Mercury Adsorption by Ca-Based Shell-Type Polymers Synthesized by Self-Assembly Mineralization.

Yang Peng, Chuxuan Zhang, Xiaomin Li, Tianyi Feng, Xun Gong

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Article in Polymers, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Yang PengSchool of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, No. 1, Daxue Road, Xuzhou 221116, China.

Chuxuan ZhangDepartment of Electrical Engineering, Xi'an University of Technology, Xi'an 710054, China.

Xiaomin LiState Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Tianyi FengState Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Xun GongState Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Funding

National Natural Science Foundation of China 52106242National Natural Science Foundation of China 52176188

6 · The paper itself

Abstract

Adsorption is one of the most promising strategies for heavy metal removal. For Hg(II) removal, mineralized Ca-based shell-type self-assembly beads (MCABs) using alginate as organic polymer template were synthesized in this work. The adsorbent preparation consists of gelation of a Ca-based spherical polymer template (CAB) and rate-controlled self-assembly mineralization in bicarbonate solution with various concentrations. The comparative study demonstrates that 1% (MCAB-1) is the optimal concentration of bicarbonate. Based on this condition, the maximum adsorption capacity (48 ± 4 mg/g) of MCAB-1 was observed at pH = 5 in a batch test, which was 2.67 times more than that of the unmodified one, CAB, at 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% for CAB at pH = 3, respectively). The morphology determination showed that a shell-type porous amorphous carbonate layer was formed at the surface of the organic polymer template by rate-controlled self-assembly mineralization. This transition not only promotes the pore structure and activated cation binding functional sites, but also improves the anti-wear ability of materials effectively.

Indexed as

alginate polymer templatecalcium-based adsorbentsheavy metal removalsurface modification

Identifiers

PMID39771306

DOI10.3390/polym16243454

PMCPMC11678989

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