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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Bahan Alam Terbarukan PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman ALCHEMY Jurnal Penelitian Kimia JURNAL ATOMIK Jurnal Bahan Alam Terbarukan
Noor Hindryawati, Noor
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Materials Science & Nanotechnology

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SINTESIS KARBON AKTIF CANGKANG JENGKOL (Pithecellobium lobatum) DENGAN BANTUAN ULTRASONIK SEBAGAI BAHAN PENYIMPAN ENERGI ELEKTROKIMIA Hariati, Hariati; Hindryawati, Noor; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Research on the synthesis of activated carbon from jengkol shells (Pithecellobium lobatum) with the help of ultrasonic waves as an electrochemical energy storage material has been done. The activated carbon from jengkol shells is characterized by surface area using blue methylene method and pore morphology with SEM (Scanning Electron Microscope) instrument. The characterization results show that the active carbon with ultrasonic wave exposure has a larger surface area of 181.3693 m2/gram than the activated carbon without exposure to ultarsonic waves of 178.0290 m2/gram. The SEM results in activated carbon with ultasonic wave exposure indicate that the pore distribution is more evenly distributed, the number of pores more, and the pore size tends to be smaller, whereas in the activated carbon without the exposure of larger and slightly larger portions of ultrasound waves. The optimum value of capacitance on activated carbon without and with ultrasonic wave exposure of and 6.97 μF/gram and 5.21 μF/gram.
STUDY ON PHOTODEGRADATION ACTIVITY OF RHODAMINE B BY WO3/TIO2/SIO2 COMPOSITES IN VARIOUS MATERIAL WEIGHT CONDITION Adhaina, Karina; Hindryawati, Noor; Koesnarpadi, Soerja
JURNAL ATOMIK Vol 5 No 1 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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A study on photodegradation activity of Rhodamine B by WO3/TiO2/SiO2 composites in various material weight condition has been conducted. The photocatalytic process was carried out in a closed reactor equipped with visible lamps (grow LED 10 watt). To identify crystal structure, morphology and composition of composite WO3/TiO2/SiO2, the characterization performed using Scanning Electron Microscopy-Energy Diffraction-X (SEM-EDX). The results of characterization using SEM-EDX showed that composites have a non-uniform pore morphology. The photocatalytic test showed the optimum material weight at 0.15 gram with percent degradation of Rhodamine B dyes of 85.10%.
VALIDASI METODE RAPID TEST DALAM PENENTUAN TOTAL MOISTURE, ASH CONTENT, CALORIFIC VALUE (AR) PADA BATUBARA TERHADAP STANDAR ISO UKURAN 3 MM PT. KALTIM PRIMA COAL Sari, Ermalia Lintang; Panggabean, Aman Sentosa; Hindryawati, Noor
JURNAL ATOMIK Vol 1 No 2 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian validasi metode rapid test dalam penentuan total moisture, ash content, calorific value (as received) pada batubara terhadap standar ISO (International Organization for Standardizations) dengan ukuran 3 mm (studi kasus di PT. Kaltim Prima Coal) telah dilakukan. Tujuan penelitian ini adalah mengetahui perbedaan pada total moisture, ash content, calorific value jika dilakukan dalam basis (ar) dan mengetahui hasil jika batubara yang digunakan dalam operasional berukuran 3 mm. Berdasarkan penelitian yang telah dilakukan dengan menggunakan batubara ukuran 3 mm diperoleh hasil pada total moisture dan ash content untuk batubara ini tidak terdapat perbedaan dan dapat digunakan dalam operasional laboratorium, sedangkan pada calorific value terdapat perbedaan pada batubara ini. Dalam penentuan ini harus tetap memperhatikan range varian dari nilai reproducibility pada setiap parameter batubara.
ANTIHYPERGLYCEMIC ACTIVITY OF JAMBU MAWAR LEAVES EXTRACT (Syzygium jambos (L.) Aston) ON MALE RABBIT ALLOXANT INDUCTED Prastiwi, Mela; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Antihyperglycemic activity of jambu mawar leaves extract (Syzygium jambos (L.) Aston) to lower blood glucose levels in male rabbits (Oryctolagus cuniculus) induced by alloxant has been conducted. Simplicia jambu mawar leaves (Syzygium jambos (L.) Aston) were macerated using ethanol 96%. The testing activity of antihyperglycemic done experimentally et the laboratory with each dose of 374.5 mg/Kg and 749 mg/Kg given orally on the male rabbits in the induction alloxant. Measurement of blood glucose levels was done on the (7, 14, 21, 28 and 32) by using a glucometer and glucose test strips. The ethanol extracts of jambu mawar leaves (Syzygium jambos (L.) Aston) revealed the effect by decreasely the blood glucose levels in male rabbits induced by alloxant. Keywords: Jambu Mawar leaves (Syzygium jambos (L.) Aston), Antihyperglicemic, Alloxant and glucometer.
