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All Journal JURNAL KIMIA SAINS DAN APLIKASI KOVALEN: Jurnal Riset Kimia Jurnal Sains dan Teknologi Pangan Jurnal Progres Kimia Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Chemistry Indonesian Journal of Chemical Research Jurnal Ilmu Kefarmasian Indonesia Sarwahita : Jurnal Pengabdian Kepada Masyarakat Cokroaminoto Journal of Chemical Science Jurnal Mandala Pengabdian Masyarakat Jurnal Akademika Kimia Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Jurnal Akademika Kimia Jurnal Analis Kesehatan Kendari

THAMRIN AZIS

UNIVERSITAS HALU OLEO

Author-ID : 491531

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 24 Documents Claim Missing Document

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Synthesis of Dansyl Cyclen and Preliminary Study of Its Fluorescent Properties La Ode Kadidae; Ruslin Ruslin; Thamrin Azis; La Aba; Laode Abdul Kadir
Jurnal Kimia Sains dan Aplikasi Vol 25, No 2 (2022): Volume 25 Issue 2 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

The synthesis of a dansyl cyclen-based compound as a potential chemical sensor has been carried out. The initial study of its fluorescent properties has also been conducted. This study aims to synthesize a cyclen-based compound comprising three identical pendant arms and another different arm carrying a dansyl fluorophore. Producing these heterogenous pendant arms, a-three pendant arm cyclen 9 was reacted with dansyl aziridine 10. The synthesis products were characterized using 1H NMR, 13C NMR, IR, and elemental analysis. In addition, a Fluorescent Spectrophotometer has been used to assess the fluorescent intensity changes of the synthetic ligand in a range of pH 2–13 and when it was titrated with some metal ions. Based on the results of characterization with 13C NMR for compound 2 and additional characterization with IR and elemental analysis for its hydrochloric form 11, it is wisely said that the proposed compound has been successfully synthesized, giving 66% yield as viscous brown oil 2. Moreover, the fluorescent property showed that the higher the pH employed, the higher the fluorescent intensity observed. Meanwhile, the addition of some cationic metals revealed that cadmium (II) gave the highest increase in the fluorescent intensities among other cationic metals.

Study of Equilibrium and Kinetics of Pb(II) in Solution Using Persimmon Tannin Gel as an Adsorbent Thamrin Azis; La Ode Ahmad; Fajrin E. Rosa; Laode Abdul Kadir
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Heavy metals concentrations exceeding the recommended threshold are hazardous for the environment, so there is a need for handling it safely. The purpose of this research was to determine the adsorption capacity and kinetics of adsorption. This research uses an adsorption method in the process of removing Pb(II) heavy metal ions using persimmon tannin gel. Besides the influence of contact time, pH, and the concentration of Pb(II) metal ions on adsorption, a kinetics study was also carried out. The adsorption rate is obtained through the adsorption rate constant (K) and the reaction order generated from the kinetics model. Based on the results of the research, showed the optimum adsorption process, which is 20 minutes and at a pH of 5. The maximum adsorption capacity of 17.62 mg/g with the value of the standard energy changes of Gibbs adsorption (-ΔG° = -14.274 kJ/moll) indicates that the adsorption takes place through physical interaction. The kinetic adsorption gives the adsorption rates a constant of, k = 0.008231 g/mg.min.

Study of Kinetics and Adsorption Isotherm of Methylene Blue Dye using Tannin Gel from Ceriops tagal Thamrin Azis; La Ode Ahmad; Keke Awaliyah; Laode Abdul Kadir
Jurnal Kimia Sains dan Aplikasi Vol 23, No 10 (2020): Volume 23 Issue 10 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Research on the equilibrium and adsorption kinetics of methylene blue dye using tannin gel from the Tingi tree (Ceriops tagal) has been carried out. This study aims to determine the capacity and adsorption kinetics of tannin gel against methylene blue dye. Several parameters, such as the effect of contact time, pH, and methylene blue dye concentration on adsorption, were also studied. Based on the research results, the optimum adsorption process is a contact time of 30 minutes and a pH of 7. The adsorption capacity increased to a concentration of 80 mg/L with a maximum adsorption capacity (qm) of 49.261 mg/g. The adsorption process follows the pseudo-second-order adsorption kinetics model and the Langmuir isotherm model.

