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NOOR HUBDRYAWATI
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Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 9 Documents
 1 
Search results for , issue "Vol 17 No 2 (2020)" : 9 Documents clear
PENGARUH KANDUNGAN ASAM LEMAK BEBAS (ALB) TERHADAP PERUBAHAN DENSITAS CRUDE PALM OIL (CPO) ALIYAH FAHMI
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.622

Abstract

Density are a physical parameter of Crude Palm Oil (CPO) quality determination which done by gravimetric method (weighing sample in a picnometer 50 mL, g/mL). Density is affected by the temperature. High temperature in CPO may cause the density become less by a little. But if we get them in lower temperature will make them in solid form and this situation is undesirable in trade industry. High temperature may cause hydrolysis reaction that add free fatty acid (FFA) content. The density changing was made with variation temperature (450C, 500C, 550C, 600C dan 650C) and FFA concentration (2%,3%,4%,5% and 6%). The result in this research was high concentration of FFA will make CPO density decreased with inreasing temperature. The linier relationship happened in same temperature (450C), the CPO density with free fatty acid content were 2%, 3%, 4%, 5% and 6% were ?= 0,8934; 0,8391; 0,8926; 0,8921 and 0,8920), so did the temperature at 500C, 550C, 600C dan 650C Keywords: Density, CPO, FFA, Temperature
Studi Perubahan Ukuran Pori Zeolit Y Berdasarkan Pengaruh Variasi Rasio Si/Al, Variasi Kation Dan Penambahan Molekul Organik Menggunakan Metode Mekanika Molekuler Dwi Junita Rahman; Rahmat Gunawan; Daniel Tarigan
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.420

Abstract

Pemodelan struktur zeolit Y telah diteliti dengan variasi rasio Si/Al, variasi kation dan penambahan molekul organik menggunakan metode mekanika molekuler. Pemodelan zeolit dilakukan dengan membuat kerangka struktur satu unit sel zeolit Y. Zeolit Y dengan energi optimasi terendah (Si/Al = 4,3) dipilih untuk studi pengaruh penambahan kation (Na+, K+, Ca2+, Mg2+) dan molekul organik (C4H9OH, C5H11OH, C6H5OH) pada diameter pori. Hasil penelitian menunjukkan struktur zeolit Y dengan impregnasi kation K+ dan molekul organik C4H9OH memiliki diameter pori terbesar yaitu 16,0303  dan 15,9126 .
MODIFIKASI ZEOLIT ALAM DENGAN TiO2 UNTUK DEGRADASI RHODAMIN B DARI LIMBAH SARUNG TENUN SECARA FOTOKATALISIS Limas Rahmita Gustina
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.813

Abstract

Telah dilakukan penelitian tentang pengaruh waktu kontak, variasi berat katalis TiO2-Zeolit, tanpa penggunaan lampu UV dan perbandingan material (Zeolit, TiO2 dan TiO2-Zeolit). Tahap awal meliputi preparasi zeolit alam, aktivasi dengan larutan HCl 3 N, modifikasi melalui proses impregnasi dan diaplikasikan secara fotokatalisis. TiO2-Zeolit dikarakterisasi dengan menggunakan FTIR, SEM-EDX dan XRD. Analisis FTIR menunjukkan bilangan gelombang dari zeolit dan TiO2 muncul pada material TiO2-Zeolit. SEM-EDX menunjukkan bentuk morfologi bentuk partikel-partikel bulat yang seragam dengan komposisi TiO2 38,15%. Pola XRD menunjukkan adanya TiO2 pada material TiO2-Zeolit. Berdasarkan data tersebut diperoleh waktu kontak optimum 30 menit dengan dengan berat katalis optimum sebesar 0,5 gram TiO2-Zeolit menghasilkan persen degradasi yang lebih tinggi dibandingkan menggunakan Zeolit dan TiO2 yakni masing-masing sebesar 98,73%; 51,00% dan 36,26%, sedangkan degradasi tanpa penggunaan lampu UV sebesar 84,84%.
PEMBUATAN SURFAKTAN BERBAHAN DASAR MINYAK BIJI MAHONI Swietenia macrophylla King DENGAN DIETANOLAMINA Catur Oktaviani; Daniel Daniel
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.692

