesel reactor to students ). The research subjects were three lecturers as material expert validators and media experts and ten mechanical engineering vocational students as users to test the product's feasibility. The research results are as follows; development of biodiesel reactor media and results of feasibility research by media experts got an average score of 4.48 with the category "very feasible." Assessment by material experts got an average score of 4.5 with the category "very feasible," and ratings from users got an average score of 4.095 with the category " decent."
Synthesis of Lactic Acid from Molasses by Lactobacillus acidophilus Using a Batch Fermentation Process Rahmayetty Rahmayetty; Meri Yulvianti; Rudi Hartono
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 2 (2022): Jurnal Rekayasa Kimia & Lingkungan (July - December, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.882 KB) | DOI: 10.23955/rkl.v17i2.25657

Abstract

Lactic acid is a chemical with widespread applications, mainly in pharmaceutical, cosmetic, chemical as well as food industries. One of the major uses of lactic acid is the polylactic acid (PLA) feedstock which is biodegradable and biocompatible as an alternative to plastic derived from fossil fuels. Efforts continue to be made to reduce the cost of producing PLA in order to compete with the conventional petrochemical-based plastics. This include the use of molasses as a raw material because it is cheap and contains high glucose. The purpose of this study was to obtain cell concentrations through the addition of starter volume that produces high concentrations of lactic acid and to obtain the growth kinetics of Lactobacillus acidophilus during the fermentation process. This study was conducted in several stages; the design of bioreactors, inoculation of Lactobacillus acidophilus, and fermentation of molasses. In a batch system, molasses substrate was directly inserted as much as 500 ml in the fermentor and the addition of starter volume of Lactobacillus acidophilus was 1; 3; 5 dan 10% v/v. The fermentation of molasses for 72 hours and the product was analysed every 8 hours.  The highest concentration of lactic acid produced in batch fermented molasses was added to 5% (v/v) starter volume with 72 hours of fermentation time, which was 23.1 mg/L, with value the carrying-capacity coefficient (k) and the maximum net specific growth rate (µnet) were 0.2379 h-1 and 0.0160 h-1 respectively.
PEMBUATAN BIODIESEL DENGAN REAKTOR BERSIRKULASI SEDERHANA MENGGUNAKAN KATALIS KOH Rudi Hartono; Yus Rama Denny; Deni Sulaiman Ramdhani; Lusiani Dewi Assaat; Agie Wildha Priakbar; Wusda Hetsa Ribawa
Jurnal Teknologi Vol 15, No 1 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.1.123-132

Abstract

The high use of petroleum causes petroleum reserves to deplete, this is because petroleum is a natural resource that cannot be renewed. The purpose of this research is to make biodiesel using a simple circulating reactor and analyze biodiesel so that biodiesel is obtained which is suitable for use and according to general biodiesel standards. This research is limited by several variables consisting of fixed variables, namely raw materials in the form of 20 liters of used cooking oil, 100 g of KOH catalyst, and a reaction temperature of 600C, while the independent variables are the circulating stirring time for 55, 60, and 65 minutes, and the ratio feeds were 17% v/v and 21% v/v methanol. The stages of research carried out are preparation of raw materials, manufacture of biodiesel, and testing of biodiesel. Preparation of raw materials by preparing used cooking oil, KOH catalyst and methanol. Biodiesel production is carried out in a simple circulating reactor. The biodiesel tests carried out were density, viscosity, Free Fatty Acid (FFA) levels, Flash Point, Pour Point, cetane numbers, and Heat Heating Value (HHV). The research that has been done has produced biodiesel that complies with the SNI biodiesel standard. The density of biodiesel produced is in the range of 856.4-868.4 kg/m3. The resulting viscosity ranges from 2.98-3.41 cSt. The cetane number ranged from 57.3 to 58.2. Flash point ranges from 39.5-150.5oC. The pour point is around 9oC and the HHV is 9371-9490 kcal/kg. Generally, the yield of biodiesel produced is 75-90%. The optimum conditions for making biodiesel are at a variation of 17% v/v methanol with a reaction temperature of 60oC and a reaction time of 55 minutes.
Co-Authors Agie Wildha Priakbar Agus Rochmat Ahmad Sukarya Ali Faozin Alia Badra Pitaloka Anondho Wijanarko Anondho Wijanarko Deni Sulaiman Ramdhani Dian Susvira Endi Permata Fauzi Ramdani Aryanto Putra Handoyo Heri Hermansyah Irfan Saptanjani Lusiani Dewi Assaat Lusiani Dewi Assaat M. Abdurahman Aziz Maelani Marlo Siswahyu Marta Pramudita Meliana R Meri Yulvianti Muhammad Triyogo Adiwibowo Nufus Kanani Nurlaila Nurlaila R. A. Fauzantoro Rahmayetty Rahmayetty Rocky Alfanz Rusdi Rusdi Rusdi Rusdi Rusdi Rusdi Sadaharu Hamaguchi Sartika Arbantini Sulaeman Deni Ramdani Wardalia Wardalia Wusda Hetsa Ribawa Yus Rama Denny Yus Rama Denny Yus Rama Denny