温敏磁性纳米颗粒正渗透汲取剂的制备及性能研究

doi:10.11894/iwt.2020-0153

工业水处理 ›› 2021, Vol. 41 ›› Issue (1): 107-112. doi: 10.11894/iwt.2020-0153

温敏磁性纳米颗粒正渗透汲取剂的制备及性能研究

谢宝龙¹(),陈希²,彭新红¹,王旭楠¹,马晓蕾¹,王勋亮¹,曹军瑞^1,²

1. 自然资源部天津海水淡化与综合利用研究所, 天津 300192
2. 天津市海跃水处理高科技有限公司, 天津 300192

收稿日期:2020-10-16 出版日期:2021-01-20 发布日期:2021-01-27
作者简介:谢宝龙(1988-), 博士, 工程师。电话:13920263725, E-mail:xiebaolong@tju.edu.cn

Preparation and properties of thermosensitive magnetic nanoparticle forward osmotic draw solution

Baolong Xie¹(),Xi Chen²,Xinhong Peng¹,Xu'nan Wang¹,Xiaolei Ma¹,Xunliang Wang¹,Junrui Cao^1,²

1. The Institute of Seawater Desalination and Multipurpose Utilization, MNR(Tianjin), Tianjin 300192, China
2. Tianjin Hai Yue Water Treatment Hi Tech Co., Ltd., Tianjin 300192, China

Received:2020-10-16 Online:2021-01-20 Published:2021-01-27

摘要/Abstract

摘要：

开发了3种不同表面负电荷量的温敏磁性纳米颗粒NP1、NP2、NP3，并用作正渗透汲取剂。正渗透实验中三者均表现出良好的汲取性能，特别是NP3，平均产生8.77 L/（m²·h）的水通量。通过高温条件下的磁回收，三者回收率均达到90%以上。此外，重复使用10次后，3种汲取剂性能未出现明显衰减。细胞毒性实验表明3种汲取剂均无细胞毒性，具有良好的生物相容性。

关键词: 正渗透, 汲取剂, 温度响应, 磁性纳米颗粒, 水通量

Abstract:

Three thermo-responsive magnetic nanoparticles(TRMNPs) with different negative charges on surface as draw solution in forward osmosis process:NP1, NP2 and NP3 were developed. In FO experiments, TRMNPs showed good absorption performance, especially NP3, and the average producing water flux of which reached at 8.77 L/(m²·h). By magnetic recovery under high temperature, the recovery rate of TRMNPs were all up to 90%. Moreover, after 10 recycling FO processes, there was no obvious attenuation properties of TRMNPs. Finally, cytotoxic experiments showed TRMNPs had good bio-compatible and environment-friendly characteristics. To sum up, TRMNPs were good forward osmotic draw solution, among which NP3 was the best.

Key words: forward osmosis, draw solution, thermo-responsive, magnetic nanoparticles, water flux

中图分类号:

X703.1

谢宝龙,陈希,彭新红,王旭楠,马晓蕾,王勋亮,曹军瑞. 温敏磁性纳米颗粒正渗透汲取剂的制备及性能研究[J]. 工业水处理, 2021, 41(1): 107-112.

Baolong Xie,Xi Chen,Xinhong Peng,Xu'nan Wang,Xiaolei Ma,Xunliang Wang,Junrui Cao. Preparation and properties of thermosensitive magnetic nanoparticle forward osmotic draw solution[J]. Industrial Water Treatment, 2021, 41(1): 107-112.

https://www.iwt.cn/CN/Y2021/V41/I1/107

图/表 8

图1 正渗透实验设备

表1 不同AAc质量合成得到的TRMNPs的粒径、PDI、Zeta电势

颗粒AAc/g	粒径/nm	PDI	Zeta	电势/mV
NP1	1.0	17.9±0.3	0.035	-14.2±1.7
NP2	1.5	19.3±0.5	0.075	-21.9±0.9
NP3	2.0	20.5±0.2	0.034	-43.5±2.6

图2 TRMNPs的磁滞回曲线

表2 TRMNPs在不同温度范围内的质量变化

TRMNPs	ΔW₁/%	ΔW₂/%
NP1	9.09	36.36
NP2	11.76	44.12
NP3	14.63	48.78

图3 TRMNPs的粒径随温度的变化

图4 不同TRMNPs的J_w随汲取液浓度和时间的变化

图5 不同TRMNPs的J_w随汲取液浓度和时间的变化

图6 不同TRMNPs的J_s随汲取液浓度的变化

参考文献 16

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