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JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Published by Universitas Sari Mutiara Indonesia
ISSN : ""     EISSN : 26153378     DOI : https://doi.org/10.51544/kimia.v6i1
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Materials Science & Nanotechnology
Focus on results study and literature review in the scope of chemistry education and chemistry sciences in the world. Scope: Chemistry Education Analytical chemistry, including new techniques and instrumentation Biochemistry and medicinal chemistry Inorganic chemistry, including main group, transition metal, and f-block compounds, as well as coordination, organometallic, and solid-state chemistry Materials chemistry of hard and soft matter, from the nanoscale upwards Nuclear chemistry and radioactivity Organic chemistry, including synthesis, characterization, and properties of organic compounds, as well as a study of organic reactions and their mechanisms Physical chemistry and chemical physics Sustainable, green, and environmental chemistry Theoretical and computational chemistry
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 131 Documents
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INCREASING TRANSPARENT SOAP PRODUCTION BY UTILIZING VIRGIN COCONUT OIL (VCO) AND ORANGE PEEL EXTRACTTO INCREASE ANTIOXIDANT PROPERTIES Hestina; Gultom, Erdiana; Zai, Liver Iman Putra; Mendrofa, Yelsin Alfidar
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i2.4809

Abstract

Orange peel may be a plant that produces fundamental oils that are utilized as cancer prevention agents. Straightforward soap is one of the cleanser innovations that creates cleanser more alluring and includes a smoother froth. In this ponder utilizing the refining strategy to get fundamental oil extricates from orange peels. At that point, in this ponder utilizing virgin coconut oil as an fixing in making cleanser, where virgin coconut oil (VCO) is an oil determined from coconut starch quintessence containing tall lauric corrosive which serves to smooth and moisturize the skin.  The examination conducted in this think about was the investigation of water substance, cleanser pH, tall froth, free antacid, cancer prevention agents, and FTIR. The strategy utilized in analyzing antioxidant movement in this think about is the DPPH strategy. In this ponder, water substance was gotten as much as 18%, 26%, 28%, and 30%. The pH esteem in this consider contains a esteem of 8 and free soluble base test values were gotten at 0.2%, 0.3%, 0.2% and 0.1%. For the test esteem of antioxidant action of basic oils gotten by 63.95%, in straightforward cleanser with the expansion of fundamental oils gotten by 64.14%, in straightforward cleanser without the expansion of basic oils gotten by 45.23%. For tall yields froth is gotten on normal 7 cm. The esteem of pH and free antacid substance in this think about has met the Indonesian National Standard (SNI) for straightforward strong cleanser.
UNJUK KERJA NaOH DALAM MEREDUKSI LOGAM BERAT PADA LIMBAH ABU BOILER Sembiring, Maria Peratenta; Sri Irianty, Rozanna; Zulfansyah; Chairul
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.4950

Abstract

Proses pembakaran batu bara menghasilkan emisi berupa gas SO2, NO2, CO, CO2, volatile hydrocarbon (VHC), suspended particulate matter (SPM), serta residu padat berupa abu boiler. Abu boiler mengandung berbagai logam berat beracun, diantaranya tembaga (Cu), kobalt (Co), kromium (Cr), cadmium (Cd) dan timbal (Pb). Penelitian ini bertujuan untuk menentukan efisiensi reduksi logam berat Cu, Co, Cr, Pb, dan total dengan melakukan ekstraksi menggunakan pelarut kimia NaOH dan mengubah logam transisi menjadi kompleks dengan Ethylene diamine tetraacetic acid (EDTA) pada rasio EDTA: abu boiler sebesar 1:2, 1:1, 2:1; durasi pengadukan sebesar 2 dan 4 jam; serta suhu ekstraksi sebesar 25 dan 60 oC. Analisis Inductively Coupled Plasma (ICP) dilakukan untuk mengetahui penurunan kadar logam berat dari ekstrak abu boiler. Hasil penelitian menunjukkan bahwa kondisi ekstraksi berupa rasio EDTA: abu boiler sebesar 2:1, durasi pengadukan sebesar 4 jam, dan suhu ekstraksi sebesar 60 oC dapat menghasilkan persentase penurunan kadar logam berat total tertinggi yang mencapai 77,2% dengan persentase penurunan kadar Co, Cr, Cu, dan Pb secara berturut-turut sebesar 75,4%, 77,9%, 74,5%, dan 81,9%. Penelitian ini diharapkan dapat menjadi rekomendasi bagi penelitian selanjutnya dalam mengeksplor potensi pemanfaatan abu boiler yaitu sebagai bahan campuran aspal, pembuatan batako, dan sebagainya.
FABRICATION AND CHARACTERIZATION OF POLYETHERSULFONE (PES) MEMBRANES BY BLENDING POLYMERS FOR REMOVAL OF ORGANIC COMPOUNDS IN AIR Br Sembiring, Nava Resi; Ramadani, Devi; Fathanah, Umi; Sofyana
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.4962

