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All Journal VALENSI Jurnal Natur Indonesia Gorga : Jurnal Seni Rupa The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia PROSIDING SEMINAR KIMIA MUDRA Jurnal Seni Budaya Indonesian Journal of Chemistry Dance and Theatre Review: Jurnal Tari, Teater, dan Wayang Batoboh : Jurnal Pengabdian Pada Masyarakat Jurnal Ecolab JURNAL PHOTON PROSIDING: SENI, TEKNOLOGI, DAN MASYARAKAT PROPORSI : Jurnal Desain, Multimedia dan Industri Kreatif Jurnal Riset Teknologi Pencegahan Pencemaran Industri Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks REACTOR : Journal of Research On Chemistry And Engineering Journal of Multidisciplinary Applied Natural Science JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Natural SAINTI: Majalah Ilmiah Teknologi Industri
Novesar Jamarun
Universitas Andalas
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Production of Starch-Based Bioplastic from Durio zibethinus Murr Seed Using Glycerol as Plasticizer Jannah, Nanda Raudhatil; Jamarun, Novesar; Putri, Yulia Eka
Jurnal Riset Kimia Vol 12, No 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.398

Abstract

Bioplastics are bio-based plastics from natural resources, made to replace conventional plastics. The utilization of biopolymers in bioplastics provide a faster degradation compared to petroleum-based plastics. Starch-based bioplastic from mixing Durio zibethinus Murr starch and glycerol as plasticizer have been conducted. In this research, the concentration of glycerol has been varied to study the effect on starch-based bioplastics mechanical properties. The tensile strength for Durio zibethinus Murr starch-based bioplastic with 20% glycerol was 50.28 MPa with 13.3% elongation. The functional group found on the Fourier transform infrared spectroscopy (FTIR) spectra indicated the presence of O-H stretch, C-H stretch, C=O stretch, and C-O stretch which stated the formation of bioplastic. The image results gained from scanning electron microscope (SEM) showed that the morphology surface of bioplastic was less homogenous and rough. The soil burial test for biodegradability showed Durio zibethinus Murr starch-based bioplastic achieved 38.9% weight loss in a 5-day observation.
Degradasi Zat Warna Orange-F3R dan Violet-3B secara Sonolisis Frekuensi Rendah dengan Penambahan Katalis C-N-Codoped TiO2 Reza Audina Putri; Safni Safni; Diana Vanda Wellia; Upita Septiani; Novesar Jamarun
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 1, May 2019
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1026.793 KB) | DOI: 10.15408/jkv.v5i1.7801

Abstract

Zat warna orange-F3R dan violet-3B merupakan zat warna organik sintetis turunan vat yang bersifat non-biodegradable. Degradasi kedua zat warna ini telah dilakukan secara sonolisis dengan penambahan katalis semikonduktor TiO2 anatase yang didoping karbon dan nitrogen. Proses sonolisis menggunakan iradiasi ultrasonik dengan frekuensi 35 kHz. Massa katalis optimum yang diperoleh untuk sonolisis zat warna orange-F3R adalah 9 mg dan 6 mg untuk violet-3B. Persen degradasi meningkat secara signifikan dengan penambahan katalis yaitu dari 8.3% menjadi 36.2% untuk sonolisis zat warna orange-F3R selama iradiasi 180 menit. Sedangkan, dengan waktu iradiasi yang sama persen degradasi dari zat warna violet meningkat dari 5.8% menjadi 34.2% setelah penambahan katalis. Kata kunci: C-N-codoped TiO2, sonolisis, ultrasonik, vat  Orange-F3R and violet-3B are non-biodegradable synthetic organic dyes. The degradation of these two dyestuffs has been done by sonolysis process with the addition of semiconductor TiO2 anatase catalyst which is doped by carbon and nitrogen atoms. The sonolysis process used ultrasonic irradiation with a frequency of 35 kHz. The optimum catalyst mass obtained for the orange-F3R dye sonolysis was 9 mg and 6 mg for violet-3B. The percentage of degradation increased significantly with the addition of the catalyst; it was from 8.3% to 36.2% for the orange-F3R dye during irradiation for 180 min. Meanwhile, by the same irradiation time, the degradation percentage of violet dye increased from 5.8% to 34.2% after the addition of the catalyst. Keywords: C-N-codoped TiO2, sonolysis, ultrasonic, vat-dye.
Sintesis Precipitate Calsium Carbonat Sebagai Filler Pada Plastik Ramah Lingkungan Sri Elfina; Novesar Jamarun; Syukri Arief; Akmal Djamaan
REACTOR: Journal of Research on Chemistry and Engineering Vol 1, No 1 (2020): Published in June 2020
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v1i1.4

