PREDIKSI KESETIMBANGAN ADSORPSI URANIUM PADA AIR DAN BERBAGAI JENIS SEDIMEN PADA BERBAGAI PH

• Main Authors: , Jasmi Budi Utami, , Prof. Ir. Wahyudi Budi Sediawan, S.U., Ph.D
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/119231/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=59226
• Institution: Universitas Gadjah Mada

Research, development, mining, and refining of uranium as nuclear fuel have the potential causes of environmental pollution. Uranium is a dangerous heavy metal because it is toxic and radioactive so that needs to know the extent to which the presence of uranium in the environment. This study aims to determine the uranium adsorption equilibrium models of uranium in water and sediment. In addition, this research aims to develop a method to predict equilibrium adsorption model of uranium in various types of sediments and different water pH. The expected benefits of this research is as support data for analysis activity and evaluation of environmental impacts in the construction of nuclear power plants. Uranium adsorption experiments were carried out in a batch system. One hundred ml waste water with a particular concentration put in an erlenmeyer. HCl or NaOH was added as a pH regulator with variations of pH: 3, 5, 7, 9. Furthermore, sediment/soil with some organic content incorporated into the erlenmeyer flask. Erlenmeyer flask then placed in a shaker bath and then shaken at 100 rpm at a room temperature for 6 hours and then left for 24 hours. Once equilibrium was reached, the wastewater (filtrate) was separated by sediments. The filtrate was analyzed using a spectrophotometer. Five different isotherm equilibrium models were proposed in order to fit the equilibrium experimental data. Chapman equilibrium approached fits within both experimental data on the variation of organic matter content and pH variations. Ions UO22+ had parameter values α, β, γ 25 mg/g soil