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Research Article
Xun Gong
Huazhong University of Science and Technology
Corresponding Author
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This work is licensed under a CC BY 4.0 License. Read Full License
For forming adsorbents, the stability of cyclic adsorption is as important as the adsorption properties. In this work, A shell-type self-assembled mineralized adsorbent based on Ca-alginate was synthesized for Hg(II) adsorption. The synthesis process consists of gelation of Ca-based spherical polymer template (CAB) and rate-controlled self-assembly mineralization in bicarbonate solution. A shell-type porous crystal layer is proved to be formed on the surface of the organic polymer template by rate-controlled self-assembly mineralization. The single-factor experiment demonstrates that 1% (MCAB-1) is the optimal concentration of bicarbonate. A maximum adsorption capacity, 48 ± 4 mg/g of MCAB-1 was observed at a pH = 5 in batch test, which was 2.67 times that of the unmodified one, CAB, 18 ± 1 mg/g. Long duration (10 h) adsorption tests showed that MCAB-1 exhibited remarkable performance stability and anti-wear ability (43.2 % removal efficiency and 74.3 % mass retention, compared to 2.7 % and 38.6 % of CAB at pH = 3, respectively). The results show that the adsorption and wear resistance of the modified materials are improved obviously.
Keywords
Hg(II) adsorption, Ca-alginate, forming absorbent, shell-type, self-assembly mineralization
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research Article
Xun Gong
Huazhong University of Science and Technology
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 25 Oct, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Energy Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
For forming adsorbents, the stability of cyclic adsorption is as important as the adsorption properties. In this work, A shell-type self-assembled mineralized adsorbent based on Ca-alginate was synthesized for Hg(II) adsorption. The synthesis process consists of gelation of Ca-based spherical polymer template (CAB) and rate-controlled self-assembly mineralization in bicarbonate solution. A shell-type porous crystal layer is proved to be formed on the surface of the organic polymer template by rate-controlled self-assembly mineralization. The single-factor experiment demonstrates that 1% (MCAB-1) is the optimal concentration of bicarbonate. A maximum adsorption capacity, 48 ± 4 mg/g of MCAB-1 was observed at a pH = 5 in batch test, which was 2.67 times that of the unmodified one, CAB, 18 ± 1 mg/g. Long duration (10 h) adsorption tests showed that MCAB-1 exhibited remarkable performance stability and anti-wear ability (43.2 % removal efficiency and 74.3 % mass retention, compared to 2.7 % and 38.6 % of CAB at pH = 3, respectively). The results show that the adsorption and wear resistance of the modified materials are improved obviously.
This preprint is available for download as a PDF.
This is a list of supplementary files associated with this preprint. Click to download.
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