Abstract

Batu kapur merupakan bahan tambang yang ketersediaannya sangat melimpah di Indonesia terutama daerah Sumatera Barat. Batu kapur disintesis untuk pembuatan filler Precipitate Calcium Carbonat. Hasil penelitian yang telah dilakukan terhadap filler Precipitate Calcium Carbonat dari batu kapur berdasarkan hasil analisis X-RD, FTIR dan SEM-EDX, dapat disimpulkan bahwa senyawa hasil sintesis dari CaO batu kapur adalah Precipitate Calcium Carbonat dengan jenis kristal aragonit dan kalsit. Sementara uji BET menunjukan luas permukaan spesifik filler Precipitate Calcium Carbonat dengan nilai 7,315 m2/g. Permukaan Plastik ramah lingkungan dengan penambahan filler Precipitate Calcium Carbonat dikarakterisasi menggunakan AFM didapatkan nilai Rq 0,43 µm.
Catalytic Performance of CaO/SiO2 Prepared from Local Limestone Industry and Rice Husk Silica Kamisah Delilawati Pandiangan; Wasinton Simanjuntak; Ilim Ilim; Heri Satria; Novesar Jamarun
The Journal of Pure and Applied Chemistry Research Vol 8, No 2 (2019): Edition May-August 2019
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2019.008.02.459

Abstract

This research was conducted to study the performance of CaO/SiO2 prepared from local limestone and rice husk silica as catalyst for transesterification of coconut oil. A series of catalysts with CaO loads of 5, 10, 15, 20, and 25% relative to silica was prepared using sol-gel method, followed by calcination at 700 °C for six hours.  The catalysts were then used to evaluate the effect of CaO loads on percent of conversion of coconut oil.  Several kinetic factors associated with transesterification was also investigated.  The products of transesterification were analyzed using GC-MS technique, revealing that they are composed methyl esters of fatty acid composing coconut oil. Quite significant effect of CaO loads observed, in which the higher the load, the higher the percent of conversion.  However, it should be noted that the use of 25% CaO led to formation of soap due to leaching of some CaO from the catalyst.  Taking this leaching into account, it was then concluded that percent of conversion of 98.3%, is the best result, which was obtained with the use of catalyst with CaO load of 20%, reaction time of 60 minutes, methanol to oil ratio of 8:1, and the catalyst amount of 5% relative to mass of the oil.
PENGARUH SUHU PADA PEMBENTUKAN PRECIPITATED CALCIUM CARBONATE (PCC) MELALUI METODA KAUSTIK SODA DENGAN MENGGUNAKAN PELARUT ASAM KLORIDA Budi Hermawan; Syukri Arief; Novesar Jamarun
Jurnal Riset Kimia Vol. 3 No. 1 (2009): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v3i1.36

Abstract

 ABSTRACT Precipitated Calcium Carbonate (PCC) is the limestone product resulting from certain process steps. By XRF measurement it has found that the content of CaO (oxide calcium) in limestone Bukit Tui Padang Panjang as follows 54.19%, SiO2 1.03%, Al2O3 0.39%, MgO 0.46% and Fe2O3 0.2%. Rendemen PCC at optimum concentration of 0.75 M HCl is 69.77%. The formation of PCC by using the highest PCC rendemen aquabides is 9.28% at optimum temperature of 50°C. With 0.75 M HCl, the highest rendemen is 79.32% at optimum temperature 70°C. The formation of crystals in the form vaterite, aragonite and calcite were evidenced by X-ray Diffraction (XRD). Treatment with 2.00 M HCl at 30°C showed the formation of vaterite (45.83%), aragonite (35.93%) and calcite (18.24%) with crystals size of 28.43 nm. In the other case, preparation with 0.75 M HCl at 30°C resulting the percentage of vaterite and aragonite which were 73.01% and 26.99% respectively fairished 28.06 nm. Then for the one which were treated with 0.75 M HCl at 70°C indicated the formation of vaterite (75.53%) fairished 33.68 nm and aragonite (24.47%). SEM (Scanning Electron Microscopy) towards the sample prepared from 0.75 M HCl at 30°C have clearly shown that the particle sphere fairished at 3.68 nm where the one treated with 0.75 M HCl at 70°C having particle sphere fairished at 3.3 µm showing needle like estimated of 3.8 µm. Keywords : Precipitated Calcium Carbonate (PCC), caustic soda method 
PEMBUATAN PRECIPITATED CALCIUM CARBONATE (PCC) DARI BATU KAPUR DENGAN METODA KAUSTIK SODA Novesar Jamarun; Yulfitrin -; Syukri Arief
Jurnal Riset Kimia Vol. 1 No. 1 (2007): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v1i1.54

