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Mustain Zamhari
Politeknik Negeri Sriwijaya
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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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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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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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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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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.
Co-Authors ., Fadarina ., Yuniar Anerasari Meidinariasty Fadillah, Nadia Zaky Indah Purnamasari Luthfiah, Sakinah Oktarina, Ayu Permadi, Jekasyah Putri, Shania Rachmatika, Nisa Robert Junaidi Saputri, Nuraldyla Suciaty Sari, Della Yusfita Sari, Dita Indah