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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Jurnal Natur Indonesia Jurnal Riset Kimia Jurnal Litbang Industri Jurnal Zarah Chimica et Natura Acta Indonesian Journal of Chemistry Akta Kimia Indonesia Jurnal Ecolab Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks REACTOR : Journal of Research On Chemistry And Engineering IJCR (Indonesian Journal of Chemical Research) International Journal of Humanities Education and Social Sciences Jurnal Litbang Industri Journal Of Research and Education Chemistry (JREC) Jurnal Katalisator Jurnal Kimia Unand
Zilfa Zilfa
Andalas University
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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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   
PENENTUAN TINGKAT KANDUNGAN AMONIAK, NITRIT, DAN NITRAT PADA REMBESAN SAMPAH LOKASI PEMBUANGAN AKHIR (LPA) AIR DINGIN KOTA PADANG - Zilfa; - Zulfarman; - Hariyanti
Jurnal Riset Kimia Vol. 5 No. 2 (2012): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i2.223

Abstract

Determination of amoniac, nitrite, and nitrate content in seepage waste water in landfill area in cold water, Padang have been done using spectrophotometric method. Sample took from sequencing ofseepage waste water treatment process. The results showed that the ammonia, nitrite, and nitrate content in seepage waste water were 137.612 to 400.298 mg/ L, 0.34 to 0.756 mg/ L, and 0.682 to5.842 mg/ L, respectively. The differences of ammonia, nitrite, and nitrate content in seepage waste water and ammonia and nitrite contents tend to decrease while the nitrate content tends to increase. The rate of ammonia degradation in water seepage was different for each sampling place where the rate of degradation was greatest in seepage water waste treatment II. This degradation is expected to reduce the level of pollution on the environment.
PENJERNIHAN AIR SUMUR MENUJU AIR LAYAK MINUM DENGAN METODA LAPISAN MULTI MEDIA ( LMM ) Neneng Swesty; Rahmiana Zein; Z. Zilfa
Jurnal Riset Kimia Vol. 10 No. 1 (2019): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.297

Abstract

The Multi Soil layering (MSL) system is a liquid waste treatment method with the use of soil as the main medium and the organic material formed in brick and arranged in layers with a homogeneous zeolite layer. The MSL system is made of acrylic (50 x 15 x 50) cm containing a brick (4 x 9 x 15) cm and (4 x 5 x 15) cm of volcanic soil mixture as the main medium mixed with charcoal, rice husk, and iron powder (70 : 10 : 10 : 5)%, permiable layer is used zeolite (2-3) mm. The sample came from the well water of one of villager at Jati, Padang. Efficiency of SML system for aeration process on turbidity parameter with flow rate variation of 2, 4, 6, 8 mL/min reach 99,8 %, for non aeration process efficiency of turbidity decrease 88,14 %. While for the flow rate of 10, 20, 40, 80 mL/min, the efficiency of decrease for aeration at parameters Mn 66,44 %, nitrite 59,74 %, nitrate 58,34 %, turbidity 54,63 %, while in non aeration efficiency decrease turbidity reach 44,04 %, Mn 47,26 %, nitrite 49,74 %, nitrate 45,57 %. Of all efficiency values decreasing all parameters already complied drinking water quality standard according to Permenkes RI No. 492/Menkes/Per/IV/2010.
Adsorpsi Asam Humat pada Zeolit Alam yang Dimodifikasi dengan TiO2 Upita Septiani; Fiska Julian Tasari; Zilfa Zilfa
Jurnal Riset Kimia Vol. 11 No. 1 (2020): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v11i1.344

Abstract

This research modified natural zeolite with TiO2 synthesized by the sol-gel process which was applied as a humic acid adsorbent. The purpose of this study was to coat natural zeolites with TiO2 to increase the adsorption capacity of natural zeolites as humic acid adsorbents. The natural zeolite powders were obtained from Kabupaten Solok, West Sumatra, based on X-ray Fluorescence (XRF) analysis, the ratio of silica/alumina (Si/Al) was 4.35, indicating that natural zeolite was clinoptilolite zeolite. Scanning Electron Microscopy (SEM) analysis showed natural zeolite has a rough surface with closed pores while zeolite coated with TiO2 (zeolite/TiO2) has a homogeneous, smooth surface with open pore. The results of the Energy Dispersive X-Ray Spectroscopy (EDS) analysis showed that the level of TiO2 was 7.1%, this result showed that TiO2 has been coated on the surface of the zeolite. Natural zeolite and zeolite/TiO2 were applied as humic acid adsorbents. Maximum adsorption capacity of natural zeolites and zeolites/TiO2 were 0.2787 mg/g and 1.199 mg/g, respectively.
Pengaruh HCl terhadap Aktifasi Zeolit Alam Clipnotilolit-Ca Pada Penyerapan Pb(II) Zilfa Zilfa; Upita Septiani; Mirawati Mirawati
Jurnal Riset Kimia Vol. 11 No. 2 (2020): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v11i2.355