Equilibrium and Adsorption Kinetic Study of Metal Ni(II) using Persimmon Tannin Gel La O. Ahmad; Ulfa H. Syam; Laode A. Kadir; Nohong Nohong; Muh Natsir; Nasriadi Dali; Imran Imran; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp111-116

Heavy metal concentration exceeding the threshold amount is hazardous to the environment, so it needs some treatment. The study aimed to know the capacity and kinetics of adsorption. This study used the adsorption method to remove the heavy metal ion Ni(II) using persimmon tannin gel. Influences of time contact, pH, and ion concentration in the adsorption process were also investigated. Results showed optimum adsorption at 60 minutes of time contact and pH 5. Variation of concentration made the adsorption decrease as metal ion Ni(II) concentration increased. The maximum adsorption capacity was 23.14 mg/g by using pseudo-second-order adsorption kinetic model.

Efektivitas Fotodegradasi Lignin dari Limbah Ampas Sagu (Metroxylon sagu Rottb.) Menggunakan Katalis TiO₂: The Effectiveness of the Photodegradation of Lignin from Sago (Metroxylon sagu Rottb.) Waste Using TiO₂ Catalyst Muh. Natsir; Aden Mula Pratiwi; Thamrin Azis; Nohong; Imran; Wa Ode Harlis; Alimin; La Ode Kadidae; Ruslan; C Bijang; La Ode Abd Kadir; Laily Nurliana
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 3 (2022): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i3.16149

Lignin degradation from sago (Metroxylon sagu Rottb.) waste has been carried out using a TiO2 catalyst. This research aims to determine the effectiveness of lignin degradation from sago waste using a TiO2 catalyst. Lignin from sago pulp was isolated using 10% NaOH and characterized using Fourier Transform Infra Red (FTIR) spectroscopy. The results of the characterization using FTIR show that the absorption at wave number 2937.59 cm-1 is the -C-H stretching vibration of the alkane functional groups, the absorption at wave number 2360.87 cm-1 is the vibration of the C≡C triple bond, the wave numbers 1795.73 cm-1 and 1637.56 cm-1 are associated with the stretching of the carbonyl group. The absorption at wave number 1427.32 cm-1 is a C-H vibration connected to an unsaturated bond in an aromatic ring. Absorptions at wave number 1105.21 cm-1, 1128.36 cm-1, 1153.43 cm-1 were the stretching vibration of -C-H on the guaiasil ring, and the absorption at wave number 1022.27 cm-1 was the stretching vibration of C-O-C ether. From this spectrum, it can be seen that lignin is not completely pure because it is probably still mixed with cellulose. The results of the effectiveness test of lignin degradation using a TiO2 catalyst with the help of UV light were able to degrade the lignin isolated by 31.43%, for 3 hours at a lignin concentration of 40 ppm.

Identifikasi dan Uji Aktivitas Antioksidan Senyawa Metabolit Sekunder Ekstrak Tanaman Cleome viscosa L: Identification and Antioxidants Activity Tests of Secondary Metabolite Compounds of Clome viscosa L. Plant Extracts Imran; Laily Nurliana; Muh. Natsir; Nohong; La Ode Abd Kadir; La Rudi; Ruslan; Thamrin Azis
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16340

Cleome viscosa L. has been used empirically by people on the island to treat diseases that have clinical symptoms such as malaria (fever, sweating, chills, and muscle aches). The purpose of this study was to determine the class of secondary metabolites and antioxidant activity. The extraction was carried out using the maceration method, while the fractionation was carried out using the separating funnel. The secondary metabolites found in the Cleome viscosa L. plant extract are alkaloids, flavonoids, steroids, terpenoids, tannins, and saponins. Antioxidant test conducted by DPPH method showed that the positive control of ascorbic acid and methanol extract obtained IC50 values of 3.86 ppm and 37.4 ppm, respectively.

