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掺铁碳羟基磷灰石复合物对铅离子废水的吸附

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成果类型:
期刊论文
作者:
曾荣英;罗春香;龚道新;唐文清;冯泳兰;...
通讯作者:
Gong, D.
作者机构:
[龚道新; 罗春香] College of Resources & Environment, Hunan Agricultural University, Changsha, 410128, China
Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China
Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China
[冯泳兰; 唐文清; 彭刚] Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China, Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China
[Zeng R.] College of Resources & Environment, Hunan Agricultural University, Changsha, 410128, China, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China
通讯机构:
[Gong, D.] C
College of Resources & Environment, Hunan Agricultural University, Changsha, China
语种:
中文
关键词:
掺铁碳羟基磷灰石复合物;吸附等温模型;动力学;热力学
关键词(英文):
PB2+;ferriferrous oxide / carbonate hydroxyapatite(Fe-CHAP) composite;Pb2+;adsorption isotherms;kinetic;thermodynamics
期刊:
环境工程学报
ISSN:
1673-9108
年:
2015
卷:
9
期:
10
页码:
4643-4649
基金类别:
13JJ9018:湖南省自然科学基金 :湖南省重点学科建设项目
机构署名:
本校为其他机构
院系归属:
化学与材料科学学院
摘要:
采用废弃蛋壳和自制纳米Fe_3O_4为原材料,采用水热法制备Fe_3O_4/碳羟基磷灰石复合物(简称掺铁碳羟基磷灰石复合物,Fe-CHAP),将其用于吸附含Pb~(2+)废水。通过BET比表面积、FTIR和XRD等表征手段对样品进行测试,分别探讨了影响吸附性能的主要因素,如pH、吸附剂用量、吸附时间、Pb~(2+)初始浓度以及反应温度等。研究结果表明,在pH=5.0、0.03 g Fe-CHAP、150 mg/L Pb~(2+)初始浓度、作用时间45 min和反应温度323 K等优化条件下,Fe-CHAP对Pb~(2+)的去除率和吸附容量分别为98.59%和492.95mg/g。Langmuir等温模型较好地拟合了吸附实验数据,相关系数高达0.99,饱和吸附容量高达1 111.11 mg/g;准二级动力...
摘要(英文):
Fe3O4/carbonate hydroxyapatite(Fe-CHAP) composite was prepared via hydrothermal method by waste egg shells and Fe3O4 nanoparticles as raw materials. Fe-CHAP composite samples were used as sorbents to adsorb Pb2+ ions from aqueous solution. The Fe-CHAP was characterized by BET surface area, Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The effect of experimental parameters, such as pH, adsorbent dosage, contact time, initial Pb2+ concentration and temperature were examined. The results showed that the removal efficiency a...

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