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All Journal AUSTENIT CHEMICA Jurnal Teknik Kimia Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Abdi Insani Teknomekanik International Journal of Science and Environment JURNAL REKAYASA KIMIA & LINGKUNGAN
Aprianti, Tine
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Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences

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Performance Comparison of Ground Source Heat Pump (GSHP) against Air Source Heat Pump (ASHP) for Domestic Applications: A case study in Perth, Australia Aprianti, Tine; Tan, Evan; Diu, Chan; Sprivulis, Ben; Ryan, Greg; Srinivasan, Kandadai; Chua, Hui Tong
Teknomekanik Vol. 4 No. 2 (2021): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.551 KB) | DOI: 10.24036/teknomekanik.v4i2.11272

Abstract

The goal of this research is to evaluate the efficacy and practicality of installing a ground source heat pump (GSHP) with an air source heat pump (ASHP) in a residential setting. The results of this comparison were obtained by monitoring each of the systems in two almost identical residences in Perth, Western Australia. There is an open-loop groundwater system in the previous home. Each residence has one family whose air conditioning system has its own set of operational needs. The cooling capacity supplied and coefficient of performance (COP) as a function of seasonal changes in ambient temperatures were determined using data gathered from both residences over a two-year period. For both heating and cooling, the GSHP system COP was found to be greater than that of the ASHP system. Furthermore, these two performance measures were independent of ambient circumstances in the former, but they exhibit a noticeable ambient dependent trend in the latter. The GSHP had an average COP of 4.0 for heating, regardless of external conditions, while the ASHP COP ranged from 2.0 to 3.0. Conversely, the GSHP had an average COP of 3.2 for cooling, whereas the ASHP COP ranged from 1.4 to 2.9. It is found that GSHPs result in significant operational cost reductions and a significant decrease in greenhouse gas emissions when a borewell is part of a home.
Experimental study of gas adsorption using high-performance activated carbon: Propane adsorption isotherm Aprianti, Tine; Hapsari, Harrini Mutiara; Permata, Debby Yulinar; Aprilyanti, Selvia; Sobey, Justin; Pham, Kallan; Kandadai, Srinivasan; Chua, Hui Tong
Teknomekanik Vol. 7 No. 1 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i1.28672

Abstract

Activated carbon is widely used for its diverse adsorptive abilities, with a vast range of current and emerging uses. This study developed a data set for high-performing activated carbon, its adsorption abilities with differing adsorbents, and an understanding of what deviations are present compared to the widely used adsorption models. This study included the construction of Tóth isotherms in varying conditions. Building a strong isotherm correlation is desired, with an understanding of the relationship between the pores of the activated carbon sample, operating parameters, and the adsorbent. The present data could complement efforts in designing adsorbed natural gas storage systems. Experimental data was collected using a Constant Volume Variable Pressure (CVVP) apparatus, consisting of a temperature-regulated vessel containing the activated carbon sample dosed with varying adsorbents through a controlled dosing vessel. Analysis of the derived data gave a well-fitted Tóth adsorption isotherm, giving the maximum specific adsorption capacity of the activated carbon to be 2.28 g of propane per gram of activated carbon with a standard error of regression
PENGOLAHAN AIR MENJADI AIR MINUM DENGAN ALAT BERTEKNOLOGI MEMBRAN ULTRAFILTRASI UNTUK SEKOLAH ISLAM TERPADU IZZATUNA PUTRI PALEMBANG SUMATERA SELATAN Aprianti, Tine; Said, Muhammad; Bahrin, David; Selpiana, Selpiana
Jurnal Abdi Insani Vol 12 No 6 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i6.2566

Abstract

Kegiatan pengabdian kepada masyarakat yang dilakukan oleh tim Fakultas Teknik Universitas Sriwijaya dilaksanakan dengan mengolah air menjadi air minum dengan alat berteknologi membran ultrafiltrasi, kegiatan ini diharapkan dapat membantu khalayak sasaran untuk memenuhi kebutuhan air minum layak konsumsi yang dapat juga dijadikan peluang untuk wirausaha air minum isi ulang. Kegiatan Pengabdian kepada Masyarakat ini dilaksanakan di Sekolah Islam Terpadu Izzatuna Putri Palembang, kegiatan ini bertujuan untuk memberi manfaat yang signifikan dan turut membantu dalam meningkatkan kesehatan dan kesejahteraan khalayak sasaran. Untuk mengevaluasi hasil kegiatan, pada akhir kegiatan disebarkan kuesioner sebanyak 40 (empat puluh) lembar ke khalayak sasaran yang mengikuti kegiatan ini. Dari data isian kuesioner yang disebarkan, 80% khalayak sasaran menilai bahwa kegiatan ini sangat bermanfaat, hal ini membuktikan bahwa khalayak sasaran menganggap kegiatan ini sangat bermanfaat.
PENGOLAHAN AIR MENJADI AIR BERSIH DAN AIR MINUM DENGAN TEKNOLOGI MEMBRAN ULTRAFILTRASI DI KELURAHAN MUARA ENIM, KABUPATEN MUARA ENIM, SUMATERA SELATAN Aprianti, Tine; Vidian, Fajri; Aprianti, Sisnayati
Jurnal Abdi Insani Vol 12 No 2 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i2.2178