Sosialisasi dan Pelatihan Pembuatan Camilan Kripik Kelapa Sebagai Upaya Peningkatan Pendapatan Ibu-Ibu Rumah Tangga Thamrin Azis; Maulidiyah Maulidiyah; Muhammad Nurdin; M. Natsir; Nasriadi Nasriadi; Nohong Nohong; Muhammad Zakir Muzakkar; Ratna Ratna; Imran Imran; La Ode Santiaji Bande; Halimatussaddiyah R; La Ode Abd Kadir; Aceng Haetami
Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 1 (2022): Edisi November 2022
Publisher : FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/amalilmiah.v4i1.23

Program Kemitraan Masyarakat Internal Universitas Halu Oleo (PKMI-UHO) merupakan kegiatan pengabdian pada masyarakat yang diharapkan memberikan model untuk mengatasi berbagai masalah dengan memberikan solusi terutama pengelolaan sumber daya alam menjadi produk bernilai jual tinggi dengan memanfaatkan teknologi sederhana. Tujuan kegiatan pengabdian kepada masyarakat adalah sosialisasi dan pelatihan tentang pengolahan kelapa menjadi keripik kepada masyarakat Kelurahan Petoahaa. Meningkatkan keterampilan masyarakat melalui transfer pengetahuan dalam mengelolah potensi lokal tanaman kelapa menjadi keunggulan lokal melalui produksi olahan kripik kelapa dan membantu menambah sumber pendapatan dalam mencapai taraf kehidupan yang lebih baik. Metode pendekatan yang dilakukan dengan cara edukasi dan pelatihan. Hasil kegiatan ini menunjukkan bahwa masyarakat terutama dari ibu-ibu rumah tangga mitra kerja memperoleh keterampilan dalam membuat keripik kelapa yang bernilai jual dan memasarkaan produk keripik kelapa agar dikenali oleh masyarakat luas.

Synthesis and Characterization of Activated Carbon from Waste Compedak Fruit (Artocarpus Champeden) Activated H3PO4 as Adsorbent of Methylene Blue Catherina Bijang; Matheis F. J. D. P. Tanasale; Dewi Sri; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i1.pp56-63

Synthesis of activated carbon from cempedak peel waste is carried out to utilize biomass waste. This study aimed to synthesize and characterize activated carbon from cempedak peel waste. The synthesis was carried out by chemical activation using phosphoric acid with a dry impregnation ratio of 1:4 (g sample:g H3PO4). Samples impregnated for 24 hours were then heated at 250℃—and then calcined at 350℃ and 450℃. The XRD and FTIR characterization results indicated that the activated carbon obtained had an amorphous structure and the activated carbon obtained had hydroxyl, carbonyl, and carboxylic groups. Activated carbon with the highest yield was obtained at a temperature of 350, namely 43%. The results of determining the water content of activated carbon obtained are 8.36% at 350 0C and 7.1% at 450 ℃. The value of water content and ash content of activated carbon from the skin of this cempedak fruit has met the Indonesian National Standard (SNI 06-3730-1995). The best-activated carbon yield was at a calcination temperature of 450, with the percentage of adsorption efficiency on methylene blue of 98.88%.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp111-116

Performance of The Composite Electrode of Reduced Graphene Oxide Palm Oil Shell - Zinc Oxide (rGOCKS - ZnO) as a Chemical Oxygen Demand (COD) Sensor by Photoelectrocatalysis Thamrin Azis; Muhammad Z. Muzakkari; Muh. Nurdin; Maulidiyah Maulidiyah; Wa O. Muslia; Catherina M. Bijang; Tahril Tahril
Jurnal Akademika Kimia Vol. 12 No. 2 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i2.pp123-131

