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All Journal JURNAL PESISIR DAN LAUT TROPIS Jurnal MIPA CHEMISTRY PROGRESS Jurnal Penelitian Fisika dan Aplikasinya (JPFA) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JURNAL PENDIDIKAN TAMBUSAI PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Jurnal Lentera Farma
Bakti, Andi Ikhtiar
Universitas Sam Ratulangi
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Peningkatan Hasil Pertanian Tanaman Hortikultura melalui Pelatihan Smart Farming di Tomohon Andi Ikhtiar Bakti; Ade Yusupa; Tika Putri Agustina
PaKMas: Jurnal Pengabdian Kepada Masyarakat Vol 5 No 2 (2025): November 2025
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/pakmas.v5i2.3350

Abstract

The Maulit Farmers Group, located in Tomohon City, North Sulawesi, has the potential for horticultural farming due to its geographical location on the slopes of Mount Lokon. The challenges faced include limited funds and technology knowledge and skills in applying smart farming technology which impact production results. The purpose of this training activity is to implement a smart farming system to optimize horticultural crop yields, increase the income of Maulit Farmers Group members, and empower the surrounding community. The training methods include program socialization, training on smart farming systems, business strategy and digital marketing, and horticultural crop cultivation, followed by program mentoring and evaluation. After the training activities, there was an increase in knowledge and skills: from a pre-test result where 80% did not understand the technology, to a post-test result showing 90% who understood and could independently operate smart farming technology. Based on these results, the training activity achieved the targeted outcomes is independence in implementing smart farming technology to enhance agricultural production and initiate sustainability for farmer groups located in the surrounding areas.
Integration of IoT and Smart Sensor Technology for Multi-Parameter Monitoring of Seawater Quality Handy I.R. Mosey; Andi Ikhtiar Bakti; Maria D. Bobanto; Mans L. Mananohas
JURNAL PESISIR DAN LAUT TROPIS Vol. 13 No. 3 (2025): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.13.3.2025.64667

Abstract

This study designs and implements a portable water quality measuring device as an alternative solution for monitoring the physical parameters of seawater. The system is developed to measure sea surface temperature, Total Dissolved Solids (TDS), and electrical conductivity (EC). It employs a Keystone TDS v1.0 sensor and a DS18B20 temperature sensor. A NodeMCU V3 microcontroller module equipped with Wi-Fi is used as the data processor for sensor readings and as the data transmitter to the internet via a modem. The measurement data are transmitted wirelessly and displayed through the Internet of Things (IoT) applications Blynk and Telegram. Device calibration was carried out using a comparative method compared to standard instruments at the Basic Physics Laboratory, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University (FMIPA-UNSRAT). Performance testing was conducted in the Manado Reclamation Coastal Area on October 17, 2025. The sensor measurement data were validated using the Root Mean Square Error (RMSE) method to evaluate sensor accuracy, yielding an RMSE value of 1.887 with a standard deviation of 0.295. The validation results indicate that the sensor’s data reading accuracy is considerably high. Keywords: water quality, physical parameter, internet of things, sensor   Abstrak Penelitian ini merancang dan mengimplementasikan perangkat pengukur kualitas air portabel sebagai solusi alternatif untuk pemantauan parameter fisika air laut. Sistem dirancang untuk memantau suhu permukaan, Total Dissolved Solid (TDS), dan konduktivitas Listrik. Sistem ini dirancang dengan menggunakan sensor TDS v1.0 dari keystone dan sensor suhu DS18B20.  Modul mikrokontroler NodeMCU V3 yang telah dilengkapi WiFi digunakan sebagai pemroses data pembacaan sensor dan sebagai pengirim data pengukuran ke jaringan internet melalui modem.  Data hasil pengukuran dikirim secara nirkabel selanjutnya ditampilkan melalui aplikasi Internet of Things (IoT) Blynk dan aplikasi Telegram. Kalibrasi perangkat dilakukan dengan metode komparatif terhadap alat standar pada Laboratorium Fisika Dasar FMIPA-UNSRAT. Uji performa perangkat dilaksanakan di Kawasan Reklamasi Pantai Manao pada 17 Oktober 2025. Data hasil pengukuran sensor divalidasi dengan menggunakan metode Root Mean Square Error (RMSE) untuk mengukur tingkat akurasi sensor, dengan nilai sebesar RMSE sebesar 1,887 dengan standar deviasi sebesar 0,295. Hasil validasi menunjukkan bahwa akurasi pembacaan data sensor sangat tinggi. Kata kunci: kualitas air, parameter fisika air, internet of things, sensor.
Studi Eksperimen Metode Elektrokoagulasi dalam Menurunkan Kesadahan Air dengan Variasi Kombinasi Jenis Elektroda Inert dan Non Inert Jumriadi; Nugraha, Mahendra Kusuma; Bakti, Andi Ikhtiar; Hariyanto, Yuanita Amalia
Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Vol. 3 No. 2 (2022): Jurnal Lentera - Penelitian dan Pengabdian Masyarakat
Publisher : Yayasan Bina Lentera Insan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57207/t5pc2f44

