Separate Reclamation of Oil and Surfactant from Oil-in-Water Emulsion with a CO2-Responsive Material
文献类型：期刊论文
| 作者 | Liu, Ya; Zhao, Yunfeng; Jiang, Ning ; Cheng, Wei; Lu, Dongwei; Zhang, Tao
|
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-06 |
| 期号 | 0页码:1-10 |
| 关键词 | NANOFIBROUS MEMBRANES ULTRAFAST SEPARATION EFFICIENT SEPARATION INORGANIC MEMBRANES ANIONIC SURFACTANTS DROPLETS ELECTROCOALESCENCE SUPEROLEOPHOBICITY COALESCENCE ADSORPTION |
| ISSN号 | 0013-936X |
| 英文摘要 | Oil-in-water (O/W) emulsion is one type of oily wastewater produced by many industries. The treatment of and resource recovery from O/W emulsions are very challenging. Unlike bulk or floating oil, which can be successfully abstracted from wastewater by hydrophobic/oleophilic materials, the abstraction of emulsified oil is not easy because of its highly hydrophilic surface composed of dense surfactants. Separate reclamation of miscible oil and surfactant through a green approach is even more difficult. Here, we report that a CO2-responsive material can abstract emulsified oil and demulsify the oil droplets. Moreover, it can release the abstracted oil and surfactant separately. This material exhibited a very high adsorption capacity for emulsified oil (14 g g(-1)). Upon switching the surface wettability of the material under CO2 or synthetic flue gas sparging, coalesced oil was reclaimed while the surfactant was retained inside the pores. The hydrophobic character of the material was retrieved when CO2 was purged with nitrogen sparging or air heating. Then, the surfactant was reclaimed by elution with diluted alkali/ethanol. Oil and surfactant were thus separately reclaimed from the O/W emulsion. High rates of oil removal, oil recovery, and surfactant recovery were maintained during repeated adsorption/desorption operations. This work provides a potentially sustainable and green way for O/W emulsion treatment and resource recovery. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47900]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 通讯作者 | Zhang, Tao |
| 作者单位 | 1.Sch Environm, Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Adv Funct Porous Mat, Tianjin 300384, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ya,Zhao, Yunfeng,Jiang, Ning,et al. Separate Reclamation of Oil and Surfactant from Oil-in-Water Emulsion with a CO2-Responsive Material[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022(0):1-10. |
| APA | Liu, Ya,Zhao, Yunfeng,Jiang, Ning,Cheng, Wei,Lu, Dongwei,&Zhang, Tao.(2022).Separate Reclamation of Oil and Surfactant from Oil-in-Water Emulsion with a CO2-Responsive Material.ENVIRONMENTAL SCIENCE & TECHNOLOGY(0),1-10. |
| MLA | Liu, Ya,et al."Separate Reclamation of Oil and Surfactant from Oil-in-Water Emulsion with a CO2-Responsive Material".ENVIRONMENTAL SCIENCE & TECHNOLOGY .0(2022):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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