Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination

Dongze Ma; Ye Tian; Tiefei He; Xiaobiao Zhu

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Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination

Updated：2026-01-06

- Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination
- Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination
- 中国化学工程学报（英文版） 2022年46卷第6期页码：223-230
- Affiliations：
  
  Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2022
- Accepted：
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Dongze Ma, Ye Tian, Tiefei He, 等. Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination[J]. 中国化学工程学报（英文版）, 2022,46(6):223-230.

Dongze Ma, Ye Tian, Tiefei He, Xiaobiao Zhu. Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination[J]. Chinese Journal of Chemical Engineering, 2022, 46(6): 223-230.
Dongze Ma, Ye Tian, Tiefei He, 等. Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination[J]. 中国化学工程学报（英文版）, 2022,46(6):223-230. DOI：

Dongze Ma, Ye Tian, Tiefei He, Xiaobiao Zhu. Preparation of novel magnetic nanoparticles as draw solutes in forward osmosis desalination[J]. Chinese Journal of Chemical Engineering, 2022, 46(6): 223-230. DOI：

摘要

Abstract

Novel magnetic nanoparticles (MNPs)

@SiO

and Fe

@SiO

@PEG-(COOH)

were prepared by loading different amounts of SiO

or/and PEG-(COOH)

onto Fe

nanoparticles

and their feasibility to be used as forward osmosis (FO) draw solutes was investigated. The characterization of the materials showed that

compared to normal Fe

nanoparticles

the modified MNPs exhibited enhanced dispersity and high osmotic pressure in aqueous solution. The FO experiment indicated that the synthesized draw solutes could obtain a water flux as high as 10 L·m

-2

·h

-1

with an aquaporin FO membrane. The optimal concentration of the added tetraethyl orthosilicate was 30% during the synthesis. The novel MNPs could be easily recovered from draw solutions by magnetic field

and the recovery rate of Fe

@SiO

and Fe

@SiO

@PEG-(COOH)

was 83.95% and 63.37%

respectively. Moreover

after 5 recycles of reuse

the water flux of Fe

@SiO

and Fe

@SiO

@PEG-(COOH)

as draw solutes still remained 64.36% and 85.26%

respectively. The experimental results demonstrated that the synthesized core–shell magnetic nanoparticles are promising draw solutes

and the Fe

@SiO

@PEG-

(COOH)

was more suitable to be used as draw solute in FO process.

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