Effect of magnetic field on surface tension and droplet size of metolachlor herbicide solution

WANG Yunchao; ZHAI Huabo; GONG Jinliang; ZHANG Yanfei

doi:10.7671/j.issn.1001-411X.202202020

Journal of South China Agricultural University > 2023 > 44(2): 324-332. > DOI: 10.7671/j.issn.1001-411X.202202020

WANG Yunchao, ZHAI Huabo, GONG Jinliang, et al. Effect of magnetic field on surface tension and droplet size of metolachlor herbicide solution[J]. Journal of South China Agricultural University, 2023, 44(2): 324-332. DOI: 10.7671/j.issn.1001-411X.202202020

Citation:

PDF (2102 KB)

Effect of magnetic field on surface tension and droplet size of metolachlor herbicide solution

1.
School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China
2.
Agricultural and Rural Service Center of Xihe Town, Zichuan District, Zibo 255161, China
3.
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China

More Information

Received Date: February 22, 2022
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
To study the effect of magnetization on surface tension of herbicide solution and particle size of herbicide spray droplet, and explore a new control method of particle size of herbicide spray droplet.

Method
The surface tension experiment of the magnetized herbicide solution and the particle size experiment of the magnetized spray droplet were designed to record the surface tension value of the herbicide solution and the particle size value of the spray droplet under the influence of two factors of different magnetic field intensity and magnetization duration, observe the change rule of the data, and fit the data, and give the functional relationship that conforms to the description of the data change.

Result
When the magnetic field intensity was 50−500 mT and magnetization duration was 5.0−25.0 min, both the surface tension of solution and the particle size of spray droplet decreased firstly and then rose with the increase of magnetic field intensity and magnetization duration. When the magnetic field intensity was 350 mT and magnetization duration was 15.0 min, the surface tension and particle size of spray droplet decreased the most. The surface tension value decreased to 54.0 mN/m with a drop rate of 14.96%, and the spray droplet size decreased to 108.75 μm with a drop rate of 11.20%. For surface tension data, the determination coefficient (R²) of Lorentz fitting function was 0.816 4, adjusted R² was 0.794 0, root mean square error (RMSE) was 1.105 9; And the R² of polynomial fitting function for spray droplet size data was 0.833 6, adjusted R² was 0.787 4, RMSE was 2.085 7. The fitting function was meaningful and the fitting precision was high.

Conclusion
It is not that the magnetization effect will be better with the increase of magnetic field intensity or magnetization duration, but that the optimal magnetization intensity and duration exist. The Lorentz model function given in this paper can be used as the function relation between the surface tension of herbicide solution and magnetization, and the cubic polynomial function can be used as the model for controlling the particle size of fog droplets under the magnetic field intensity of 350 mT.
- Magnetized treatment,
- Metolachlor,
- Surface tension,
- Droplet size,
- Data fitting

FullText(HTML)

References (24)

