Purification of anionic surfactant contaminated water using mg/fe layered Double hydroxide. · Electronic Theses and Dissertations

Author: Jamari, Kudakwashe D.
Title: Purification of anionic surfactant contaminated water using mg/fe layered Double hydroxide.
Abstract: The properties of LDHs have proved useful in the elimination of poisonous anions in water
bodies and environment. Credit id given to their anion exchange properties and reformation
effect. This thesis explores the synthesis, ability of anion sorption by reformation effect and
characterization of the materials. The hydrotalcite-like material was successfully synthesized
from magnesium and iron salts by co-precipitation. The resulting products were characterized
by FTIR to confirm the functional groups present. The synthesized LDH was thermally
decomposed at 300°C, 450°C and 500°C. The obtained mixed metal oxide was immersed in a
solution containing DS anions. Preliminary analysis of the elimination of DS by the Mg/Fe LDH
were carried out and characterized using FTIR and UV- vis. From UV analysis, the changes in
concentration of DS with time was used to calculate the efficiency of the mixed metal oxide
obtained at respective temperatures. At 300°C efficiency was 48.6%, 59.1% and 90.2% at 500°C
and 450°C respectively. The LDH material proved to be a suitable adsorbent.
Date: 2019
Publisher: BUSE
Keywords: Surfactants; Purification of anionic surfactant
Supervisor: Dr Machingauta, C.