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All Journal Jurnal Kawistara : Jurnal Ilmiah Sosial dan Humaniora Jurnal technoscientia Jurnal Rekayasa Lingkungan JURNAL TEKNOLOGI TECHNOSCIENTIA Cerdika: Jurnal Ilmiah Indonesia Jurnal Kawistara
Triastianti, Rita Dewi
Institut Teknologi Yogyakarta
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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TEKNOLOGI TEPAT GUNA PEMBUATAN ALAT PENDETEKSI GEMPA BUMI SEDERHANA Basuki; Warsiyah; Rita Dewi Triastianti; Triatmi Sri Widyaningsih
Jurnal Rekayasa Lingkungan Vol. 25 No. 2 (2025)
Publisher : Institut Teknologi Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37412/jrl.v25i2.430

Abstract

Teknologi pembuatan alat pendeteksi gempa bumi sederhana untuk memberikan solusi awal dalam mengenali getaran tanah secara praktis. Perancangan alat ini bertujuan untuk memberikan pemahaman teknis mengenai prinsip kerja sensor getaran dan respon mekanis terhadap gangguan seismik. Selain itu perancangan alat ini juga diharapkan dapat menjadi contoh teknologi tepat guna yang dapat dimanfaatkan dalam kegiatan pengabdian masyarakat atau kegiatan edukatif di lingkungan sekolah dan komunitas. Dengan adanya alat ini diharapkan kesiapsiagaan dan kesadaran masyarakat terhadap potensi bencana gempa bumi serta menjadi sarana pembelajaran praktis dalam bidang kebencanaan dan rekayasa teknologi. Metode Pengujian alat dilakukan dengan cara mensimulasikan getaran yang menyerupai gempa menggunakan getaran buatan, misalnya mengetuk atau mengguncangkan meja. Analisis data dilakukan secara deskriptif kualitatif. Data yang diperoleh dari hasil pengujian dicatat dan dianalisis untuk mengetahui efektivitas dan keterbatasan alat. Hasil penelitian bahwa pendeteksi gempa bumi ini membuktikan bahwa prinsip bandul cukup efektif sebagai sensor getaran sederhana. Bandul yang digantung secara bebas akan bereaksi terhadap pergerakan tanah. Berdasarkan penelitian menunjukkan bahwa alat ini dapat mendeteksi gempa minimal magnitudo 3 skala ricther.
Utilization of Domestic Sewon Bantul Sewage Sludge as Raw Material for Granular Organic Fertilizer (GOF) Ryan Bazaliel Alexandro Timpua; Warsiyah Warsiyah; Endah Ayuningtyas; Rita Dewi Triastianti
Cerdika: Jurnal Ilmiah Indonesia Vol. 6 No. 6 (2026): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v6i6.3566

Abstract

Domestic wastewater treatment plant (WWTP) sludge still contains organic matter and nutrients, indicating its potential for beneficial reuse. This study aimed to analyse the physicochemical characteristics of dried sludge from Sewon WWTP, Bantul Regency, and to evaluate its potential as a raw material for granular organic fertilizer through physical stabilisation without active composting. Dried sludge obtained from the sludge drying bed was formulated into four treatments: 100% sludge (F1), sludge combined with cattle manure (F2), sludge combined with fermented organic fertilizer mijongan (F3), and sludge combined with rice husk (F4), each at a 1:1 ratio. The processing stages included crushing, mixing, manual granulation using starch as a binder, and laboratory analysis of pH, moisture content, organic carbon, total nitrogen, total phosphorus, total potassium, and C/N ratio, with results compared against national solid organic fertilizer standards. The results showed that all formulations met the requirements for pH and organic carbon content. Variations were observed in moisture content, total nitrogen, and C/N ratio. Total phosphorus and potassium did not meet the minimum standard of ?2% across any of the formulations. The F4 formulation (sludge combined with rice husk) demonstrated the most balanced physicochemical quality, with a moisture content of 7.77%, total nitrogen of 2.15%, and a C/N ratio of 16.96. Overall, Sewon WWTP sludge shows potential as a raw material for granular organic fertilizer; however, further formulation optimisation is required to meet the minimum standards for phosphorus and potassium content.
Co-Authors Aditya Nugraha, Lutfi Amarullah, Zainal Mukhlis Apriadi Saputra Aprianto, Yusril Artiningsih, Wuryani Ayuningtyas, Endah Basuki Dimas Taufiq Ridlo Fachri, Ahmad Fadhila, Ashilla Sita Gregorius Hazilmi, Rian Heru Bagus Hermawan Indrawati, Rosiana Larasati Nanda Lakaoni Muyasaroh, Nurul Nasirudin Nasirudin Nasirudin NOVIYANTI Piah Anggela Pranajati, Andi Prihandoko, Diananto Rahyuni, Dewi Ryan Bazaliel Alexandro Timpua Sukirno Sukirno Virgina Melany Syukur Warsiyah Warsiyah Warsiyah Warsiyah Warsiyah, Warsiyah Widyaningsih, Triatmi Sri Wuryani Artiningsih