폐석고 침전제를 이용한 불소폐수 처리특성

• Published in: 한국물환경학회지, 26(6) pp. 919 - 925
• Main Authors: 김성준, 전용태, 원찬희
• Format: Journal Article
• Language: Korean
• Published: 한국물환경학회 30.11.2010
• Subjects: 환경공학
• ISSN: 2289-0971; 2289-098X

The features of precipitating reaction of fluoride have been examined by employing waste gypsum as a precipitant. The major component of waste gypsum was examined to be CaO with minor components of SO3, SiO2. In the experimental condition, the precipitating reaction of fluoride progressed rapidly within a few minutes after the reaction started and reached its equilibrium in 10 minutes. Kinetic analysis showed that the precipitating reaction of fluoride generally followed a first Oder and second Oder with decreasing rate constant with the initial dosage of precipitant. XRD analysis showed that the crystalline structure of precipitate was mainly CaF2 with partly Ca5(PO4)3(OH). The features of precipitating reaction of fluoride have been examined by employing waste gypsum as a precipitant. The major component of waste gypsum was examined to be CaO with minor components of SO3, SiO2. In the experimental condition, the precipitating reaction of fluoride progressed rapidly within a few minutes after the reaction started and reached its equilibrium in 10 minutes. Kinetic analysis showed that the precipitating reaction of fluoride generally followed a first Oder and second Oder with decreasing rate constant with the initial dosage of precipitant. XRD analysis showed that the crystalline structure of precipitate was mainly CaF2 with partly Ca5(PO4)3(OH). KCI Citation Count: 0