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Dewanto, Hizkia Alpha
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APLIKASI TEKNOLOGI FILTER AIR DARI LIMBAH RUMAH TANGGA DI KAWASAN TRANSAD KM 8 KELURAHAN KARANG JOANG BALIKPAPAN UTARA Triana, Yunita; Dewanto, Hizkia Alpha; Laksono, Andromeda Dwi; Miles, Austin; Marippi, Alan; Lesmana, Muhammad Zidan; Rungsa, Yudianto; Batatta, Denada Yudhistira; Fadhilah, Hana’; Azhary, Kartika Nerissa; Ali, Shodikin; Ismail, Andi Idhil
PIKAT Jurnal Pengabdian Kepada Masyarakat ITK Vol. 5 No. 2 (2024): PIKAT : Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Institut Teknologi Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/pikat.v5i2.1200

Abstract

Kelurahan Karang Joang merupakan salah satu kelurahan yang berada di Kecamatan Balikpapan Utara dengan luas wilayah 93.09 km2, dengan jumlah penduduk sebanyak 31.276 jiwa. Salah satu daerah kelurahan Karang Joang adalah Jl. Kesatriaan (Transad) KM. 8. Salah satu permasalahan di kawasan Transad adalah air sumur bor yang berbau dan tinggi akan kandungan zat besi dan juga banyaknya limbah dari perkebunan kelapa sawit milik warga. Untuk mengatasi permasalahan tentang air sumur bor yang berbau dan limbah kelapa sawit yang dapat mencemari lingkungan ini, maka dilakukan pembuatan teknologi filter air dengan memanfaatkan limbah kelapa sawit berupa cangkang dan serabut kelapa sebagai media filter dan menggunakan limbah rumah tangga berupa galon bekas sebagai wadah teknologi filter air dengan melalui beberapa tahap. Pada tahap persiapan dilakukan dengan melakukan survey dan observasi ke kawasan Transad KM.8 Karang Joang. Pada tahap pelaksanaan dilakukan dengan beberapa kegiatan seperti mempersiapkan alat dan bahan, pelaksanaan dilakukan beberapa kegiatan seperti mempersiapkan alat dan bahan, pelaksanaan tahapan pembuatan teknologi filter air dan melakukan sosialisasi terkait pemanfaatan kegunaan bahan dan cara kerja Filter air. Terakhir, tahap evaluasi dengan melakukan pemantauan secara berkala dan pemeriksaan visual komponen filter air selama 4 minggu. Adapun pengujian kandungan kadar besi hasil filter air ini, yaitu sebesar 0,5 mg.
Pengaruh Rasio Penggunaan Pasir Baru dengan Pasir Bekas Terhadap Kadar Abu / Lost On Ignation (LOI) dan Kekuatan Tarik Pasir pada Cetakan Pasir Kering Fiyana, Rima Himmaniyatul; Lubis, Muthia Putri Darsini; Dewanto, Hizkia Alpha
SPECTA Journal of Technology Vol. 7 No. 1 (2023): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.757 KB) | DOI: 10.35718/specta.v7i1.241

