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All Journal Lensa: Jurnal Kependidikan Fisika
Sukainil Ahzan
Program Studi Pendidikan Fisika, FPMIPA, IKIP Mataram
Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics

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Penggunaan Eceng Gondok Sebagai Filler untuk Meningkatkan Kuat Mekanik Batako Ringan Berbahan Dasar Limbah Emas Iin Sugianto; Dwi Sabda Budi Prasetya; Sukainil Ahzan
Lensa: Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (872.732 KB) | DOI: 10.33394/j-lkf.v6i2.1135

Abstract

[Title: The use of water hyacinth as a filler to improve the strength of lightweight brick making based on gold waste]. Research objectives is to testing the compression of lightweight brick. This research was conducted through three stages: Creating lightweight bricks (from waste mining of gold and water hyacinth) horizontally, orthogonally, and randomly. Characterization of the sample as follows: density, and compressive strength. The results show that the best compression analysis at low densities of light bricks horizontally, orthogonally and randomly in compositions: 70% GMW + 30% WH = 0.54MPa, 70% GMW + 30% WH = 1.18MPa, and 85% GMW + 15% WH = 0.73 MPa. Whereas, the density test horizontally, orthogonally, and randomly in composition variations of water hyacinth as follows: 70% GMW + 30% WH = 1.41gr/cm3, 3.40% GMW + 60% WH = 1.89gr/cm3, 85% GMW + 15 WH = 1.20 gr/cm3. It can be concluded that the filler composition is directly proportional to the compressive strength. In addition, the density is inversely proportional to the mass of the lightweight brick.
Analisis Kandungan Mineral Tembaga (Cu) yang Terdapat pada Struktur Batu Tambang Dengan Metode Atomic Absorption Spectrofotometer (AAS) Imam Bukhari; Susru Hiyatun Hayati; Nisa Humayroh; Sukainil Ahzan; Dwi Sabda Budi Prasetya
Lensa: Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.215 KB) | DOI: 10.33394/j-lkf.v6i2.1143

Abstract

[Title: Analysis of Copper (Cu) Mineral Content in the Mining Rock Structure using the Atomic Absorption Spectrophotometer (AAS) Method]. This research was conducted with the aim of: 1) Making chitosan based on local crab shells NTB, 2) Test the absorption of Au ions using chitosan with AAS. This research was carried out using the AAS method, namely by making chitosan from crab shells, Au stock solution which was prepared in the first stage was given chitosan powder and carried out absorption with varying times. Analysis of gold content in Au stocks that have been treated with AAS to determine the remaining Au content and Au absorbed.
Co-Authors Dwi Sabda Budi Prasetya Iin Sugianto Imam Bukhari Nisa Humayroh Susru Hiyatun Hayati