Abstract

ABSTRACT This research was conducted to synthesize diethanolamide synthesis from methyl esters of mahogany seed oil (Swietenia macrophylla King) trough an oxidation reaction with variation in catalyst weight. The results showed that the 48,97% mahogany seed oil content of acid was 24,239 mg KOH/g. The mahogany seed oil was methyl ester through the reverse asterification method 0f 0,791 mg KOH/g, saponification is 88,373 mg KOH/g. The results of the GC-MS analysis of the dominant fatty acid are methyl linoleic by 36,02%. Methyl esters are reacted with diethanolamine through an amidation method using a variation of catalyst weight which is 0,5%, 1% and 1,5% with yield percentages of 71,197%, 79,638% and 82,035%. The optimum condition of diethanolamide synthesis is the catalyst weight variation of 1.5% which can reduce water surface tension by 45,159%. The FT-IR spectrum data shows that the absorption peak which is specific to the amide group is found at wave number 1620cm-1 so it can be concluded that the compound is diethanolamide. Keyword : Mahogany seed oil, esterification amidation, diethanolamide. ABSTRAK Penelitian ini dilakukan untuk mensintesis dietanolamida dari metil ester minyak biji mahoni (Swietenia machrophylla King) melalui reaksi amidasi dengan variasi berat katalis. Hasil penelitian menunjukkan kandungan minyak biji mahoni 48,97% bilangan asam sebesar 24,239 mg KOH/g minyak biji mahoni tersebut dikonversi menjadi metil ester melalui metode esterifikasi menurunkan bilangan asam sebesar 0,791 mg KOH/g, bilangan penyabunan adalah 88,373 mg KOH/g. Hasil dari analisa GC-MS asam lemak yang dominan yaitu metil linoleat sebesar 36,02%. Metil ester direaksikan dengan dietanolamina melalui metode amidasi dengan menggunakan variasi berat katalis yaitu 0,5%, 1% dan 1,5% dengan persen rendemen sebesar 71,197%, 79,638% and 82,035%. Kondisi optimum dari sintesis dietanolamida yaitu pada variasi berat katalis 1,5% yang dapat menurunkan tegangan permukaan air sebesar 45,159%. Hasil data spektrum FT-IR menunjukkan puncak serapan yang spesifik untuk gugus amida terdapat pada bilangan gelombang 1620 cm-1 sehingga dapat disimpulkan bahwa senyawa tersebut adalah dietanolamida. Kata Kunci : Minyak biji mahoni, esterifikasi, amidasi, dietanolamida
PENENTUAN KUALITAS AIR SUMUR BOR DI DAERAH MARANGKAYU KABUPATEN KUTAI KARTANEGARA Yessy Parasamya Anggraini; Marlon Ivanhoe Aipassa; Aman S. Panggabean
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.912

Abstract

The research about determination of the quality of drilled water wells in the area of Marangkayu, Kutai Kertanegara district has been conducted. The quality of the wellbore produced can be done by determining the number of several important parameters of the wellbore’s groundwater quality of groundwater wells produced by the Director General of SDA Ministry of PUPR and community groundwater wells in the coastal area of Marangkayu, whether it meets the requirements of the Republic of Indonesia Minister of Health Regulation No. 32/2017 concerning Environmental Health Standard Quality Standards and Water Health Requirements for Sanitation Hygiene. The results of the research showed that the government drilled water and community well drilled water met the quality standards in accordance with the Republic of Indonesia Ministerial Regulation No. 32/2017, except for E. Coli and Total Coliform contents are quite high, exceeding the quality standards of water sample inspection results.
UJI ANTIBAKTERI Ag/SBA-15 DARI ABU DAUN BAMBU PETUNG TERHADAP BAKTERI Escherichia coli Nurdahniyati Nurdahniyati; Nunung Handayani; Dirgarini Julia Nurlianti Subagyono; Eko Kusumawati
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Antibacterial tests of Ag/SBA-15 from petung bamboo leaf ash against Escherichia coli were carried out. Modification of SBA-15 with Ag was conducted using the wet impregnation method while the antibacterial test was carried out by well diffusion method and disc diffusion method with various concentrations of Ag/SBA-15. The Ag/SBA-15 has a surface area of ​​143 m2/g, pore diameter of 8.4 nm and pore volume of 0.35 cm3/g. The SAXS pattern of Ag /SBA-15 showed 3 typical SBA-15 peaks in the 0o -2o 2θ range with the miller index [100], [110] and [200], indicating modification with Ag did not change the hexagonal structure of SBA-15. Ag / SBA-15 material has the potential as an antibacterial agent for Escherichia coli; the inhibitory zone diameters for the well diffusion method and disc diffusion method were 7.00 ± 0.57 mm and 13.16 ± 0.16 mm, respectively. Increasing the concentration of Ag/SBA-15 samples resulted in greater inhibitory zone diameters for the bacteria.
SINTESIS SURFAKTAN DIETANOLAMIDA DARI METIL ESTER MINYAK BIJI BUNGA MATAHARI (Helianthus annuus. L) MELALUI REAKSI AMIDASI Nur Khasanah; Daniel Daniel; Eva Marliana
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.708

