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Citation: TANG Wen-Qing, ZENG Rong-Ying, FENG Yong-Lan, YU Run-Lan, ZENG Guang-Ming, LI Xiao-Ming. Adsorption Characteristic of Carbonate Hydroxylapatite for Cu²⁺ from Aqueous Solution at Different Ca/P Molar Ratios[J]. Chinese Journal of Applied Chemistry, ;2009, 26(7): 807-810. shu

Adsorption Characteristic of Carbonate Hydroxylapatite for Cu²⁺ from Aqueous Solution at Different Ca/P Molar Ratios

1.
a Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008;
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b School of Minerals Processing and Bio-engineering, Central South University, Changsha;
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c College of Environmental Science and Engineering, Hunan University, Changsha

Corresponding author: TANG Wen-Qing,
Received Date: 24 July 2008
Available Online: 10 October 2008
Fund Project: 新世纪优秀人才计划支持项目(NCET-04-0770) (NCET-04-0770)湖南省自然科学基金资助项目(07JJ6013) (07JJ6013)

The adsorption of Cu²⁺ from aqueous solution by home-made carbonate hydroxylapatite(CHAP) synthesized from abandoned eggshell with urea as the addititive was characterized by FT-IR,SEM and EDS.Factors that might influence the adsorption performance were investigated,including pH values,temperature and adsorption period in aqueous solution.The results show that the molar ratio of Ca/P in CHAP and the specific surface area increased with the amount of urea,and the absorption capacity became greater because Ca/P ratio of CHAP was higher.Absorption capacity of CHAP(Ca/P ratio,1.80) for Cu²⁺ from aqueous solution reached 37.66 mg/g when pH was 7,the temperature was 40 ℃,the reaction time was 60 min.The distribution coefficient between solid phase and water increased with the increase of Ca/P ratio of CHAP,which improves the absorption capacity..
- carbonate hydroxyapatite,
- Ca/P molar ratio,
- copper ion,
- adsorption characteristic
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Adsorption Characteristic of Carbonate Hydroxylapatite for Cu²⁺ from Aqueous Solution at Different Ca/P Molar Ratios