Abstract

Sistem distribusi air bersih yang ada di Kecamatan Muara Enim pada saat ini belum menjangkau seluruh warga di kecamatan ini. Pelayanan PDAM Lematang Enim baru melayani sekitar 50% dari jumlah penduduk Kecamatan Muara Enim. Hal ini disebabkan oleh masih lambatnya pengembangan sistem distribusi air bersih di kecamatan ini dan rendahnya jam operasi layanan yang mengakibatkan minimnya waktu distribusi air bersih ke pelanggan yang rata-rata hanya mencapai ± 10 jam/hari. Pada Kegiatan Pengabdian pada Masyarakat yang akan dilaksanakan ini berfokus pada lokasi Kelurahan Muara Enim yang sebagian besar warganya belum mendapatkan layanan PDAM yang mencukupi dan terpaksa mengandalkan air sumur atau air sungai. Kegiatan ini diharapkan dapat membantu masyarakat sasaran untuk memenuhi kebutuhan air minum layak konsumsi yang dapat juga dijadikan peluang untuk wirausaha air minum isi ulang. Program ini diawali dengan penyuluhan tentang air minum layak konsumsi sesuai standar kesehatan, dilanjutkan dengan perakitan alat pengolah air menggunakan teknologi membran ultrafiltrasi. Setelah itu, mitra sasaran dilatih mengoperasikan alat agar dapat memanfaatkannya secara optimal. Kegiatan berikutnya adalah sosialisasi kepada masyarakat agar mereka memahami fungsi alat tersebut dan merasakan manfaatnya bagi kesehatan. Program ditutup dengan pembagian kuesioner kepada peserta sosialisasi untuk memperoleh umpan balik mengenai efektivitas kegiatan. Dari data isian kuesioner yang disebarkan, 80% masyarakat Kelurahan Muara Enim menilai bahwa kegiatan ini sangat bermanfaat, hal ini membuktikan bahwa masyarakat sasaran menilai kegiatan ini sangat bermanfaat.
Pengolahan Limbah Logam Berat Kromium Hexavalen Menggunakan Reagen Fenton dan Adsorben Keramik Zeolit Agustina, Tuty Emilia; Faizal, Muhammad; Aprianti, Tine; Teguh, Dedi; Rif'at, Aditya M; Putra, Imam Gunawan; Prayesi, Mutiara Rizki; Fitrializa, Ulfa
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 1 (2018): Jurnal Rekayasa Kimia & Lingkungan (June, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i1.10109

