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Muhammad Nur Alam
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Program Studi Kimia, Fakultas Sains Universitas Cokroaminoto Palopo Kampus 2, Jl. Lamaranginang Kota Palopo Sulawesi Selatan
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Cokroaminoto Journal of Chemical Science
Published by Universitas Cokroaminoto Palopo
ISSN : -     EISSN : 2723438X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Materials Science & Nanotechnology
The journal publishes two continuous issues annually, which means every accepted article in February - July will be published in Issue No. 1, and every accepted articles in August - Januar will be published in Issue No. 2. scope is organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, theoretical chemistry and applied chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 37 Documents
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PENERAPAN ALAT SEDERHANA DALAM KONVERSI LIMBAH PLASTIK JENIS POLYPROPYLENE (PP) dan POLYETHYLENE TEREPHTHALATE (PET) MENJADI BAHAN BAKAR MINYAK Idawati Supu; Ni Nyoman Fitriani; Sardayanti Sulmi; Yulchen
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Abstrak Limbah plastik jenis PolyPropylene (PP) dan Polyethylene Terephthalate (PET) merupakan jenis polimer yang paling banyak dijumpai daalam bentuk limbah yang terbuang ke lingkungan. Tujuan dari penelitian ini adalah merancang alat sederhana dalam destilasi limbah plastik menjadi bahan bakar minyak, serta menentukan pH setiap bahan bakar yang dihasilkan. Metode yang digunakan adalah ekperimen dalam merangkai alat konversi sederhana menggunakan prinsip destilasi. Berdasarkan perbedaan massa limbah awal diperoleh Berdasarkan metode tersebut, dihasilkan perbandingan antara massa awal dan massa bahan bakan yang dihasilkan untuk masing-masing jenis limbah PP dan PET adalah 1:2 dan 1:1 dengan kisaran pH 4-5. Selain itu , terdapat perbedaan warna pada minyak yang dihasilkan dari dua tipe ini yakni warna kuning muda dan warna kuning gelap. Sistem kontrol suhu merupakan hal yang utama sepanjang berlangsungnya semua rangkaian proses pada metode penyulingan ini. Dari hasil tersebut menunjukkan bahwa limbah plastik dapat didaur ulang menjadi sesuatu yang bernilai tinggi sehingga minyak tersebut memiliki prospek yang baik untuk dijadikan solar atau bensin. Kata Kunci: Bahan Bakar Minyak, Destilasi, Limbah, Polyprophylene, Polyethylene Terephthlate. Abstract The Polypropylene (PP) and Polyethylene Terephthalate (PET) plastic wastes are the most common types of polymers are found as a waste which thrown into the environment. The purpose of this research is to design of instrumentation conversion simple by distillation theory in converting of plastic waste into fuel oil, and to determine the pH of each fuel that produced. The method used is an experiment in assembling a simple conversion device using the principle of distillation. Based on the difference in initial waste mass obtained. Based on this method, the resulting comparison between the initial mass and the produced mass from the type PP and PET waste are respectively 1:2 and 1:1 with a pH range of 4-5. Then, there is colour difference between this type namely light yellow and dark yellow. The controlling temperature is very important as long as all process on progress by distillation method. These results indicate that plastic waste can be recycled into something of high value so that the oil has good prospects to be used as diesel or gasoline.
ANALISIS KADAR SENYAWA FLAVONOID EKSTRAK ETANOL BUAH DENGEN (Dillenia serrata) MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Ilmiati Illing; Sukarti; Rini Rusman
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Dengen fruit is one of the endemic fruit from South Sulawesi which is often found in the forest or in the yard of residents' houses. Dengen fruit contains flavonoid compounds that have the potential as medicine. Flavonoid compounds are known to have pharmacological activities such as antioxidant, anti-inflammatory, antibacterial, anticancer, antidiabetic, antihypertensive, etc. This study aims to determine the levels of flavonoid compounds from Dengen fruit extract using UV-Vis spectrophotometer method. The method in this study used fresh fruit extract without a thickening process using a rotary evaporator, then tested the levels of flavonoids using a UV-Vis spectrophotometer. The results of the research that have been carried out have obtained the flavonoid content of the Dengen fruit extract, which is 10.23 mg/mL or equivalent to 1.023%.
IDENTIFIKASI SENYAWA METABOLIT SEKUNDER EKSTRAK ETANOL DAUN PECUT KUDA (Stachytarpheta jamaicensis L) MENGGUNAKAN GC-MS Ilmiati Illing; Sukarti; Firka Rustam
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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This study aims to determine the types of secondary metabolites contained in the ethanol extract of the leaves of Pecut Kuda (Stachytarpetha jamaicensis L) using GC-MS. This research was started by maceration on samples in the form of simplicia powder for 3x24 hours using 96% ethanol as solvent to remove the active compound content in Pecut Kuda leaves. The next step is to identify secondary metabolites using GC-MS. The results of the identification of secondary metabolites in GC-MS showed that the active compounds in the ethanol extract of Pecut Kuda leaves were Linolenic acid, Neophytadiene, Butyl 9,12,15-octadecatrionoate, Hexadecanoic acid, Cyclopenta (c) pyran-4-carboxylic acid. , and Camphene. These active compounds have functions as antioxidants, anti-inflammatory, antimicrobial, antibiotic and free radical scavengers in wound healing
ANALISIS KADAR Hg DAN Cd PADA KIJING AIR TAWAR (Pilsbryconcha exilis) DI SUNGAI DESA LAMASI PANTAI KABUPATEN LUWU Miftahul Jannah; Nurmalasari; Ridha Yulyani Wardi
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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Abstract

