Preparation of anionic-cationic co-substituted hydroxyapatite for heavy metal removal: Performance and mechanisms

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成果类型：

期刊论文

作者：

Zeng, Rongying;Tang, Wenqing*;Ding, Chunxia;Yang, Lihua;Gong, Daoxin*;...

通讯作者：

Tang, Wenqing;Gong, Daoxin

作者机构：

[Tang, Wenqing; Zeng, Rongying; Kang, Zhuo] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat, Coll Hunan Prov, Hengyang 421008, Peoples R China.

[Ding, Chunxia; Gong, Daoxin; Yang, Lihua; Zeng, Rongying] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

[He, Zhimin; Wu, Yuming; Zeng, Rongying] Hengyang Normal Univ, Nanyue Coll, Hengyang 421008, Peoples R China.

[Tang, Wenqing] Xiangtan Univ, Coll Environm & Resources, Xiangtan 411105, Hunan, Peoples R China.

通讯机构：

[Tang, Wenqing; Gong, Daoxin] H

Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat, Coll Hunan Prov, Hengyang 421008, Peoples R China.

Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

语种：

英文

关键词：

Na-SiCHAP;Lead ion;Cadmium ion;Adsorption isotherm;Adsorption mechanism

期刊：

Journal of Solid State Chemistry

ISSN：

0022-4596

年：

2019

卷：

280

页码：

5-14

DOI：

10.1016/j.jssc.2019.120960

基金类别：

Research Center of Environmental Eduation, Key Research Base of Philosophy & Social Sciences in Hunan Province [HJ15k01]; Key Laboratory of Functional Organometallic Materials of Hunan Province College [GN18K02, GN19K06]; National Training Program of Innovation and Entrepreneurship for Under-graduate [CX1814]; College students' research learning and innovative experimental program of Hunan Province [CX1814, 2018255773]

机构署名：

本校为第一且通讯机构

院系归属：

化学与材料科学学院

南岳学院

摘要：

Sodium, silicate and carbonate ions co-substituted hydroxyapatite adsorbent (Na-SiCHAP) was prepared by sonochemistry coprecipitation. The effect of a variety of parameters on the adsorption of Pb2+ and Cd2+ by Na-SiCHAP were performed. The adsorption process of heavy metal ions was found to follow the pseudo-secondorder kinetic equation and Langmuir adsorption model. The maximum absorption capacity (Q(m)) of Na-SiCHAP for Pb2+ and Cd2+ ions in 303 K were 698.68 and 129.60 mg g(-1) according to the Langmuir adsorption model, respectively. The thermodynamic parameters (Delta G(0) 0, Delta H-0 >...

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Preparation of anionic-cationic co-substituted hydroxyapatite for heavy metal removal: Performance and mechanisms

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