Abstract

The PES membrane was modified using a polymer blending method to improve the performance and characteristics of the membrane. This research aims to see the effect of adding biosilica additives on the performance characteristics of PES membranes and determine the optimal composition of additives and solvents for making membranes. The membrane was made using the Non-solvent Induced Phase Separation (NIPS) method with a composition consisting of 18% PES, with the addition of varying concentrations of silica (1%, 2%, 3%, and 4%) and the membrane using the solvent N-Methyl- 2 Pyrrolidone (NMP) and Dimethyl Sulfoxide (DMSO). Membrane characterization was carried out by observing membrane morphology using Scanning Electron Microscopy (SEM), membrane surface functional group analysis test using Fourier Tranform Infrared (FTIR), membrane porosity test using the dry-wet weight procedure method, the highest porosity value was found on membrane B2 using a solvent DMSO with 2% silica is 16.88%. Membrane performance was carried out by pure water flux testing, the highest pure water flux value was found in membrane B2 with 2% silica, namely 64.14 L/m2.h. The antifouling test uses flux ratio recovery, the highest antifouling value is found on the A3 membrane with 3% silica, namely 91.3%. As well as rejection of the humic acid solution as a Natural Organic Matter (NOM) sample model using the ultrafiltration (UF) module with a dead end filtration flow system, the highest rejection value was found on the B2 membrane with 2% silica, namely 64.4%.
VERIFIKASI KUALITAS ANALISIS MANGAN MENGGUNAKAN TEKNIK ICP-OES DALAM SAMPEL AIR MINUM Risma Sari; Sutopo, Fiotentinada Puspita
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5016

Abstract

Drinking water quality, including the levels of dissolved metals, is an important public health consideration. Manganese (Mn) is a naturally occurring metal that can be present in drinking water sources, and excessive intake of Mn can have adverse health effects. The objective of this study was to verify the performance of the analytical method for the determination of manganese (Mn) concentration in drinking water samples using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) techniques at the PT XYZ Laboratory. The method verification included tests for analyte identity confirmation, linearity, precision, accuracy, as well as the determination of the Method Detection Limit (MDL) and Limit of Quantification (LOQ). The verification results showed that the ICP-OES method met the established performance requirements. The linearity test yielded a correlation coefficient (r) of 0.9998, fulfilling the criteria of r ≥ 0.995. The percent relative standard deviation (% RSD) value in the precision test was 1.41%, meeting the requirement of % RSD ≤ 2/3 % CV Horwitz. The accuracy test provided an average percent recovery of 98.66%, which is within the acceptable range of 85-120%. The determined MDL was 0.0006 mg/L, while the LOQ was 0.002 mg/L, both meeting the criteria of MDL < spiked concentration < 10 MDL and LOQ < environmental quality standard. In conclusion, the method for the determination of Mn concentration in drinking water using ICP-OES has been verified and can be used for routine analysis at the PT. XYZ Laboratory, supporting the monitoring and control of Mn levels in drinking water to ensure public health protection.
THE EFFECT OF MOLECULAR WEIGHT ON THE THERMAL STABILITY OF CELLULOSE ACETATE Zebua, Suniati; Zagoto, Nasrani; Halawa, Advent Tri Yanti; Zai, Liver Iman Putra; Purwandari, Vivi; Harahap, Mahyuni
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5017

Abstract

An organic ester with good mechanical characteristics (such as a high Young's modulus and tensile strength) is cellulose acetate (CA), a biobased polymer. Over the past few decades, the thermal characteristics of CA have been extensively studied. This study looked at the morphology and thermal characteristics of plasticized CA, particularly its mass loss according to thermogravimetric analysis. The analysis and comparison of the overall thermal behavior with theoretical models was done. The results of this study may have particular significance as certain polymers have a recognized dependence on β-relaxation for their mechanical attributes; this may also apply to CA.
ANALYSIS OF HAZARDOUS COMPOUNDS IN REFILLABLE ROLL-ON PERFUMES CIRCULATING IN GORONTALO CITY USING GC-MS Ibrahim, Indriyanti; Isa, Ishak; Rumape, Opir; Aman, La Ode; Kunusa, Wiwin Rewini; Kilo, Jafar La; La Kilo, Akram
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5101