This study aims to determine the heavy metal content of mercury (Hg) and cadmium (Cd) in the freshwater mussel (Pilsbryoconcha exilis) in the Lamasi Pantai village, Luwu district. This type of research is descriptive research. The instrument used in this research is ICP-MS. The results of the analysis showed the levels of heavy metal Cadmium (Cd) in fresh water mussel (Pilsbryconcha exilis) at the sample station I 0.04 ppm, station II 0.03 ppm, station III 0.06 ppm. The levels of heavy metal Mercury (Hg) at stations I, II, and III were <0.0005 ppm respectively. These results indicate the content of heavy metals contained does not exceed the SNI quality standard of 1.0 ppm.
ANALISIS CEMARAN LOGAM BERAT KADMIUM (Cd) PADA KERANG BULU (Anadara inflate) di PERAIRAN TELUK AMBON Rachmin Munadi; Asih Setiatin Lesilawang
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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Abstract

The analysis has been carried out to determine the content of heavy metals cadmium (Cd) which contained on feather shells (Anadara inflate) at the Ambon bay waters. The samples of shells were weighed as much as 5 grams, charred and ingnited in a furnace at 500oC for 2 hours, then added 5 Ml of concentrated nitric acid and left for 24 hours. Put it in 50 mL volumetric flask with distilled water to the mark and filter it until a clear filtrateis abtained. Determination of the levels of Cr and Cd using an atomic absorption of spectorophotometer at the respective wavelengths of 283,2 nm and 228,9 nm, for Cr and Cd. The analysis o the results obtained Cd metel analysis results was 046 ppm. Based on the research results, it was found that in the three samples of shells from the waters of Ambon Bay, Cd metel had exceeded the threshold value (NAB) that had been set. The level of Cr metal contained in each shells originating from the waters of Ambon Bay has exceeded the threshold value (NAB) based on the decree of the State Minister for the Environmet (KMLH) IN 2004, for marine biota, namely 0,001 ppm.
DEGRADASI PEWARNA TARTRAZIN DENGAN FOTOKATALIS TITANIUM DIOKSIDA (TiO2) Anwar Said
Cokroaminoto Journal of Chemical Science Vol. 3 No. 1
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Tartrazin merupakan jenis pewarna sintetik yang banyak digunakan dalam industri makanan, kosmetik, dan obat-obatan yang apabila jatuh pada badan air dapat mencemarinya sehingga diperlukan senyawa yang dapat mendegradasinya salah satunya dengan menggunakan titanium dioksida (TiO2). Selanjutnya dalam mempelajari mekanisme reaksi dan perubahan yang terjadi selama proses degradasi fotokatalis titanium dioksida diperlukan informasi mengenai tetapan laju, waktu paruh dan laju degradasi yang merupakan faktor penentu dalam mempelajari mekanisme reaksi degradasi tersebut. Penelitian ini bertujuan untuk menentukan massa optimum TiO2 pada saat mendegradasi pewarna Tartrazin, menentukan tetapan laju degradasi tartrazin, menentukan waktu paru degradasi Tartrazin, dan menentukan laju degradasi tartrazin. Adapun prosedur penelitiannya yaitu desain reaktor fotokatalitik, penentuan panjang gelombang maksimum, pembuatan kurva kalibrasi tartrazin, penentuan massa optimum TiO2 dalam mendegradasi senyawa tartrazin, dan penentuan hasil degradasi senyawa tartrazin dengan penyinaran lampu UV. Hasil penelitian ini memperlihatkan bahwa massa optimum TiO2 dalam mendegradasi senyawa tartrazin adalah 50 mg, tetapan laju degradasi adalah 0,006 menit-1, waktu paruh degradasi adalah 115,5 menit dan laju degradasinya mengikuti persamaan reaksi orde pertama dimana laju maksimal terjadi pada menit ke-90 dengan nilai 0,0651 mg/L.
ANALISIS CEMARAN LOGAM BERAT Pb DAN Cd PADA RUMPUT LAUT Eucheumacottonii DI DAERAH PERAIRAN KABUPATEN KOLAKA UTARA Rachmin Munadi
Cokroaminoto Journal of Chemical Science Vol. 4 No. 1 (2022)
Publisher : Universitas Cokroaminoto Palopo

