Claim Missing Document
Check
Articles

Found 11 Documents
Search

Kinetika Reaksi Oksidasi Asam Miristat, Stearat, dan Oleat dalam Medium Minyak Kelapa, Minyak Kelapa Sawit, serta Tanpa Medium Desnelli Desnelli; Zainal Fanani
Jurnal Penelitian Sains Vol 12, No 1 (2009)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.698 KB) | DOI: 10.56064/jps.v12i1.188

Abstract

Kinetika reaksi oksidasi asam miristat, asam oleat dan asam stearat dalam medium minyak kelapa dan kelapa sawit telah dipelajari dengan mengukur pengurangan luas kromatogram asam lemak dengan kromatografi gas. Hasil penelitian menunjukan bahwa reaksi oksidasi asam miristat, asam oleat dan asam stearat mengikuti reaksi orde-1. Hasil penentuan energi aktivasi menunjukkan bahwa energi aktivasi asam oleat lebih kecil dibanding asam miristat dan asam stearat dalam minyak kelapa , minyak kelapa sawit maupun tanpa medium. Dari hasil tersebut menunjukkan bahwa asam oleat lebih cepat teroksidasi dibanding asam stearat dan asam miristat. 
Uji Kualitas Sabun Padat Transparan Dari Minyak Kelapa Dan Minyak Kelapa Sawit Dengan Antioksidan Ekstrak Likopen Buah Tomat Zainal Fanani; Almunady T. Panagan; Novita Apriyani
Jurnal Penelitian Sains Vol 22, No 3 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.915 KB) | DOI: 10.56064/jps.v22i3.600

Abstract

Increasing population growth causes demand for daily necessities to increase as well, one of which is soap, because almost all humans use soap to wash and clean themselves. The purpose of this reseacrh was to determine the optimum ratio of coconut oil and palm oil to produce the best transparent solid soap and tomato lycopene extract added to maximize the benefits of the soap. Characterization includes water content, total fat, insoluble material in ethanol, free alkali, free fatty acids, non-soaped fats, pH, foam stability, and antioxidant activity from lycopene. The best result was soap with ratio of coconut oil and palm oil 1: 0. The resulting soap has a high transparency, smooth foam, water content of 3.546%, foam stability of 96%, and pH of 10. Soap accordance with SNI3532-2016, except the unsaponifiables fat.  The analysis results obtained water content of 3.486%, total fat of 73.616%, insoluble material in ethanol of 1.2%, free fatty acid of 0.564%, negative free alkali, unsaponifiables fat of 0.7294% and Lycopene antioxidant activity of 54.85 µg/mL.
Perengkahan Tir Batubara Dengan Menggunakan Katalis Ni-Mo-S/ZAA Bambang Yudono; Zainal Fanani; Hasanudin Hasanudin
Jurnal Penelitian Sains Vol 10, No 3 (2007)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7280.759 KB) | DOI: 10.56064/jps.v10i3.455

Abstract

Penelitian ini mempelajari tentang pengaruh temperatur, laju alir dan berat katalis Ni-Mo-S/ZAA terhadap hidrocracking tir batubara untuk menghasilkan fraksi bensin dan fraksi kerosin serta kalor pembakaran produk tersebut. Proses hidrocracking tir batubara dilakukan pada temperatur 300-400°C, laju alir gas hidrogen 1-2 mL/det dan jumlah katalis 0,25-1,0 g. Produk hidrocracking tir batubara dianalisa dengan menggunakan alat infra merah, kromatografi gas dan kalorimeter. Hasil analisa menunjukkan bahwa fraksi bensin dan kerosin yang dihasilkan pada temperatur hidrocracking 350°C, laju alir gas hidrogen 1,5 ml/det dan berat katalis 1,25 g mencapai hasil yang maksimum yaitu 20,486 persen untuk fraksi bensin dan 26,552 persen untuk fraksi kerosin. Kalor pembakaran produk hidrocracking tersebut nilainya terletak antara nilai kalor pembakaran bensin dan kerosin yaitu sebesar 48,6419 kJ/g.
Peningkatan Kualitas Batubara Terhadap Sub-Bituminus Dengan Metode Froth Flotation Muhammad Said; Zainal Fanani
Jurnal Penelitian Sains Vol 11, No 3 (2008)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8210.999 KB) | DOI: 10.56064/jps.v11i3.400

