MODIFIED CLINOPTILOLITE USED FOR REMOVING AZOMETHINES FROM WASTEWATERS. I THE EFFECT OF THE TIME OF NITRIC ACID TREATMENT ON CLINOPTILOLITE PROPERTIES

被引：0

作者：

Cobzaru, Claudia ^{[1
]}

Cernatescu, Corina ^{[1
]}

Marinoiu, Adriana ^{[2
]}

机构：

[1] Gheorghe Asachi Tech Univ Iasi, Fac Chem Engn & Environm Protect, Iasi 70050, Romania

[2] Natl RD Inst Cryogen & Isotop Technol ICIT, Rm Valcea, Romania

来源：

REVUE ROUMAINE DE CHIMIE | 2014年 / 59卷 / 6-7期

关键词：

REACTIVE AZO DYES; AQUEOUS-SOLUTIONS; NATURAL CLINOPTILOLITE; METHYL VIOLET; ADSORPTION; IONS; ZEOLITES; WATER; EQUILIBRIUM; KINETICS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, the effect of the time of treatment with the nitric acid on the adsorption properties of native clinoptilolite and its Na form, destined as adsorbent for removing of azomethines from wastewater was studied. The exchange solutions for Na+ cations were analysed by flame photometry and the XRD, TPD and N-2 adsorption methods were used for structural characterization of clinoptilolite samples after the acid treatment. The results show that the treatment with nitric acid for 24 hours affects substantially the adsorption properties of clinoptilolite obtaining a product with a specific area and porous volume higher than the starting material.

引用

页码：599 / 604

页数：6