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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Konversi JURNAL PENDIDIKAN TAMBUSAI Kinetika Chemical Engineering Journal Storage (CEJS) De Facto: Journal of international multidisciplinary sciences
Mustain Zamhari
Politeknik Negeri Sriwijaya
Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences

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CHARACTERISTIC AND CATALYTIC FOR MORDENITE AND ZSM-5 REACTION IN PRODUCE HYDROCARBONS Zamhari, Mustain
KINETIKA Vol 4, No 2 (2013): KINETIKA 01072013
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

Conversion of methanol to the use of the treated mordenite and ZSM-5 studied in this description. Mordenite catalyst activity which showed a decrease in activity without modified quickly. After hydrothermally dealuminated mordenite done and acidification with HCl, it turns out that longer life of the catalyst thus obtained. Furthermore treated mordenite showed high selectivity to olefin formation. Acidity is measured with predictably by Spectrophotometer Infra Red  observations of pyridine adsorbed, also signal of the adsorbed NO. Number of sites was reduced in the presence of acid dealumination treatment. There is no longer detectable acidity found in mordenite which has dealuminated well. Pore volume measured by the adsorption of toluene. The better stability and selectivity of the catalyst in forming various olefins in the use of the treated mordenite discussed here in terms of acidity and shape selectivity.
PEMBUATAN KATALIS HETEROGEN BASA DARI SERBUK KAYU AKASIA Zamhari, Mustain; ., Yuniar; Sari, Dita Indah; Saputri, Nuraldyla Suciaty
KINETIKA Vol. 10 No. 1 (2019): KINETIKA 01032019
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The purpose of this study was to produce heterogeneous catalyst based on activated carbon as a buffer impregnated with base solution and determine the effect of the concentration of a base solution and impregnation time. The ingredients used include acacia wood sawdust, hydrochloric acid (HCl), sodium hydroxide (NaOH), pottasium hydroxide (KOH) and aquadest (H2O). The study begins with the making of activated carbon from acacia wood sawdust by carbonizing the furnace at 500℃ for 4 hours then washing 0.1 M HCl. After that, 15 grams of activated carbon are impregnated in NaOH and KOH with a concentration of 1, 2, 3, 4 and 5 N for 18, 21 and 24 hours. After the implementation, the catalyst was analyzed by AAS, FTIR and SEM. The best condition that produced the catalyst with the highest content after impregnation, which was 80.92% for NaOH dan 85.63% for KOH, was obtained at a concentration of 5 N for 21 hours. The application of catalysts heterogeneus base in biodiesel was made with a reaction time of 120 minutes at 60℃ and the use of 3% b/b of used cooking oil.
PENGARUH VARIASI JENIS ABU BOILER DAN KOSENTRASI HCl TERHADAP SIFAT FISIS SILIKA GEL HASIL SINTESIS Meidinariasty, Anerasari; Purnamasari, Indah; Zamhari, Mustain; ., Fadarina; Permadi, Jekasyah; Fadillah, Nadia Zaky; Luthfiah, Sakinah
KINETIKA Vol. 11 No. 3 (2020): KINETIKA 01112020
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Efforts to minimize environmental pollution caused by solid waste in the form of boiler ash are managed and reused into new materials that have economic value. Boiler ash has a high enough silica content which can be used as an alternative raw material for making adsorbents in the form of silica gel. This study aims to synthesize silica gel from variations of boiler ash and determine the effect of HCl concentration on its physical properties. The boiler ash used comes from PT Tanjungenim Lestari Pulp and Paper, PT Pupuk Sriwidjaja and PT Sriwijaya Palm Oil Indonesia. Silica gel synthesis was carried out by extracting boiler ash with 3 M NaOH solution for 1 hour, then the extraction results in the form of Sodium Silicate were precipitated using HCl with various concentrations of 1, 3 and 5 M. The physical properties of the synthesized silica gel were analyzed by analyzing the SiO2 content, water content, and absorption capacity of water vapor. The effect of HCl concentration on the physical properties of the synthesized silica gel showed the highest yield value in SG PP, SG PS, and SG PO respectively amounted to 15.6176%, 21.6115% and 24.5215%.The highest SiO2 content value in a row in SG PP, PS SG and SG PO amounted to 39.48%, 52.73% and 50.74%.
PEMBUATAN KATALIS BERBASIS KARBON AKTIF DARI TEMPURUNG KELAPA (Cocos nucifera) DIIMPREGNASI KOH PADA REAKSI TRANSESTERIFIKASI SINTESIS BIODIESEL Zamhari, Mustain; Junaidi, Robert; Rachmatika, Nisa; Oktarina, Ayu
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The Research has been carried out on KOH catalyst/activated carbon as a heterogeneous base catalyst with the impregnation method to be applied in making biodiesel from used cooking oil. Activated carbon from coconut shell carbonized in a furnace at 500oC for 4 hours. After that, activated carbon was impregnated in a KOH solution with a concentration of 1 N, 2N, 3 N, 4 N, and 5 N for 18,21 and 24 hours. Catalyst is analyzed with AAS (Atomic Absorption Spectrophotometry) to see the content of potassium absorbed in the activated carbon. Analyzed SEM (Scanning Electron Microscopy) to see the characteristics of the catalyst that has been produced. Best condition which produced the catalyst with the highest potassium content after impregnation is 97.00% was obtained at a concentration of 5 N KOH with an impregnation time of 21 hours. Making biodiesel, variations of catalyst 1,3, and 5% are carried out with a reaction temperature of 45,55,65,75oC,cooking oil:methanol ratio of 1:6. The best biodiesel is obtained from a catalyst 3% at 55oC with a yield of 87.72%. Characteriszation of methyl ester product fulfill standart of biodiesel viscosity 4.7622 gr/ml, denistas 0.8709 gr/ml, acid number 1.4027 mgKOH/g, water content 0.0266%, flash point 176oC.
PEMBUATAN TEPUNG SERAT TINGGI DARI AMPAS KELAPA (COCOS NUCIFERA) DENGAN METODE PENGERINGAN BEKU VAKUM Purnamasari, Indah; Zamhari, Mustain; Putri, Shania
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Coconut plants are multipurpose plants that have high economic value. Coconut tree is often referred as the tree of life because almost all parts of the tree, roots, stems, leaves and fruit can be used for the needs of everyday human life. Coconut dregs are a by-product of making coconut milk. In the past, coconut dregs were only used as animal feed and tempe bongkrek, whereas with a relatively small capital it can be processed into other products such as flour. The purpose of this study was to determine the best temperature for making coconut dregs flour using the Vacuum Freeze Drying method. This drying process is carried out with several temperature variations, which is -8 °C, -10 °C, -12 °C, -14 °C and variations in the weight of 100 and 200 gram of coconut dregs, as well as fixed variables using primary drying time of 6 hours, secondary drying 4 hours at a temperature of 50°C, and using a vacuum pressure of 70 cmHg. In determining the quality of coconut dregs based on the nutritional content of crude fiber, protein, fat and water that’s contained in the product, through the analysis with Kjedahl and Soxhlet methods.
DESIGN OF KEMPLANG CRACKERS DRYER USING TRAY DRYER BY UTILIZING BIOMASS ENERGY Sari, Della Yusfita; Zamhari, Mustain; Junaidi, Robert
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 14, No 1 (2021): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v14i1.13210

