A comparative study on dynamic Hg(II) and MeHg(II) removal by functionalized agrowaste adsorbent: breakthrough analysis and adsorber design

The adsorption dynamics of inorganic mercury, Hg(II) and organic methylmercury, MeHg(II) removal by low-cost reactive agrowaste adsorbents namely CP-Pure, CP-MPTES and CP-RR was investigated in a fixed-bed adsorber. The results show that the breakthrough and saturation times were delayed with decrea...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2019, 36(7), 232, pp.1069-1081
Main Authors: Saman, Norasikin, Kong, Helen, Mohtar, Safia Syazana, Johari, Khairiraihanna, Mansor, Azmi Fadziyana, Hassan, Onn, Ali, Noorhalieza, Mat, Hanapi
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Agricultural wastes
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Comparative studies
Computer simulation
Environmental Engineering
Flow velocity
Industrial Chemistry/Chemical Engineering
Isotherms
Materials Science
Mercury (metal)
Mercury compounds
Regeneration
화학공학
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Summary:The adsorption dynamics of inorganic mercury, Hg(II) and organic methylmercury, MeHg(II) removal by low-cost reactive agrowaste adsorbents namely CP-Pure, CP-MPTES and CP-RR was investigated in a fixed-bed adsorber. The results show that the breakthrough and saturation times were delayed with decreasing flow rate (F) and initial concentration (C o ), and increasing bed height (Z). The Hg(II) possessed better adsorption performance than MeHg(II). The isotherm and kinetic model analyses of adsorption data followed the Temkin isotherm and the pseudosecond order kinetic models, respectively. The breakthrough curve was simulated well by the Thomas and Yoon-Nelson models, and then was further used for scale-up studies. The empty bed contact time (EBCT) concept was successfully demonstrated for the adsorber design and scale-up studies. The regeneration studies showed that the regenerated CP-Pure and CP-MPTES have a high regeneration efficiency up to third adsorption cycle.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-019-0285-z