Abstract

Kromium diketahui sebagai salah satu polutan beracun yang menyebabkan masalah lingkungan dan kesehatan masyarakat. Kromium Heksavalen Cr(VI) merupakan logam berat, dimana dalam konsentrasi yang kecil dapat menghasilkan tingkat keracunan yang tinggi pada makhluk hidup. Jika senyawa kromium (VI) terbuang ke lingkungan dan masuk ke dalam tubuh makhluk hidup maka akan sangat berbahaya, sehingga penting untuk mengolah limbah tersebut. Penelitian ini difokuskan pada proses pengolahan Cr(VI) dengan metode kombinasi yaitu secara kimia dan secara fisika. Penelitian ini bertujuan untuk mengolah air limbah yang mengandung Cr(VI) menggunakan reagen Fenton yang dilanjutkan adsorpsi menggunakan adsorben berbahan dasar zeolit dan tanah liat yang dibentuk menjadi keramik. Air limbah yang mengandung Cr(VI) dikontakkan dalam reaktor berpengaduk sehingga terjadi reaksi reduksi oksidasi, selanjutnya air limbah ini dilewatkan ke dalam kolom adsorpsi yang berisi adsorben keramik zeolit. Kondisi terbaik dari pengolahan air limbah yang mengandung Cr(VI) dengan metode kombinasi ini dicapai pada konsentrasi limbah krom 200 ppm, rasio molar reagen Fenton 1:30, dan pH 6. Dimana persentase maksimum penurunan Cr(VI) dengan proses Fenton sebesar 30,15% dan dilanjutkan dengan adsorpsi sehingga penurunan Cr(VI) total mencapai 99,99%. Hal ini menunjukkan bahwa pengolahan limbah logam berat kromium dengan menggunakan reagen Fenton dilanjutkan adsorpsi menggunakan adsorben keramik zeolit mampu menurunkan kadar Cr(VI) pada limbah cair mencapai 0,0033 ppm dari baku mutu yaitu 0,1 ppm, sehingga hasil penelitian ini telah memenuhi baku mutu lingkungan
SOCIALIZATION OF WOOD CHARCOAL GASIFICATION USING DOWNDRAFT GASIFIER Vidian, Fajri; Fitriani, Heni; Arief, Taufik; Alian, Helmy; Hadi, Qomarul; Amri, Julil; Aprianti, Tine; Ramadhan, Daud; Maulana, Gilang Rifki; Manurung, Samuel Takkas; Siregar, Edwin Fernando; Ramadhan, Rizky Fajar; Repaldo, Repaldo; Muslim, Muhammad; Ramadhoni, Muhammad Fathur Arya; Sarie, Tri Mulyani; Aulia, Nia
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 9 No. 1 (2025): MARET
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v9i1.2632

Abstract

The reduction in fossil energy requires alternative energy that can be renewed. Wood charcoal is one of the alternative sources that can be renewed. Wood charcoal is used to produce energy through direct combustion until now, such as in Pulau Semambu Village, Ogan Ilir, and South Sumatra. The Gasification Method is one technique for converting wood charcoal into gas fuel. This method is not widely known by the community, especially the Pulau Semambu Village, Ogan Ilir people. This Community Service aims to socialize wood charcoal gasification to produce gas fuel in the Pulau Semambu Village Community, South Sumatra. Community service is carried out through Presentations, Q&As, discussions, and demonstrations. The demonstration results showed that the Pulau Semambu Community was very interested in the material provided and the demonstration of making gas fuel from wood charcoal with a gasification process. The demonstration shows that 3 kg of fuel can produce gas for about 50 minutes. The gas fuel formed is identified by the combustion of the resulting gas, which makes the flame.
Effect of temperature and time on alkaline pretreatment and alkaline microwave-assisted pretreatment on banana stem composition Anggriani, Ulfa Meila; Novia, Novia; Melwita, Elda; Aprianti, Tine
CHEMICA: Jurnal Teknik Kimia Vol. 10 No. 3 (2023): December 2023 [Available online since December 26, 2023]
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i3.27329

Abstract

Banana stem waste is a source of lignocellulose biomass with a high cellulose content and abundant availability in Indonesia. In this work, we investigated the effect of time and temperature on the decrease in rate of lignin in lignocellulose. Banana stem waste was pretreated with alkaline and alkaline microwave-assisted so that the percentage of lignin contained in lignocellulose biomass were reduced and the percentage of cellulose were increased. In alkaline pretreatment, 6% KOH is added to lignocellulose and heated to a hotplate during contact time variation (10, 20, 30, 40, and 50 min) with temperature variations (55, 65, 75, 85, and 95 oC). In pretreatment, an alkaline microwave–assisted 6% KOH solution was added to lignocellulose and heated for 20 min with temperature variations (55, 65, 75, 85, and 95 oC), then was put into a microwave that has a wave power of 360 Hz with variations in contact time (55, 65, 75, 85 and 95 min). After pretreatment, the sample was analyzed using the Chesson method to determine the percentage of cellulose, hemicellulose and lignin. Analysis showed that alkaline and microwave-assisted alkaline pretreatments effectively reduce the lignin percentage and increase the cellulose percentage in lignocellulose. The most remarkable performance in both pretreatments was obtained when working at 95 oC with a contact time of 50 min. Based on process optimization, it was concluded that microwave-assisted alkaline pretreatment reduced the percentage of lignin more and increased the percentage of cellulose compared to alkaline KOH pretreatment, which decreased the rate of lignin by 43.26% and increased the rate of cellulose by 60.68%. For further research, it can be continued to the next process, namely hydrolysis to produce glucose as a raw material for the bioethanol production process.
PEMBUATAN MESIN PENGUPAS DAN PEMERAS TEBU: PEMBUATAN MESIN PENGUPAS DAN PEMERAS TEBU Veranika, Rita Maria; Madagaskar, Madagaskar; Aprilyanti, Selvia; Aprianti, Tine
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4600