Abstract

Research about the effect of HCl on the activation of clinoptilolite-Ca natural zeolite on Pb(II) absorption has been done. The purpose of this study is to determine the capacity of zeolite clinoptilolite-Ca activation by HCl can be used as an adsorbent. For analysis of the adsorption we used AAS whereas for zeolite characterization were used XRF and XRD. The analysis parameters are the effect of HCl concentration, particle size, adsorbent mass, contact time, total solution volume, concentration of Pb(II), and PH solution. These parameters were studied to determine the optimum conditions in the adsorption process. The optimum conditions absorption of Pb(II) for the acid activation process shows that the zeolite clinoptilolite-Ca can be used as an absorbent. The adsorption results show that the value of Pb(II) capacity in the activation process with HCl of 0.2 N produces adsorption capacity of 0.0821 mg/g, for particle size 125 µm produces and adsorption capacity 0.0821 mg/g, for an adsorbent mass of 0.1 g produces an adsorption capacity of 0.5110 mg/g, for contact time of 10 minutes is 0.5662 mg/g, for a metal solution volume of 12.5 mL is 0.5493 mg/g, for the concentration of metal ion solution 40 mg/L is 2.608 mg/g, and at pH = 7 is 4.923 mg/g. The output of several parameters can be concluded that the adsorption capacity of zeolite clinoptilolite-Ca to the absorption of Pb(II) is 4.923 mg/g. Characterization of zeolite adsorbents with XRF and XRD shows that the zeolite used is zeolite clinoptilolite-Ca.   
Penggunaan ZnO/Zeolit Sebagai Katalis Dalam Degradasi Tartrazin Secara Ozonolisis Zilfa Zilfa; Safni Safni; Febi Rahmi
Jurnal Riset Kimia Vol. 12 No. 1 (2021): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i1.387

Abstract

An investigation on modification of natural zeolite with ZnO for the degradation of tartrazine. In this study, ZnO as a semiconductor is modified into a natural zeolite as support to form ZnO/zeolite that can increase the efficiency degradation of tartrazine. Further, the formed catalyst was added to tartrazine by determining the variation in ozonolysis time, the amount of addition of the catalyst, and the addition of a catalyst time. The results of degradation were determined by UV-Vis spectrophotometer at 424 nm. The result showed that the percentage of degradation obtained on each catalyst in the degradation. The resulted percent degradation of 20 ml of tartrazine at concentration of 15 mg/L using 20 mg ZnO/zeolite was 56.80%, while using 0.77 mg ZnO was 42.25%, and with the addition of 19.23 mg of Zeolite was 31.18%, all of that condition was proceeded by 40 minutes of ozonolysis. Thus, the result indicates that the ZnO/zeolite catalyst can increase percentages of tartrazine degradation by ozonolysis. It is known that the catalyst ZnO/zeolite is very effective in increasing the degradation of tartrazine. Analysis of tartrazine compounds using fourier-transform infrared spectroscopy (FTIR) after degradation changes in wavenumber indicates that there is a breaking of the bonds of tartrazine compounds. Characterization of ZnO/zeolite catalyst using FTIR, X-Ray diffraction (XRD) and scanning electron microscope (SEM), in each spectrum there was no shift, indicating that there is no change in ZnO/zeolite structure
Aplikasi teknik biosorpsi menggunakan biosorben kulit batang sagu, arang aktif kulit buah kakao dan cangkang langkitang untuk mengolah air limbah CPO Rahmiana Zein; Imran Nazar; Zilfa Zilfa
Jurnal Litbang Industri Vol 10, No 1 (2020)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v10i1.5946.47-59

