Characterization of Rice Hull Ash and Its Performance in Turbidity Removal From Water

This study characterizes the locally obtained samples of rice hull ash and investigates its performance on turbidity removal from water. Four samples of this material were studied, namely, unwashed parboiled rice hull ash (UPRHA), washed parboiled rice hull ash (WPRHA), unwashed unparboiled rice hul...

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Bibliographic Details
Published in:Particulate science and technology 2014-07, Vol.32 (4), p.329-333
Main Authors: Adams, F. V., Ikotun, B. D., Patrick, D. O., Mulaba-Bafubiandi, A. F.
Format: Article
Language:English
Subjects:
Agglomeration
Ashes
Chemical composition
Fourier analysis
Hulls
Hulls (structures)
Infrared spectroscopy
Rice
rice hull ash
Scanning electron microscopy
SEM
Turbidity
Water
XRD
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Summary:This study characterizes the locally obtained samples of rice hull ash and investigates its performance on turbidity removal from water. Four samples of this material were studied, namely, unwashed parboiled rice hull ash (UPRHA), washed parboiled rice hull ash (WPRHA), unwashed unparboiled rice hull ash (UUPRHA), and washed unparboiled rice hull ash (WUPRHA). Scanning electron microscopy (SEM), x-ray diffractometer (XRD), and Fourier infrared spectroscopy (FTIR) were carried out to characterize these samples. A filtration process was carried out to investigate the effectiveness of the rice hull ash medium in removing water turbidity. The XRD results showed the silica, which is present in the ashes, to be cristobalite, quartz, and tridymite. The silica contents of the UUPRHA and WUPRHA were observed to be 77.10% and 98.24%, respectively, while those of UPRHA and WPRHA were 79.07% and 94.97%, respectively. The SEM images showed agglomeration of ash particles after the ashes were washed. The washed RHA samples showed improved pH, a good percentage of turbidity removal (
ISSN:0272-6351
1548-0046
DOI:10.1080/02726351.2013.867001