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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Jurnal Natur Indonesia Jurnal Sains Materi Indonesia The Journal of Pure and Applied Chemistry Research Jurnal Farmasi Andalas Jurnal Riset Kimia Jurnal Kimia dan Kemasan Elkawnie Jurnal Litbang Industri Lantanida Journal Indonesian Journal of Chemistry Jurnal Ecolab Jurnal Katalisator Molekul: Jurnal Ilmiah Kimia Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Hydrogen: Jurnal Kependidikan Kimia REACTOR : Journal of Research On Chemistry And Engineering Jurnal Kimia dan Kemasan Jurnal Litbang Industri Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Akademika Kimia
Safni Safni
Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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Journal : Jurnal Riset Kimia

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PENGGUNAAN KATALIS ZnO-H2O2 UNTUK DEGRADASI ZAT WARNA RHODAMIN B DAN ALIZARIN-S -, Safni; Amelia, Fitrah; Liansari, Oktanora; Suyani, Hamzar; Yusuf, Yulizar
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.v3i1.87

Abstract

 ABSTRACT The textile industry produce colored waste liquid that can contaminate the line water and its populations. A number of dyes are using in textile industry processes such as rhodamine-B and alizarine-S. Both of dyes are toxic for human life. In order to reduce the concentration that dyes is used the sonolysis method which have good efficiency and effective to degrade this pollutants. Sonolysis was performed using an ultrasound energy at 47 kHz. Catalyst ZnO is used to get better degradation. Rhodamine-B 2mg/L with 0.3 g ZnO addition, pH 5, temperature 40°C get 35.44% degradation after 60 minutes. If we used 3 mL H2O2 30% in the same condition the degradation up to 42.67% and with the combination of 0.3 g ZnO - 3 mL H2O2 as catalysts it got 91.99% after 90 minutes. Alizarine-S 20 mg/L with 0.5 g ZnO addition, pH 5, temperature 50°C was degraded up to 86.45% after 35 minutes. Furthermore, the degradation reached 95.79% if it used 0.5 g ZnO and 25 mL H2O2 30% at pH 5 and temperature 50°C after 35 minutes sonolysis. Keywords : rhodamine-B, alizarine-s, ZnO, H2O2
AMOBILISASI KOMPLEK KOBAL(II) PADA POLI(4-VINILPIRIDIN) DAN KARAKTERISASINYA -, Syukri; -, Safni; Fadhilla, Anna
Jurnal Riset Kimia Vol 4, No 1 (2010): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v4i1.110

Abstract

 ABSTRACTAcetonitrile ligated cobalt(II) complex was successfully immobilized on poly(4-vinylpyridine) (P4VP). The grafted material was characterized by Fourier Transform Infra Red (FTIR), Scanning Electron Microscope (SEM), UV-Visible Spectrometry, Thermal Gravimetry-Differential Thermal Analysis (TG-DTA) and Atomic Absorption Spectrophotometry (AAS). The FTIR measurement confirmed a successful grafting indicated by the presence of a weak donor-acceptor interaction between N of poly(4-vinylpyridine) with the Co2+ of the complex. A change of surface morphology after immobilization process was evidenced by SEM photographs. TG-DTA analysis showed that the attached Co(II) complex on P4VP was found to be moderately thermally stable. The metal leaching of the obtained heterogeneous catalyst measured by AAS was found to be less than 0.1%. Keywords: Immobilization, Grafting, Heterogeneous catalyst, Donor-acceptor interaction, Surface area, Metal leaching
Penentuan Vanadium Secara Spektrofotometri Fosfowolfrovanadat Dalam Batuan Bukit Pianggu Kabupaten Solok -, Roswita; Suyani, Hamzar; -, Safni
Jurnal Riset Kimia Vol 2, No 1 (2008): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i1.96

Abstract

 ABSTRACT A simple, rapid and accurate Spectrophotometric method described to the determination of vanadium in ore using sodium tungstat as a complexing agent. The method is based on the oxidation of sodium tungstat to form a yellow colored on reaction with vanadium (V), having maximum an absorption occurred at 403 nm. The relative standar deviation of the method for 8 mg/L vanadium (n=11) was 0.24%, and the molar absorptivity is 2.026103 L mol-1cm-1 and sensitivity Sandell is 2.5  10-2 mg cm.2 . The recovery test is 99.47%.  The effect of ion interfering Fe  (element large amount in ore) on determination is describe. The general procedure which was developed is suittable for determination of 0-20 mg/L of Vanadium and should be applicable to variety of ore sample. Keywords : vanadium, spectrophotometric, sodium tungstat, ore
DEGRADASI SENYAWA PARAQUAT DALAM PESTISIDA GRAMOXONE® SECARA FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE Era, Yuni; -, Safni; Suyani, Hamzar
Jurnal Riset Kimia Vol 2, No 1 (2008): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i1.122

