Polyvinyl alcohol–alginate ferrophoto gels for mercury(II) removal

Rahman, Azura Hanis A.; Teo, Chee Loong; Idris, Ani; Misran, Effaliza; Leong, Siti Asma’ Nikmat

doi:10.1016/j.jiec.2015.09.036

Cited by 7 publications

(1 citation statement)

References 32 publications

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“…Mercuric species in solution cannot be bio-or chemically degraded (Bota et al, 2002). However, the possibility of the sorbent being reduced or not is very dependent on its standard reduction potential after the adsorption process (Rahman, et al, 2016). pH determines the specification of metal ions and therefore affects the ability of Hg (II) to be adsorbed (Rahman, et al, 2016) onto the ZnO/ZnFe 2 O 4 materials.…”

Section: Introductionmentioning

confidence: 99%

CHARACTERIZATION-PERFORMANCE OF ZnO AND ZnO/ZnFe2O4 CATALYST USING ARTIFICIAL AND SOLAR LIGHT FOR MERCURY (II) REDUCTION

Coelho

Neto

Ivashita

et al. 2019

Braz. J. Chem. Eng.

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This study describes the application of ZnO commercial oxide and ZnO/ZnFe 2 O 4 mixed oxides to reduce the mercury ion (Hg 2+) in the aqueous phase. The catalysts synthesized were characterized by thermogravimetric analysis, adsorption and desorption of N 2 , scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, photoacoustic spectroscopy and Mössbauer spectroscopy. The heterogeneous photocatalysis process was studied in synthetic effluent treatment containing mercury chloride (HgCl 2) in a batch and solar reactor. The results indicated that commercial ZnO catalyst totally reduced the Hg (II), in all conditions and reaction systems studied. On the other hand, for the mixed oxides (ZnO/ZnFe 2 O 4), there was a decrease in the reduction efficiency in the batch reactor, indicating no ability to reduce Hg(II) in the presence of sunlight.

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Section: Introductionmentioning

confidence: 99%