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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) International Journal of Biosciences and Biotechnology Jurnal Veteriner Jurnal Energi Dan Manufaktur Jurnal Pendidikan Fisika Indonesia The Journal of Pure and Applied Chemistry Research BULETIN FISIKA Jurnal Kimia Mulawarman Journal of Science and Applicative Technology ALCHEMY Jurnal Penelitian Kimia Nata Palemahan: Journal of Environmental Engineering Innovations

Manuntun Manurung

Program Studi Kimia, Fakultas MIPA Universitas Udayana, Bali-Indonesia

Author-ID : 314670

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Veterinary

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PREPARASI ARANG BAMBU DENGAN METODE KONVENSIONAL, AKTIVASI TERMAL DAN KARAKTERISASI SERTA APLIKASINYA SEBAGAI ADSORBEN LOGAM Pb(II) DAN Cr(III) M. Manurung; A. A. B. Putra; I. Oktavia
Jurnal Kimia (Journal of Chemistry) Vol. 15, No.1, Januari 2021
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2021.v15.i01.p08

Arang aktif merupakan adsorben multifungsi, dapat menyerap spesi yang bermuatan positif seperti ion logam, molekul netral seperti I2 dan bermuatan negatif. Tujuan penelitian adalah membuat arang aktif dari limbah bambu yang berguna meminimalisir kandungan logam timbal (II) dan krom (III) dari perairan. Pembuatan arang dilakukan secara konvensional menggunakan tong kedap udara dengan pemanasan selama 12 jam. Aktivasi arang dilakukan menggunakan tanur pada suhu 650oC selama 4 jam. Hasil penelitian menunjukkan bahwa aktivasi termal menghasilkan arang aktif lebih baik dibandingkan tanpa aktivasi. Arang yang diaktivasi dan tanpa aktivasi memenuhi SNI 06-3730-1995 tentang arang aktif teknis. Luas permukaan sebesar 494,8178 m2/g, keasaman permukaan sebesar 4,4426 mmol/g, dan kebasaan permukaan sebesar 3,4467 mmol/g. Kondisi optimum adsorpsi terhadap ion logam yaitu waktu kontak 24 jam dan pH 8 untuk Pb(II) dan pH 6 untuk Cr(III). Kapasitas adsorpsi arang aktif sebesar 3,9800 mg/g untuk ion Pb(II) dan 3,9766 mg/g untuk ion Cr(III).

AKUMULASI LOGAM KROMIUM (Cr) DALAM SEDIMEN, AKAR DAN DAUN MANGROVE Avicennia marina DI MUARA SUNGAI BADUNG A. A. Sg. Istri A. Suwandewi; Iryanti Eka Suprihatin; Manuntun Manurung
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Research on Cr metal content in the sediment, roots and leaves of the Avicennia marina in estuary of Badung river has been conducted. This study was aimed to determine the ability of Avicennia marina in accumulating chromium from the ecosystem where the plant grows. The concentrations of Chromium were determined by the use of Atomic Absorption Spektrcophotometer followed by a calibration standard method. The results showed that the roots of the Avicennia marina accumulated Cr metal most. Total concentrations of Cr metal in leaves was 0,9579 mg/kg and in the roots was 1,9680 mg/kg, while in the sediment 0,4536 mg/kg. Based on the amount of metal accumulation in the roots and leaves of mangrove, it can be suggested that the Avicennia marina was capable of accumulating Cr present in the ecosystem.

POTENSI KHITIN/ KHITOSAN DARI KULIT UDANG SEBAGAI BIOKOAGULAN PENJERNIH AIR Manuntun Manurung
Jurnal Kimia (Journal of Chemistry) Vol. 5, No. 2 Juli 2011
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (111.703 KB)

The potency of chitin/chitosan isolated from shrimp waste as coagulant to reduce turbidity of water have been studied in this research. The chitin/chitosan was isolated through some processes including deproteination, demineralization and deacetylation.The chitin/chitosan obtained was characterized using FTIR and the degree of deacetylation was calculated based on FTIR spectra. The deacetylation degree was found 64.86%, which mean the chitin mixed with chitosan or crude chitosan. In which using concentration 0.5% alumina can only reduce the turbidity of water by 54.21% while chitin/chitosan can reduce up to 90.37% the turbidity of water.

