| Humic acid-coated hydrated ferric oxides-polymer nanocomposites for heavy metal removal in water | |
Hao, Liteng; Li, Li ; Yu, Sujuan; Liu, Jingfu
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| 2022-08-15 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| Volume | 834Issue:0Pages:155427 |
| Abstract | Water pollution by toxic heavy metals poses a threat to the environment and human bodies. Herein, a novel hydrated ferric oxide nanoparticle (HFO) based hybrid adsorbent was fabricated for the removal of toxic Cu(II), Cd(II) and Pb(II) from water. HFOs were immobilized into a porous resin D-201, and then this nanocomposite HFO-D201 was coated with humic acid (HA) to enhance the binding sites of target metals. Both HFOs and HA contribute to the sequestration of heavy metals. The as-synthesized hybrid adsorbent HA-HFO-D201 exhibited excellent performance on the removal of Cu(II), Cd(II), and Pb(II) in a pH range of 3-9, while no Fe leaching was observed. The presence of natural organic matter (20 mg C/L) has limited influences on the adsorption, and more than 85% of the target metals can be removed after treatment. HA-HFO-D201 showed preferable adsorption toward Cu(II) and Pb(II) (1 mg/L) from the background Ca2+ solution at much higher concentrations (100 mg/L), while the retention of Cd(II) (1 mg/L) decreased to some extent. Fixed-bed column experiments exhibited that the treatment capacities of HA-HFO-D201 are 90 bed volumes (BV) for Cd(II), 410 BV for Pb(II) and > 800 BV for Cu(II) of simulated contaminated water to meet theWHO drinking water standard. Meanwhile, depleted HA-HFO-D201 can be readily regenerated by a chelating agent Na(2)EDTA for repeated use. The hybrid adsorbent HA-HFO-D201 has excellent potential to remove heavy metals in water treatment systems. |
| Department | 环境化学与生态毒理学国家重点实验室 ; 环境化学与生态毒理学国家重点实验室 |
| Keyword | EFFICIENT REMOVAL ORGANIC-MATTER WASTE-WATER IRON-OXIDE NANOMATERIALS ADSORPTION NANOPARTICLES FABRICATION MECHANISMS |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47548 |
| Collection | 环境化学与生态毒理学国家重点实验室 |
| Corresponding Author | Yu, Sujuan |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China 2.Jianghan Univ, Inst Environm & Hlth, Hubei Key Lab Environm & Hlth Effects Persistent, Wuhan 430056, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Hao, Liteng,Li, Li,Yu, Sujuan,et al. Humic acid-coated hydrated ferric oxides-polymer nanocomposites for heavy metal removal in water[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,834(0):155427. |
| APA | Hao, Liteng,Li, Li,Yu, Sujuan,&Liu, Jingfu.(2022).Humic acid-coated hydrated ferric oxides-polymer nanocomposites for heavy metal removal in water.SCIENCE OF THE TOTAL ENVIRONMENT,834(0),155427. |
| MLA | Hao, Liteng,et al."Humic acid-coated hydrated ferric oxides-polymer nanocomposites for heavy metal removal in water".SCIENCE OF THE TOTAL ENVIRONMENT 834.0(2022):155427. |
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