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All Journal Jurnal Mekanik Terapan BHAKTI PERSADA Jurnal Aplikasi IPTEKS (Journal of Applied Sciences and Technology)
Arsani, Ida Ayu Anom
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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.
Inovasi Teknologi Dan Optimalisasi Proses Destilasi Untuk Produksi Arak Tradisional Bali Waisnawa, I Gede Nyoman Suta; Arsani, Ida Ayu Anom; Rajendra, I Made; Sudana, I Made
Bhakti Persada Jurnal Aplikasi IPTEKS Vol. 8 No. 1 (2022): Bhakti Persada Jurnal Aplikasi IPTEKS
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/bp.v8i1.69-76

Abstract

Arak merupakan salah satu minuman tradisional mengandung alkohol yang dihasilkan melalui proses destilasi dengan bahan baku nira yang bermanfaat sebagai bahan pencampur produk olahan berupa makanan dan minuman. Kendala dalam produksi arak dengan alat destilasi tradisional atau sederhana mengacu pada aspek waktu dan temperatur proses produksi cukup lama serta kontrol terhadap temperatur pemanasan nira dan pendinginan uap  nira belum bisa dilakukan pengukuran dengan pasti. Temperatur pemanasan nira dan pendinginan uap nira yang kurang tepat dapat memepengaruhi kualitas dan kuantitas hasil distilasi.  Peroses distilasi secara tradisional sangat dipengaruhi juga oleh pengalaman perajin dengan intusisinya memperkirakan proses pemanasan yang terjadi di dalam tungku kesalahan dalam menjaga api pemanas dari pembakaran kayu bakar ini harus ditunggui dan diamati secara terus menerus. Berdasarkan hasil penelitian dan rancang bangun alat distilasi dapat diterapkan sistem kontrol suhu pemanasan nira pada tungku dan suhu pendinginan uap nira dapat diukur dan dikontrol dengan alat pengatur yang disebut thermo kontrol. Penerapan sistem thermo kontrol ini berpengaruh terhadap kualitas dan kuantitas produk hasil distilasi. inovasi teknologi dalam proses produksi arak  untuk  meningkatkan hasil dan kualitas produk. Penerapan inovasi alat destilasi yang dikembangkan terbukti dapat meningkatkan kandungan alkohol sampai dengan 70% dan menurunkan waktu produksi.
Co-Authors I Gede Nyoman Suta Waisnawa I Made Sudana I Wayan, Marlon Managi Rajendra, I Made Wimargamal, Natan