The preparation of reduced graphene oxide composite electrodes from palm shells (rGOCKS-ZnO) as a chemical oxygen demand (COD) sensor by photoelectrocatalysis has been successfully carried out. The preparation of rGOPS - ZnO electrodes by thermal reduction method and modified Hummer. The XRD results showed several peaks of rGOCKS - ZnO namely 23.287 º, 26.781 °, 29.889 °, 32.468 °, 35.109 °, 37.14 °, 39.822 °, 43.559 °, 47.927 °, and 48.537 °. SEM-EDX analysis reveals the surface of graphene sheets containing aggregates in the shape of small particles attached to graphene sheets. The results of the EDX analysis consisted of C 67.82 %, O. 19.2 %, Zn. 7.85 % and 5.13 % impurity. The CV and LSV tests showed that the rGOAK - ZnO electrode with a variation of 1 gram: 0.3 gram had a good response to the oxidation process under visible light. The profile tests of these organic dyes (methylene blue) in concentrations of 0.5 ppm, 1.0 ppm, 2.0 ppm, and 3.0 ppm were applied by Multi Pulse Amperometry (MPA). The performance of the rGOPS - ZnO electrode has been in determining the value of COD by photo electrocatalytic good sensitivity, linearity, limit of detection, repeatability, and service life. The COD value was determined using the rGOPS - ZnO electrode and obtained 2.97897 mg/LO2 close to the theoretical value.

Co-Authors A. Nurwahida Aceng Haetami Aden Mula Pratiwi Ahmadin Tehuayo Alimin Alwahab Alwahab Amalia, Fajri Fitra Angga Febrian Bijang, Catherina M. C Bijang C Bijang Caterina Bijang Catherina Bijang Catherina M. Bijang Catherina M. Bijang Dewi Sri Dewi, Dian Puspita Dian Permana Eirene G. Fransina Fajrin E. Rosa Halimatussaddiyah R Haris W Hasanela, Nurani Holilah Holilah, Holilah I Wayan Sutapa Imran Imran Imran Irwan Irwan Juwita, Citra Keke Awaliyah Kelrey, Adhi G. La Aba La Agusu La O. Ahmad La Ode Abd Kadir La Ode Abd Kadir La Ode Abd Kadir La Ode Abd Kadir La Ode Ahmad La Ode Kadidae, La Ode La Ode Santiaji Bande La Rudi Laily Nurliana Laily Nurliana Laode A. Kadir Laode A. Kadir Laode Abdul Kadir Laode Abdul Kadir M. Natsir Mansur, Inda Ulfa Matheis F. J. D. P. Tanasale Maulidiyah Maulidiyah Maulidiyah Maulidiyah Maulidiyah MAULIDIYAH MAULIDIYAH Maulidiyah Maulidiyah Muh Natsir Muh. Natsir Muh. Natsir Muh. Natsir Muh. Nurdin Muh. Nurdin Muh. Zakir Muzakkar Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Muhammad Z. Muzakkari Muhammad Zakir Muzakkar Muhammad Zakir Muzakkar Muhammad Zakir Muzakkar Muzakkar, Muhammad Zakir Nasriadi Dali Nasriadi Nasriadi Nohong Nohong Nohong Nohong Nohong Nohong Nur Illyyin Akib Nurhaeni Ratna Ratna Ratna Ruslan Ruslan Ruslan Ruslin Ruslin Sahidin Shielda N. Joris SITTI HADIJAH SABARWATI Sitti Ratna Sri Wahyuni Syahrir T Nurwahida Tahril Tanasale, M.F.J.D.P. Ulfa H. Syam Viesta Valentin Octavian Wa O. Muslia Wa Ode Harlis Wiwik Handayani Yodha, Agung Wibawa Mahatva Zainal Syam Arifin Zul Arham

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