Use of the ion-exchange properties of layered double hydroxides for water purification

被引：50

作者：

Houri, B

Legrouri, A

Barroug, A

Forano, C

Besse, JP

机构：

[1] Al Akhawayn Univ, Sch Sci & Engn, Ifrane 53000, Morocco

[2] Univ Cadi Ayyad, Fac Sci & Tech, Dept Chim & Environm, Beni Mellal 23000, Morocco

[3] Univ Cadi Ayyad, Fac Sci Semlalia, Chim Phys Lab, Marrakech 40001, Morocco

[4] Univ Clermont Ferrand 2, UPRES A 6002, Lab Mat Inorgan, F-63177 Clermont Ferrand, France

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1998年 / 63卷 / 05期

关键词：

waste water treatment; ion exchange; intercalation; hydrotalcite phase; chromates; dichromates;

D O I：

10.1135/cccc19980732

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The sorption of chromate and dichromate ions by a [Zn-Al-Cl] layered double hydroxide was investigated. The anionic clay, prepared by coprecipitation at pH 8, was found to be pure upon characterization by X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetry and to have low BET surface area and small pore volume. The interaction of the clay with both chromate and dichromate ions has been studied by UV-VIS spectroscopy. The treatment of water containing 15-300 ppm of CrO42- or Cr2O72- was successful. The sorption capacities of the clay for CrO42- and Cr2O72- are close to 1 and 0.6 mmol/g, respectively.

引用

页码：732 / 740

页数：9

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[1] Studies on removal and recovery of Cr(VI) from electroplating wastes [J].