Abstract

Synthesis of dietanolamide surfactant from methyl ester of sunflower seed oil (Helianthus annuus. L) has been carried out through an amidation reaction. In the extraction process showed the oil content of sunflower seeds was 32.93% with an acid number of 3.25 mg KOH/g and ALB levels of 1.63%. Sunflower seed oil was then converted to methyl ester through the esterification process and obtained an acid number 1.84 mg KOH/g so that the ALB level dropped to 0.92% and obtained saponification numbers of 61.19 mg KOH/g. The most dominant composition of methyl ester of sunflower seed oil based on GC-MS analysis was methyl oleate at 23.28%. The FT-IR methyl ester spectrum gives a specific absorption peak for group C=O ester at wave number 1743 cm-1. Methyl esters are converted to diethanolamide through an amidation process. The resulting diethanolamide has an acid number of 9.7 mg KOH/g and a saponification number of 3.08 mg KOH/g. The FT-IR spectrum provides specific absorption peaks for groups C=O amides at wave numbers 1622 cm-1. The value of HLB dietanolamide in practice is 13.6495 and in theory is 14.291 which includes the surfactant in the oil in water (O/W) emulsifying class. Keyword : sunflower seed oil, esterification, amidation, dietanolamide
ANALISIS RHODAMIN B PADA SAUS TOMAT YANG BEREDAR DI SAMARINDA MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Diah Kusumaningsih; Alimuddin Alimuddin; Erwin Akkas
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.458

Abstract

Abstract Analysis of rhodamine B in tomato sauce which is distributed in Samarinda city have been done. The identification are used chromatography paper and spectrophotometer UV-Vis in wavelength of 553nm. The result of research are showed in 5 of 20 samples that identified are positive of rhodamin B, which is tomato sauce in spring rools are 2.865 mg/L, tomato sauce in sausage are 2.033 mg/L, tomato sauce in meatball snacks are 2.008 mg/L, tomato sauce in cireng snacks are 1.058 mg/L, and the tomato sauce in tofu snacks 1.756 mg/L. Keywords: Rhodamine B, Chromatography Paper, Spectrophotometer UV-Vis
STUDI KOMPUTASI SEMIBUCKMINSTERFULLERENE SEBAGAI PENYIMPAN HIDROGEN MENGGUNAKAN METODE PERHITUNGAN DENSITY FUNCTIONAL THEORY. Digva Willyan; Rahmat Gunawan; Veliyana Londong Allo
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.716

Abstract

Hydrogen is an alternative energy source for fossil fuels. One of molecules that have an ability to store hydrogen is Semibuckminsterfullerene. This study was conducted to find out the optimum distance in adding hydrogen and the phenomenon of energy produced when adding hydrogen from 10 molecules to 100 molecules. Semibuckminsterfullerene was calculated using Density Functional Theory method, B3LYP with a basis set of 6-31G*. The optimum distance of Semibuckminsterfullerene with hydrogen was 3 ? Furthermore, the results of adding hydrogen from 10 to 100 molecules showed a decrease in energy due to the bowl-shaped structure of Semibuckminsterfullerene

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