Paper Title :Clarification For Hg (II) Removal Mechanism In Ferrihydrite Co-Precipitaion Process By XAFS Analysis
Author :Tatsuya Kato, Takehiro Uchida, Liu, Chiharu Tokoro
Article Citation :Tatsuya Kato ,Takehiro Uchida ,Liu ,Chiharu Tokoro ,
(2016 ) " Clarification For Hg (II) Removal Mechanism In Ferrihydrite Co-Precipitaion Process By XAFS Analysis " ,
International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) ,
pp. 57-60,
Volume-3,Issue-1
Abstract : Inorganic mercury is known as one of the toxic elements and strictly regulated by Japanese effluent standard that
need to be under 0.005 mg/dm3 for discharged water. This value is the lowest among other inorganic toxic elements
regulated in Japan. As a result, high quality method has been required for Hg(II) wastewater treatment. Objective of this
study is to clearify Hg(II) removal mechanism using ferrihydrite in co-precipitation process. Isotherm drawing, X-ray
diffraction (XRD) and X-ray Adsorption Fine Structure (XAFS) analysis were conducted for both co-precipitation and
adsorption processes to investigate the immobilization mechanism at pH 4. These experimental results suggested that the
sorption mechanism of Hg(II) with ferrihydrite was almost the same between co-precipitation and adsorption processes, but
it involved not only surface complexation but also three dimensional uptakes such as surface precipitation.
Index terms- XAFS, Co-precipitation, Hg(II) removal, Ferrihydrite, Isotherm
Type : Research paper
Published : Volume-3,Issue-1
DOIONLINE NO - IJAMCE-IRAJ-DOIONLINE-4052
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Copyright: © Institute of Research and Journals
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Published on 2016-03-17 |
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