Abstract

This study aims to analyze the potentially hazardous compounds in refillable roll-on perfumes. The analytical method employed was GC-MS. The results from GC-MS analysis revealed hazardous compounds including Alpha-Pinene with concentrations in samples A-E = 0.0048 ppm, 0.0035 ppm, 0.0105 ppm, 0.0038 ppm, 0.0034 ppm; Dipropylene glycol with concentrations in samples A-E = 0.0322 ppm, 0.0162 ppm, 0.0692 ppm, 0.0493 ppm, 0.0465 ppm; Limonene with concentrations in samples A-E = 0.0705 ppm, 0.0373 ppm, 0.0222 ppm, 0.1462 ppm; Linalool with concentrations in samples A-E = 0.0092 ppm, 0.0568 ppm, 0.0146 ppm, 0.1298 ppm, 0.1233 ppm; Linalyl Acetate with concentrations in samples A-E = 0.1207 ppm, 0.0719 ppm, 0.0413 ppm, 0.1418 ppm, 0.1285 ppm. The levels of these compounds in the samples are below exposure thresholds, suggesting their current use is considered safe. However, stringent government oversight is necessary for refillable perfume products available in Gorontalo City.
KINERJA ALAT TIPE TRAY DRYER DENGAN MEMANFAATKAN SISTEM SOLAR CELL UNTUK PENGERINGAN BIJI KAKAO Kurniawan, Yoga Kurniawan; Yuliati, Selastia; Purnamasari, Indah
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5188

Abstract

Pengeringan biji kakao yang dilakukan masyarakat saat ini masih secara manual (konvensional), yaitu dengan memanfaatkan energi cahaya matahari (dijemur), sehingga memakan waktu yang cukup lama. Tujuan penelitian ini adalah mempercepat proses pengeringan pada biji kakao dengan menggunakan alat pengering tipe tray dryer. Pengering tipe tray dryer yang dirancang memanfaatkan tenaga dari solar cell sebagai media pengeringan. Pada penelitian ini, alat tray dryer dirancang memiliki kapasitas 1 kg dengan 4 tray yang berbahan aluminium, alat ini juga dilengkapi dengan solar cell berkapasitas 50 watt-peak. Parameter yang diukur pada penelitian ini di antaranya, massa biji kakao sebelum pengeringan, massa biji kakao sesudah pengeringan, temperatur masuk biji kakao, temperatur keluar biji kakao, temperatur masuk udara, temperatur keluar udara, laju udara masuk, laju udara keluar, perpindahan panas konveksi, konduksi, radiasi, humidity, dan relatif humidity dengan variasi temperatur pengeringan 60℃ dan 70℃, serta variasi waktu pengeringan 15 menit sampai 180 menit. Menentukan efisiensi alat tray dryer dari perpindahan panas secara konduksi, konveksi, dan radiasi. Hasil penelitian menunjukkan bahwa kinerja dari alat tray dryer cukup optimal untuk mengeringkan biji kakao karena mampu menguapkan kadar air pada biji kakao dengan nilai akhir 11,88% pada temperatur 70℃ selama 180 menit. Berdasarkan hasil penelitian yang telah dilakukan bahwasannya kualitas biji kakao sudah hampir mendekati ketentuan SNI-01-2323-2008 yaitu 7,5%. Hasil penelitian juga menunjukkan efisiensi thermal alat tertinggi dengan nilai 73,35% pada temperatur 70℃.
PENGARUH PERENDAMAN NAOH 5% PADA LIMBAH TANDAN KOSONG KELAPA SAWIT TERHADAP KUALITAS PAPAN PARTIKEL DENGAN PEREKAT PP-G-MAH Adiansyah; Dabukke, Hotromasari; Sijabat, Salomo; Nababan, Todo Manaek; Harefa, Abid Jaya; Putri, Mutiara Ananda; Naibaho, Yosari Pratama
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5222

