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All Journal JURNAL INTEGRASI PROSES Konversi Jurnal Penelitian Ilmiah INTAJ Jurnal Chemurgy Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Journal of Green Chemical and Environmental Engineering
Fathoni, Rif'an
Department Of Chemical Engineering, Engineering Faculty, Mulawarman University
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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ADSORPSI LOGAM KADMIUM (Cd) PADA KADMIUM SULFAT (CdSO4) MENGGUNAKAN BATANG POHON PISANG SEBAGAI ADSORBEN Diaz Galuh Purwitasari; Rahma Tussania; Rif'an Fathoni
Jurnal Chemurgy Vol 6, No 1 (2022): Jurnal Chemurgy-Juni 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i1.7905

Abstract

Salah satu pemanfaatan limbah batang pohon pisang adalah dapat diolah menjadi adsorben yang dapat digunakan untuk mengurangi kandungan logam berat dalam sebuah limbah cair salah satunya menggunakan pengolahan dengan metode adsorpsi. Adsorpsi adalah suatu proses yang terjadi ketika suatu fluida (cairan maupun gas) terikat pada suatu padatan dan akhirnya membentuk lapisan tipis atau film pada permukaan tersebut. Tujuan penelitian ini yaitu untuk mengetahui kandungan logam berat Cd dalam kadmium sulfat serta mengetahui kecepatan pengadukan yang dapat menurunkan kadar Cd terbaik. Variable bebas pada penelitian ini yaitu kecepatan pengadukan yang terdiri dari 200, 250 dan 300 rpm. Variable terikat pada penelitian ini yaitu konsentrasi cadmium sulfat, masa adsorben, waktu kontak dan ukuran adsorben. Hasil penelitian ini didapatkan kapasitas adsorpsi terhadap penyisihan logam Cd menggunakan aktivator NaOH didapatkan nilai tertinggi yaitu 0,128 mg/L yaitu pada masa adsorben dengan kecepatan pengadukan 300 rpm dan waktu kontak 60 menit.
STUDI KINETIKA DEGRADASI LIMBAH ALKILBENZEN SULFONAT (ABS) DENGAN PROSES ELEKTRO FENTON Rif'an Fathoni; Purwanto Purwanto
Jurnal Chemurgy Vol 6, No 1 (2022): Jurnal Chemurgy-Juni 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i1.7746

Abstract

This study describes the effect of operating conditions such as weight ratio (H2O2/COD), the initial pH of waste and molar ratio fenton reagent (H2O2/Fe2+) to the degradation of waste alkylbenzene sulfonate (ABS). The degradation of ABS with the Electro Fenton process (E-Fenton) conducted in a laboratory scale batch reactor. The increasing doses of the weight ratio the production of hydroxil radicals will be increase and of course will increase the rate of organic degradation. Using a weight ratio that exceeds the theoretical calculations tend to decrease the degradation of ABS concentration. The weight ratio of 2,1 resulted in a decrease of ABS concentration, COD and BOD5 of 94,075%, 94,040%, 81,273%, respectively. Medium acidity (pH) is one of the most decisive factor of Electro-Fenton process, at a pH 3 yield degradation of ABS amounted 98,093%. ABS removal efficiency increased with the increase of ferrous ion dosage at fenton’s reagent molar ratio and reached highest of ABS concentration, COD and BOD5 of 99,05%, 96,64%, and 91,18%, respectively, for the operating time for 60 minutes. A kinetic study was carried out using first order reaction kinetics model. Temperature changes that occur when the research generates activation energy of 80,811 J/K.mol through the Arrhenius equation. Keywords: alkylbenzene sulfonat, arrhenius, electro fenton, fenton reagent, kinetic study
PREDICTION ANALYSIS OF FOULING MODEL ON HEAT EXCHANGER IN THE CRUDE OIL REFINERY Hairul Huda; Renanto Renanto; Totok Ruki Biyanto; Rif'an Fathoni; Tantra Diwa Larasati
Jurnal Chemurgy Vol 6, No 1 (2022): Jurnal Chemurgy-Juni 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i1.7672

