Repository Universitas Pakuan

Detail Karya Ilmiah Dosen

Iman Maulana, Ani Iryani, Husain Nashrianto

Judul : PEMANFAATAN AMPAS TEH SEBAGAI ADSORBEN ION KALSIUM (Ca 2+ ) DAN ION MAGNESIUM (Mg 2+ ) DALAM AIR SADAH UTILIZATION of TEA WASTE AS ADSORBENT ION CALCIUM ( Ca 2+ ) AND ION MAGNESIUM (Mg 2+ ) IN THE HARD WATER
Abstrak :

ea drinks produce tea waste that has a high enough cellulose content is about 33,54% of the dry weight. The cellulose has the ability to bind metal ions by adsorption because there are carboxyl and hydroxyl function groups in it. Therefore, this research has purpose is to know the ability of the cellulose contained in the tea waste to adsorp Ca 2+ and Mg 2+ ions wich caused by water hardness, so it can be beneficial to the general public. Utilization of tea waste as adsorbent Ca 2+ and Mg 2+ was conducted on sample of hard water as laboratory experimental methods using AAS instrument to determine the optimum conditions of pH and contact time for absorption. The determination of optimum pH is performed at variation of pH 2, 4, 6 and 8, while for the determination of the optimum contact time is performed at the time variation of 5 minutes, 10 minutes, 20 minutes and 30 minutes. The optimum adsorption conditions that have been obtained are used to determine the type of adsorption isotherm. The result showed that to optimumly utilize the tea waste as adsorbent Ca 2+ and Mg 2+ , the conditions can be carried out at pH 8, with a contact time of 10 minutes. The highest of adsorption efficiency is 31,56% for Ca 2+ , while 26,28% for Mg 2+. The type of adsorption isotherm of them is the Freundlich isotherm (r 2 = 0,9822 and 0,8432). 

Tahun : 2017 Media Publikasi : Jurnal Nasional Blm Akreditasi
Kategori : Jurnal No/Vol/Tahun : 1-7 / 2 / 2017
ISSN/ISBN : 2017xxx
PTN/S : Universitas Pakuan Program Studi : KIMIA
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