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Research has been carried out by the analysis of heavy metal contamination of Pb and Cd on Eucheuma cottonii seaweed in the waters of North Kolaka Regency. This study aims to determine the levels of heavy metals Pb and Cd by using atomic absorption spectrophotometry. Eucheuma cottonii seaweed samples were taken form three locations in the waters in the North Kolaka Regensy, namely samplen 1 in Kamisi village, sample 2 in Lawadia village, and samplie 3 in Watumea village. Samples were treated by washing with running water, cut it into small piaces, weighed as 4 grams, authored with an electric stove, baked in a furnace for 2 hours at a temperature of 500oC, seaweed ash cooled, after which 5 ml of concentrated HNO3 was added, added distilled water until the cup lip, put in a 50 ml volumetric flask and sufficient volume, filtered until clear, formed filtreate and residue. The filtrate was analyzed using Atomic Absorption Spectrophotometer at wavelengths of 283.2 nm and 228.9 nm for Pb and Cd. The results of the analysis showed that the Pb metal conted were 0.59 ppm, 0.89 ppm, 0.59 ppm for samples 1, 2 and 3, whereas for the Cd metal were 0.22 ppm, 0.25 ppm, 0,29 ppm for samples 1, 2 and 3. The results of the analysis exceeded the threshold value set by SNI in 2009, namely for metals Pb 0,5 ppm and Cd 0,22 ppm. So thet seawed originating from North Kolaka waters has been contaminatied with Pb and Cd metals and has the potential to cause accumulation in the human body if consumend in the long time.
UJI STABILITAS SENYAWA BETASIANIN DARI EKSTRAK BUNGA KENOP (Gomphrena globosa L.) SEBAGAI PEWARNA ALAMI BAHAN PANGAN Nursyaqilah; Ilmiati Illing; Sukarti; Nururrahmah Hammado
Cokroaminoto Journal of Chemical Science Vol. 3 No. 2 (2021): Agustus
Publisher : Universitas Cokroaminoto Palopo

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Penelitian ini tentang uji stabilitas senyawa betasianin dari ekstrak bunga kenop (Gomphrena globosa L.) sebagai pewarna alami bahan pangan, bertujuan untuk mengetahui pengaruh lamanya penyimpanan, pengaruh suhu, pengaruh penambahan oksidator dan pengaruh pH terhadap stabilitas senyawa betasianin pada ekstrak bunga kenop. Metode pada penelitian ini melalui proses preparasi sampel, maserasi menggunakan etanol 48%, sampel didestilasi sebanyak 3200 ml yang menghasilkan 500 ml ekstrak bunga kenop. Berdasarkan penelitian yang telah dilakukan dapat disimpulkan bahwa suhu 9oC (suhu rendah), 27oC (suhu ruang), pengaruh sumber cahaya 30-35oC (dibawa sinar lampu), 50-55oC (dibawa sinar matahari) dan penambahan oksidator H2O2 (10:1) berpengaruh terhadap stabilitas senyawa betasianin. Sedangkan pH 5 tidak berpengaruh.
Sintesis dan Karakterisasi Bionano Hidroksiapatit (HAp) Secara Insitu Dengan Metode Hidrotermal Laode A. Kadir; Dian Permana; Thamrin Azis
Cokroaminoto Journal of Chemical Science Vol. 4 No. 2 (2022)
Publisher : Universitas Cokroaminoto Palopo

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The pokea clamshell contains high calcium content which has the potency to be used as a precursor of calcium in synthesis of hydroxyapatite (HAp). This study aimed to utilize the waste of the pokea clamshells as a precursor of CaO in synthesizing of HAp, and to carry out the characterizations. Analysis of CaO content XRF showed that pokea clamshell after calcination was 94.23% (by weight). The hydrothermal method synthesized HAp confirmed the formation of single phase of HAp as indicated by the sharpness of the phosphate (PO43-) vibration peak at 561.85; 962.01; and 1024.55 cm-1.
PENGARUH HIDROLISIS TERHADAP PRODUKSI BIOETANOL DARI LIMBAH KULIT JERUK DAN DAUN JAMBU BIJI Muhammad Nur Alam; Sartika Suardi; Ilmiati Illing
Cokroaminoto Journal of Chemical Science Vol. 4 No. 2 (2022)
Publisher : Universitas Cokroaminoto Palopo

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The increase in population causes an increase in transportation and industrial facilities which results in high demand and consumption of fuel oil (BBM). Therefore, alternative renewable energy sources are needed. One of the alternatives is bioethanol from orange peel waste (Citrus x sinensis) and guava leaves (Psidium Guajava). This study aims to determine how to make bioethanol from sweet orange peel waste and guava leaves and to determine the amount of ethanol produced. Orange peels (Sitrus xsinensis) and guava leaves (Psidium guajava) are commonly found in various areas, especially in Luwu and North Luwu regencies which can be used as alternative fuels. The methods in this study include the manufacture of flour, hydrolysis (for sample A1). The addition of distilled water without hydrolysis (for sample A2), fermentation and distillation to produce 4 ml of ethanol in sample A1. The drawback of this study is that sample A2 does not produce ethanol because the fermentation lasts too long so that the alcohol turns into ester compounds

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