Abstract

 ABSTRACT This research is conducted to know whether the photolysis method by adding TiO2-anatase can degrade the paraquat compound in Gramoxone pesticide. Photolysis method is conducted by using UV 10 watt lamp at the wavelength of 365 nm. The result shows that photolysis method could degrade the paraquat compound at 4.0 mg/L concentration as 16.02% after 60 minutes irradiation. Paraquat compound with the similar concentration by adding 10 mg unmixed TiO2-anatase could degrade 26.01% after 60 minutes irradiation and 62.30% by mixing TiO2-anatase. Furthermore, paraquat with the same concentration and TiO2-anatase addition could degrade 99.54% after 240 minutes irradiation. Keywords : degradation, photolysis, paraquat, anatase-TiO2
DEGRADASI SENYAWA RHODAMIN B SECARA SONOLISIS DENGAN PENAMBAHAN TiO2 HASIL SINTESA MELALUI PROSES SOL-GEL Arief, Syukri; -, Safni; Roza, Putri Perdana
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.v1i1.86

Abstract

 ABSTRACTDegradation of rhodamine B had been done by sonolysis method. Optimum temperature sonolysis were found of 41-50 oC. In this condition, rhodamine B 2 mg/L could be degradated around 64.04% during 6 hours sonolysis. Percentage degradation of rhodamine B enhanced by addition of TiO2 in solution. TiO2 was prepared with sol-gel process using titanium isopropoxide (TIP), isopropanol and dietanolamine (DEA) as precursor. It was heated on 500 oC and 700 oC in order to get TiO2-anatase dan TiO2-rutile. Rhodamine B 2 mg/L could be degradated around 68.48 and 90.00 % during 6 hours sonolysis on optimum temperature with addition of 0.1 g  TiO2-rutile and TiO2-anatase, respectively. Keyword: rhodamine B, sonolysis, sol-gel
DEGRADASI SENYAWA 2,4 (DIKLOROFENOKSI) ASAM ASETAT DALAM PESTISIDA SIDAMIN 865 AS SECARA FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE Hakim, Abinul; -, Safni; Suyani, Hamzar; Sakai, Tadao
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.v3i1.20

Abstract

ABSTRACT Degradation of 2,4-Dichlorophenoxyacetic Acid (2,4-D) in Sidamin 865 AS pesticides had been carried out by photolysis with adding anatase-TiO2. Photolysis method were performed using an irradiation of UV-light at λ 365 nm, 10 W. The degradation of 20 mg/L 2,4-D without addition of anatase-TiO2 was 6.88% within 90 minutes treatment. Degradation of 20 mg/L 2,4-D by photolysis with addition of 0.1000 g anatase-TiO2, degradation was 31.55% within 90 minutes irradiation without stirring and it was 95.42% within 90 minutes irradiation with stirring. Keywords : photolysis, 2,4-dichlorophenoxyacetic acid, anatase-TiO2 
DEGRADASI ZAT WARNA NAPHTOL BLUE BLACK SECARA SONOLISIS DAN FOTOLISIS DENGAN PENAMBAHAN TIO2-ANATASE -, Safni; -, Maizatisna; -, Zulfarman; Sakai, T.
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.v1i1.66

Abstract

 ABSTRACTDegradation of naphtol blue black dye had been done by sonolysis and photolysis with adding anatase-TiO2. Sonolysis method were performed using an ultrasound with frequency 45 kHz, and photolysis using an irradiation of UV light l= 359 nm.  The optimum condition for degradation of 6 mg/L naphtol blue black by sonolysis with addition of 0.1000 g anatase-TiO2 were found at pH = 3.0 and temperature 30 ± 1°C.  Percentage of degradation at pH and temperature optimum was 65.20% within 120 minutes treatment.  Degradation of 6 mg/L naphtol blue black by photolysis with addition of 0.1000 g anatase-TiO2 was optimum at pH=3.0 and percentage of degradation was 68.72% within 120 minutes irradiation without stirring. The combine of sonolysis and photolysis method simultaneously for degradation of naphtol blue black dye by adding anatase-TiO2, achieved 92.51% degradation after 60 minutes treatment. Keywords : sonolysis, photolysis, naphtol blue black
DEGRADASI SENYAWA PERMETRINDENGAN MENGGUNAKAN TiO2-Anatase DAN ZEOLIT ALAM SECARA SONOLISIS -, Zilfa; Suyani, Hamzar; -, Safni; Jamarun, Novesar
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   
PEMBUATAN DAN KARAKTERISASI KATALIS TIO2/KARBON AKTIF DENGAN METODE SOLID STATE Septiani, Upita; Gustiana, Mega; -, Safni
Jurnal Riset Kimia Vol 9, No 1 (2015): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v9i1.257

