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Molekul: Jurnal Ilmiah Kimia
Published by Universitas Jenderal Soedirman
ISSN : 19079761     EISSN : 25030310     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
MOLEKUL is a peer-reviewed journal of chemistry published by the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Jenderal Soedirman University, Indonesia. Publishing frequency 2 issues per year, on May and November. This Journal encompasses all branches of chemistry and its sub-disciplines including Pharmaceutical, Biological activities of Synthetic Drugs, Environmental Chemistry, Biochemistry, Polymer Chemistry, Petroleum Chemistry, and Agricultural Chemistry.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 3, No 2 (2008)" : 8 Documents clear
APLIKASI 1H-NMR DALAM PENENTUAN KONVERSI METIL ESTER PADA PEMBUATAN BIODIESEL Dwi Kartika; Yoeswono Yoeswono
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5.417 KB) | DOI: 10.20884/1.jm.2008.3.2.50

Abstract

Determination of methyl ester conversion on biodiesel processing using 1H-NMR spectrometer has been done. Methoxy spectra from methyl ester would appear at 3,7 ppm (singlet), spectra at 4,2 ppm (doublet of doublet) was glyceridic proton. The spectrum could be used as reference to determine the degree of biodiesel conversion, because spectra at chemical shift 4.2 ppm was characteristic for triglyceride that methyl ester did not have it. Whereas, spectra at chemical shift 3.7 ppm was characteristic for methyl ester that triglyceride did not have it. The extent of both spectrum indicated for incompletness in biodiesel synthesis.
POTENSI HUMIN HASIL ISOLASI TANAH HUTAN DAMAR BATURRADEN DALAM MENURUNKAN KESADAHAN AIR Tien Setyaningtyas; Roy Andreas; Kapti Riyani
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.627 KB) | DOI: 10.20884/1.jm.2008.3.2.51

Abstract

The hardness water is not good for consumption because can resulted kidney disease One of the method which can be used to degrade rodamin B is adsorption use humin. Humin is biggest fraction of humat materials that insoluble in acid, alcohol and base. The ability of humin for adsorp Ca2+ and Mg2+ caused by the existence of OH phenolic and carboxylic functional group which can interacted with metal ion. The aim of this study is to recognize humin characteristic from the soil of Baturraden resin forest, and ability of humin from the soil of Baturraden resin forest for decreasing the hardness water.Humin was isolated from the Baturraden resin forest and purified use mixture of HCl:HF. Purified humin is characterised such as identify of functional group of humin, stipulating of water content, stipulating of dust content, obstetrical stipulating of total acidity content, carboxylic and OH phenolic functional group. Decreasing of hardness water was analysed with variation time 0, 10, 30, 60, 180, 300, 600, 900, 1200 dan 1440 minute.Humin that isolated from Baturraden resin forest have characteristic such as water content 16.6199 %; dust content 9.2050 %; total acidity content 475 cmol / Kg; carboxylic rate 200 cmol/Kg, and OH phenolic rate 275 cmol/Kg. Decreasing of hardness water in Darmakradenan, Ajibarang subdistrict, Banyumas regency was 54,745 % with equlibrium time at 600 minute (10 hours).
SPESIASI Cr(III) DAN Cr(VI) PADA LIMBAH CAIR INDUSTRI ELEKTROPLATING Dian Windy Dwiasi; Dwi Kartika
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.676 KB) | DOI: 10.20884/1.jm.2008.3.2.52

Abstract

Speciation of Cr(III) and Cr(VI) in wastewater have been widely investigated. The species of Cr(III) and Cr(VI) in wastewater samples were determined by UV – Vis Spectrometry and Atomic Absorption Spectrometry (AAS). The method described is based upon the spectrophotometric determination of the magenta chromagen (λmax = 545 nm) formed when 1,5-diphenylcarbazide reacts with hexavalent chromium in sulphuric acid solution. Hexavalent chromium are determined by a calibration curve technique. The result showed that Cr(VI) concentration are still on the government regulation (Menteri Negara Kependudukan dan Lingkungan Hidup No. 03/MENKLH/II/1991).
PEMANFAATAN KARBON SABUT KELAPA TERIMPREGNASI UNTUK MENGURANGI TEMBAGA(II) DALAM MEDIUM AIR Roy Andreas; Uyi Sulaeman; Tien Setyaningtyas
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (115.593 KB) | DOI: 10.20884/1.jm.2008.3.2.53

Abstract

This research is conducted to produce carbons from coconut fibre which approach to activated carbon clause continue with carbon surface modification and the adsorption examination to Cu(II) ions. The research consist of several phase. Carbon making of coconut fibre conducted by carbonization processes at 320-400oC with temperature interval 20oC. Carbon yielded in characterized moisture content, ash content and its adsoprtion to iodium. The carbon surface modification conducted by loaded 2-mercaptobenzotiazol (MBT) on carbon. The adsorpsibility of carbon-MBT tested by influence of contact time, pH, and the isoterm adsorption pattern. The result of the study showed carbonization of coconut fibre which approach the requirement of SII No.0258-89 gained at temperature 320oC. In the present study equilibrium time of 10 minute and pH was found to be optimum for both adsorbent. While type of isothermal adsorption from carban and carbon-MBT adsorbent followed the Langmuir adsorption pattern.
PEMANFAATAN BAKTERI HASIL ISOLASI DARI TPA (TEMPAT PEMBUANGAN AKHIR) GUNUNG TUGEL KABUPATEN BANYUMAS SEBAGAI AGEN BIODEGRADASI POLIMER POLIEUGENOL Puji Lestari; Zusfahair Zusfahair; Dian Riana Ningsih; Senny Widyaningsih
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.797 KB) | DOI: 10.20884/1.jm.2008.3.2.48