KANDUNGAN ALUMINIUM DALAM KALENG BEKAS DAN PEMANFAATANNYA DALAM PEMBUATAN TAWAS Manuntun Manurung; Irma Fitria Ayuningtyas
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 2 Juli 2010
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.419 KB)

This research was performed to analyze the aluminium content in several wasted cans. The analysis usedAAS at 309.3 nm. This method was chosen since its operation is relatively simple but capable of analyzing low metalcontents (less than 1 ppm). The aluminium content of wasted cans ranges from 1.41% up to 16.04%. The aluminiumwas used to make alum, with the percentage of yield of 77.04% up to 96.81%, depending on the type or cans. Inother words, one gram of wasted cans produced 0.2335 grams up to 2.6857 grams of alum. The produced alum wascapable of purifying water.

UJI SIFAT VIRGIN COCONUT OIL (VCO) HASIL EKSTRAKSI ENZIMATIS TERHADAP BERBAGAI PRODUK MINYAK KELAPA HASIL PUBLIKASI Ni M. Suaniti; Manuntun Manurung; Nadya Hartasiwi
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 2 Juli 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A complete mixture of waste unripe peels and leaves derived from papaya (Carica papaya) can be used to obtain enzymatic VCO. Enzymatic VCO has been generated and investigated by several detailed determination. Chemical and physical properties characterization of VCO in this process obtained density then viscosity at temperature 40?C achieved value 909,3 kg/m3 and 26,2094 mm2/s (40?C), whereas physical appearance seen as greenish yellow color, natural fresh coconut scent, free from rancid odor and taste. Iodine value, saponification value, ester value, and % FFA about 5,1601 g Iodine/100 g oil; 271,0596 mg-KOH/g oil; 271,2286 mg-KOH/g oil; 0,1725 %. Degree of VCO purity analyzed by use of TLC separation each for eluent 1 or 2 derived around 0,67 and 0,71, in other experiment standard Rf value for methyl laurate attained 0,74.

PEMBUATAN DAN KARAKTERISASI ARANG AKTIF DARI BAMBU APUS (Gigantochloa apus) DENGAN AKTIVATOR H3PO4 M. Manurung; E. Sahara; P. S. Sihombing
Jurnal Kimia (Journal of Chemistry) Vol.13 No.1 Januari 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This paper discusses the manufacture and characterization of activated carbon from bamboo apus (Gigantochloa apus) with H3PO4 activator. The aims of study were to determine the optimum carbonization temperture and time as well as the amount of phosphoric acid required as the chemical activator. In addition, the activated carbon was also characterized following the Indonesian National Standard (SNI-1995) for activated carbon. Tthe activated carbon functional groups was determined using FTIR spectroscopy. The result showed that the optimum temperature of carbonization was 600oC, the carbonization time was 90 minutes and the phosphoric acid required was 20 gram for 1 gram carbon. Under these conditions, the activated carbon resulted met SNI-1995 with the characteristics as follows: the water content was (1.11±0.83%), the level of volatile substances was (8.13± 0.27%), the total ash amount was (7.33±1.35%), the carbon contents was (83.40±0.27%). and the absorption capacities of iodine and methylen blue were of 1057.75 mg/g, 472.88 mg/g, respectively. FTIR identification indicated the existence of some functional groups, namely aromatik, ketone, and hydroxyl.