Abstract

Sampai saat ini teknik pengecoran logam masih sering dipakai oleh industri kecil maupun besar dalam pembuatan berbagai macam produk. Salah satu metode pengecoran yaitu cetakan pasir, dimana cetakan berupa pasir diberikan pengikat. Pasir silika memiliki mineral kuarsa dengan kadar SiO2 lebih dari 95% yang memiliki ketahanan terhadap temperatur tinggi. Tingginya biaya pembelian pasir baru dan banyaknya limbah pasir bekas pengecoran yang tidak dipakai mengharuskan adanya biaya pembuangan pasir bekas. Salah satu pengoptimalan biaya produksi dengan menggunakan kembali pasir bekas yang telah dicampurkan dengan pasir baru. Berdasarkan American Foundry Society (AFS), cetakan pasir harus memenuhi persyaratan sebelum dilakukan pengecoran dengan melakukan beberapa pengujian pada cetakan kering yaitu uji kadar abu / lost on ignation (LOI) dan uji kekuatan tarik pasir. Hasil penelitian pengujian kadar abu (LOI) terjadi kenaikan seiring dengan banyaknya penggunaan pasir bekas pada cetakan yaitu sebesar 0.18%, 0.79%, 1.99%, dan 2.16%. Peningkatan ini juga terjadi pada pengujian kekuatan tarik pasir yaitu sebesar 39.3 N/Cm2, 59.58 N/Cm2, 60.42 N/Cm2, dan 62.21 N/Cm2. Hal ini disebabkan karena penggunaan pasir bekas dari proses pengecoran yang telah tercampur oleh pengotor dari proses pengecoran sebelumnya. Kenaikan nilai kekuatan tarik pasir dipengaruhi oleh penggunaan distribusi ukuran butir pasir yang dikarenakan ukuran butir pasir berhubungan dengan kepadatan pasir pada cetakan pasir. Dengan melakukan pemanfaatan limbah pasir bekas dapat mengurangi biaya pengeluaran pembelian pasir yaitu sebesar 23.3% pada rasio penggunaan pasir baru dengan pasir bekas 30:70. Hal ini dapat mengurangi limbah pasir bekas (menurunkan jumlah pasir dibuang) dan juga menurunkan biaya pengeluaran pasir dalam industri pengecoran logam.
Studi Pengaruh Temperatur Kalsinasi dalam Pembentukan Nanomagnetite dengan Metode Green Synthesis Ekstrak Daun Nanas Putra Parmita, Ade Wahyu Yusariarta; Panji; Dewanto, Hizkia Alpha; Sasongko, Ashadi; Qulub, Fitriyatul; Triana, Yunita; Parmita, Ade Wahyu Yusariarta Putra
SPECTA Journal of Technology Vol. 7 No. 2 (2023): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v7i2.940

Abstract

In synthesizing Fe3O4 nanoparticles using the green synthesis method by adding FeCl3.6H2O and pineapple leaf extract. Pineapple leaf extract is used as a natural reducing agent which contains hydroxyl and carbonyl, which acts as a reducing agent for the synthesized FeCl3.6H2O. Then after the precipitate is obtained, calcination will be carried out, where the calcination temperature in the synthesis becomes a factor in forming Fe3O4 nanoparticles. Different calcination temperatures of 400°C, 450°C, and 500°C were given to prepare Fe3O4 nanoparticles, with the XRD test results confirming that Fe3O4 nanoparticles were formed. In the SEM-EDX test, the optimum variation is 400°C because the average particle size is 150.23 nm with irregular particle shapes. Then proceed with the SAA results with a surface area of 60.125 m²/g. Nanomagnetite produced by green synthesis of pineapple leaf extract can be used as a removal dyes.
CHARACTERIZATION AND ELECTROCHEMICAL BEHAVIOUR OF BORON DOPED DIAMOND IN DETECTING AMODIAQUINE Dewanto, Hizkia Alpha; Awali, Jatmoko; Hizam, Fadli; Destiny, Keysi Devain; Al Habib, Irsyad; Nabila, Najwa; Handayani, Murni; Triana, Yunita
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.345

Abstract

Amodiaquine (AQ) is an essential medicine in treating malaria. Yet, the threat of drug resistance and toxicity necessitates accurate measurement of AQ in the human body. This research determines the amodiaquine (AQ) detection performance of boron-doped diamond (BDD) working electrodes. The study utilizes different pulse velocity (DPV) methods to analyze the AQ reaction behavior of BDD. The research demonstrates the reaction mechanism: Two electrons are transferred, and irreversible oxidation reactions occur. The sensor limit of detection (LOD) is measured to determine the performance of working electrodes for AQ detection. The LOD is calculated between 0.0645 µM and 0.3 µM, and changes in analytical concentrations relative to maximum current are calculated. The LOD of the BDD electrode is 1.5×10–8 M, lower than previous research on AQ sensors, showing the effectivity of the BDD electrode as an AQ sensor.
ANALISIS JARAK GRID HARDFACING TERHADAP NILAI KEKUATAN BENDING PADA MATERIAL ASTM A36: Hardfacing Awali, Jatmoko; Dewanto, Hizkia Alpha; Ismail , Andi Idhil
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1869

