Treatment of Cd2+ and Cu2+ Ions Using Modified Apatite Ore

被引：21

作者：

Nguyen, Phuong Thu ^{[1
]}

Nguyen, Xuyen Thi ^{[1
]}

Nguyen, Trang Van ^{[1
,2
]}

Nguyen, Thom Thi ^{[1
]}

Vu, Thai Quoc ^{[1
]}

Nguyen, Huy Trung ^{[1
]}

Pham, Nam Thi ^{[1
]}

Dinh, Thanh Mai ^{[1
,2
,3
]}

机构：

[1] Vietnam Acad Sci & Technol, Inst Trop Technol, 18 Hoang Quoc Viet, Hanoi 10000, Vietnam

[2] Vietnam Acad Sci & Technol, Grad Univ Sci & Technol, 18 Hoang Quoc Viet, Hanoi 10000, Vietnam

[3] Vietnam Acad Sci & Technol, Univ Sci & Technol Hanoi, 18 Hoang Quoc Viet, Hanoi 10000, Vietnam

来源：

JOURNAL OF CHEMISTRY | 2020年 / 2020卷

关键词：

CONGO RED-DYE; AQUEOUS-SOLUTION; HEAVY-METALS; REMOVAL; EQUILIBRIUM; HYDROXYAPATITE; COMPOSITE; BEHAVIOR; SORPTION; SINGLE;

D O I：

10.1155/2020/6527197

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Apatite ore from Lao Cai (Vietnam) has large reserves and low prices. Its main component is fluorapatite. The purification and modification of apatite ore can produce a material that can be used as an absorbent for heavy metals with high efficiency. The molecular structure, phase component, specific surface area, element component, and morphology of modified apatite ore from Lao Cai province, Vietnam, were characterized by IR, XRD, BET, EDX, and SEM methods. The IR and XRD results show that the modified process transformed apatite ore from fluorapatite to nanohydroxyapatite. The specific surface area of modified apatite ore (100.79 m(2)/g) is much higher than the original ore (3.97 m(2)/g). The modified apatite ore was used to adsorb Cd2+ and Cu2+ ions in water. The effect of adsorbent mass, pH, contact time, and initial concentration of Cd2+ and Cu2+ on the adsorption efficiency and capacity was investigated. Besides, the isotherm adsorption model was determined using Freundlich and Langmuir theories.

引用

页数：12

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