References

[1]	张东彦, 兰玉彬, 陈立平, 等. 中国农业航空施药技术研究进展与展望[J]. 农业机械学报, 2014, 45(10): 53-59. doi: 10.6041/j.issn.1000-1298.2014.10.009
[2]	李莲芝, 阎志平. 生物磁学在农业上的应用现状刍议[J]. 河南农业大学学报, 1991(3): 325-332.
[3]	IM C H, JUN S C, SEKIHARA K. Recent advances in biomagnetism and its applications[J]. Biomedical Engineering Letters, 2017, 7(3): 183-184. doi: 10.1007/s13534-017-0042-3
[4]	赵振保. 磁化水的理化特性及其煤层注水增注机制[J]. 辽宁工程技术大学学报(自然科学版), 2008, 27(2): 192-194. doi: 10.3969/j.issn.1008-0562.2008.02.009
[5]	ZHOU Q, QIN B T, WANG F, et al. Experimental investigation on the performance of a novel magnetized apparatus used to improve the dust wetting features of surfactant-magnetized water[J]. Powder Technology, 2019, 354: 149-157. doi: 10.1016/j.powtec.2019.05.081
[6]	丁振瑞, 赵亚军, 陈凤玲, 等. 磁化水的磁化机理研究[J]. 物理学报, 2011, 60(6): 432-439. doi: 10.7498/aps.60.064701
[7]	CAI R, YANG H W, HE J S, et al. The effects of magnetic fields on water molecular hydrogen bonds[J]. Journal of Molecular Structure, 2009, 938(1/2/3): 15-19.
[8]	LEE S H, JEON S I, KIM Y S, et al. Changes in the electrical conductivity, infrared absorption, and surface tension of partially-degassed and magnetically-treated water[J]. Journal of Molecular Liquids, 2013, 187: 230-237. doi: 10.1016/j.molliq.2013.07.017
[9]	MOOSA G M, KHULAEF J H, KHRAIBT A C, et al. Effect of magnetic water on physical properties of different kind of water, and studying its ability to dissolving kidney stone[J]. Journal of Natural Sciences Research, 2015, 5(18): 85-94.
[10]	HUO Z F, ZHAO Q, ZHANG Y H. Experimental study on effects of magnetization on surface tension of water[J]. Procedia Engineering, 2011, 26: 501-505. doi: 10.1016/j.proeng.2011.11.2198
[11]	LIU J S, CAO Y. Experimental study on the surface tension of magnetized water[J]. International Communications in Heat and Mass Transfer, 2021, 121: 105091. doi: 10.1016/j.icheatmasstransfer.2020.105091.
[12]	聂百胜, 丁翠, 李祥春, 等. 磁场对矿井水表面张力影响规律的实验研究[J]. 中国矿业大学学报, 2013, 42(1): 19-23. doi: 10.13247/j.cnki.jcumt.2013.01.005
[13]	TOLEDO E J L, RAMALHO T C, MAGRIOTIS Z M. Influence of magnetic field on physical-chemical properties of the liquid water: Insights from experimental and theoretical models[J]. Journal of Molecular Structure, 2008, 888(1/2/3): 409-415.
[14]	WANG Y F, ZHANG B, GONG Z B, et al. The effect of a static magnetic field on the hydrogen bonding in water using frictional experiments[J]. Journal of Molecular Structure, 2013, 1052: 102-104. doi: 10.1016/j.molstruc.2013.08.021
[15]	王玲, 兰玉彬, HOFFMANN W C, 等. 微型无人机低空变量喷药系统设计与雾滴沉积规律研究[J]. 农业机械学报, 2016, 47(1): 15-22. doi: 10.6041/j.issn.1000-1298.2016.01.003
[16]	文晟, 兰玉彬, 张建桃, 等. 农用无人机超低容量旋流喷嘴的雾化特性分析与试验[J]. 农业工程学报, 2016, 32(20): 85-93. doi: 10.11975/j.issn.1002-6819.2016.20.011
[17]	ESMAEILNEZHAD E, CHOI H J, SCHAFFIE M, et al. Characteristics and applications of magnetized water as a green technology[J]. Journal of Cleaner Production, 2017, 161: 908-921. doi: 10.1016/j.jclepro.2017.05.166
[18]	张伟伟, 张志峰, 薄华涛, 等. 磁化水性能的时效性研究[J]. 机电工程技术, 2020, 49(2): 71-73. doi: 10.3969/j.issn.1009-9492.2020.02.018
[19]	郑志雄, 薛秀云, 宋淑然, 等. 基于PDA系统单喷嘴雾滴参数的试验研究[J]. 农机化研究, 2021, 43(2): 110-117. doi: 10.3969/j.issn.1003-188X.2021.02.021
[20]	代秋芳, 洪添胜, 宋淑然, 等. 压力及孔径对管道喷雾空心圆锥雾喷头雾滴参数的影响[J]. 农业工程学报, 2016, 32(15): 97-103. doi: 10.11975/j.issn.1002-6819.2016.15.014
[21]	王双双, 何雄奎, 宋坚利, 等. 农用喷头雾化粒径测试方法比较及分布函数拟合[J]. 农业工程学报, 2014, 30(20): 34-42. doi: 10.3969/j.issn.1002-6819.2014.20.005
[22]	秦波涛, 周刚, 周群, 等. 煤矿综采工作面活性磁化水喷雾降尘技术体系与应用[J]. 煤炭学报, 2021, 46(12): 3891-3901.
[23]	袁会珠, 王国宾. 雾滴大小和覆盖密度与农药防治效果的关系[J]. 植物保护, 2015, 41(6): 9-16. doi: 10.3969/j.issn.0529-1542.2015.06.002
[24]	兰玉彬, 彭瑾, 金济. 农药喷雾粒径的研究现状与发展[J]. 华南农业大学学报, 2016, 37(6): 1-9. doi: 10.7671/j.issn.1001-411X.2016.06.001

Cited By

Get Citation

PDF

XML

Article views (98) PDF downloads (302)

Turn off MathJax

Article Contents

Abstract

References

Effect of magnetic field on surface tension and droplet size of metolachlor herbicide solution

Abstract

References

Catalog

Export File

Citation

Format

Content