Abstract

Welding is the joining of metals in liquid form using heat energy in making products in the process of joining materials such as in the automotive sector. The development of welding has reached the additive manufacturing process, one of which is hardfacing, namely the thickening of a component that already exists in the industrial sector. In the automotive sector, many people use ASTM A36 or mild steel, namely carbon steel, for standard specifications for structural applications. Hardfacing is a process with an angle welding approach and the resulting structure has a direct relationship with the welding parameters and material characteristics during welding. Adding corner welding grids to increase the strength value of special mechanical properties such as car bodies. This research aims to determine the effect of the shape of the welding grid on the mechanical properties of GMAW welding using ER70S-6 electrodes and a welding current of 80 Ampere with variations in the weld metal spacing, namely 5 mm, 10 mm, 15 mm, and with ASTM A 36 material with a thickness of 2 mm. GMAW welding uses constant current by varying the hardfacing grid. From the research results it is known that the largest stiffness value is found at a variation of the weld metal distance of 10 mm with an average value of 1737.5 N. In the microstructure the phase formed is ferrite (F) and along the grain boundaries pearlite (P) is formed.
STUDY OF UTILIZING PINEAPPLE LEAF EXTRACT FOR THE GREEN SYNTHESIS OF FE3O4 AND ITS IMPREGNATION ON OIL PALM (EFB) Parmita, Ade Yusariarta Putra; Dewanto, Hizkia Alpha; Tajalla, Gusti Umindya Nur; Akbar , Aulia Arif; Tajalla, Nur
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1982

Abstract

The formation process of Fe3O4/EFB fiber was carried out by synthesizing FeCl3.6H2O and pineapple leaf extract using the green synthesis method. Pineapple leaf extract contains hydroxyl, carbonyl, and amine functional groups that can act as reductants and capping agents for the synthesized metal salts. Then, the in-situ impregnation was carried out to attach magnetite to the EFB fibers. The EFB fibers were then soaked in a mixture of precursor solution and pineapple leaf extract with a variation of liquor-to-good ratios of 1:40, 1:60, and 1:80 to determine the optimal ratio in forming Fe3O4/EFB fiber. In XRD testing, the three variations of samples have peak characteristics of magnetite (Fe3O4). SEM-EDX results also showed the Fe content from three samples tested. In the UV-Vis examination, the 1:80 sample has the highest percent degradation with 68.09%, and the lowest percent degradation belongs to untreated EFB with 12.44%. Visual tests showed that the 1:40, 1:60, and 1:80 variations could degrade methylene blue after 12 hours with addition of H2O2. H2O2 increases the reactivity of Fe3O4 by providing hydroxyl radicals that can attack pollutants and mineralize methylene blue into CO2 and H2O.
Co-Authors Akbar , Aulia Arif Al Habib, Irsyad Ali, Shodikin Ashadi Sasongko Azhary, Kartika Nerissa Batatta, Denada Yudhistira Destiny, Keysi Devain Fadhilah, Hana’ Fitriyatul Qulub Fiyana, Rima Himmaniyatul Hizam, Fadli Idhil Ismail, Andi Ismail , Andi Idhil Jatmoko Awali Laksono, Andromeda Dwi Lesmana, Muhammad Zidan Marippi, Alan Miles, Austin Murni Handayani Muthia Putri Darsini Lubis Nabila, Najwa Panji Parmita, Ade Yusariarta Putra Putra Parmita, Ade Wahyu Yusariarta Putra, Ade Wahyu Yusariarta Rungsa, Yudianto Tajalla, Gusti Umindya Nur Tajalla, Nur Yunita Triana, Yunita