THE QUALITY OF COCONUT OIL PREPARED USING HEATING TECHNIQUE WITH ADDITION OF CARROT POWDER (Daucus carrota L) AS NATURAL ANTIOXIDANT N. M. Suaniti; M. Manurung; O. Ratnayani; A. A. I. S. J. Dewi
Jurnal Kimia (Journal of Chemistry) Vol.13 No.1 Januari 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Spoilage of coconut oil is indicated by rancidity caused by the oxidation and hydrolysis reactions. One of the efforts that can be carried out to inhibit the rancidity is by adding a natural antioxidant, such as carrot (Daucus carrota L) powder, into the coconut oil. This research aimed to find out the effect of the addition of carrot powder into the coconut oil on some parameters namely iodine number, peroxide number, FFA level, acid value and water content. The coconut oil was prepared by heating technique followed by the addition of carrot powder in the ratio of coconut oil:carrot of 100:1, 100:2, 100:3, 100:4, 100:5, and coconut oil:BHT (Butyl Hydroxy Toluene) of 100:1 as the positive control. The results were then compared to the Indonesian National Standard of SNI 01-2902-1992. It was found that the coconut oil added with carrot powder in the ratio of 100:4 showed the best quality with iodine number of 8.4092 ± 0.5761g iodine/100g, peroxide number of 3.2363 ± 1.9168mg O2/100g, Free Fatty Acid level (FFA) of 0.1676 ± 0.0037 %, acid value of 0.4656 ± 0.0119mg KOH/g and water content of 0.1038 ± 0.0068 %. The characterization using FTIR (Fourier-transform infrared spectroscopy) of such quality of coconut oil indicated some functional groups of OH, CH, CH3, C=O, CºC aliphatic and C=C aliphatic were contained.

UJI AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOID PADA KULIT BATANG TUMBUHAN GAYAM (Inocarpus fagiferus Fosb.) Made Hany Anastasia; Sri Rahayu Santi; Manuntun Manurung
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 1 Januari 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Gayam (Inocarpus fagiferus Fosb) is a tropical plant whose stem bark has been used as traditional medicine. This research aims to identify the flavonoides isolate from stem bark of gayam and identify the class of flavonoids compound as antioxidant. Extraction of 1000 g stem bark powder with 8500 mL of 96 % ethanol to yield 30 g concentrated ethanol extract. Partition of 15 g extract ethanol-water (7:3) with chloroform and n-buthanol to yield 1,5 g concentrated chloroform extract, 5,87 g concentrated n-buthanol extract and 5,63 g concentrated water extract. The flavonoids test using Wilstatter and Bate-Smith Matcalf reagent showed that n-buthanol and water extract contain flavonoids compounds. Antioxidant activity of flavonoids tested with DPPH method and lipid peroxide ammonium thiocyanate method showed that n-buthanol extract had antioxidant activity with IC50 of 24 ppm and n-buthanol extract has ability to inhibit the formation of lipid peroxide with inhibition value of 63,04 %. Separation of n-buthanol extract using thin layer chromatography preparative with chloroform as mobile phase and silica gel GF254 as stationary phase obtained four fractions. Flavonoids test showed that fraction F3 contained flavonoids compounds. FTIR analysis indicated that isolate had functional groups such as -OH , C=O, C-O alcohol, C=C aromatic, C-H aromatic and C-H aliphatic. UV-vis spectra showed 2 peaks at ? 310 nm and 261 nm which indicated flavonoids group of isolfavone with hydroxyl groups at C-5 and C-7. Antioxidant activity test with DPPH method showed that the isolate had antioxidant activity with IC50 of 1 ppm.

LOGAM KROMIUM (Cr) dan SENG (Zn) DALAM AKAR, BATANG, DAN DAUN TUMBUHAN MANGROVE Rhizophora apiculata DI MUARA SUNGAI BADUNG Iryanti Eka Suprihatin; Manuntun Manurung; Devi Mayangsari
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 2 Juli 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Cr and Zn contents in the roots, trunks and leaves of the Rhizophora apiculata in estuary of Badung river have been investigated. This study was aimed to determine the ability of Rhizophora apiculata in accumulating heavy metals from the ecosystem. The concentrations of Cr and Zn in the water, sediments, roots, trunks and leaves were determined by the use of Atomic Absorption Spectrophotometer. The results showed that the highest concentrations of both Cr and Zn were found in leaves of the Rhizophora apiculata. Total Cr dan Zn concentrations in the roots were 2,49±0.19 and 19,4 ± 0,06 mg/kg respectively and in the trunks were 3,26 ± 0,28 and 4,14±0,32 mg/kg respectively, while in the leaves were 4,45 ±0,07 and 38,72 ±0,03 mg/kg respectively. The water and sediment contents of the metals were reported separately, and they were much lower than those in the plant samples. Upon comparing these values, it can be suggested that the Rhizophora apiculata was capable of accumulating heavy metals present in its environment.

