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All Journal Rekayasa Mesin Jurnal Fisika Unand POROS TEKNIK JST ( Jurnal Sains Terapan ) JURNAL INTEGRASI INOVTEK POLBENG Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Katalisator Jurnal TEMAPELA Jurnal Ilmu Fisika Sarwahita : Jurnal Pengabdian Kepada Masyarakat Manutech : Jurnal Teknologi Manufaktur Jurnal Teknik Mesin JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) Jurnal Riset Teknologi Pencegahan Pencemaran Industri METAL : Jurnal Sistem Mekanik dan Termal Dulang: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Dewantara
Yuli Yetri
Politeknik Negeri Padang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Journal : Jurnal Riset Teknologi Pencegahan Pencemaran Industri

 1 
Efisiensi Inhibisi Korosi Baja Lunak dalam Media Asam dengan Inhibitor Ekstrak Kulit Buah Kakao (Theobroma cacao) Yetri, Yuli; Emriadi, E; Jamarun, Novesar; Gunawarman, G
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 7 No. 2 (2016)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2016.v7.no2.p67-80

Abstract

Inhibition and adsorption properties of Theobroma cacao peel polar extract addition on corrosion inhibition efficiency of 0.3%C mild steel in hydrochloric acid solution for various exposuring time, extract concentration and working temperature were investigated using weight loss test method. Electrochemical polarization test was also conducted to confirm the effectiveness of inhibition. Infrared spectrum of the samples was also evaluated to reveal compounds of the extract which controll the inhibition process. Morphology and local composition of sample surfaces were respectively examined by scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). Thermodynamic parameters such as energy activation, enthalpy, entropy and change in the free energy were then determined using related data. The results show that the inhibition efficiency increases significantly up to 96.3% (by weight loss method) and 92.08% (Tafel) with the increase of TCPE content. The optimum efficiency is obtained at extract concentration of 2,5% for exposuring time of 768h. However, the efficiency decreases slightly with increasing working temperature in the range of 303K-323K. The polarization curve shows the inhibitor behaves as a mixed inhibitor with the dominant cathodic inhibition. The adsorption model is found to obey Langmuir adsorption isotherm. Surface condition is improved due to the adsorption and then formation of thin layer film protection in the surface of the steel. The addition of extract of cacao peels into HCl is effective to minimize corrosion attack on the mild steel.
Potential Activated Carbon of Theobroma cacao L. Shell for Pool Water Purification in Politeknik Negeri Padang Yetri, Yuli
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 12 No. 1 (2021)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2021.v12.no1.p32-38

Abstract

Research has been carried out to improve the quality of the yellow pool water. The water is used as a source of clean water for the academics of the Politeknik Negeri Padang, so it needs to be improved in accordance with the quality standards of clean water, and is suitable for daily use. The adsorption process was carried out using activated carbon of Theobroma cacao L. shells which was carbonated at 400oC for 1 hour and activated with H3PO4. Characterization of functional groups using Frontier Transform Infra Red (FTIR), and morphology of surface using Scanning Electron Microscopy (SEM). The quality of clean water standard analyzed is turbidity, Total Dissolved Solids (TDS), color, Total Suspended Solids (TSS), and Fe content. Functional group analysis exhibits that the activated carbon produced has a pattern of absorption with O-H, C-H, and C-O bond types. At the optimum condition of the activation process, a good adsorbent is absorbed in pool water purification at a flow rate of 5 mL/min with a mass of 2 grams. The analysis showed an efficiency decrease in turbidity value of 67%, Total Dissolved Solids (TDS) 71%, Color 97%, Total Suspended Solids (TSS) 86%, and Fe content 38%. Surface morphology of activated carbon showed the presence of pore cavities, and after the filtration process the cavities became saturated. This shows that there has been an absorption by activated carbon, so that the water becomes clear. Activated carbon of Theobroma cacao L.shell is very effective in the process of purifying pool water into clean water and fulfilling clean water standards, so it is suitable for are used.
Modification of Steel Surface with Addition of Cocoa Fruit Pod Extract Inhibitor Using Electrodeposition Method Yuli Yetri; Rakiman; Sukatik; Maimuzar; Silva Azaria Mahaputri
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 14 No. 2 (2023)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2023.v14.no2.p1-9