Abstract

A number of microbes are known to have ability to degrade synthetic polymers such as polyeugenol. This research was attempted to know the genus of bacterium that isolated from Gunung Tugel garbage dumping land which is able to degrade polyeugenol and to characterize polyeugenol before and after biodegradation process using this bacterium. Pure eugenol was polymerized into polyeugenol by adding concentrated sulphate acid, and then formed become a thin film. Bacterium which is isolated from Gunung Tugel garbage dumping land was suggested asAcinetobacter sp. Polyeugenol thin film was incubated with this bacterium with various incubation times 5, 10, 15, 20, 25, 30 and 60 days. Thin film then was characterized including melting point value, percentage of weight loss, molecular weight, and the function groups by FTIR. Melting point of initial polyeugenol was 135-137oC and after biodegradation was 98-100oC. Percentage average of loss weight was 0.5637% (b/v). Molecular weight of polyeugenol before degradation was 61.472.882,91 g/mole and after biodegradation was 5,542,915.464 g/mole. FTIR spectrum percentage of transmittance of polyeugenol after biodegradation was decreased.
PENURUNAN BOD DAN COD LIMBAH CAIR INDUSTRI TEKSTIL DI KABUPATEN PEKALONGAN DENGAN METODE MULTI SOIL LAYERING Irmanto Irmanto; Suyata Suyata
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.047 KB) | DOI: 10.20884/1.jm.2008.3.2.54

Abstract

Multi Soil Layering (MSL) system is a method of wastewater treatment that increase the soils function to purify wastewater. In the construction of MSL, soils mixed with the charcoal and then filled into the box of size 50x14x50 cm in layers structured like brick pattern. The aims of this research are to determine the concentration of BOD and COD on textile industrial wastewater before and after the process by MSL method. It also determines the optimal loading rate of wastewater on the MSL system, and then it can determine the efficiency of MSL system on reducing the concentration of BOD and COD on textile industrial wastewater. The method which used in this research is an experimental method. The wastewater on the MSL system is loaded on the loading rate variety: 160, 320, 480, 640, and 800 L m-2 day-1. The efficiency of MSL system to removing BOD and COD on textile industrial wastewater are determined on optimal loading rate. The research gave result that MSL method could remove BOD and COD on textile industrial wastewater on the optimal loading rate 320 L m-2 day-1. The efficiency of MSL system in removing BOD and COD on textile industrial wastewater are 96.52 and 80.87% respectively. This indicated that the method MSL serve the purpose of effective alternative method in processing of liquid waste textile industry.
UJI AKTIVITAS ANTIKANKER EKSTRAK ETANOL DAUN Rhizopora mucronata TERHADAP SEL MYELOMA Hartiwi Diastuti; Warsinah Warsinah; Purwati Purwati
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.491 KB) | DOI: 10.20884/1.jm.2008.3.2.49

Abstract

The mangrove plant have been long used the people for traditional medicine to cure various diseases, one of them to cancer therapy. Investigation the anticancer potent of R. mucronata has not been carried yet. This research was aimed to toxicity test of R. mucronta leaves extracts againts Artemia salina Leach, then cytotoxicity test of R. mucronata leave extracts againts Myeloma cancer cells. The extraction of R. mucronata leaves was peformed by maseration with ethanol. The ethanol extracts was partitioned with chloroform, ethylacetate and methanol. The ethanol extracts of R. mucronata leaves respectively was examined their toxicity againts A. salina Leach larv. The toxic exctracts was examined their citotoxicity againts Myeloma cells. The ethanol extract of R. mucronata leaves has toxic character because has LC50 < 1000 mg/mL. Citotoxicity test againts Myeloma cells showed that the chloroform fraction of ethanol extract of R. mucronata leaves have a high activity against Myeloma cell, LC50 value equal to 28,72 mg/mL. Phytochemical study showed that the active fractions contained terpenoid and alkaloid.
ANALISIS SENYAWA KIMIA DALAM EKSTRAK KLOROFOM BUNGA KAMBOJA (Plumeria alba) DENGAN GC-MS Santi Nur Handayani; Kapti Riyani
Molekul Vol 3, No 2 (2008)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (168.453 KB) | DOI: 10.20884/1.jm.2008.3.2.55

Abstract

lumeria alba is called frangipani is one of Apocynaceae family’s plant. Frangipani is potentially used as traditional medicine, for example as an antiinflamation drugs. It has not been yet done an extensive reasearch on the chemical compound content of frangipani. The reasearch was conducted to investigate some chemical constituents by using Gas Chromatography-Mass Spectrometer (GC-MS). Extraction of chemical compound of frangipani has been conducted by soxhletasi using n-hexane as solvent followed by chloroform and ethyl acetate. Then chloroform extract was identified by GC-MS. The result showed that extract of chloroform contained : palmitic acid, clionasterol, fucosterol, fagarasterol and methyl commate B respectively.

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