음용수중의 중금속흡착과 항균성용 세라믹 볼의 제조 및 특성평가
Preparations and characteristics of the ceramic balls for heavy metals absorption and antibacterialactivities in the drinking water
0
조회
0
다운로드
0
인용
0
참고문헌
초록
20~40 nm 크기의 Ag 콜로이드가 첨가된 세라믹 볼을 이용하여 음용수중의 중금속 흡착 및 항균성에 대한 특성을 평가하였다. 다공성이 우수한 세라믹 볼을 제조하기 위한 조건은 다음과 같다. 즉, 출발원료: 85 wt%의 Ca10(PO4)6(OH)2, 바인더: 5 wt%의 PVA 및 15 wt%의 a-Ca3(PO4)2, 열처리온도: 1000oC, 반응시간: 3시간 이었다. 이와 같은 조건에서 얻어진 세라믹 볼은 비표면적이 110 m2/g 이었으며, 120 mm의 기공크기와 80 %의 기공율을 나타내었다. 그리고 AAS를 이용하여 음용수중의 중금속 흡착 제거율에 대한 성능시험을 행한 결과, Zn, Mn, Cu, Fe와 같은 중금속이 담지 1일 후 0.03 mg/l 이하로 제거 되었으며, 침적시간 3시간 후에는 대장균이 모두 멸균되는 우수한 살균력을 나타내었다.
Abstract
The ceramic balls impregnated with 20~40 nm sized Ag colloid were examined for heavy metals absorption and antibacterial activities in the drinking water. The preparation conditions of ceramic ball that the porosity was excellent were as follows: starting material: 85 wt% Ca10(PO4)6(OH)2, binder: 5 wt% PVA and 15 wt% a-Ca3(PO4)2, heating temperature: 1000oC, duration: 3 hrs. The ceramic balls obtained under these conditions showed specific surface area of 110 m2/g, pore size of 120 mm and porosity of 80 %. Also, as the results of a performance test on a rate of adsorbing and removing heavy metals in the drinking water by using the AAS, heavy metals such as Zn, Mn, Fe and Cu were removed to the extent that their content became 0.03 mg/l or lower after 1 day and they showed an excellent bactericidal activity that all coliforms were killed after 3 hrs.
참고문헌 (8)
- "? study on the adsorption of heavy metals in waste water using domestic clays? J. Korean Oil Chemists Soc. 21", pp.124~ (2004)
- "?reparation and characterization activated carbon fibers supported with silver metal for antibacterial behavior? J. Colloid Interface Sci. 261", pp.238~ (2003)
- "?ntibacterical pitch-based activated carbon fiber supporting silver?", pp.61~ (1998)
- "?ilver colloids from nonaqueous solvents?", pp.645~ (1998)
- "?reparation and characterization nanoscale silver colloids by two novel synthetic routes? J. Colloid Interface Sci. 242", pp.300~ (2001)
- "?he effect of zeta-potential on the stabilization of silver nanoparticle colloid prepared by alcohol reduction method with PVP? J. Korean Ind. Eng. Chem. 14", pp.487~ (2003)
- "characterization and surface modification of silver particles?", pp.1021~ (1998)
- "? study on the preparation of phosphatic calcium compounds using the shell resources? J. Koran Crystal Growth and Crystal Tech. 10", pp.171~ (2000)