| Adsorption mechanism of Pb(II) and Ni(II) from aqueous solution by TiO2 nanoparticles: kinetics, isotherms and thermodynamic studies | |
Khan, Shamshad1,2; Zhang Dan1,2 ; He Haiyan1,2,3
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| Corresponding Author | Zhang Dan(daniezhang@imde.ac.cn) |
| 2019-07-01 | |
| Source Publication | DESALINATION AND WATER TREATMENT
 |
| ISSN | 1944-3994 |
| EISSN | 1944-3986 |
| Volume | 155Pages:237-249 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | In this work, TiO 2 nanoparticles (TNPs) were used as an absorbent to remove Pb(II) and Ni(II) from aqueous solution. The effect of pH, ionic strength (IS), humic acid (HA), contact time, foreign ions and temperature on the adsorption of Pb(II) and Ni(II) onto TNPs were examined by batch technique. The results showed that the adsorption of Pb(II) and Ni(II) was dominated by outer-sphere surface complexation at pH < 6.0, whereas, inner-sphere surface complexation was the main absorption mechanism at pH > 6.0. The maximum absorption capacity of Pb(II) and Ni(II) onto TNPs calculated from a Langmuir model was 40.00 and 26.32 mg g-1, respectively at 303 K, exhibiting higher efficiency for Pb(II) absorption than Ni(II). The thermodynamic parameters (.H degrees,.S degrees and.G degrees) of Pb(II) and Ni(II) onto TNPs were calculated from the temperature dependent absorption, and their results demonstrated that absorption was endothermic and spontaneous. This analysis demonstrates that the TNPs can be utilized as an appropriate absorbent for the absorption of metal ions from solutions. |
| Keyword | Absorption Ionic strength TiO2 nanoparticles Heavy-metal ions removal |
| DOI | 10.1080/01431161.2019.1577578 |
| Indexed By | SCI |
| WOS Keyword | HEAVY-METAL IONS ; AL2O3 NANOPARTICLES ; TITANATE NANOTUBES ; EFFICIENT REMOVAL ; CHELATING RESIN ; BEHAVIOR ; ACID ; PHOTOCATALYSIS ; EQUILIBRIUM ; BIOSORPTION |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41571315] ; CAS President's International Fellowship Initiative China[2017PCOO59] |
| WOS Research Area | Engineering ; Water Resources |
| WOS Subject | Engineering, Chemical ; Water Resources |
| WOS ID | WOS:000470121900025 |
| Funding Organization | National Natural Science Foundation of China ; CAS President's International Fellowship Initiative China |
| Publisher | DESALINATION PUBL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/26416 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | Zhang Dan |
| Affiliation | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Lab Mt Environm Divers & Control, Chengdu 610041, Sichuan, Peoples R China;; 2.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China;; 3.Univ Chinese Acad Sci, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Khan, Shamshad,Zhang Dan,He Haiyan. Adsorption mechanism of Pb(II) and Ni(II) from aqueous solution by TiO2 nanoparticles: kinetics, isotherms and thermodynamic studies[J]. DESALINATION AND WATER TREATMENT,2019,155:237-249. |
| APA | Khan, Shamshad,Zhang Dan,&He Haiyan.(2019).Adsorption mechanism of Pb(II) and Ni(II) from aqueous solution by TiO2 nanoparticles: kinetics, isotherms and thermodynamic studies.DESALINATION AND WATER TREATMENT,155,237-249. |
| MLA | Khan, Shamshad,et al."Adsorption mechanism of Pb(II) and Ni(II) from aqueous solution by TiO2 nanoparticles: kinetics, isotherms and thermodynamic studies".DESALINATION AND WATER TREATMENT 155(2019):237-249. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 155_2019_237.pdf（171KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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