안상우 유지영 최재영 박재우 2024-01-20T20:04:34Z 2024-01-20T20:04:34Z 2021-09-06 2009-12 2289-0971 https://pubs.kist.re.kr/handle/201004/131902 Cadmium (Cd) adsorption onto the activated carbon containing hydroxyapatite (HAP) was investigated in batch experiments and response surface methodology (RSM) using the Box-Behnken methods were applied to the experimental results. Cd adsorption with different HAP mass ratio of from 10% to 30%. With more HAP, Cd was more adsorbed. These results suggest that the higher HAP mass causes an increase of the ion exchange potential of the HAP sorbent. Equilibrium experimental results from Cd adsorption was fitted to Langmuir and Freundlich isotherm models. Cd adsorption on HAP sorbent were found to follow the Freundlich isotherm model well in the initial adsorbate concentration range. Also, Cd adsorption was a function of the HAP mass ratio (x1), initial Cd concentration (x2), and initial pH (x3) from the application of the RSM. Statistical results showed the order of significance of the independent variables to be initial Cd concentration > HAP mass ratio > initial pH. Korean 한국물환경학회 반응표면분석법을 이용한 Hydroxyapatite 첨가 활성탄에서의 Cd 흡착특성에 관한 연구 Adsorption Characterization of Cd by Activated Carbon containing Hydroxyapatite using Response Surface Methodology (RSM) Article 2 한국물환경학회지, v.25, no.6, pp.943 - 950 한국물환경학회지 25 6 943 950 kci ART001394334 Activated carbon Adsoption Cadimium Hydroxyapatite Response surface methodology