Abstract

Penelitian ini dilakukan untuk mengetahui kemampuan biosorben kulit batang sagu, arang aktif kulit buah kakao dan cangkang langkitang dalam mengolah air limbah CPO. Penelitian dilakukan pada massa dan laju alir terbaik untuk pengolahan air limbah CPO dengan sistem aliran kontinu dan sistem aliran siklus serta menentukan kapasitas biosorpsi biosorben. Pengujian air limbah dan air olahan adalah pH, TSS, BOD dan COD. Analisis biosorben dilakukan untuk melihat gugus fungsi dengan FTIR, morfologi permukaan dengan SEM dan komposisi kimia biosorben dengan XRF. Massa dan laju alir terbaik masing-masing biosorben yang didapatkan dari percobaan yaitu 100 gram dan 100 mL/menit. Penelitian dengan sistem kontinu didapatkan hasil air olahan dengan nilai pH 6 s.d 7 dan persentase penurunan nilai TSS 99,53%; BOD 57,23% dan COD 90,85%. Penelitian dengan sistem kontinu dan siklus sebanyak 3 siklus didapatkan hasil air olahan dengan pH 6 s.d 7 dan persentase penurunan nilai TSS 99,66%; BOD 81,69% dan COD 95,90%. Hasil penelitian uji kinerja sistem, biosorben mampu mengolah air limbah sebanyak 12,5 L. Analisis biosorben menggunakan SEM, FTIR dan XRF didapatkan hasil yang berbeda antara biosorben sebelum dan sesudah kontak dengan air limbah yang menunjukan biosorben dan air limbah terjadi interaksi (biosorpsi).
Synthesis of Polystyrene Sulfonate and Its Characterization as a Polymer Electrolyte Membrane Emil Salim; Afrizal Afrizal; Zilfadli Zilfadli
Akta Kimia Indonesia Vol 6, No 2 (2021)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v6i2.10916

Abstract

This study aims to synthesize polystyrene sulfonate (PSS) from polystyrene (PS) isolated from waste styrofoam. Sulfonation reaction of polystyrene was conducted using acetyl sulfonate as sulfonating agents with variation times and temperatures. The sulfonated products were characterized using FT-IR spectrophotometer, degree of sulfonation, cation exchange capacity, water uptake and thermal stability. The FTIR spectrums show vibration of O-H streching at wave number 3300-3400 cm-1, S=O streching at the wave number 1050-1200 cm-1 which indicates the presence of sulfonate groups. Sulfonation reaction at 40oC for 2 hours (SPS-40-2) gives the highest degree of sulfonation, cation exchange capacity, water uptake with values 1,960%, 0.1880 meq/gr, 9.04% respectively. Thermal gravimetry analysis shows that polystyrene sulfonate has better thermal stability than polystyrene.
Budidaya Ikan Lele untuk Menunjang Kelancaran Biaya Operasional TPQ dan RTQ Raudhatul Adzkia Jorong Dalam Koto Kabupaten Agam Refilda Refilda; Rahmiana Zein; Yefrida Yefrida; Zilfa Zilfa; Upita Septiani; Syukri Syukri; Diana Vanda Wellia; Syafrizayanti Syafrizayanti; Matlal Fajri Alif; Elida Mardiah; Refinel Refinel; Admi Admi; Emil Salim; Fitratul Ilahi; Dwi Syukur Phameswari
Warta Pengabdian Andalas Vol 28 No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.28.3.206-214.2021

Abstract

The Qur'an Education Park (TPQ) and Tahzhul Qur'an House (RTQ) of the Raudhatul Adzkia Jorong Dalam Koto Nagari Koto Tangah, Tilatang Kamang, and District of Agam have been launched since 2015. The students who study here are free of charge. The operational costs of education and the honorarium for educators come from donations from their community and some nomads. However, this contribution is not sufficient for operational costs. The Department of Chemistry's community service team, Andalas University, collaborated with partners to start a business to solve this problem. The business was carried out using vacant land owned by partners for catfish cultivation. Surveys, program socialization and assisting activities were carried out online using virtual media, while Partners carried out the implementation in the field. Activities carried out were pond preparation, the release of catfish seeds, feeding, sorting, maintenance, harvesting, and marketing cultivated catfish. Based on the evaluation, 5000 seedlings from the released catfish developed well. About 99% of catfish typically growth to a large and even size, while the other 1% growth relatively slowly. Harvested catfish were sold for IDR 18,000/kg for wet fish and IDR 100,000/kg for dried fish. This business has been carried out sustainably by partners, and the profits have been used to support the operational costs of TPQ and RTQ Raudhatul Adzkia.
DEGRADASI SENYAWA PERMETRIN DENGAN MENGGUNAKAN ZEOLIT ALAM TERPILAR TiO2-ANATASE SECARA SONOLISIS Zilfa Zilfa; Hamzar Suyani; Safni Safni; Novesar Jamarun
Jurnal Ecolab Vol 5, No 1 (2011): Jurnal Ecolab
Publisher : Pusat Standardisasi Instrumen Kualitas Lingkungan Hidup Laboratorium Lingkungan (P3KLL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jklh.2011.5.1.35-43