THE INFLUENCE OF Pb (II) ION CONCENTRATION ON PROTEIN CONTENT IN MUSSEL SHELLS (Mactra violacea) IN CONTAMINATED AREA OF TARAKAN ISLAND EAST KALIMANTAN Tanjung, Faisal; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 3 No 2 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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The researched about the correlation level of metal lead (Pb) towards the protein content of mussel shells (Mactra violacea) had been done. This research was taken in the coastal water of Tarakan, North Borneo. The research aimed to know concentration of ion (Pb) and protein content of mussel shells (Mactra violacea) based on the size and location of the different sampling. Afterwards, the lead (Pb) metal and protein were correlated using Least Square method. Analysis of concentration of Pb ion was performed by using AAS (Atomic Absorption Spectrofotometry) and analysis of protein content using Kjehdal method. From this research, it was found the concentration of Pb ion on point 1 is by an average of 0.7220 mg/L, on point 2 is by an average of 0.7433 mg/L and point 3 is by an average of 0.9208 mg/L. It is also found the content protein of mussel shells (Mactra violacea) on point 1 is by an average of 19,9883%, on point 2 it was found the average of protein content of 21.7714% and point 3 by an average 22.8664%. The correlation concentration of Ion Pb towards protein conten on kerang kepah (Mactra violacea) symbolized as r = 0.8448.
ACTIVATION OF ZEOLITE WITH ULTRASONIC WAVE FOR ADSORPTION RECTIVE YELLOW 86 ON SAMARINDA WASTE WOVEN Ronaldy, Igo Marsat; Hindryawati, Noor; N. S, R. R. Dirgarini Julia
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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The research about activation of natural zeolite with variation concentration HCl for adsorption reactive yellow 86 from waste liquid woven Samarinda has been conducted. The activation of zeolite was prepared with two way, by mechanicalstirring and ultrasonic assisted. From the X-Ray Diffraction (XRD) result showed that natural zeolite activated with ultrasonic (NZA-U) has 38 % composition of SiO2, while natural zeolite activated with mechanical stirring (NZA-MS) is 21 %. Surface area analysis using methylene blue shows for NZA-U is 25 m2/g and 24 m2/g for NZA-MS. The results on adsorption of reactive yellow 86 from waste liquid woven Samarinda using spectrophotometer visible on wavelength 417 nm shows the optimum condition adsorption on time contact60 minutes and concentration HCl 3 M, with percent of adsorption is 56.14 % for NZA-U and 53.93 % for NZA-MS
THE MANUFACTURE OF BIODEGRADABLE FILM FROM CEMPEDAK SEED STARCH AND CARBOXY METHYL CELLULOSE WITH THE ADDITION OF GLYCEROL Elean, Samuel; Saleh, Chairul; Hindryawati, Noor
JURNAL ATOMIK Vol 3 No 2 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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This research about the manufacture of biodegradable film from cempedak (Artocapus champeden sp.) seed starch and CMC (Carboxy Methyl Cellulose) as well as with the addition of glycerol as a plasticizer has been studied. The purpose of this research are to knowing the concentration of glycerol which have the best of tensile strength, percent elongation, water uptake and biodegradability and knowing the characteristic of biodegradable film produced. In this research the ratio of starch: CMC used is 7:3 while the concentration glycerol is added 10%, 20%, 30% and 40% from the weight of starch. The result of the best concentration of glycerol is glycerol 10%. Glycerol 10% produce a film with 19.62 N/mm2 of tensile strength, 4.98% of percent elongation, 54.33% of water uptake and 39.96% of degradation in 2 days with degradability 24.9 mg/day. Biodegradable film characterized by using FT-IR, analysis result of functional groups showing there are alcohol (O-H) and eter (C-O) groups which indicates that the film is biodegradable.
MINI REVIEW: SINTESIS NANOKOMPOSIT TiO2/Fe3O4 DAN PENGGUNAANNYA SEBAGAI FOTOKATALIS Putriani, Elsa Avrilia; Hindryawati, Noor
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Mini Review on Synthesis and Characterization of TiO2/Fe3O4 Nanocomposites as Photocatalysts aims to compare the photocatalytic activity of TiO2/Fe3O4 nanocomposites in the process of dye degradation. TiO2/Fe3O4 nanocomposites are used because they have good photocatalytic activity properties in the process of dye photocatalysis. Based on existing literature, TiO2/Fe3O4 nanocomposites can be synthesized using several methods such as sol-gel, impregnation, precipitation and coprecipitation. Then applied to the degradation of dyes by considering time, type of light, dye concentration and catalyst. So, this article reviews the latest developments in TiO2/Fe3O4 nanocomposites, especially in photocatalysts of methylene blue and methyl orange dyes by looking at the concentration of TiO2/Fe3O4 used. Keywords : Photocatalysis, Fe3O4 Magnetite, Nanocomposites, TiO2.
