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All Journal To Maega: Jurnal Pengabdian Masyarakat Advance Sustainable Science, Engineering and Technology (ASSET)
Ilham Yustar Afif
Universitas Muhammadiyah Semarang
Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Other

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Pemberdayaan Masyarakat Desa Sumogawe dalam Pembuatan Pupuk Organik dengan Metode Fermentasi Em4 Slamet Saefudin; Apondala Apondala; Ilham Yustar Afif; Dini Cahyandari; Purnomo Purnomo; Achmad Solichan; Hanityo Adi Nugroho
To Maega : Jurnal Pengabdian Masyarakat Vol 6, No 3 (2023): Oktober 2023
Publisher : Universitas Andi Djemma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35914/tomaega.v6i3.1892

Abstract

Desa Sumogawe, Kecamatan Getasan, Kabupaten Semarang, mayoritas penduduknya adalah peternak susu sapi yang menghasilkan limbah kotoran sapi melimpah. Banyaknya kotoran sapi yang dihasilkan sampai saat ini belum mampu dimanfaatkan dengan baik oleh masyarakat sebagai produk yang bermanfaat. Pemanfaatan kotoran sapi salah satunya dapat digunakan sebagai bahan baku pembuatan pupuk organik. Kegiatan ini bertujuan untuk memberdayakan masyarakat desa Sumogawe dengan memberikan informasi dan praktik cara pembuatan pupuk organik dengan fermentasi menggunakan bakteri Effective Microorganisms 4 (EM4). Metode yang dilakukan meliputi sosialisasi dan pelatihan pembuatan pupuk organik dari limbah kotoran sapi yang dicampur dengan air cucian beras dan bakteri EM4. Setelah dilakukan sosialisasi masyarakat menyadari pentingnya pengolahan limbah sapi dan cara pengolahan menjadi pupuk dengan fermentasi bakteri EM4. Kegiatan pelatihan dengan praktik langsung telah berhasil membuat produk pupuk berbahan kotoran sapi yang dikemas dengan baik. Dari kegiatan ini, masyarakat mendapat pengetahuan dan mampu membuat pupuk organik untuk tanaman warga tanpa harus membeli pupuk di pasaranKata kunci: Pupuk organik, Kotoran sapi, Fermentasi, EM4
In Vitro Degradation and Mechanical Performance of Mg AZ31B for Biodegradable Bone Implant Applications Slamet Saefudin; Purnomo; Muhammad Subri; M. Edi Pujianto; Ilham Yustar Afif; Samsudi Raharjo
Advance Sustainable Science Engineering and Technology Vol. 8 No. 2 (2026): February-April
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i2.2652

Abstract

Magnesium AZ31B is a promising biodegradable implant material due to its mechanical properties comparable to natural bone and its ability to degrade in physiological environments, potentially eliminating the need for secondary surgery. However, its rapid degradation can cause a significant loss of mechanical integrity, limiting its use in load-bearing applications. This study investigates the evolution of mechanical properties and surface characteristics of AZ31B during in-vitro immersion in Simulated Body Fluid (SBF). Tensile tests were conducted on triplicate specimens after immersion for 3, 6, and 9 days, while surface morphology and corrosion products were analyzed using SEM–EDX. In addition, pH variation and mass loss were monitored to evaluate corrosion behavior. The results show a progressive decrease in tensile strength from 279.77 ± 5.30 MPa (0 days) to 167.64 ± 2.31 MPa after 9 days of immersion, representing an overall reduction of approximately 40%. This degradation was accompanied by increased surface corrosion, mass loss, and solution alkalization. These findings provide quantitative insight into the relationship between corrosion progression and mechanical degradation of AZ31B, highlighting its time-dependent performance limitations and the need for surface modification strategies in biodegradable implant applications.
Co-Authors Achmad Solichan Apondala Apondala Dini Cahyandari Hanityo Adi Nugroho M. Edi Pujianto Muhammad Subri Purnomo Purnomo . Saefudin, Slamet Samsudi Raharjo