Abstract

Penelitian tentang kualitas batubara sub-bituminus dilakukan dengan menggunakan metode flotasi. Peningkatan kalor pembakaran batubara diperoleh dengan mengoptimalkan kadar karbon tertambat melalui penurunan kandungan air lembab, kadar abu dan zat terbang tereduksi. Penelitian ini bertujuan untuk menentukan kondisi optimum peningkatan kalor pembakaran batubara dengan variasi ukuran partikel dan variasi volume frother. Hasil penelitian menunjukkan ukuran partikel optimum 40 mesh dan volume trother optimum 5 mL. Kondisi optimum tersebut meningkatkan kadar karbon tertambat dimana persentase kenaikan 38,31%, dengan persentase penurunan kadar air lembab sebesar 93,18%, kadar abu dari sebesar 84,17% dan zat terbang sebesar 8,74%, sehingga kalor pembakaran batubara meningkat dari 26,19 kJ/g menjadi 29,13 kJ/g.
Degradasi Tanah Lahan Suboptimal oleh Bacillus mycoides Indigenous dan Kinetika Reaksinya Zainal Fanani; Bambang Yudhono; Veriana Romarito Situmorang
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 3 No. 1 (2014)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.399 KB) | DOI: 10.33230/JLSO.3.1.2014.112

Abstract

Research about degradation soil of suboptimal land from Lilin River PERTAMINA Musi Banyuasin Regency, South Sumatera have been done. The aim of this research is knowing the capability of Bacillus mycoides on degradation petroleum hydrocarbon. The measurement of first sludge TPH was 71.1567%. First TPH was become more liquid than before on 5; 7.5; 10; 12.5 and 15% with fresh soil, bulking agent and Bacillus mycoides was added 10% from medium total weight. Incubation for 14 days gives result decreasing TPH on each medium become 2.3679; 4.5123; 5.9070; 6.0223 and 8.0010% which is first order reaction. Medium 10% on incubation day 14th; 17th; 22nd; 26th and 31st. On continue, decreasing TPH is 5.9070; 4.5970; 4.0463; 3.7230 and 3.29% with constant rate reaction on 0.0361 /day. GC-MS result sample analysis shows that Bacillus mycoides have an ability to degradation C19H40; C21H44; C24H50 and C28H58 with percentage of concentrate decreasing from those compound is 99.32%.
Synthesis of Catalyst Cobalt Impregnated on Activated Natural Zeolite, Co/ANZ Tri Kurnia Dewi; Zainal Fanani
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 2, No 1 (2017): February 2017
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i1.01

Abstract

Research has been done on the synthesis of catalyst Co/Activated Natural Zeolite. The variables studied were the mass ratio of Cobalt to Zeolite and temperature of reduction during catalyst activation. The catalyst produced were analysed in their acidity and surface area. Acidity was presented in the form of ammonia and pyridine adsorption on the catalyst surface. The results showed the increasing Cobalt to Zeolite mass ratio will increase acidity of the catalyst produced. Reduction temperature during catalyst activation also gave same effect as Cobalt to Zeolite mass ratio did. Best ratio within the range of this study was Cobalt to Zeolite mass ratio of 6:20, which was found at reduction temperature of 400 C. This ratio gave catalyst acidity correspond to ammonia adsorption of 6.4615 mmol/g, and to pyridine adsorption of 2.6047 mmol/g catalyst. The best reduction temperature was 450 C at ratio of 6:20. The acidity of this catalyst was of 7.5202 mmol/g as in ammonia adsorption, and was of  3.662 mmol/g as in pyridine adsorption. Catalyst surface area of the best ratio was 32.63 m2/g, whilst catalyst surface area of the best reduction temperature was 38.95 m2/g. Keywords: catalyst, cobalt, activated natural Zeolite 
Preparation And Characterization Of Cr/Activated Carbon Catalyst From Palm Empty Fruit Bunch Zainal Fanani; Dedi Rohendi; Tri Kurnia Dewi; Muhammad Dzulfikar A
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 1, No 2 (2016): June 2016
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v1.i2.35

Abstract

Preparation and characterization of Cr/activated carbon catalyst from palm empty fruit bunch had been done. The research were to determine the effect of carbonization temperature towards adsorption of ammonia, iodine number, metilen blue number, and porosity of activated carbon and Cr/activated carbon catalyst. The determination of porosity include surface area, micropore volume and total pore volume. The results showed the best carbonization temperature activated carbon and Cr/activated carbon catalyst at 700°C. The adsorption ammonia of activated carbon and Cr/activated carbon catalyst as 6.379 mmol/g and 8.1624 mmol/g. The iodine number of activated carbon and Cr/activated carbon catalyst as 1520.16 mg/g and 1535.67 mg/g. The metilen blue number of activated carbon and Cr/activated carbon catalyst as 281.71 mg/g and 319.18 mg/g. The surface area of activated carbon and Cr/activated carbon catalyst as 1527.80 m2/g and 1652.58 m2/g. The micropore volume of activated carbon and Cr/activated carbon catalyst as 0.7460 cm3/g and 0.8670 cm3/g. The total pore volume of activated carbon and Cr/activated carbon catalyst as 0.8243 cm3/g and 0.8970 cm3/g.Keywords : activated carbon, palm empty fruit bunch, porosity, catalyst, chromium
Optimization of Bio-Oil Pyrolysis Product from Palm Empty Fruit Bunches over H-Zeolite Catalyst using Response Surface Methodology (RSM) Zainal Fanani; Addy Rachmat; Hasanudin hasanudin; Muhammad Said
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 3 (2021): October 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i3.122

