Renti Sefriani, Budhi Oktavia
Natural silica is one of the biggest mining products in Indonesia. Silica has the ability to absorb ions because it has two sites that actively activate silanol and siloxan groups that are accessible. Modifications were made to improve the ability of silica to perform impulses. Water ions if they have very high levels can release marine biota ecosystems, phosphate levels that are too high in waters can cause eutrophication, which is the higher levels of oxygen entering the sea. To reduce phosphate levels, phosphate adsorption is carried out using returned silica. The application of silica as a phosphate ion absorber was analyzed through measurements with a spectrophotometer. Adsorption of phosphate ions using pure silica has a maximum absorption of 0.2533 mg / g and silica after modification can adsorb a maximum phosphate ion of 1,1629 mg / g. © Published under licence by IOP Publishing Ltd.
Chemistry Department, Faculty of Mathematics and Natural Science Universitas Negeri Padang, Prof.Hamka street, Air Tawar Barat, Padang, West Sumatera, Indonesia
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