Abstract

The drying process on kemplang crackers is one of the factors that determine the quality of the resulting product. Conventional drying has many disadvantages, namely fluctuating heat and poor hygiene that will affect product quality. So that kemplang crackers can be stored for a long time, it is necessary to reduce the water content of kemplang crackers. Drying kemplang crackers can use a drying rack with a biomass energy source from coconut shells. This study aims to design a tray dryer with biomass energy to obtain dryer performance based on the drying rate and to obtain a product that meets SNI No. 8272-2016. The treatments that were varied were set point temperatures of 55oC, 60oC, 65oC, and 70oC with mass variations of 50 gr, 100 gr, and 150 gr. The results showed that the optimum drying conditions at 70oC for 4 hours with an air velocity of 5.2 m/s2 obtained 9,84% moisture content in 50 gr kemplang crackers, 15.39% in 100 gr crackers and 19,2 in kemplang crackers 150 gr and a drying rate of 0,035028 kg/hour m2. The drying process requires 5,24 kg of dried coconut shell to produce heat energy of 95.358,81024 KJ with a by-product in the form of liquid smoke.
Manufacturing the activated carbon catalyst of impregnated palm core shells for biodiesel production Rifki, Ahmad; Zamhari, Mustain; Purnamasari, Indah
Konversi Vol 13, No 1 (2024): April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i1.17470

Abstract

This research aims to produce activated carbon-based heterogeneous catalyst derived from palm kernel shells impregnated with a KOH solution and to determine the effects of the concentration of the KOH solution and the time period during impregnation. The variables observed included KOH concentration and impregnation time. The impregnation process used KOH solution with the solution concentrations of 1N, 2N, 3N, 4N and 5N with impregnation process within 18 hours, 21 hours and 24 hours. AAS, FTIR and SEM were analyzed after impregnation with different concentrations and times. The results of the analysis of potassium metal showed the highest absorption occurred at a concentration of 5N within 21 hours at 25.4570%. The application of the activated carbon catalyst from palm kernel shells was conducted in making biodiesel. The process of making biodiesel was carried out with a reaction time of 120 minutes at a temperature of 60℃ with a molar ratio of 1: 12 using a catalyst of 2% (% w/w). Biodiesel yield testing referred to SNI 04-7182-2015. The analysis results obtained showed 879 kg/m3 density, 6.1 cst viscosity, 0.5 acid number, and 174℃ flash point.
Pembuatan Katalis CaO Superbasa dari Batu Kapur untuk Sintesis Biodiesel Ningsih, Sintya; Zamhari, Mustain; Dewi, Erwana
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10789