Abstract

Ketersediaan air di alam seringkali tidak memenuhi standar air layak konsumsi karena mengandung zat-zat yang berbahaya bagi tubuh. Kesadahan adalah salah satu sifat kimia yang ada dalam air, namun mengkonsumsi air dengan kesadahan yang tinggi akan berbahaya bagi kesehatan. Ada beragam metode untuk menurunkan kesadahan air, masing-masing dengan kelebihan dan kekurangannya. Metode elektrokoagulasi karena kesederhanaannya, telah banyak mendapatkan perhatian untuk digunakan dalam menghilangkan berbagai ion dan bahan organik. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dari kombinasi jenis elektroda inert (Pt) dan elektroda non inert (Al, Fe, dan Cu) dalam menurunkan kesadahan air menggunakan metode elektrokoagulasi. Penelitian ini dilakukan dengan menggunakan beker glass 1 L diletakkan di atas magnetic stirrer dengan kecepatan pengadukan 450 rpm selama 30 menit. Tegangan yang diberikan adalah 12 V dengan variasi elektroda menggunakan Pt-Cu, Pt-Fe, dan Pt-Al. Air sumur bor yang berada di asrama mahasiswa Universitas Halu Oleo digunakan dalam penelitian ini dengan kosentrasi awal untuk CaCO3 adalah 312,36 mg/L dan kosentrasi Ca 96,88 mg/L. penurunan kosentrasi kesadahan yang terbaik dengan menggunakan elektroda Pt-Cu yakni 15,63 mg/L untuk Ca dan 89,38 mg/L CaCO3, disusul elektroda Pt-Fe dengan penurunan Ca 21,88 mg/L dan 98,5 untuk CaCO3 kemudian elektroda Pt-Al dengan penurunan 28,13 mg/L Ca dan 107,62 mg/L CaCO3.
Biomass-Derived Activated Carbon via Na₂CO₃, KOH, and ZnCl₂ Activation: A Comparative Physicochemical Study toward Energy Storage Electrodes Bakti, Andi Ikhtiar; Rio, Afrioni Roma; Mosey, Handy Indra Regain; Jumriadi, Jumriadi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 14 No 2 (2025): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v14i2.29076

Abstract

This study investigates the fabrication of granular activated carbon (AC) from biomass waste using three chemical activating agents: sodium carbonate (Na₂CO₃), potassium hydroxide (KOH), and zinc chloride (ZnCl₂), to evaluate their effects on structural, morphological, and electrical properties relevant to energy storage applications. An experimental laboratory-based method with a comparative activation approach was employed. The resulting activated carbon samples were characterized by X-ray diffraction (XRD), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM–EDS), and iodine adsorption and electrical measurements. XRD analysis revealed that all samples predominantly exhibit amorphous or turbostratic carbon structures with partial structural ordering, with ZnCl₂-activated samples showing higher short-range ordering than those activated with the other activators. SEM observations indicated qualitative differences in surface morphology and pore development, with more pronounced pores in the KOH-activated carbon. EDS analysis confirmed carbon-rich surfaces with minor residual inorganic elements originating from the activating agents and biomass precursor. Iodine adsorption results, used as a proxy indicator of microporosity, showed that the KOH-activated carbon exhibited the highest iodine number (630.70 mg/g). Electrical measurements, reported as apparent electrical conductivity under the applied packed-bed measurement conditions, also indicated the highest value for the KOH-activated sample (1724.10 S/m). Based on the parameters measured in this study, KOH activation produced the most favorable combined iodine adsorption and apparent electrical conductivity among the activation routes investigated. Therefore, KOH-activated biomass-derived carbon is identified as the most promising candidate for subsequent electrochemical validation toward supercapacitor electrode applications.
Co-Authors Afrioni Roma Rio As'ari, As'ari Asep Rahman, Asep Gareso, Paulus Lobo Handy I. R. Mosey Handy I.R. Mosey Handy Indra Regain Mosey Hariyanto, Yuanita Amalia Herny E.I. Simbala Jumriadi Mahendra Kusuma Nugraha Mans L. Mananohas Marco Alfiano Laoh Maria D. Bobanto Megastin M. Lumembang Mokalu, Ribka G. Nurlaela Rauf Ribka G. Mokalu Salsabila, Unik Hanifah Tika Putri Agustina Verna A. Suoth Yuniar Alam