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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Sains Materi Indonesia al Kimiya : Jurnal Ilmu Kimia dan Terapan
Anceu Murniati
Department Of Chemistry, Faculty Of Sciences And Informatics, Universitas Jenderal Achmad Yani Cimahi
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Materials Science & Nanotechnology

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SINTESIS DAN KARAKTERISASI POLIPIROL PADA ELEKTRODA KERJA KASA BAJA DENGANMETODE VOLTAMETRI SIKLIK Anceu Murniati; Buchari Buchari; Suryo Gandasasmita; Zeily Nurachman
Jurnal Sains Materi Indonesia Vol 13, No 3: JUNI 2012
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.15 KB) | DOI: 10.17146/jsmi.2012.13.3.4674

Abstract

SINTESIS DAN KARAKTERISASI POLIPIROL PADA ELEKTRODA KERJA KASA BAJA DENGANMETODE VOLTAMETRI SIKLIK. Telah dilakukan penelitian pelapisan polipirol pada elektroda kerja kasa baja denganmetode elektropolimerisasi pirol secara voltametri siklik.Tujuan penelitian inimerupakan studi awal mempelajari karakter kasa baja yang berpotensi sebagai elektroda kerja tempat elektrodeposisi film polipirol (PPy) berdasarkan literatur. Berdasarkan voltamogram siklik PPy, potensial oksidasi PPy dicapai pada rentang potensial 0V hingga 1V dibandingkan terhadap elektroda pembandingAg/AgCl pada arus puncak anodik (Ipa) mendekati 7 mA, dengan laju pindai 100 mV/detik dari larutan pirol 0,05 M dalam pelarut KCl 0,1M sebagai elektrolit pendukung. Pada rentang potensial tersebut selama proses elektropolimerisasi, selain dicapai potensial anodik PPy, terjadi persaingan dengan munculnya potensial anodik dari komponen utama kasa baja yaitu Fe, Zn, Cr atau Mn. Komponen utama yang terdapat dalam kasa baja telah dianalisis dengan X-Ray Fluorescence (XRF). Pelapisan PPy mampu menutupi permukaan kasa baja dengan pertumbuhan polimer sebanyak 10 siklus pada permukaan elektroda dengan mempelajari koefisien korelasi peningkatan arus anodik R = 0,999 dan peningkatan arus katodik R =0,991 terhadap bertambahnya jumlah siklus pada rentang potensial 0,2V hingga 0,8V. Hasil pelapisan film PPy yang menutupi permukaan kasa baja telah dikarakterisasi dengan Fourier Transform Infra Red (FT-IR).
Immobilization of Crude Polyphenol Oxidase Extracts from Apples on Polypyrrole as a Membrane for Phenol Removal Anceu Murniati; Buchari Buchari; Suryo Gandasasmita; Zeily Nurachman; Arie Hardian; Dera Triani
Jurnal Kimia Sains dan Aplikasi Vol 24, No 2 (2021): Volume 24 Issue 2 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3911.641 KB) | DOI: 10.14710/jksa.24.2.62-69

Abstract

This research aims to make a polypyrrole (PPy) membrane and crude extract of polyphenol oxidase (PPO) as a membrane of mPPy/PPO apple extracts. The membrane of PPy/PPO-apple extract has been synthesized by the electrodeposition method. The electrolyte composition consists of a mixture of 0.10-0.20 M pyrrole (Py) and 50-100% PPO apple extract, which is stable using 50 mM of phosphate buffer solution at pH 6.80-7.00 and room temperature. The electrodeposition process is used 400 mesh steel gauze anode ST-304 and carbon plate cathode. Electrodeposition is carried out at potential = 5.00-6.00 V; current = 0.02-0.25 A; the distance from both electrodes = 1.00-2.00 cm for 300-500 seconds. The results from the deposition of PPy/PPO apple extract of the anode are a membrane of mPPy/PPO-apple extract, with total enzyme activity (U) = (957,1441, 2287 and 1754) using 2.00-5.00 mM phenol as a substrate which is measured based on the UV-visible spectrophotometric method. PPy and mPPy/PPO-apple extracts were characterized by SEM and SEM-EDS. The membrane of mPPy/PPO-apple extract can be used to remove phenol in industrial wastewater samples is 50-65% with a filtration capacity of 500 mL for 2 hours.
Textile Wastewater Treatment Using Polypyrrole/Polyphenol Oxidase Membranes Anceu Murniati; Nadia Annisa Fajriana; Gilang Adi Nugraha; Restu Muchammad Ibrahim; Arie Hardian; Buchari Buchari; Suryo Gandasasmita; Zeily Nurachman
Jurnal Kimia Sains dan Aplikasi Vol 27, No 2 (2024): Volume 27 Issue 2 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.2.83-90

