| Title | Highly effective sequestration of Cd(II) from aqueous solution using marine diatom biomass: Adsorption performances and mechanism |
| Author | |
| Corresponding Author | Wang, Xin |
| Publication Years | 2023-02-22
|
| DOI | |
| Source Title | |
| EISSN | 2296-665X
|
| Volume | 11 |
| Abstract | Highly efficient, economic feasible and environmentally friendly adsorbents have been a research hotspot for Cd(II) sequestration. In this study, various nonliving marine diatom biomass were prepared for Cd(II) removal. The Cd(II) adsorption properties of the diatom biomass was unveiled by adsorption kinetic, isotherm and thermodynamic analysis, and the adsorption mechanism was revealed using spectrometric identification methods. Results suggested that nonliving marine diatom biomass (Chaetoceros, Nitzschia, and Thalassiosira sp.) could efficiently remove Cd(II) from aqueous solution, with nonliving Nitzschia possessing the highest adsorption capacity. The adsorption capacity of nonliving Nitzschia was 289-430 mg g(-1) (288-308 K) in the absence of ionic competition and under low turbidity conditions, which was much higher than that of most of adsorbents of great concern. The kinetic, isotherm and thermodynamic analysis suggested the adsorption of Cd(II) was a spontaneous, endothermic and chemisorption involved process. Moreover, inorganic salts and turbidity showed negative effects on Cd(II) adsorption, whereas humic acid showed a positive effect. Adsorption mechanism analysis demonstrated that amine and pyrrolic nitrogen groups were responsible for Cd(II) adsorption. It is also worth noting that organics leaching during adsorption would also affect chemical bonds distribution on the biomass, which should be taken into account when elucidating the heavy metal adsorption mechanism of bio-adsorbents. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | First
; Corresponding
|
| Funding Project | Key R&D Program of Shandong Province, China[2022SFGC0304]
; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N532]
; Shenzhen Government Related Supporting Fund[KYTDPT20181011104002]
; SUSTech-RIGEL Joint Ecological Laboratory[Y01422304]
|
| WOS Research Area | Environmental Sciences & Ecology
|
| WOS Subject | Environmental Sciences
|
| WOS Accession No | WOS:000946060700001
|
| Publisher | |
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/513384 |
| Department | Department of Chemistry 创新创业学院 |
| Affiliation | 1.Southern Univ Sci & Technol, Coll Sci, Dept Chem, Shenzhen, Peoples R China 2.Shenzhen Grad Sch Peking Univ, Sch Environm & Energy, Shenzhen, Peoples R China 3.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, Shenzhen, Peoples R China |
| First Author Affilication | Department of Chemistry |
| Corresponding Author Affilication | Department of Chemistry |
| First Author's First Affilication | Department of Chemistry |
| Recommended Citation GB/T 7714 |
Wang, Xin,Wang, Jingfeng,Zhang, Shanfa,et al. Highly effective sequestration of Cd(II) from aqueous solution using marine diatom biomass: Adsorption performances and mechanism[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2023,11.
|
| APA |
Wang, Xin,Wang, Jingfeng,Zhang, Shanfa,&Li, Junguo.(2023).Highly effective sequestration of Cd(II) from aqueous solution using marine diatom biomass: Adsorption performances and mechanism.FRONTIERS IN ENVIRONMENTAL SCIENCE,11.
|
| MLA |
Wang, Xin,et al."Highly effective sequestration of Cd(II) from aqueous solution using marine diatom biomass: Adsorption performances and mechanism".FRONTIERS IN ENVIRONMENTAL SCIENCE 11(2023).
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