Abstract

Fouling mainly occurs in the oil industry. Fouling is an unwanted deposit in HE (heat exchanger). Reliable fouling models are scarce, although empirical and theoretical models have been proposed to describe fouling in heat exchangers. The general models of empirical fouling used are linear, falling rate, and asymptotic. The research methodology begins with the acquisition and use of operational fouling data, which is then followed by the use of an asymptotic fouling model and ends with calculating the thickness of fouling in all HE. The object of this research study is all HE in the crude oil refinery HEN (heat exchanger network). The aim of this research is to use the asymptotic fouling model and get the fouling thickness. The fouling resistance from time to time increases, but in the end, it tends to be stationary, where for the final value, the highest fouling resistance is in HE-10, namely 14.8E-03 (m2°C/W), and the lowest value is fouling resistance at HE- 01 is 1.27E-03 (m2°C/W). The thickness of HE fouling in asymptotic conditions indicates that HE undergoes the same deposition process as suppression.Keywords: fouling, heat exchanger, asymptotic, crude oil refinery, heat exchanger network
OPTIMALISASI PROSES EKSTRAKSI MINYAK BIJI NYAMPLUNG MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM) Ahmad Moh. Nur; Hairul Huda; Rif'an Fathoni
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9450

Abstract

Nyamplung (Calophyllum inophyllum L.) is a plant with great potential as a fuel source that can be developed in Indonesia. The oil content of nyamplung seeds is 60-75%. This study aims to optimize the process of extracting oil from nyamplung seeds using hexane solvent at various operating conditions and obtain optimum extraction operating conditions. In the process stage, extraction will be carried out using hexane solvent with several operating variations, namely extraction temperature (35-45oC); extraction time (4-6 hours); stirring speed (200-600 rpm), the process of optimizing oil extraction from nyamplung seeds was carried out using the Response Surface Methodology (RSM). The oil obtained was then characterized through several analyzes, namely yield, acid number, density and viscosity. Based on the research results, optimization of the nyamplung seed oil extraction process resulted in an oil yield of 52.43% which was obtained at 40oC, 5 hours of extraction time and 500 rpm of stirrer speed. Optimization with the aim of maximizing the oil yield response was obtained 55.33% yield at 45oC, 6 hours extraction time and 600 rpm stirrer speed. Optimization of each oil quality does not produce a significant model response. The quality of the oil resulting from the optimization of the yield is an acid number of 10.51 mgKOH/g, a density of 0.94 g/ml, and a viscosity of 4.47 cP.Keywords: calophyllum, oil, optimization, response surface methodology 
KEMAMPUAN ADSORBSI LOGAM BERAT Zn DENGAN MENGGUNAKAN ADSORBEN KULIT JAGUNG (ZEA MAYS) Febbi Zulfania; Ari badin; Rif'an Fathoni; Ahmad Moh. Nur
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.8060

