지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.3
- 수록면
- 15 - 22 (8page)
이용수
초록· 키워드
오류제보하기
In this study, the performances of various adsorbents-red mud, zeolite, limestone, and oyster shell-were investigated for the adsorption of multi-metal ions (Cr<sup>3+</sup>, NI₂+, Cu2+, Zn2+, As<sup>3+</sup>, Cd2+, and Pb2+) from aqueous solutions. The result of scanning electron microscopy analyses indicated that the some metal ions were adsorbed onto the surface of the media. Moreover, Fourier transform infrared spectroscopy analysis showed that the Si(Al)-O bond (red mud and zeolite) and C-O bond (limestone and oyster shell) might be in volved in heavy metal adsorption. The changes in the pH of the aqueous solutions upon applying adsorbents were investigated and the adsorption kinetics of the metal ions on different adsorbents were simulated by pseudo-first-order and pseudo-second-order models. The sorption process was relatively fast and equilibrium was reached after about 60 min of contact (except for As<sup>3+</sup>). From the maximum capacity of the adsorption kinetic model, the removal of Pb2+ and Cu2+ were higher than for the other metal ions. Meanwhile, the reaction rate constants (k1,2) indicated the slowest sorption in As<sup>3+</sup>. The adsorption mechanisms of heavy metal ions were not only surface adsorption and ion exchange, but also surface precipitation. Based on the metal ions` adsorption efficiencies, red mud was found to be the most efficient of all the tested adsorbents. In addition, impurities in seawater did not lead to a significant decrease in the adsorption performance. It is concluded that red mud is a more economic high-performance alternative than the other tested adsorption materials for applying a removal of multi-metal in seawater.
목차
등록된 정보가 없습니다.
참고문헌 (37)
참고문헌 신청
1. [단행본] - Alloway BJ / 1990 / Heavy metals in soils / Halsted Press : 7 ~ 28
2. [학술지(정기간행물)] - Gray CW / 2006 / Field evaluation of in situ remediation of a heavy metal contaminated soil using lime and red-mud / Environ. Pollut 142 : 530 ~ 539
3. [학술지(정기간행물)] - Lombi E / 2002 / In situ fixation of metals in soils using bauxite residue: chemical assessment / Environ. Pollut 118 : 435 ~ 443
4. [학술지(정기간행물)] - Basta NT / 2004 / Evaluation of chemical immobilization treatments for reducing heavy metal transport in a smelter-contaminated soil / Environ. Pollut 127 : 73 ~ 82
5. [학술지(정기간행물)] - Castaldi P / 2005 / Thermal and spectroscopic studies of zeolites exchanged with metal cations / J. Mol. Struct 734 : 99 ~ 105
2. [학술지(정기간행물)] - Gray CW / 2006 / Field evaluation of in situ remediation of a heavy metal contaminated soil using lime and red-mud / Environ. Pollut 142 : 530 ~ 539
3. [학술지(정기간행물)] - Lombi E / 2002 / In situ fixation of metals in soils using bauxite residue: chemical assessment / Environ. Pollut 118 : 435 ~ 443
4. [학술지(정기간행물)] - Basta NT / 2004 / Evaluation of chemical immobilization treatments for reducing heavy metal transport in a smelter-contaminated soil / Environ. Pollut 127 : 73 ~ 82
5. [학술지(정기간행물)] - Castaldi P / 2005 / Thermal and spectroscopic studies of zeolites exchanged with metal cations / J. Mol. Struct 734 : 99 ~ 105
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2017-539-001538899