논문 상세보기
pp.55-64
This study evaluated the potential of two unmodified seaweeds, Sargassum fulvellumand Ishige okamurae, as low-cost adsorbents for aqueous phosphate removal under low phosphorus conditions. Batch tests (25±1°C; initial phosphorus concentration, approximately 0.67 mg/L) were performed for up to 72 h at adsorbent doses of 1.0, 5.0. and 10.0 g/L, and time-series concentration profiles showed a rapid decrease within the first 12-24 h, followed by an approach to equilibrium. The removal efficiency increased with the seaweed dose; after 72 h, the maxima were approximately 12.0% for I. okamuraeand 12.4% for S. fulvellum, the mass-specific adsorption capacity (q) was relatively higher for I. okamuraeat the lowest dose. The adsorption data were obtained at a single initial concentration, equilibrium isotherm analysis was performed on an exploratory basis. The Freundlich and Langmuir isotherms yielded low coefficients of determination, establishing the basic performance of unmodified seaweeds at low phosphate levels. Overall, these results indicate the need forkinetic analysis using time-dependent models, together with material optimization (i.e., surface modification), to enhance the capacity and practical applicability of seaweeds for phosphorus adsorption.
Materials and Methods
Chemicals
시료의 준비 및 전처리
흡착 실험
해조류의 물리화학적 특성 분석
Results and Discussion
ATR FT-IR 분석
SEM 분석
BET 분석
인 농도의 시간 경과에 따른 변화
시간 경과에 따른 단위 질량당 인 흡착량의 변화
해조류 흡착물질 투입량에 따른 인 제거 효율 최종 제거율비교
Freundlich 및 Langmuir 등온식을 활용한 Sar 및 Ish 기반 흡착제의 흡착 특성 분석
흡착 특성에 대한 고찰 및 실험적 한계 분석
Conclusion
국문요약
Acknowledgement
Conflict of interests
ORCID
References
