声化学微反应器降解亚甲基蓝废水试验研究

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摘要为提高Fe²⁺活化过硫酸钠（SPS）降解亚甲基蓝（MB）的效率，设计了一种声化学微反应器。首先研究了静置系统、磁力搅拌系统、毛细管微反应器系统和声化学微反应器系统中MB和硫酸亚铁（FeSO₄）混合液pH值、FeSO₄浓度、SPS浓度对MB降解率的影响。其次，在声化学微反应器系统和毛细管微反应器系统中研究了流道结构和流速对MB降解率的影响。结果表明：在不同的MB和FeSO₄混合液pH值、FeSO₄浓度下，声化学微反应器系统中MB降解率均高于其他反应系统。随着SPS浓度的增加，MB降解率呈上升趋势，但在声化学微反应器系统中增加SPS浓度会影响MB降解。相比于直线形、三角波形和半圆波形流道结构，MB在矩形波形流道结构中降解效率更高。溶液在管道内停留时间相同时，增加流速更有利于氧化降解反应的进行。实验表明：当MB浓度为0.2 mmol·L^-1，MB和FeSO₄混合液pH值为3、FeSO₄浓度为1.4 mmol·L^-1、SPS浓度为1.8 mmol·L^-1，流道结构为矩形波形，流速为13.16 cm·s^-1时，声化学微反应系统中MB降解率达到85.45%。

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	程洋
	王栋
	刘汇洋
	刘佩佩
	石赛
	夏晓露
	俞建峰

关键词：声化学微反应器降解亚铁离子过硫酸钠亚甲基蓝

Abstract： To improve the degradation efficiency of methylene blue (MB) by Fe²⁺ activated sodium persulfate (SPS), a sonochemical microreactor was designed. Firstly, the effects of pH of MB and FeSO₄ mixture, FeSO₄ concentration and SPS concentration on degradation rate of MB in static system, magnetic stirring system, capillary microreactor system and sonochemical microreactor system were studied. Secondly, the effects of channel structure and solution flow rate on the degradation rate of MB were studied in the capillary microreactor system and sonochemical microreactor system. The results show that the degradation rate of MB in the sonochemical microreactor system is higher than that in other systems under different pH of MB and FeSO₄ mixture and FeSO₄ concentration. The degradation rate of MB increased with the increase of SPS concentration, but the increase of SPS concentration would affect the degradation of MB in the sonochemical microreactor system. Compared with linear, triangular and semicircular channel structures, MB degrades more efficiently in rectangular channel structures. When the residence time of the solution in the pipeline is the same, increasing the solution flow rate of the injection pump is more beneficial to the oxidative degradation reaction. The experimental results show that when the concentration of MB was 0.2 mmol·L^-1, the pH of MB and FeSO₄ mixture was 3, the concentration of FeSO₄ was 1.4 mmol·L^-1, the concentration of SPS was 1.8 mmol·L^-1, the channel structure was rectangular waveform, and the solution flow rate was 13.16 cm·s^-1, the degradation rate of MB in sonochemical microreaction system reached 85.45%.

Keywords： sonochemical microreactor degradation ferrous ion sodium persulfate methylene blue

Received 2022-01-28;

Fund:江苏省研究生科研与实践创新计划项目（SJCX20_0758）。

Corresponding Authors: 俞建峰,教授,E-mail:robotmcu@126.com。 Email: robotmcu@126.com

About author: 程洋(1997-),男,博士研究生,现从事微反应器方面的研究。

引用本文:

程洋, 王栋, 刘汇洋, 刘佩佩, 石赛, 夏晓露, 俞建峰.声化学微反应器降解亚甲基蓝废水试验研究[J]. 化学工业与工程, 2022,39(6): 93-100

CHENG Yang, WANG Dong, LIU Huiyang, LIU Peipei, SHI Sai, XIA Xiaolu, YU Jianfeng.Experimental study on degradation of methylene blue wastewater by sonochemical microreactor[J]. Chemcial Industry and Engineering, 2022,39(6): 93-100

