CD Tugas Akhir
Pembuatan Arang Sekam Padi Yang Diaplikasikan Untuk Mengadsorpsi Logam Cu
ABSTRACT
Piles of rice husks have no selling value and become one of the wastes that cause the surrounding environment to be unhealthy, so an appropriate technique for processing rice husk waste is needed. One technique for processing rice husk waste is to process it into activated charcoal. Activated charcoal is widely used as an adsorbent in wastewater treatment to remove various types of heavy metals through the adsorption process. The purpose of this study was to determine the effect of variations in particle size of rice husk activated charcoal on Cu metal adsorption and to determine the effectiveness of Cu metal adsorption by varying the concentration of Cu metal using rice husk activated charcoal as an adsorbent. This research begins with the preparation of raw materials, charcoal activation, then activated using 1 N HCL solution for 24 hours. Then the adsorption process was carried out by contacting the adsorbent with Cu metal, with adsorbent sizes of 80, 100 and 100 mesh, adsorbate concentrations of 15, 20 and 25 ppm, stirring speed of 250 rpm and the amount of activated charcoal as much as 5 grams. The adsorption solution was then analyzed using AAS. The adsorbents produced with particle size variations of 80, 100, and 120 mesh each contain 5%; 6%; and 9%
water, 42%, 44% and 47% ash and iodine adsorption capacity of 450.48 mg/gr,
494.9 mg/gr, and 539.32 mg/gr. The highest absorption effectiveness is found in the 80 mesh size of the adsorbent with an adsorbate concentration of 20 ppm, which is 99.84% with an adsorption value of 0.031 ppm.
Keywords : AAS, adsorption, absorbing capacity, effectiveness, rice husk activated charcoal
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