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CONGO RED REMOVAL FROM WATER BY ZNAL-LDH OBTAINED FROM ZINC ASH

Lavinia Lupa, Alin Golban, Laura Cocheci, Rodica Pode

First published: 2017-06-20https://doi.org/10.5593/sgem2017/52/s20.028View metrics

Abstract

The aim of this work is the study of Congo Red removal from water by adsorption onto Zn4Al-CO3 type layered double hydroxide prepared from zinc ash. The preparation consist in dissolution of zinc ash with hydrochloric acid followed by synthesis of LDH by co-precipitation of zinc chloride with aluminum salt in alkaline media. The prepared LDH and the calcined product were utilized as adsorbents of azo dye Congo Red from water. Despite that the materials were prepared from a waste, their performances as adsorbents are comparative with other similar materials prepared from analytical grade reagents. The structural analysis of the materials after Congo Red uptake reveals that the adsorption process appeared to be surface adsorption.

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Publication details

Title
CONGO RED REMOVAL FROM WATER BY ZNAL-LDH OBTAINED FROM ZINC ASH
Authors
Lavinia Lupa, Alin Golban, Laura Cocheci, Rodica Pode
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Ecology, Economics, Education and Legislation
Publisher
STEF92 Technology
Year
2017
Pages
209-216
SWS Citekey
Lupa201720209216
ISSN
1314-2704
ISBN
978-619-7408-09-6
Language
en
Publication type
Conference Paper
Keywords
adsorptiondyelayered double hydroxidezinc ash
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