INVESTIGATION OF SORPTION OF Cu2+, Zn2+ and Cd2+ IONS BY A COMPOSITE ADSORBENT OBTAINED FROM BENTONITE-LIKE CLAY AND HYDROXYAPATITE

被引：0

作者：

Vezentsev, A., I ^{[1
]}

Dang Minh Thuy ^{[1
,2
]}

Peristaya, L. F. ^{[1
]}

Peristyj, V. A. ^{[1
]}

Alateya, A. T. ^{[1
]}

Pham Thanh Minh ^{[1
,3
]}

机构：

[1] Belgorod State Natl Res Univ, 85 Pobedy St, Belgorod 308015, Russia

[2] Russian Vietnamese Trop Ctr, Hanoi, Vietnam

[3] Nucl Res Inst, Da Lat, Vietnam

来源：

JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY | 2019年 / 14卷 / 01期

关键词：

Adsorption; Composite adsorbent; Heavy metal ions; Hydroxyapatite; Montmorillonite; Water purification; AQUEOUS-SOLUTIONS; HEAVY-METALS; SINGLE-METAL; REMOVAL; ADSORPTION; COPPER; FLUORIDE; CU(II); WATER;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The results of the measuring of pH(pzc) (point zero charge) of the surface of adsorbents by potentiometric titration are presented. It was found that the pH(pzc) of the bentonite-like clay of the Tam Bo (Lam Dong, Vietnam), the synthesized hydroxyapatite and composite adsorbents based on them is 5.7, 6.9 and 6.8, respectively. A study was made of the dependence of the efficiency of purification of model aqueous solutions on Cu2+, Zn2+ and Cd2+ ions by various adsorbents on the pH values. It was found that the optimal pH values are in the limits of 4 - 6. The highest adsorption capacity of the composite adsorbent towards Cu2+, Zn2+ and Cd2+ ions are 0.73, 0.71 and 0.81 mmol/g respectively, which is over 2.79, 1.92 and 2.43 times higher than the Lam Dong bentonite-like clay.

引用

页码：520 / 530

页数：11

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