Abstract

Sebagian besar wilayah indonesia berpotensi memiliki batu kapur atau batu gamping. Dimana pulau Sumatera merupakan salah satu penghasil batu kapur terbesar di Indonesia, khususnya di Sumatera Selatan tepatnya di kota Baturaja, daerah Ogan Komering Ulu (OKU). Upaya yang dapat dimanfaatkan dari batu kapur sebagai katalis heterogen karena mengandung Kalsium Oksida (CaO). Pada penelitian ini batu kapur dikalsinasi dengan variasi suhu 750?C, 850?C, dan 950?C dengan waktu selama 3 jam, 4 jam, dan 5 jam. Intensitas CaO tertinggi yang didapatkan pada hasil analisa XRD yaitu pada suhu 950?C dengan waktu 4 jam. Adapun puncak karakteristik sebesar 2? = 32,27? ; 36,51? ; 51,73? ; 63,43? ; 66,21? ; 78,53? dan 84,62?. Rasio mol yang digunakan untuk mereaksikan minyak jelantah dan metanol yaitu sebesar 1 : 19 menggunakan proses transesterifikasi, dimana katalis CaO superbasa yang digunakan yaitu sebesar 2 gram pada suhu 60?C selama 1 jam dengan kecepatan pengadukan 750 rpm. Hasil analisis yang didapatkan yaitu yield biodiesel sebesar 84%, titik nyala sebesar 89,7?C, densitas sebesar 0,86 gr/cm3, dan viskositas sebesar 4,00 mm2/s.
Regeneration of Ni/Al2O3 catalyst in CO2 methanation Melati, Rima; Junaidi, Robert; Zamhari, Mustain
Konversi Vol 13, No 2 (2024): OKTOBER 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i2.19951

Abstract

CO₂ emissions are one form of greenhouse gas (GHG) emissions that contribute to global warming. CO₂ contributed 175.62 million tons in 2021, impacting greenhouse gas levels. One strategy to reduce the concentration of CO₂ in the atmosphere is to convert CO₂ gas into useful chemicals. One example of this is the hydrogenation of CO₂ to produce methane, which can serve as an alternative to LPG. The aim of this research is to produce methane gas by developing a fixed bed reactor in a simple manner. The catalyst Ni/Al2O3 with 20 grams and five regenerations could produce CH₄ up to 49.73% compared to 39.06% for those with 10 grams. However, the H2 gas remaining is higher for those with 10 grams (1.454 ppm compared to 1.042 ppm). Also, The CO2 gas remaining is higher for those with 10 grams (58.18% compared to 47.92%). The results of this study can be the basis for developing energy policies, encouraging investment in clean energy technologies, and supporting the reduction of greenhouse gas emissions for energy sustainability and resilience.
ANALISIS TERMAL PADA GRATE COOLER BERDASARKAN PARAMETER YANG MEMPENGARUHI Nurhakim, Ilham; Zamhari, Mustain; Kristiyono Putro, Abraham Abimanyu; Safaruddin, Safaruddin
DE FACTO : Journal Of International Multidisciplinary Science Vol 1 No 01 (2023): DE FACTO : Journal Of International Multidisciplinary Sciences
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/defacto.v1i01.477

Abstract

Grate cooler adalah alat pendingin yang letaknya setelah rotary kiln.Udara pendingin cooler didapatkan dari hembusan dari 13 unit fan. Udara ini akanmendinginkan klinker yang keluar dari kiln dengan metode pendinginan secara cepat atau disebut juga metode quenching. Grate cooler merupakan pendingin yang paling modern. Pada awal perkembangan pemakaian grate cooler dimaksudkan untuk mendapatkan laju pendinginan yang cepat dengan tujuan mengurangi pengaruh kristal periclase, sehingga diperoleh kualitas klinker yang baik, perpindahan panas yang baik sangat mempengharui cooler jenis ini agar dapat menerima klinker dengan temperatur ± 1400 – 1200 ?. Perpindahan yang terjadi di alat ini adalalah pada kondisi cross current dan counter current. Peralatan grate cooler tidak bisa dipisahkan letaknya dari kiln karena terpasang langsung menyambung pada outlet kiln.
Co-Authors ., Fadarina ., Yuniar Anerasari Meidinariasty Erwana Dewi Fadillah, Nadia Zaky Indah Purnamasari Kristiyono Putro, Abraham Abimanyu Luthfiah, Sakinah Ningsih, Sintya Nurhakim, Ilham Oktarina, Ayu Permadi, Jekasyah Putri, Shania Rachmatika, Nisa Ramadhani, Dea Rizki Rifki, Ahmad Rima Melati Robert Junaidi RR. Ella Evrita Hestiandari Saputri, Nuraldyla Suciaty Sari, Della Yusfita Sari, Dita Indah