Analysis of Sludges from Wastewater of Hanji Production

한지 생산공정에서 발생하는 슬러지의 분석

  • Choi, Hee-Seon (Department of Chemistry, The University of Suwon) ;
  • Kim, Tai-Jin (Department of Chemical Engineering, The University of Suwon)
  • 최희선 (수원대학교 자연과학대학 화학과) ;
  • 김태진 (수원대학교 공과대학 화학공학과)
  • Received : 1999.03.06
  • Published : 1999.08.25

Abstract

Sludges from the wastewater of hanji production were analysed to see that sludges from the bleaching process, the bleach washing process, and the paper preparation process were fibrous, while sludges from the process cooking with NaOH and the process of final chemical and microbiological treatment were non-fibrous. Sludge solution from the bleaching process had the most amount of solid matters. Sludges from the bleaching process, the bleach washing process, and the final chemical and microbiological treatment process contained about 80-90 %(w/w) moisture. Owing to hypochlorite ion, pH of sludge from the bleaching process was higher than any other sludge samples. The inorganic components of sludges were determined by ICP-AES. The major inorganic component of sludge from the process cooking with NaOH was Na, while the sludge from the bleaching process had Na and Ca, major components in the final chemical and microbiological treatment process were Ca and Al. Trace amount of Mg, Fe, K, P, Mn and Ti were observed in sludges. Sludge from the bleaching process had ashes more than any other sludges. Shape of sludges observed by SEM was appeared to fibrous or crystalline, and the breadth of fibrous sludge was $5{\sim}50{\mu}m$. The sludge from the bleaching process had the most amount of matters soluble by cold and hot water and by alcohol-benzene.

Keywords

hanji sludge;amount of solid matters;ICP;shape of sludge;SEM

Acknowledgement

Supported by : 산업자원부

References

  1. 한국의 종이문화 정선영
  2. 한국의 화학공업과 기술 강흥
  3. 한국산업규격, KS M 7033 한국 표준협회
  4. 국립중앙과학관총서 9 전통과학기술조사연구(Ⅲ)(염색, 한지, 옻칠) 정동찬;유창영;홍현신;윤용현;신영순
  5. Quantitative Analysis and Chemical Equilibrium(4th Ed.) T. R. Hogness;W. C. Johnson
  6. 한국산업규격, KS M 7032 한국 표준협회
  7. 한국산업규격, KS M 7034 한국 표준협회
  8. Chemistry(2nd Ed.) J. E. Brady;J. R. Holum
  9. 한국산업규격, KS M 7053 한국 표준협회
  10. 한국산업규격, KS M 7035 한국 표준협회