Abstract

Pengaruh Perendaman NaOH 5% pada Limbah Tandan Kosong Kelapa Sawit Terhadap kualitas Papan Partikel dengan Perekat PP-g-Mah. Penelitian ini dilakukan dengan memanfaatkan limbah tandan kosong kelapa sawit yang dihaluskan pada ukuran 100 mesh dengan perendaman NaOH 5% dalam jangka waktu 12 Jam. Tujuan penelitian ini adalah untuk melihat analisis morfologi permukaan dengan metode SEM (Scanning Electron Microscope) dan gugus fungsi FT-IR (Fourier Transform Infrared Spectroscopy). Hasil pengujian SEM dapat diketahui bahwa sudah terjadi homogenitas antara serat dan plastik PP/BPO dan PP-g-Mah pada pembutan papan partikel hal ini terlihat adanya ikatan antara matrik dengan seratnya sangat baik, hal tersebut berhubungan erat dengan penyebaran gaya pada komposit dalam reaksi yang terjadi. Hal tersebut dapat memberikan dampak signifikan papa kualitas papan partikel yang dihasilkan dengan foto permukaan yang lebih homogen. Dari hasil SEM spesimen sampel diperoleh bahwa serbuk LTKKS tercampur dengan plastik PP/BPO/PP-g-Mah dengan baik walaupun masih ada cacat void, bubbles, blackspot dan celah rongga papan partikel. Hasil Uji FT-IR pada LTKKS/PP-g-Mah/BPO/DVB, menunjukkan adanya gugus fungsional seperti hidrokarbon, alkohol, aldehyde, asam, hidroksi, karboksilat, keton, klorida, gugus nitrat, gugus nitril, gugus amina, gugus fenol, gugus hidrogen sulfida, gugus sulfur dan gugus oksigen dan terjadi perubahan signifikan akibat pengaruh perendaman NaOH 5%.
CONDUCTIVITY ANALYSIS OF CU/N-GRAPHENE AND NI/N-GRAPHENE AS ELECTRODES ON PRIMARY BATTERY ANODES Simanjuntak, Crystina; Siburian, Rikson; Jiamin, Amanda
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5325

Abstract

This study used a modified Hummer method to synthesize Graphene and nitrogen dopant to produce N-Graphene. Cu/N-Graphene and Ni/N-Graphene electrodes were each made using the impregnation method. Conductivity analysis of graphene, N-graphene, Cu/N-Graphene, and Ni/N-Graphene was carried out using a multimeter. The conductivity data of Cu/N-Graphene (83.16 µS/cm) and Ni/N-Graphene (85.67 µS/cm) produced were higher than commercial battery anodes (26 µS/cm). These data prove that N-graphene can improve the performance of Cu/N-Graphene and Ni/N-Graphene on primary battery anodes and can be used as an alternative anode on primary battery anodes.
PEMBUATAN SABUN DENGAN EKSTRAK ETANOL DAUN KERSEN (MUNTINGIA CALABURA) SEBAGAI ANTISEPTIK ALAMI Putri, Elisa; Amilda, Putri; Lubis, Meutia Putri; Astari, Weni
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 2 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v9i2.5354

Abstract

Liquid soap is a liquid skin cleansing preparation made from soap base with the addition of other permitted ingredients and is used to cleanse the skin without causing irritation to the skin which can be caused by bacteria. This study aims to determine the effect of the addition of ethanol extract of kersen leaves in liquid soap preparations against Staphylococcus aureus bacteria. Liquid soap formulation of ethanol extract of kersen leaves (Muntingia calabura) was formulated in 3 (three) formulations, namely F1 soap preparation with 25% extract concentration, F2 with 30% kersen leaf ethanol extract concentration, and F3 with 35% kersen leaf ethanol extract concentration. Antibacterial testing was carried out using the disc diffusion method. The results of the antibacterial activity test of antiseptic liquid soap preparations F1 soap preparation has an inhibition of 16.82 mm, formulation 2 30% extract concentration has an inhibition of 19.52 mm, F3 extract concentration has an inhibition of 21.90 mm and positive control Dettol soap has an inhibition of 22.22 mm against Staphylococcus aureus bacteria. The conclusion of this study is that ethanol extract of kersen leaves has antibacterial activity against Staphylococcus aureus bacteria and the most optimal inhibitory concentration is kersen leaf extract soap preparation with a concentration of 35% with a very strong inhibition zone category.

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