Adsorption properties of modified silica gel on Fe<sup>3+</sup> in wind turbine gear oil

底广辉; 李师圆; 黄泽宇; 夏启斌

doi:10.19666/j.rlfd.202411234

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Adsorption properties of modified silica gel on Fe³⁺ in wind turbine gear oil

Thermal Power Generation Vol. 54, Issue 9, Pages: 79-85(2025)

更新时间：2026-08-11

- Adsorption properties of modified silica gel on Fe³⁺ in wind turbine gear oil
- 作者机构：
  
  1. 华北电力科学研究院有限责任公司
  2. 华南理工大学化学与化工学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202411234
  CLC： TM315
- Published：2025
- 稿件说明：
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[1]底广辉,李师圆,黄泽宇,等.改性硅胶对风电齿轮油中Fe~(3+)的吸附性能[J],2025,54(09):79-85.
[1]底广辉,李师圆,黄泽宇,等.改性硅胶对风电齿轮油中Fe~(3+)的吸附性能[J],2025,54(09):79-85. DOI： 10.19666/j.rlfd.202411234.

DOI：10.19666/j.rlfd.202411234.

摘要

对风电机组齿轮油运行油样品和新油样品进行对比测试，发现Fe

含量为劣化最快的指标。通过浸渍改性将聚乙烯亚胺(PEI)负载到硅胶材料(SG)上制备SG-PEI吸附剂并进行表征，研究了Fe

在SG-PEI上的吸附等温线和动力学。结果表明：Fe

在SG-PEI上的吸附等温线符合Langmuir吸附模型；SG-PEI对Fe

饱和吸附量约为28.71 mg/g，相比SG(20.63 mg/g)提升39.2%;SG-PEI对Fe

的吸附过程符合拟二级动力学模型，吸附过程为自发的放热反应；在吸附温度60℃，吸附时间120 min，油剂比100:3的条件下，SGPEI对风电机组运行齿轮油中Fe

脱除率达96.23%，是801吸附剂(3.27%)的29.43倍，也是Al_2O

(0.52%)的185.06倍，其对齿轮油中Fe

具有高吸附容量和选择性，具有良好的应用前景。

Abstract

A comparative test was conducted on operating oil samples from wind turbine gear oil and a fresh oil sample

revealing that the Fe

content was the most rapidly deteriorating indicator. The SG-PEI adsorbent was prepared by loading polyethyleneimine(PEI) onto a silica gel material(SG) through impregnation modification

and its characteristics were evaluated. The adsorption isotherms and kinetics of Fe

on SG-PEI were thoroughly investigated. The results indicated that

the adsorption isotherm of

on SG-PEI conforms to Langmuir model.The saturated adsorption capacity of SG-PEI for Fe

was 28.71 mg/g

representing a 39.2% improvement compared to SG(20.63 mg/g). The adsorption process of Fe

on SG-PEI adhered to the pseudo-second-order kinetic model

with adsorption process occurring as a spontaneous exothermic reaction. Under optimal conditions of an adsorption temperature of 60 ℃

an adsorption time of 120 min

and an oil-adsorbent ratio of 100:3

the removal rate of Fe

from wind turbine gear oil by SG-PEI reached 96.23%

which is 29.43 times higher than that of the 801 adsorbent(3.27%) and 185.06 times higher than that of Al_2O

(0.52%). The SG-PEI has a good prospect for applications due to its high adsorption capacity and selectivity for Fe

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Adsorption properties of modified silica gel on Fe3+ in wind turbine gear oil

DOI：10.19666/j.rlfd.202411234

摘要

Abstract

关键词

Keywords

references

Adsorption properties of modified silica gel on Fe³⁺ in wind turbine gear oil