Abstract

Sugarcane is one of Indonesia's agricultural commodities which is quite large in production, sugarcane processing in Indonesia is usually used as sugar and flavoring, but sugar cane is also used by the community as a raw material for beverages, namely sugarcane ice. Sugarcane grinding machines or sugarcane squeezer machines are using for the process of separating sugarcane juice from sugarcane stem fiber, with the help of a sugarcane squeezer machine it will produce a lot of sugarcane juice, and only requires a short working time. The use of a sugar cane squeezer machine for producing sugar and making ice cane with a small-scale machine, so that it does not require space and a complicated process, this machine is very suitable for small and medium scale sugarcane processing industry. The purpose of this research is to design and manufacture a sugarcane squeezer machine using a combustion engine. The implementation method in the manufacture of this machine uses a propulsion system including combustion motors, pulleys, v-belts, gears, shafts, pegs, rollers and bearings. The results obtained from the design and manufacture of this sugarcane squeezer machine are that the energy and time that have been used are more efficient and the sugarcane processing is faster than manually. The design specifications of the tool are 0.5Hp engine capacity, 220 volt voltage and 2500 rpm rotation. Testing of the sugarcane juice machine is carried out to find out the results of the design can function according to the expected design
Mass Optimization of Acid-Activated and Acid-Thermal-Activated Bentonite in Heavy Metal Adsorption Nafisah Koenang, Jilan; Emilia Agustina , Tuty; Aprianti, Tine
International Journal of Science and Environment (IJSE) Vol. 5 No. 4 (2025): November 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i4.279

Abstract

Heavy metal pollution such as Cu, Fe, and Pb is a serious environmental issue because it is toxic and can harm living things and the surrounding environment. Adsorption is a potential method to address heavy metal problems with bentonite as an adsorbent. Before use, natural bentonite will be activated first. Activation aims to increase the surface area, porosity, and number of active sites on the bentonite surface. This study aims to determine the optimum adsorbent mass in heavy metal adsorption and compare the best activation method using acid-activated bentonite (H₂SO₄ 1.2M) and acid-thermal activated bentonite, namely H₂SO₄ 1.2M and continued heating using a 300ᵒC furnace for 6 hours. In addition, comparing changes in the surface characteristics of acid bentonite and acid-thermal bentonite through characterization using SEM analysis. Adsorption was carried out using a single component synthetic solution containing Cu, Fe, and Pb metals with variations in adsorbent mass of 1, 2, 3, 4, and 5 grams. The results show that acid bentonite has an open and porous surface structure and has many active sites. In acid-thermal bentonite, the silicate structure becomes more stable despite slight damage to the Si structure and at a higher mass makes acid-thermal bentonite higher than acid bentonite. The optimum heavy metal degradation efficiency is achieved at an adsorbent mass of 1 gram with acid-activated bentonite which achieves a metal degradation efficiency of 45% Cu, 100% Fe and 88%.
Co-Authors Amri, Julil Anggriani, Ulfa Meila Aulia, Nia Chua, Hui Tong David Bahrin Diu, Chan Emilia Agustina , Tuty Fajri Vidian Fitrializa, Ulfa Hapsari, Harrini Mutiara Helmy Alian Heni Fitriani Kandadai, Srinivasan Madagaskar, Madagaskar Manurung, Samuel Takkas Maulana, Gilang Rifki Melwita, Elda Muhammad Faizal Muhammad Muslim, Muhammad MUHAMMAD SAID Nafisah Koenang, Jilan Novia Novia Permata, Debby Yulinar Pham, Kallan Prayesi, Mutiara Rizki Putra, Imam Gunawan Qomarul Hadi Ramadhan, Daud Ramadhan, Rizky Fajar Ramadhoni, Muhammad Fathur Arya Repaldo, Repaldo Rif'at, Aditya M Rita Maria Veranika, Rita Maria Ryan, Greg Sarie, Tri Mulyani Selpiana, Selpiana Selvia Aprilyanti, Selvia Siregar, Edwin Fernando Sisnayati Sisnayati Sobey, Justin Sprivulis, Ben Srinivasan, Kandadai Tan, Evan Taufik Arief Teguh, Dedi Tuty Emilia Agustina