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All Journal Jurnal Teknodik Jurnal Mekanik Terapan
Arsani, Ida Ayu Anom
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Automotive Engineering Computer Science & IT Education Energy Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering

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Tablet Pemurni Air Yang Terkontaminasi Logam Berat Dengan Memanfaatkan Limbah Kerang Darah (Tegillarca Granosa) I Wayan, Marlon Managi; Arsani, Ida Ayu Anom; Wimargamal, Natan
Jurnal Mekanik Terapan Vol 6 No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v6i2.7536

Abstract

Water pollution caused by heavy metals such as lead (Pb) poses a serious threat to both environmental and human health. One promising solution involves the use of natural materials derived from organic waste as adsorbents, such as blood clam shells (Tegillarca granosa), which are rich in calcium carbonate (CaCO₃) and exhibit high potential following calcination. This study aims to evaluate the effect of calcination temperature variation on the adsorption efficiency of clam shells in tablet form for Pb²⁺ ions. The calcination process was conducted at temperatures of 400°C, 650°C, and 900°C for 2 hours each, following an initial drying stage at 150°C for 1 hour. The resulting calcined powder was ground, sieved, and compressed into tablets using a mechanical pressure of 150 N. Adsorption tests were carried out using a Pb solution with a concentration of 38.9 ppm for 1 hour, and the residual concentration was analyzed using Atomic Absorption Spectrophotometry (AAS). The results showed that calcination at 400°C yielded the highest adsorption efficiency at 99.3%, followed by 650°C (99.1%) and 900°C (98.4%). These findings indicate that calcination temperature significantly influences the characteristics and performance of the adsorbent, highlighting the potential of calcined blood clam shell waste as an effective and sustainable alternative for removing heavy metal contaminants from polluted water.
PERAN TEKNOLOGI MULTIMEDIA DALAM MENYAJIKAN KONSEP-KONSEP KIMIA PADA TINGKAT MAKROSKOPIS, MIKROSKOPIS, DAN SIMBOLIS Arsani, Ida Ayu Anom
Jurnal TEKNODIK Jurnal Teknodik Vol. 13 No. 1, Juni 2009
Publisher : Pusat Data dan Teknologi Informasi Kementerian Pendidikan Kebudayaan, Riset dan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (89.63 KB) | DOI: 10.32550/teknodik.v13i1.442

Abstract

Pemanfaatan teknologi multimedia dalam bidang pendidikan sangat menunjang efesiensi dan efektivitas proses belajar mengajar. Penggunaan multimedia dalam pendidikan dapat menggiring pebelajar ke dalam pengalaman multisensori untuk promosi belajar. Dalam bidang kimia, multimedia dimanfaatkan untuk menyajikan konsep-konsep kimia pada tingkat makroskopis, mikroskopis, dan simbolis. Multimedia dapat menjelaskan konsep-konsep abstrak melalui animasianimasi , sehingga, kimia yang dipandang oleh sebagian orang sebagai ilmu yang sulit dipahami, akan menjadi lebih mudah dipahami. Multimedia dapat mengkombinasikan suara, animasi, gambar, dan video secara bersamaan serta melibatkan semua panca inderanya dan mengembangkan gaya belajar yang disukainya. Salah satu hasil penelitian menemukan implikasi dari penggunaan multimedia dalam pembelajaran kimia yaitu mendorong pebelajar aktif, terorganisaasi, dan dapat mengintegrasikan informasi yang diperoleh untuk memahami konsepkonsep dan prinsip yang sulit serta dapat digunakan untuk memecahkan masalah.
Co-Authors I Wayan Marlon Managi Wimargamal, Natan