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All Journal Lensa: Jurnal Kependidikan Fisika

Dwi Sabda Budi Prasetya

Program Studi Pendidikan Fisika, FPMIPA IKIP Mataram

Author-ID : 5302085

Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics

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Pembuatan Kitosan dari Cangkang Udang sebagai Adsorben Emas (Au) Indra Jaya; Joni Syaputra; Dwi Sabda Budi Prasetya; Dwi Pangga
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

[Title: Making Chitosan From Shrimp Cup As Gold (Au) Adsorben]. This study aims to make chitosan from shrimp shell as golden adsorbent. Stages of chitosan preparation include demineralization stage using 1,5M HCL, deproteination stage using 3.5% NaOH to obtain chitin powder, then followed by chitin deacetylation stage using 60% NaOH to produce an anime that is chitosan. Subsequently, the chitosan obtained was characterized, analyzed functional group with FTIR and determined its adsorption capacity against Au metal ion, Au content in the sample before and after adsorption was measured using AAS. The results showed chitosan characterization as follows: rendeman 45.83%, have powder texture, white colour, odourless, have moisture content 1.55%, perfectly soluble in glacial acetic acid 2% and purple positive with ninhydrin solution showed chitin has turned into chitosan. Based on calculations from the results of the resulting chitosan FTIR data has a degree of deacetylation 71.17%. From the result of analysis by using AAS that chitosan obtained able to adsorb Au metal from concentration 8.55 ppm decrease until 5,09 ppm with adsorption percentage equal to 40.46%.

Time Stirring Effect of Chitosan from Shrimp Shells as Gold Absorbent Dwi Sabda Budi Prasetya; Sukainil Ahzan
Lensa: Jurnal Kependidikan Fisika Vol 7, No 2: December 2019
Publisher : Universitas Pendidikan Mandalika

This study aims to analyze the effect of chitosan stirring time from shrimp shells as gold absorber. Experimental research was conducted in this study, where the manufacture of chitosan from shrimp shells began with demineralization (mineral removal) using 1.5 M HCl, deproteination (protein removal) using 3.5% NaOH and deacetylation (acetyl removal) using 60% HCl. The chitosan formed was weighed 0.1 gram (as many as five samples) and then stirred in a 10 ppm Au solution, with a stirring time of 0, 10, 20, 30, and 40 minutes, and its absorption ability to gold was analyzed using AAS (Atomic Absorbsion Spectroscopy) and obtained percentage of absorption respectively 24.79%, 50.89%, 45.64%, 40.52% and 37.87%. From the results of the study, it was found that there was an effect of chitosan stirring time from shrimp shells as gold absorber and the highest absorption at 10 minute stirring was 50.89%.

Co-Authors Dwi Pangga Indra Jaya Joni Syaputra Sukainil Ahzan

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