Effect of Some Tea on Removability of Cd and Pb Ion in Solution

찻물에서의 Cd과 Pb이온 제거에 관한 차입자의 효과

  • 김중만 (원광대학교 생명자원과학대학) ;
  • 백승화 (충북도립 옥천대학 식품공학과) ;
  • 박성수 (송원대학 식품영양과)
  • Published : 1998.10.01

Abstract

Removabilities of heavy metals(Cd and Pb) by the tea materials (barley-tea, corn-tea, jasmin-tea, brown rice-green tea, black-tea, cassia tora-tea, persimmon peel-tea, and rice-tea) in the tea-water were studied in the various conditions ; particle size of tea (20, 40, 70 mesh), concentration of heavy metal (25, 50, 100 ppm) and extraction temperature(20, 30, 50, 100$^{\circ}C$). The removabilities by the tea solids were increased as the particle size decreased, concentration of heavy metal increased, and extracting temperature increased. Of the nine kinds of tea, Cd and Pb removability by jasmin-tea was highest. In addition, heavy metal removability by cassia tora tea was better than that of other tea as extraction temperature was increased.