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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 337 - 343 (7page)
- DOI
- https://doi.org/10.26511/JKSET.22.5.4
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초록· 키워드
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This study was conducted to evaluate the usability of lanthanum hydroxide for arsenic removal from water. Batch adsorption experiments were performed to study the influence of various factors such as pH, contact time, initial arsenic concentration and presence of competing anions on arsenic adsorption by lanthanum hydroxide. Lanthanum hydroxide had a higher affinity for As(V) than As(III). Efficient As(V) removal was observed in the pHeq 4.0~8.0. The pseudo-second-order kinetic model and the Langmuir isotherm model described well the experimental data. The maximum monolayer adsorption capacity was found to be 125.0 mg/g. The adsorption energies of 16.00~16.28 kJ/mol indicate an ion exchange process as primary adsorption mechanism. The presence of competing anions, except for phosphate, did not significantly affect As(V) removal by lanthanum hydroxide. The As(V) adsorbed on lanthanum hydroxide could be desorbed with NaOH solution. The results of this study demonstrate the potential usability of lanthanum hydroxide as an excellent As(V) selective adsorbent.
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참고문헌 (30)
참고문헌 신청
US Environmental Protection Agency / Office of Ground Water and Drinking Water
Juillot, F. / 1999 / Remobilization of arsenic from buried wastes at an industrial site:Mineralogical and geochemical control / Applied Geochemistry 14(8):1031~1048
ATSDR (Agency for Toxic Substances and Disease Registry) / 2000 / Toxicological Profile for Arsenic / U.S. Department of Health and Human Services, Pubic Health Service
Jekel, M. / 2000 / Comparison of conventional and new techniques for the removal of arsenic in a full scale water treatment plant / International Water Association, Water Supply 18(1):628~631
Mulligan, C. N. / 2001 / Remediation technologies for metal contaminated soils and groundwater:An evaluation / Engineering Geology 60(1-4):193~207
Juillot, F. / 1999 / Remobilization of arsenic from buried wastes at an industrial site:Mineralogical and geochemical control / Applied Geochemistry 14(8):1031~1048
ATSDR (Agency for Toxic Substances and Disease Registry) / 2000 / Toxicological Profile for Arsenic / U.S. Department of Health and Human Services, Pubic Health Service
Jekel, M. / 2000 / Comparison of conventional and new techniques for the removal of arsenic in a full scale water treatment plant / International Water Association, Water Supply 18(1):628~631
Mulligan, C. N. / 2001 / Remediation technologies for metal contaminated soils and groundwater:An evaluation / Engineering Geology 60(1-4):193~207
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