Earticle

초록

영어

Arsenic (As) is one of the elements having most harmful impact on the human health. Arsenic is a known carcinogen and arsenic contamination of drinking water is affecting on humans in many regions of the world. Adsorption has been proved most preferable technique for the removal of arsenic. Many researchers have studied various types of solid materials as arsenic adsorbent, and iron oxide and its modified forms are considered as the most effective adsorbent in terms of adsorption capacity, recovery, and economics. However, most of all iron oxides have small surface area in comparing with common adsorbents in environmental application such as activated carbon but the activated carbon has weak sorption affinity for arsenic. We have used an activated carbon as base adsorbent and iron oxide coating on the activated carbon as high affinity sorption sites and giving magnetic attraction ability. In this study, adsorption properties of arsenic and magnetic separation efficiency of the magnetized activated carbon (MAC) were evaluated with variable iron oxide content. As the iron oxide content of the MAC increased, adsorption capacity has also gradually increased up to a point where clogging by iron oxide in the pore of activated carbon compensate the increased sorption capacity. The increase of iron oxide content of the MAC also affected magnetic properties, which resulted in greater magnetic separation efficiency. Current results show that magnetically modified common adsorbent can be an efficiency improved adsorbent and a feasible environmental process if it is combined with the magnetic separation.

목차

Abstract
1. INTRODUCTION
2. EXPERIMENTAL METHODS
2.1. Chemicals
2.2. Analytical Methods
2.3. Preparation of MAC
2.4. Magnetic Separation
2.5. Adsorption Experiment
3. RESULTS AND DISCUSSION
3.1. Characteristics of the MAC
3.2. Adsorption isotherms
3.3. Regeneration of the used MAC
4. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• H. W. Kwon [ Department of Environmental Engineering, Andong National University, Andong, Korea ]
• T. C. Shin [ Department of Environmental Engineering, Andong National University, Andong, Korea ]
• J.J. Kim [ Department of Earth and Environmental Sciences, Andong National University, Andong, Korea ]
• D.W. Ha [ Korea Electrotechnology Research Institute, Changwon, Korea ]
• Min Gyu Kim [ Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Gyeonggi-do, Korea ]
• Young-Hun Kim [ Department of Environmental Engineering, Andong National University, Andong, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537