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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.9
- 수록면
- 133 - 138 (6page)
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Polyvinyl alcohol/alginate hydrogel beads containing Mg-Al layered double hydroxide (LDH-PVA/alginate beads) were synthesized for phosphate removal. Results showed that blending PVA with the LDH-alginate beads significantly improved their stability in a phosphate solution. The kinetic reaction in LDH-PVA/alginate beads reached equilibrium at 12 hr-post reaction with 99.2% removal. The amount of phosphate removed at equilibrium (qe) was determined to be 0.389mgP/g. The equilibrium data were described well by the Freundlich isotherm with the distribution coefficient (KF, 0.638) and the constant (n, 0.396). Phosphate removal in LDH-PVA/alginate beads was not sensitive to solution pH. Also, the removal capacity of LDH-PVA/alginate beads (qe, 1.543mgP/g) was two orders of magnitude greater than that of PVA/alginate beads (qe, 0.016mgP/g) in column experiments. This study demonstrates that LDH-PVA/alginate beads with a higher chemical stability against phosphate compared to LDH-alginate beads have the potential for phosphate removal as adsorptive media.
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참고문헌 (27)
참고문헌 신청
1. [학술지(정기간행물)] - Goh KH / 2008 / Application of layered double hydroxides for removal of oxyanions: a review / Water Res 42 : 1343 ~ 1368
2. [학술지(정기간행물)] - Ookubo A / 1993 / Preparation and phosphate ion-exchange properties of a hydrotalcite-like compound / Langmuir 9 : 1418 ~ 1422
3. [학술지(정기간행물)] - 신항식 / 1996 / Phosphorus removal by hydrotalcite-like compounds (HTLcs) / WATER SCIENCE AND TECHNOLOGY 34 (1-2) : 161 ~ 168
4. [학술지(정기간행물)] - Badreddine M / 1999 / Ion exchange of different phosphate ions into the zincaluminium-chloride layered double hydroxide / Mater. Lett 38 : 391 ~ 395
5. [학술지(정기간행물)] - Cheng X / 2009 / Phosphate adsorption from sewage sludge filtrate using zincaluminum layered double hydroxides / J. Hazard. Mater 169 : 958 ~ 964
2. [학술지(정기간행물)] - Ookubo A / 1993 / Preparation and phosphate ion-exchange properties of a hydrotalcite-like compound / Langmuir 9 : 1418 ~ 1422
3. [학술지(정기간행물)] - 신항식 / 1996 / Phosphorus removal by hydrotalcite-like compounds (HTLcs) / WATER SCIENCE AND TECHNOLOGY 34 (1-2) : 161 ~ 168
4. [학술지(정기간행물)] - Badreddine M / 1999 / Ion exchange of different phosphate ions into the zincaluminium-chloride layered double hydroxide / Mater. Lett 38 : 391 ~ 395
5. [학술지(정기간행물)] - Cheng X / 2009 / Phosphate adsorption from sewage sludge filtrate using zincaluminum layered double hydroxides / J. Hazard. Mater 169 : 958 ~ 964
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