Abstract

Composite catalyst of TiO2/Activated Carbon (TiO2/AC) had been synthesized with successfully by solid-state method. Synthesis was done by varying the addition of AC 5%, 10% and 15% of the mass of TiO2 was used. Composite catalyst was calcinated at temperature 400°C and characterized by Fourier Transform Infra-Red (FTIR), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). FTIR spectrum show that the absorption appearedin the regionof C=C at wave number 1600-1800 cm-1, that assumed from AC. From XRD we can see that with variated of AC do not given different XRD patterns significantly, crystal structure of composite catalyst is anatase. SEM images showed that AC prevented the aglomeration of TiO2 that would expand surface area and increased catalytic activity of TiO2.
DEGRADASI SENYAWA IMIDAKLOPRID SECARA ADVANCED OXIDATION PROCESSES DENGAN PENAMBAHAN TIO2-ANATASE Amelia, Fitrah; -, Safni; Suyani, Hamzar
Jurnal Riset Kimia Vol 8, No 2 (2015): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v8i2.225

Abstract

Imidacloprid is active compounds in Confidor 200 SL with  have toxical character. Degradation of Imidacloprid in Advanced Oxidation Processes (AOPs) method by using TiO2 catalyst can reduce toxic level. Advanced Oxidation Processes (AOPs) method which is used is Sonolysis, Photolysis, and Ozonolisis. The result of sonolysis, Photolysis, and Ozonolysis measured by spectrophotometer UV-Vis with λ 400-600 nm, and than optimum degradation waste after addition of catalys measured by HPLC. The result of degradation of Imidacloprid 6 mg/L using sonolysis without addition catalys is more smallest from addition catalys which degradated in 60 minute, temperature 25±1 °C. At the same time with Photolysis methode for addition catalys we get the degradation is more biggest from addition catalys. Degradation percentage of imidacloprid without addition of TiO2-anatase reach is small from with addition of TiO2. Measure using HPLC for each methode we get more than one peak in chromatogram. It means there are other coumpounds in imidacloprid solution.
Co-Authors -, Maizatisna -, Roswita -, Yefrida -, Zulfarman Abinul Hakim Adlis Santoni Admi Admi Admi Admi Aldini, Tasya Amelia, Fitrah Anggraini, Deby Anna Fadhilla Arief Yandra Putra Ariyetti Ariyetti Bhayu Gita Bhernama BUSTANUL ARIFIN Bustanul Arifin Chris Deviarny Deby Anggraini Deliza , Deliza Deliza - Deliza, Deliza Desmiati - Deswati Deswati Dheasy Gustira Dheasy Gustira Dina Nofebriani Dini Hariyati Adam Donanita, Tysa Dytta Fitria Elma Fadrita Rahman Emriadi - Eno Okta Patricia Era, Yuni Fadhilla, Anna Fardila Sari Febi Rahmi Febrina Arfi Fitra Febrianti Fitrah Amelia Fitrah Amelia fitri mairizki Fitri Mairizki, Fitri Fivi Mona Bareno Gustiana, Mega Hakim, Abinul Hamzar Suryani Hamzar Suyani Harza Dipajana Umardi Harza Dipajana Umardi Hazanita Jumiaty Hazanita Jumiaty Henny Lucida Hermansyah Aziz Hermansyah Aziz Hilfi Pardi Ibnu Irawan Imelda Imelda Imelda Imelda Jarnuzi Gunlazuardi Jihanul Khaira Jihanul Khaira K Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah Khoiriah, Khoiriah Liansari, Oktanora Mai Efdi Mai Efdi Maizatisna - Maizatisna Maizatisna Marniati Salim Matlal Fajri Alif Mechy Rezita Wahyuni Mega Gustiana Muhamad Nasir Muhamad Nasir, Muhamad Muhammad Nasir Neila Yenni Norman Ferdinal Novesar Jamarun Novesar Jamarun Novesar Jamarun Nurul Pratiwi Oktanora Liansari Olly Norita Tetra Putri Arwanda Putri Perdana Roza Putri, Reza Audina Rahmi, Febi Rahmiana Zein Refilda Refilda Refinel - Reza Audina Putri Reza Audina Putri Roswita - Roza, Putri Perdana Sakai, T. Sakai, Tadao Salmariza Sy Sumaryati Syukur Suryati Suryati , Suryati Suryati Suryati Syukri - Syukri - Syukri Arief Syukri Arief Syukri Syukri T. Sakai Tadao Sakai Tommi Hermansyah Trisna Olinovela Trisna Ollinovela Umiati Loekman Umiati Loekman Umiati Loekman Upita Septiani Vanny Yulia Safitri Vepilia Wulanda Wellia, Diana Vanda Willy Cahya Nugraha Willy Cahya Nugraha, Willy Cahya Yefrida - Yefrida Yefrida Yetria Rilda Yuli Okta Fitriyani Yulizar Yusuf Yulizar Yusuf Yuni Era Zaimi Abdullah Zaimi Abdullah Zilfa Zilfa Zulfarman - Zulfarman Zulfarman Zulkarnain Chaidir