A MINI REVIEW: SINTESIS DAN KARAKTERISASI NANOKOMPOSIT Fe3O4/ZnO SERTA APLIKASINYA Apriliana, Nina; Hindryawati, Noor
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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The Fe3O4/ZnO nanocomposites have an interesting combination due to their constituent composition. Fe3O4 is a ferromagnetic material that can react with magnetic fields, while ZnO is a semiconductor material that has a large band gap and strong photocatalytic properties. This article aims to analyze research on Fe₃O₄/ZnO nanocomposites and their applications. Based on several articles, Fe₃O₄/ZnO nanocomposites can be made using several methods including sonochemical, co-presipitasi, sol-gel, hydrothermal, ultrasonication, solid-state, layer-by-layer self assembly and poliol methods. Characterization can be done using XRD (X-Ray Diffraction), SEM (Scanning Electron Microscope) and TEM (Transmission Electron Microscope) instruments. The Fe3O4/ZnO nanocomposites can be used as photocatalysts for dyes, antibiotics and p-nitrophenol. The ability of Fe₃O₄/ZnO nanocomposites in photocatalysis can vary depending on several factors such as pH, contact time, concentration of Fe₃O₄/ZnO nanocomposites or degraded substances, etc. In addition, Fe₃O₄/ZnO nanocomposites can also act as antibacterial agents that have quite good activity on several bacteria, namely Eschericia coli. (-), Bacilis subtilis. (+) and Staphylococcus aureus. (+). Keywords : Application, Nanocomposite, Synthesis
MINI REVIEW : SINTESIS KOMPOSIT Fe3O4/ARANG AKTIF SEBAGAI MEDIA ADSORPSI Laurentha, Nantha; Hindryawati, Noor
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Mini review of Fe3O4/activated carbon composite synthesis as adsorption media. The purpose of this mini review is to optimize adsorption efficiency through variations of different types of activated carbon. The Fe3O4/activated carbon composite is used as adsorption media due to its high adsorption capacity, and the magnetic properties of Fe3O4 facilitate the separation of the composite from the solution after the adsorption process. Based on a literature review, the Fe3O4/activated carbon composite can be synthesized using the co-precipitation method, and characterization is performed using Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD). Therefore, this article reviews recent developments regarding the Fe3O4/activated carbon composite as an adsorption medium for dye wastewater. Keywords : Fe3O4, activated carbon, composite, adsorption.
Co-Authors -, Rahayuningsih Abdul Aziz Adhaina, Karina Ahmad, Atika Aulia Akbar, Muhammad Marion Alimuddin Alimuddin Aman Sentosa Panggabean Apriliana, Nina Arief, M. Syaiful Ashari, Irfan Audi Zahid Iswaradi Az Zahra, Upi Fathimah Bergita, Angela Br Ginting, Survina Osalia Chairul Saleh Corebima, Damianus Develistur Daniel Daniel Duratulhikmah, Nur Fadhilah Elean, Samuel Erwin Erwin Eva Marliana, Eva Gaanty Pragas Maniam, Gaanty Pragas Hariati, Hariati Hariati, Hariati Helbianurramdan, Helbianurramdan Hiyahara, Irfan Ashari Husna Syaima Indriani, Isah Waliah Kusmiaty, Prilianda Laksono, Annuary Larasati, Zarra Udyani Laurentha, Nantha Mid, Arsy Aprilia Muhammad Marion Akbar N. S, R. R. Dirgarini Julia N., R.R. Dirgarini N., R.R. Dirgarini Julia Nanang Tri Widodo Octavianus, Riyan Octavianus, Riyan Oktaviani, Reka Palentin, Ersa Rizkita Pasuluran, Nirwanto Prastiwi, Mela puah, Siti Mar Putra, Narundana Perdana Putri, Rinda Anisyah Putriani, Elsa Avrilia Rahayuningsih Rahayuningsih, Rahayuningsih Rahmat Gunawan RAHMAT GUNAWAN Rakhmad, Rakhmad Ratna Kusuma Ronaldy, Igo Marsat Rudi Kartika, Rudi Saputra, Herdian Sari, Ermalia Lintang Sari, Helbyarti Mawar Setiawan, M. Pratsojo Soerja Koesnarpadi Subagyono, Dirgarini Julia Nurlianti Subagyono, R.R. Dirgarini Julia Nurlianti Subagyono, R.R. Dirgarini Julia Nurlianti Subagyono, RR Dirgarini Julia Nurlianti Subagyono, RR Dirgarini Julia Nurlianti Sukanadi, I Putu Sumarni Sumarni Syukri, Irma Syukri, Irma Tandirerung, Edman Tanjung, Faisal Teguh Wirawan Teguh Wirawan, Teguh Tika Widyastuti Wahyuni Ramadhani Wilsoma, Wilsoma Winanti, Renita Anggun Winni Astuti, Winni Wulandari, Duwi Devi Wulandari, Siti Aprilia Yuli Yana