Abstract

The steel surface modification has been carried out with the addition of an inhibitor of cocoa fruit pod extract with varying concentrations of 0.5%, 1%, 1.5%, 2.0% and 2.5%. The aim is to add inhibitors to improve the appearance, and to slow down the corrosion rate. The electrodeposition method was used to form a thin film on the surface at a voltage of 3 volts for 3 minutes. Surface characterization using optical microscopy and scanning electron microscopy (SEM). X-Ray Diffraction (XRD) is used to determine the phase that occurs. The corrosion rate was calculated using the weight loss and potentiostate methods. The results of the characterization of the steel surface with the addition of 1% fruit pod extract inhibitor at the electrodeposition showed that the surface was smoother and more even and there was no porosity. XRD analysis showed that the electrodeposition results under the same conditions contained two elemental phases, namely Cu and Fe with different intensity values. The highest intensity is located at the peak of the second position of 2-Theta 44,84860 which is the peak of the Fe crystal. The lowest intensity is located at the third peak of 259.89 at the position of 2-Theta 98.9141 which is the peak of Cu. The high intensity indicates that the particle has good crystallinity. Cocoa fruit pod inhibitor is able to slow down the corrosion rate and smooth the metal surface by electrodeposition method.
Co-Authors Adriansyah Adriansyah Adriansyah Adriansyah Agustion Jufri Ahmad Amdi Zamrud Kurnia Aidil Zamri Alfian Alfian Alifur Rahman Anike Malfinora Anissa Vivia Fidela Annisa Khairiyah ARIF RAHMAN Asmed Asmed Ayu Pitri Yeni Bukhari Bukhari Bukhari Bukhari Bukhari S Bukhari S Candra Mayana, Hendri Daddy Budiman Dahyunir Dahlan Dandi Ilham Darman Dapersal Dinar Desi Mita Sari Desmarita Leni Elvis Adril Emriadi - Eri Aidio Murti Fahri Reza Fanani Fardinal Fardinal Fathir Alqodri Faula Rahmi Feidihal Feidihal Firdaus Firdaus Firdaus G Gunawarman, G Hamzah Putra Hanif Hanif Hanif Hanif Haris Haris Harri Biora Putra Hersalniar Ichlas Nur Ichlas Nur Ikhwan Nofitra Ilham Handoko Ilham Saputra Intan Rahma Yuni Isnanda Isnanda Jalal, Ramzi Januar Putra Jon Affi, Jon Jufri , Agustion Jumyetti Jumyetti Junaidi - - Junaidi Junaidi La Ode Muh Munadi Laura Nisa Tilqadri Maimuzar Maimuzar Menhendry Menhendry Menhendry Muldarisnur, Mulda Mulyadi Mulyadi Mulyadi Nandi Pinto Nasirwan Nasirwan Nofriadi Nofriadi Nofriadi Nofriadi Nota Effiandi Nota Effiandi Novesar Jamarun Oktavianus Ganumba Oong Hanwar Rahma Fikri Nuradi Rahmadhani Rahmi Hidayati Rahmi Suryani Rakiman Rakiman Rakiman Rakiman Rakiman Ravi Pratama Syael Revaldy Maiman Rina Rina Rina Rina Rino Sukma Roni Kurniawan Putra Ruzita Sumiati Saif Hadid Alkhairi Sanny Ardhy Saputra, Ilham Silva Azaria Mahaputri Silva Azaria Mahaputri Siska Angraini Rikosa Rikosa Sri Handani Sri Handani Sukatik Syukri Syukri Teguh Yaman Telaumbanua Tri Ego Wiranata Ultra Marsedi Ummi Salamah Vikra Yudha Yolanda Afza Yasmendra Rosa Yuliarman Yuliarman Yuliarman Yuliarman Yuniati, Yuniati Yusri Mura Zaimahwati, Zaimahwati Zhafiri, Syahman Zikri Hamdani Zulhendri Zulhendri