Abstract

 ABSTRAK PCC dapat dihasilkan dari batu kapur melalui tiga metoda yaitu metoda solvay, karbonasi dan metoda kaustik soda.  Pada penelitian ini PCC disintesis dengan metoda kaustik soda yang dimodifikasi, yakni dengan mereaksikan batu kapur yang sudah dikalsinasi (CaO) dengan asam nitrat, membentuk garam kalsium nitrat yang mudah larut. Larutan garam yang terbentuk direaksikan dengan larutan natrium karbonat sehingga terbentuk endapan kalsium karbonat (PCC).  Berdasarkan analisis XRF kandungan CaO dalam batu kapur yang diambil dari 5 daerah (Halaban, Lintau Buo, Bukit Tui, Solok, Indarung) di Sumatera Barat berkisar antara 52,79% sampai 54,93%, dengan kandungan tertinggi pada daerah Lintau Buo (54,93%).   PCC yang dihasilkan paling banyak  diperoleh pada konsentrasi 2,00 M yaitu 96,52%.  Berdasarkan  analisis XRD, PCC mempunyai bentuk kristal kalsit dan vaterit  dengan ukuran kristal  13,95-14,02 nm, analisis dengan SEM menunjukkan partikel berbentuk kubus (kalsit)  dengan ukuran 2 µm.
DEGRADASI SENYAWA PERMETRINDENGAN MENGGUNAKAN TiO2-Anatase DAN ZEOLIT ALAM SECARA SONOLISIS Zilfa -; Hamzar Suyani; Safni -; Novesar Jamarun
Jurnal Riset Kimia Vol. 2 No. 2 (2009): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i2.162

Abstract

  ABSTRACT The research about the degradation of permethryn compound had been done by sonolysis method using anatase- TiO2 and natural zeolyte (mordenit kinds) as catalysts. Permethryn is one of synthetic pyretroid pesticides that low toxicity for mamals but it is high toxicity for fishs, insects and water microorganisms. Sonolysis method is conducted by using ultrasonic wave at frequency 45 kHz. The results show that sonolysis method without the addition of anatase-TiO2 and zeolite on optimum temperature at 40°C during 120 minutes treatments could be degrade 20 mg/L permethryn until 22.23%. In other hands, the degradation of 20 mg/L permethryn in the same condition with adding 0.002 g anatase-TiO2 achieved 44.95% but for using 0.2 g zeolyte could be degrade 52.34%.  Keywords :  degradation, permethrin ,TiO2-anatase , sonolysis, zeolite   
DIP-COATING SENYAWA KALSIUM FOSFAT DARI BATU KAPUR BUKIT TUI MELALUI METODE SOL-GEL Novesar Jamarun; Lia Anggresani; Syukri Arief
Jurnal Riset Kimia Vol. 5 No. 1 (2011): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i1.179

Abstract

 ABSTRACT Preparation of Dip-Coating Calcium Phosphate via sol-gel method using natural limestone Bukit Tui as calcium precursors and diammonium hydrogen phosphate as phosphorus precursors with sol-gel process has been investigated. Ethanol was used as solvent and DEA (diethanolamine) was used stabilizing agent. The powder were prepared by calcinated the sol at 950 oC. The products were characterized by Fourier Transform Infra Red, X-Ray Diffraction and Scanning Electron Microscopy. FTIR results showed that the vibration form was PO43-, P2O74-, O-H and CO2. XRD patterns of powder with various Ca/P mol ratio showed that the product of calcium phosphate was Ca2P2O7 and also found the hydroxyapatite Ca10(PO4)6(OH)2 in Ca/P mol ratio 1,7. SEM images of powder calcium phosphate revealed that their morphology were spheric and homogen. The coating process was done at glass substrate with coating speed 20 cm/min by calcinations at 400 oC. XRD patterns of thin layer showed that the product was Ca2P2O7 and SEM images of thin layer revealed that their morphology were bulk. Keywords: Natural limestone, calcium phosphate, hydroxyapatite, sol-gel, dip-coating
PEMBUATAN PASTA DAN PEMBENTUKAN LAPISAN TIPIS HIDROKSI APATIT KARBONAT Selfa Dewati Samah; Syukri Arief; Novesar Jamarun
Jurnal Riset Kimia Vol. 7 No. 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.180