ANALISIS LOGAM SENG (Zn), BESI (Fe) DAN TEMBAGA (Cu) PADA SUSU FORMULA DENGAN METODE DESTRUKSI KERING DAN BASAH SECARA SPEKTROFOTOMETRI SERAPAN ATOM Manuntun Manurung; Ni Made Suaniti; Wira Adi Capayanti
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 2 Juli 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Analisis kandungan logam Zn, Fe, dan Cu dalam susu formula dengan metode destruksi kering dan basah telah dilakukan. Konsentrasi logam dalam susu ditentukan dengan metode spektrofotometri serapan atom menggunakan kurva kalibrasi. Persentase perolehan kembali dari metode kurva kalibrasi terhadap ketiga logam menunjukkan hasil yang baik, masing-masing 95,13% untuk Zn; 100,83% untuk Fe dan 99,39% untuk Cu. Konsentrasi logam Zn, Fe, dan Cu dalam susu formula A, B, dan C dengan metode destruksi kering dan basah berturut-turut; sampel A yaitu 79,14 mg/kg; 78,37 mg/kg; 3,40 mg/kg dan 80,98 mg/kg; 78,83 mg/kg; 1,92 mg/kg, sampel B yaitu 58,65 mg/kg; 94,01 mg/kg; 3,87 mg/kg dan 57,73 mg/kg; 89,09 mg/kg; 2,77 mg/kg, serta sampel C yaitu 45,41 mg/kg; 76,16 mg/kg; 2,96 mg/kg dan 38,62 mg/kg; 60,53 mg/kg; 2,92 mg/kg. Kandungan ketiga logam dalam susu formula tersebut masih pada rentang standar kesehatan makanan.

Co-Authors A. A. B. Putra A. A. I. S. J. Dewi A. A. Sg. Istri A. Suwandewi Agung Ari Chandra Wibawa Anak Agung Istri Agung Mayun Laksmiwati Anisha Maulinasari Arisma Damayanti D.N. Sinaga Devi Mayangsari Dina Lindawati Purba Emmy Sahara Fikriatun Nurhikmawati H. S. Suyanto Hery Suyanto I Gusti Ayu Putu Yunita Riyastini I Gusti Putu Agus Ferry S.P. I M. Siaka I Made Dira Swantara I Wayan Bandem Adnyana I Wayan Sugiri Adiyasa I. A. Gede Widihati I. A. R. Astiti Asih I. Oktavia I.A.G. Yunilawati Ida Ayu Gede Widihati Irdawati -, Irdawati Irdawati Irdawati Irdhawati Irdhawati Irma Fitria Ayuningtyas Iryanti Eka Suprihatin James Sibarani Kadek Adi Septiawan Kadek Adi Septiawan, Kadek Adi Kadek Dewi Wirmandiyanthi Ketut Gede Dharma Putra Made Hany Anastasia Mariance Thomas Marsela Luruk Bere N. K. Ermin N. P. A. J. S. Putri N. P. N Repli Suandewi2 Nadya Hartasiwi Ni Ayu Putu Tejawati Ni G. A. M. Dwi Adhi Suastuti Ni Luh Putu Widiantini Ni Made Meryana Utari Ni Made Puspawati Ni Made Suaniti Ni Made Yunarsih Ni Putu Ayu Krismayanti Ni Putu Widya Astuti O. Ratnayani Oka Ratnayani Oscar Yonathan Hambiyono P. S. Sihombing Raisyah Anjani Rizgyandhaka Artha Prawira Rizgyandhaka Artha Prawira Sinaga Natalia Declarossy Sri Rahayu Santi Tri Madesa Patadungan Turmuzi Tammi Widihati Widihati Wira Adi Capayanti Y. Setyo Yenni Ciawi Yunilawati Yunilawati

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