Investigation of the adsorption performance and mechanism of multi-source mineral composite calcination materials on heavy metal ions

被引:5
作者
Yao, Yisong [1 ,2 ,3 ]
Feng, Yali [1 ]
Li, Haoran [2 ,3 ]
Liu, Mengyao [1 ,2 ]
Cui, Yufeng [1 ,2 ]
Xu, Chenglong [1 ,2 ,3 ]
Li, Yunhao [1 ]
Wang, Jianwei [1 ]
机构
[1] Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
[2] Inst Proc Engn, Chinese Acad Sci, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词
Adsorption; Calcination; Evaluation; Heavy metal ions; Mechanism; Multi-source mineral; AQUEOUS-SOLUTION; CU II; REMOVAL; EQUILIBRIUM; ADSORBENTS; PB(II); FABRICATION; EFFICIENCY; CELLULOSE; KINETICS;
D O I
10.1016/j.desal.2024.117847
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
To address the challenges of plume generation and the release of heavy metal ions caused by deep-sea mining operations, this study utilized multi-source minerals, including steel slag (SS), oceanic manganese nodules (OMN), attapulgite (AT), and sawdust (SD), to fabricate a multi-source mineral composite calcination material (MMCCM) through a sintering process, and then the preliminary heavy metal ion adsorption experiment was carried out. The results indicated that both Langmuir and Freundlich models can describe the adsorption behavior of Cu2+ in a single system, while the Freundlich model was more applicable in competitive systems. The adsorption of Co2+ and Ni2+ consistently aligned with the Langmuir model across all systems. The adsorptive behavior conformed to pseudo-second-order kinetics, indicating that chemisorption played a leading role. The intraparticle diffusion was the principal rate-limiting step, and the adsorption process was spontaneous. BET, TGDTG, SEM-EDS, XRD, FT-IR and XPS elucidated that surface physical adsorption, ion exchange, complexation with functional groups, electrostatic attraction, and co-precipitation, which were the predominant adsorption mechanisms for MMCCM. Evaluations of regenerability, economy, security, and suitability demonstrated that MMCCM is an eco-friendly adsorbent, which provides materials and data support for future heavy metal marine sewage treatment, especially for immobilizing heavy metal in deep-sea sediments.
引用
收藏
页数:19
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