Abstract

 ABSTRACTPaste of Carbonated Hydroxyapatite (CHA) as a biocompatible material that can be used in thebone and teeth repair has been developed on preparation of thick film. CHA paste was preparedby mixing precipitate of CHA with CaSO4 and polyethylene glycol (PEG) in 2-propanol assolvent. Paste was deposited on substrate to get thick films by screen printing method. X raydiffraction (XRD) analysis has shown hexagonal crystal structure and crystal size of CHAacquired 7,2 nm by Scherrer’s method. Fourier Transform Infrared (FTIR) analysis has shownabsorption spectra which indicating phosphate, carbonate, and hydroxide group. Size of thiscomposite particles analyzed by PSA (particle size analyzer) about 3μm and pore size was 0.44-0.49 nm obtained from BET analysis, increased with the addition of CaSO4 (0.44 to 0,49 nm).Rephrase PEG was found as an adhesive and homogenize paste on substrat surface. In addition,CHA paste also potentially can be used as bone cement.Keywords : Paste, thick film, carbonated hydroxyapatite
SYNTHESIS AND CHARACTERIZATION OF MODIFIED MESOPOROUS SILICA-IMOBILIZED Cu(II)-ACETONITRILE COMPLEX AND ITS APPLICATION IN TRANSESTERIFICATION OF FRYING OIL Syukri -; Rycce Sylviana Pratikha; Novesar Jamarun
Jurnal Riset Kimia Vol. 7 No. 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.184

Abstract

 ABSTRACTMesoporous silica has attracted rapidly growing attention in catalysis. In this work, mesoporoussilica was synthesized by using CTAB surfactant and then modified by AlCl3. Such materialwas used as support for Cu(II)--acetonitile complex and applied in transesterification of fryingoil. The XRD pattern of the obtained silica confirms the availability of chracteristic peak onsilica surface while its TEM exhibits the uniformity of nanochannel of the mesoporous silica.The particle size of silica support has become smaller after grafting process showed by SEMimages. FT-IR spectra of the materials indicated that the Cu(II) grafted on the mesoporoussilica was in the form of its acetonitrile complex. Supprisingly, the Cu loading the graftedcatalyst was found to be very high. That was 21%, when the catalyst applied ontransesterification of the examined frying oil the amount of total methyl ester yielded were of65%.Keywords: mesoporous silica, AlCl3, Cu(II)-acetonitrile complex, transesterification
Co-Authors -, Yulfitrin Adlis Santoni Ahmad Hafizullah Ritonga Aju Deska Akmal Djamaan Amirullah, Tri Yupi Anggresani, Lia Arifin, Indra Aritonang, Barita Arizal Firmansyah Asril Asril Boy Isfa Boy isfa Budi Hermawan BUSTANUL ARIFIN Caniago, Sintia Cici Wulandari DARMANSYAH . Denny Akbar Tanjung Denny Akbar Tanjung Didik Prasetyoko Edy Suisno Elfina, Sri Emriadi - Fachry Abda El Rahman Fadhilatul Khaira Fejri Subriadi Firdaus Firdaus G Gunawarman, G Giovani Giovani Hafnimardiyanti Hafnimardiyanti Hamzah Hamzah Hamzah Hamzah Hamzar Suyani HAR, Rusli Heri Satria Hermansyah Aziz Hermawan, Budi Ilim Ilim Islami, Dini Muthi'ah Iswandi Iswandi Kamisah Delilawati Pandiangan Kamisah Delilawati Pandiangan Lia Anggresani Lili Suparli S.Sn., M.Sn Lisa Utami Lisa Utami Mansur Halilintar Matlal Fajri Alif Nabiila Ayyu Trycahyani Nanda Raudhatil Jannah Navisha Yustitia Norman Ferdinal Olly Norita Tetra Prasejati, Arika Putri, Dhea Rahmanda R.M PRAMUTOMO R.Y. Perry Burhan, R.Y. Perry Restina Bemis Restina Bemis, Restina Reza Audina Putri Risma Sari Rosliana Lubis Rosta Minawati Rosta Minawati Roswita Roswita Rycce Sylviana Pratikha Rycce Sylviana Pratikha Safni Safni Selfa Dewati Samah Selvi K asman Sisca, Vivi Solly Aryza Sri Elfina Sri Elfina Suarnikan Hulu Sumaryati Syukur Surya Darma Susas Rita Loravianti Syukri - Syukri Arief Syukri Syukri Syukri Syukri Syukri Syukri Tanjung, Denny Akbar Tricahyani, Nabiila Ayyu Trio Saputra Upita Septiani Vivi Sisca Vivi Sisca Wasinton Simanjuntak Wellia, Diana Vanda Wulandari Wulandari Yulfitrin - Yuli Yetri Yuli Yetri Yulia Eka Putri, Yulia Eka Yulidar Laila Safitri Yulizar Yusuf Yundari, Yundari Zetra, Yulfi Zilfa Zilfa