Abstract

Adsorpsi merupakan suatu proses pemisahan bahan dari campuran gas maupun cairan, bahan yang harus dipisahkan ditarik oleh permukaan adsorben padat lalu diikat oleh gaya-gaya yang berkerja pada permukaan tersebut. Karbon aktif merupakan salah satu adsorben yang paling sering digunakan untuk menjerap zat-zat tertentu pada suatu larutan seperti kandungan logam.. Kulit jagung memiliki kandungan selulosa yang cukup tinggi, sehingga dapat digunakan sebagai adsorben. Penelitian ini bertujuan untuk mengetahui pengaruh massa adsorben pada pengurangan kadar logam dan mengetahui pengaruh aktifator terhadap adsorbsi. NaOHsebagai aktivator karbon kulit jagung terhadap adsorpsi kadar logam dalam larutan ZnSO4. dimana diketahui kadar awal larutan ZnSo4 sebesar 15 mg/L. Dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 0,8 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 93%. Selanjutnya dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 1 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 73%.
Pemanfaatan Dan Penyuluhan Serai Menjadi Semprotan Anti Nyamuk Kepada Masyarakat Hairul Huda; Rif’an Fathoni; Tantra Diwa Larasati
Retii 2022: Prosiding Seminar Nasional ReTII ke-17
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mosquitoes are insects that carry many diseases to humans, such as Dengue Hemorrhagic Fever (DHF) and Malaria. This disease is prone to outbreaks in tropical or subtropical regions, especially during the rainy season. In puddles, mosquitoes can lay eggs and breed, causing a mosquito population explosion. This is very dangerous, mainly if it occurs in a community residential area. Therefore, efforts are needed to prevent the development of mosquito breeding, in addition to maintaining a clean environment and ensuring that there is no stagnant water. Steps are required to protect yourself from mosquito attacks, which can be done by using repellents or mosquito repellents. The materials used must also be natural and not use hazardous chemicals that can damage the environment or cause health problems. One is using the lemongrass plant, which contains citronellol and geraniol. This activity aims to provide information on the manufacture of mosquito repellent spray from lemongrass for the community. Anti-mosquito sprays do not harm the skin or health and are easy to make for the public.
Synthesis of Maltodextrin from Comercial Corn Starch with Variation of Alpha Amylase Concentration, Temperature and Hydrolisis Period for Determining Dextrose Equivalen Value Fathoni, Rif'an; Zahratunnisa, Zahratunnisa
Jurnal Chemurgy Vol 7, No 1 (2023): Jurnal Chemurgy-Juni 2023
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v7i1.5800

Abstract

Maltodextrin is defined as a partial starch hydrolysis product prepared by the addition of an acid or an enzyme, which contains α-D-glucose units which are mostly bound by - (1,4) glycosidic bonds. Maltodextrin is usually described by DE (Dextrose Equivalent). The commercial use of starch is affected by the DE value. The greater DE value means the more percentage of starch that turns into reducing sugars. This research was conducted by testing the DE value with maltodextrin production using alpha amylase enzyme catalyst by varying the enzyme concentration (0.2 ml; 0.4 ml; 0.6 ml), hydrolysis time (60 min; 90 min) and hydrolysis temperature (70°C ; 80°C). The results of the research give some point  that's the DE value obtained with the independent variables, which is  the time of hydrolysis and the concentration of the enzyme catalyst, experienced data fluctuations because the sample still had a lot of water. Also the higher of hydrolysis temperature, the greater DE value of maltodextrin was obtained.
PENGARUH WAKTU DAN KONSENTRASI ADSORBEN KULIT JAGUNG TERHADAP PENURUNAN KONSENTRASI LOGAM BERAT Fathoni, Rif'an; Nitami, Dwi Arum; Simanjuntak, M. Adika Fatturahman
Jurnal Chemurgy Vol 8, No 1 (2024): Jurnal Chemurgy-Juni 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v8i1.12455

Abstract

Penyerapan (Adsorpsi) secara umum adalah suatu proses pemisahan bahan dari campuran gas atau cair, bahan yang harus dipisahkan ditarik oleh permukaan adsorben padat dan diikat oleh gaya-gaya yang berkerja pada permukaan tersebut. Karbon aktif (adsorben) merupakan material amorf berkarbon yang memiliki luas permukaan yang besar yang dibangun oleh struktur pori internalnya melalui proses karbonisasi dan aktivasi. Karbon aktif mengandung 85-95% karbon, dihasilkan dari bahan-bahan yang mengandung karbon dengan pemanasan pada suhu tinggi. Salah satu bahan yang dapat diolah menjadi karbon aktif ialah kulit jagung yang memiliki kandungan selulosa yang cukup tinggi sehingga dapat menyerap kandungan logam yang ada di dalam larutan. Penelitian ini menggunakan H 2O2 sebagai akivator karbon aktif kulit jagung terhadap adsorbsi kadar logam dalam larutan CuSo 4, mula-mula diketahui kadar awal larutan CuSo 4 sebesar 15 mg/L kemudian dilakukan adsorbsi menggunakan karbon aktif kulit jagung yang telah diaktivasi sehingga diperoleh hasil kadar CuSo4 sebesar 0,003 mg/L dengan penurunan sebesar 99%, hal ini dikarenakan karbon aktif kulit jagung ini memiliki kemampuan yang baik dalam penyerapan kandungan logam.
Adsorbent Based On Coconut Fabric As A Metal Remover In Drill Well Water Fathoni, Rif'an; Pratikawati, Hesiany Febby; Supi, Supiansyah
Jurnal Chemurgy Vol 7, No 1 (2023): Jurnal Chemurgy-Juni 2023
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v7i1.5892

