@misc{10481/52554,
year = {2014},
url = {http://hdl.handle.net/10481/52554},
abstract = {An extensive experimental work is reported that aims to assess the efficiency in manganese
(Mn) removal from aqueous solution by carbonyl iron microparticles using magnetic
separation techniques. A set of batch experiments are performed to explore the effect of
pH, adsorbent concentration, surface coating and contact time for achieving the highest
Mn removal efficiency. Mn removal efficiency is extremely high (>98%) for pH values larger
than 9 as a result of the chemisorption of Mn oxides onto magnetic microparticles. In
contrast, Mn removal efficiency for pH < 9 was significantly reduced as Mn remains as a
soluble cation. In this manuscript we demonstrate that the efficiency clearly increases
when increasing the adsorbent concentration and when using MnOx(s) coated magnetic
particles instead of bare particles. Desorption rates from Mn-loaded magnetic particles at
different pHs were always lower than 15%. Furthermore, Mn removal efficiency remained
at a very high value (>95%) when reused particles were employed in the adsorption
process.},
organization = {This work was supported by Junta de Andalucı´a projects P10-
RNM-6630 and P11-FQM-7074 (Proyectos de Excelencia, Spain),
and MICINN MAT 2010-15101 project (Spain).},
keywords = {Manganese removal},
keywords = {Magnetic particles},
keywords = {Water quality},
keywords = {Magnetic separation gradient},
title = {The influence of pH on manganese removal by magnetic microparticles in solution},
author = {Funes, Ana Inmaculada and Vicente Álvarez De Manzaneda, María Inmaculada De and Vicente Álvarez-Manzaneda, Juan De and Cruz Pizarro, Luis José},
}