Abstract

Polypyrrole (PPy) is widely regarded as a useful electrode material because it has the advantages of low cost, high electrical conductivity, and thermal stability. This study aimed to synthesize PPy membranes using polyphenol oxidase (PPO) isolated from white oyster mushrooms as a biocatalyst for processing textile wastewater. The membranes were produced through the electropolymerization of pyrrole (Py) using the electrodeposition method. The raw materials comprised 0.05 M Py and crude PPO white oyster mushroom extract at 35% v/v in citrate buffer pH = 6.8. The electrolysis process was performed at 6.00 V and 1.063–1.142 A using 16.57-48.97% immobilized PPO in PPy, PPO activity of 1.640–4.160 U, and 0.35 mM phenol as a substrate. The results showed that the use of the membrane in textile wastewater with a discontinuous flow caused a decrease of pH by 14.86%, phenol by 6.80%, Chemical Oxygen Demand (COD) by 81.30%, Biological Oxygen Demand (BOD) by 78.25%, and Total Suspended Solids (TSS) by 20.65%. Meanwhile, using the sample with a continuous flow caused a decrease of pH by 23.97%, phenol by 26.09%, COD by 88.50%, BOD by 78.00%, and TSS by 65.70%. The physical performance of membrane application to textile wastewater with discontinuous (flow rate = 48.19–51.50 L/h, flux = 3191.6–3387.5 L.m-2.h-1, and permeability = 319.2–338.7 Lm-2.h-1.bar) and continuous flow (flow rate = 48.19 L/h, flux = 3191.6 Lm-2.h-1, and permeability = 319.2 Lm-2.h-1.bar) was also assessed in this study. The Scanning Electron Microscopy (SEM) image was used to assess the morphology of the membrane before and after its application.
Propellant Development Using Local Sources of Nitrate Compounds Suharnoko Suharnoko; Chairussani Abbas Sopamena; Jasmansyah Jasmansyah; Anceu Murniati; Arie Hardian
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 9, No 2 (2022): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v9i2.20878

Abstract

Currently in Indonesia, propellant research is still rarely carried out due to bureaucratic and budgetary problems. This study aimed to determine the optimum composition of propellant using local sources of nitrate compounds based on its combustion heat value and to study the effect of the composition on its combustion heat value. The propellant composition used in this study consists of oxidizing agents (local nitrate compounds), fuel (Aluminium), binder (polyester-based resin), and additive (catalyst). A bomb calorimetry method (ASTM D5865/5865-19) was used to determine the combustion heat value of the propellant. The results showed that the heat of combustion of local content nitrate compound-based propellants was high (> 1500 cal/g), adding binder to the propellant composition increases the heat of combustion. Ammonium nitrate-based propellant has the highest heat of combustion value of 3,788 cal/g. The optimum binder composition in the propellant was 33% (w/w). Based on this study, local source of nitrate compounds has potential to be used for development of propellant, especially in Indonesia. Therefore, it can encourage rocket research in Indonesia as a capital for the development of defense equipment to be less expensive.
Pembuatan Biobaterai Berbasis Ampas Kelapa dan Tomat Busuk Muhamad Abidin; Ashary Fathul Hafidh; Mia Widyaningsih; Muhammad Yusuf; Anceu Murniati
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 7, No 1 (2020): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v7i1.6511

Abstract

Indonesia merupakan negara tropis dengan produksi kelapa dan tomat yang cukup tinggi. Pada tahun 2016, Indonesia menjadi negara penghasil kelapa terbesar di dunia dengan produksi kelapa sebanyak 18,3 juta ton. Beberapa produksi pengolahan kelapa menghasilkan produk samping berupa ampas kelapa. Disisi lain, dari 916.000 ton produksi tomat pertahun terdapat 80% yang mengalami kebusukan akibat serangan hama. Kedua limbah tersebut berpotensi untuk diolah menjadi baterai ramah lingkungan. Tomat busuk telah diketahui dapat dijadikan sebagai elektrolit ramah lingkungan pada baterai dengan menghasilkan beda potensial pada baterai sebesar 1,233 Volt. Oleh karena itu, tujuan penelitian ini yaitu membuat baterai ramah lingkungan berbahan dasar ampas kelapa dan tomat busuk. Ampas kelapa ditambahkan karena emulsifying tepung kelapa secara signifikan lebih tinggi dibandingkan tepung kaya serat lainnya. Metode yang digunakan adalah mencampurkan tomat busuk dengan ampas  kelapa dengan variasi komposisi 0, 25, 50, 75 dan 100% pada masing–masing konsentrasi. Parameter yang diamati dalam penelitian ini adalah potensial, kapasitas, dan daya baterai. Hasilnya, baterai pada komposisi 0, 25, 50, 75 dan 100% menghasilkan rata-rata beda potensial masing-masing sebesar 1,27; 1,17; 1,45; 1,23; dan 0,02 Volt, arus listrik masing-masing sebesar 0,76; 1,13; 0,97; 0,24; dan 0 mA, dan daya masing-masing sebesar 0,97; 1,56; 1,43; 0,30; 0,00 miliwatt. Kondisi optimum baterai diperoleh pada baterai dengan konsentrasi 25% ampas kelapa berbanding tomat busuk dengan daya sebesar 1,56 miliwatt. Penelitian ini diharapkan dapat berkontribusi pada pengembangan baterai ramah lingkungan untuk mengurangi limbah B3, seiring dengan meningkatnya kebutuhan akan baterai di era revolusi industri 4.0.
Co-Authors Arie Hardian Ashary Fathul Hafidh Buchari Buchari Buchari Buchari Buchari Buchari Chairussani Abbas Sopamena Dera Triani Gilang Adi Nugraha Jasmansyah Jasmansyah Mia Widyaningsih Muhamad Abidin Muhammad Yusuf Nadia Annisa Fajriana Restu Muchammad Ibrahim Suharnoko Suharnoko Suryo Gandasasmita Suryo Gandasasmita Zeily Nurachman ZEILY NURACHMAN Zeily Nurachman