Abstract

Bio-oil pyrolysis product considered as a promising resource of hydrocarbon compound that can be used as alternative fuel or other application. Palm empty fruit bunch (PEFB) based bio-oil converted into hydrocarbon trough pyrolysis over sulfate activation natural zeolite. Here, we reported an optimization process of bio-oil pyrolysis specifically on temperature and catalyst dose variables by using response surface methodology (RSM). Prior conversion process, PEFB was analyzed to determine cellulose, hemicellulose and lignin content. Sulfate activation natural zeolite confirmed its acidity by ammonia and pyridine adsorption calculated by gravimetric method. Two independent variables namely temperature and catalyst weight used in optimization process by RSM whereas response variable is conversion percentage. Analysis result on cellulose, hemicellulose and lignin content are 45.39%, 30.36% and 20.5% respectively. Catalyst acidity determination based on ammonia and pyridine adsorption gave 1.002 mmol/g and 0.1994 mmol/g. Optimum condition of hydrocracking achieved at 568 °C and 2.1088 g catalyst weight with the product obtained at 62.21% conversion. The best product density is 1.086 g/mL obtained at hydrocracking temperature 554 °C and 2.0362 g catalyst. Based on GC-MS analysis, it was confirmed that the product comprises more straight-chain hydrocarbon than cyclic one. RSM calculation able to formulate the feasible model equation to predict the conversion percentage. The equation is; percent conversion = 60.059 + 14.268T + 9.783W – 25.649T2 – 18.809W2 + 3.114TW, whereas model equation for response variable on product density; ρ= 1.09103 – 0.12356T – 0.09744W + 0.11489T2 + 0.28888W2 – 0.00740TW
Comparison of Cr/C and Cr2O3/Z Catalysts on Hydrocracking of Bio Oil from Pyrolysis of Palm Empty Fruit Bunches Zainal Fanani; Hasanuddin hasanuddin; Addy Rachmat; Muhammad Said
Molekul Vol 16, No 3 (2021)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.645 KB) | DOI: 10.20884/1.jm.2021.16.3.812

Abstract

Bio-oil derived from palm empty fruit bunch is not suitable for fuel purpose due to high acidity and low heating. Cr2O3/Zeolite and Cr/C catalysts was developed to upgrade bio-oil through hydrocracking. The catalyst prepared via impregnation method followed by oxidation-reduction. Ammonia and pyridine adsorption used to evaluate acidity as well as crystallinity assessment by using XRD. Hydrocracking reaction conducted in hydrogen gas flow rates 0.5-3.0 L/min, the surface area of Cr/C catalyst found out 1,497.07-1,652.58 m2/g, whilst the temperatures 450 to 700 ℃ and the catalyst weights between 0.5 to 2.5 g. Acidity calculated from ammonia and pyridine adsorption shows Cr2O3/Zeolite has higher value compare to pristine Zeolite. XRD pattern shows Cr2O3/Zeolite has high crystallinity as indicated by sharp and pointed diffraction peaks. The optimum condition of hydrocracking confirmed by lower density of liquid product. The variables obtained by a separate experiments shows that H2 gas flow rate best at 2.5 L/min, temperature of hydrocracking 500 ℃ for Cr2O3/Zeolite and 600oC for Cr/C whereas weight of Cr2O3/Zeolite catalyst is 1.5 g. The Cr/C catalyst that gave low density product possess 1,554.48 m2/g surface area. GCMS data shows increase on the number of straight chain compounds within the hydrocracking product.
BIODEGRADATION OF POLYBLEND POLYPROPILENE- PALM OIL-AMYLUM BY Bacillus subtilus AND Clostridium botulinum Zainal Fanani; Miksusanti Miksusanti; Desnelli Desnelli
Indonesian Journal of Chemistry Vol 3, No 3 (2003)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (118.067 KB) | DOI: 10.22146/ijc.21882

Abstract

It had been done a biodegradation polyblend from blending polypropilene-palm oil-amylum with three composition of polyblend i.e polyblend A 80% polypropilene- 19.5% palm oil- 0.5% amylum, poliblend B 80% polypropilene- 19% palm oil- 1% amylum and polyblend C 80% polypropilene-18% palm oil- 2% amylum by B. subtilus and C. botulinum, time incubation was twenty five days. The characterization of polyblend before and after biodegradation has done with FTIR, DTA, Viscometre and tensile strength of polyblend. The result showed that Bacillus subtilus and Clostridium botulinum can biodegradate polyblend and make holes as well as chink on polyblend especially polyblend C, because it has more carbohidrat than polyblend A and B. Analysis from FTIR showed compatible of poliblend because it did not have a new function group and did not change of wavelength. Data of tensile strength showed lower value after biodegradation at polyblend C and from DTA and Viscometre showed lower melting point and lower average molecule weight, respectively.