Abstract

This study aims to determine the characteristics of coconut coir activated charcoal as adsorbent, the effect of pH and interaction time on the adsorption ability of Fe. Coconut husk was calcined at 300°C for 1 hour, then activated with ZnCl2. Characterization of coconut husk activated charcoal using Atomic Absorption Spectrophotometry method. Determination of the effect of adding coconut coir activated charcoal on Fe adsorption at various time variations, namely 30, 60, and 90 minutes. The results of the first phase of research showed that the water and ash content of coconut coir activated charcoal were 12,17% and 0,8569%, respectively. The second stage of research shows that time variation affects the adsorption ability of Fe. The results of the third phase of research indicate that the characteristic testing phase of activated charcoal can remove the smell of iron (Fe) in well water.
PROSES PEMBUATAN DAN UJI KARAKTERISTIK BIOETANOL DARI KULIT NANAS (ANANAS COMOSUS) Kahar, Abdul; Fathoni, Rif'an; Ardiah, Rida; Mulyani, Nunuk
Jurnal Chemurgy Vol 9, No 1 (2025): Jurnal Chemurgy-Juni 2025
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v9i1.16350

Abstract

Bioethanol is one solution to reduce the exploitation of fossil energy produced from biomass fermentation. Bioethanol production can be done from starchy plants or those containing carbohydrates, glucose and cellulose. One of them is pineapple skin, pineapple skin is fruit waste which has quite high sugar and carbohydrate content. The Central Statistics Agency (BPS) reports that pineapple production in Indonesia will reach 2.89 million tons in 2021. This number grew 17.89% compared to the previous year which amounted to 2.45 million tons. The process of making bioethanol begins with preparation, hydrolysis, fermentation, distillation and FTIR analysis. The hydrolysis process uses acid hydrolysis using hydrochloric acid (HCL) and the best hydrolysis is obtained at a temperature of 100 C to produce the highest sugar content, namely 17% Brix. The fermentation process using saccaromyces cerevisiae yeast for 14 days with pH control under acidic conditions, namely 4-5 yeast gnats used can work optimally. The alcohol content after distillation was found to be >80. The FTIR test showed that there was ethanol in the bioethanol sample from pineapple skin.
Co-Authors Abdul Kahar Agatha Permatasari Mayang Agus Anggriawan Ahmad Moh. Nur Anton Irawan Ardiah, Rida Ari badin Ari Susandy Sanjaya, Ari Susandy Ariyani Ariyani Dermawan, Rizki Kurnia Diaz Galuh Purwitasari Eka R. P. Febbi Zulfania Hairul Huda Indah Wahyuni Jonathan Lutfi Nurohmah M. Yanggi Atwanda Mardiah Mardiah Mulyani, Nunuk Nitami, Dwi Arum Nurhazizah Lubis P Purwanto Paradila Apriliani Wulandari Pratikawati, Hesiany Febby Putri A. R. Rahma Tussania Renanto Handogo Reni Puspita Sari Rifaido Herlan Rizka Marlina Rizki Kurnia Dermawan Rumpaisum, Samuel Gidan Simanjuntak, M. Adika Fatturahman Siti A'isyah Supi, Supiansyah Tantra Diwa Larasati Tantra Diwa Larasati Totok Ruki Biyanto Vyra Kredha Nagari Yazid Bindar Zahratunnisa, Zahratunnisa