Abstract

Permetrin merupakan golongan insektisida piretroid sintetik yang kurang toksik bagi mamalia tapi sangat toksik bagi ikan, serangga dan mikroorganisme air Penelitian tentang degradasi senyawa permetrin telah dilakukan dengan menggunakan zeolit alam terpilar TiO2-anatase secara sonolisis pada beberapa kondisi perlakuan.. Degradasi dilakukan secara sonolisis menggunakan gelombang ultrasonik dengan frekuensi 45 KHz. Sampel yang digunakan adalah permetrin 96,1%. Sedangkan zeolit alam terpilar TiO2-anatase digunakan sebagai katalis untuk membantu degradasi secara cepat dan efisien. Hasil iradiasi dianalisis dengan menggunakan spektrofotometer UV pada panjang gelombang 272 nm. Degradasi permetrin 20mg/L pada suhu 40oC dan waktu iradiasi 120 menit, tanpa penambahan zeolit alam terpilar TiO2- anatase mencapai 22,23%. Sedangkan degradasi permetrin 20 mg/L pada suhu 40oC dan waktu iradiasi 75 menit dengan penambahan 50 mg zeolit alam terpilar TiO2- anatase menghasilkan 81,10 %.
Co-Authors - Hariyanti - Zulfarman Adlis Santoni Admi Admi Afrizal Afrizal Aju Deska Aldini, Tasya Alsa Sepia Putri Amanda, Selya Anggreini Putri, Mitha Aufa Zakiyuda Bustanul Arifin BUSTANUL ARIFIN Deliza , Deliza Deliza, Deliza Desra Welly Deswati Deswati Dwi Syukur Phameswari Dwitami, Aisyah Rahma Elida Mardiah Emil Salim Emriadi - Febi Rahmi Fiska Julian Tasari Fivi Mona Bareno Gumilang, Yuza Ahmad Hamzar Suyani Hariyanti, - Hermansyah Aziz Hermansyah Aziz Hevira, Linda Heysha, Fheiza Ilahi, Fitratul Imelda Imelda Imran Nazar Izzah, Annisaul Mai Efdi Mai Efdi Matlal Fajri Alif Megita Febiola Mia Yeliandri Mirawati Mirawati Mirawati Mirawati Muhammad Hafiz Reza Neneng Swesty Norman Ferdinal Novesar Jamarun Novesar Jamarun Novesar Jamarun Nurhasni Nurhasni Nurul Afifah Nurul Annisyah Olly Norita Tetra Putri Julanda Ardica Putri Ramadhani Putri Ramadhani, Putri Putri, Anggi Nabila Rahmayeni Rahmayeni Rahmi, Febi Rahmiana Zein Raihan Hanif Aulia Refilda Refilda Refinel - Ria Elvi Susanti Risa Oktaviani Safni Safni Safni Salim, Emil Salsa Nurul Fadhilah Siti Zahara Sumaryati Syukur Suryati Suryati Suryati Swesty, Neneng Syafrizayanti Syafrizayanti Syahril Syahril Syiffa Fauzia Syukri Syukri Arief Syukri Arief Syukri Syukri Syukri Syukri Tasari, Fiska Julian Teti Nurhayatul Rahmi Tommi Hermansyah Upita Septiani Upita Septiani Vivi Sisca Vivi Sisca Wellia, Diana Vanda Wilda Putri Suhada Yefrida - Yefrida Yefrida Yetria Rilda Yulizar Yusuf Yulizar Yusuf Zulfarman, - Zulkarnain Chaidir