[1] BENKHAYA S, M'RABET S, EL HARFI A. Classifications, properties, recent synthesis and applications of azo dyes[J]. Heliyon, 2020, doi:10.1016/j.heliyon.2020.e03271
[2] ALSANTALI R I, RAJA Q A, ALZAHRANI A Y A, et al. Miscellaneous azo dyes:A comprehensive review on recent advancements in biological and industrial applications[J]. Dyes and Pigments, 2022, doi:10.1016/j.dyepig.2021.110050
[3] CAI M, SU J, LIAN G, et al. Sono-advanced Fenton decolorization of azo dye Orange G:Analysis of synergistic effect and mechanisms[J]. Ultrasonics Sonochemistry, 2016, 31:193-200
[4] KODAVATIGANTI S, BHAT A P, GOGATE P R. Intensified degradation of Acid Violet 7 dye using ultrasound combined with hydrogen peroxide, Fenton, and persulfate[J]. Separation and Purification Technology, 2021, doi:10.1016/j.seppur.2021.119673
[5] LIN X, MA Y, WAN J, et al. Efficient degradation of Orange G with persulfate activated by recyclable FeMoO₄[J]. Chemosphere, 2019, 214:642-650
[6] DAILIN D J, NORDIN N Z, TAN L, et al. State of the art bioremediation of textile dye in wastewater:A Review[J]. Bioscience Research, 2022, 19(2):914-924
[7] NIU C, WANG Y, ZHANG X, et al. Decolorization of an azo dye Orange G in microbial fuel cells using Fe(Ⅱ)-EDTA catalyzed persulfate[J]. Bioresource Technology, 2012, 126:101-106
[8] 蔺艺莹, 宋宝东. Fe(Ⅱ)/亚硫酸盐体系活化溶解氧降解苯胺[J]. 化学工业与工程, 2020, 37(4):1-6 LIN Yiying, SONG Baodong. Degradation of aniline by dissolved oxygen catalyzed by Fe (Ⅱ)/sulfite system[J]. Chemical Industry and Engineering, 2020, 37(4):1-6(in Chinese)
[9] LIU N, DING F, WENG C, et al. Effective degradation of primary color direct azo dyes using Fe⁰ aggregates-activated persulfate process[J]. Journal of Environmental Management, 2018, 206:565-576
[10] ZHU J, LIN Y, ZHANG T, et al. Modelling of iohexol degradation in a Fe(Ⅱ)-activated persulfate system[J]. Chemical Engineering Journal, 2019, 367:86-93
[11] KHAN J A, HE X, SHAH N, et al. Kinetic and mechanism investigation on the photochemical degradation of atrazine with activated H₂O₂, S₂O₈^2- and HSO₅^-[J]. Chemical Engineering Journal, 2014, 252:393-403
[12] ZHANG Y, ZHANG J, XIAO Y, et al. Kinetic and mechanistic investigation of azathioprine degradation in water by UV, UV/H₂O₂ and UV/persulfate[J]. Chemical Engineering Journal, 2016, 302:526-534
[13] TIAN K, HU L, LI L, et al. Recent advances in persulfate-based advanced oxidation processes for organic wastewater treatment[J]. Chinese Chemical Letters, 2022, 33(10):4461-4477
[14] YAN Z, GU Y, WANG X, et al. Degradation of aniline by ferrous ions activated persulfate:Impacts, mechanisms, and by-products[J]. Chemosphere, 2021, doi:10.1016/j.chemosphere.2020.129237
[15] 董正亚, 陈光文, 赵帅南, 等. 声化学微反应器:超声和微反应器协同强化[J]. 化工学报, 2018, 69(1):102-115 DONG Zhengya, CHEN Guangwen, ZHAO Shuainan, et al. Sonochemical microreactor-Synergistic intensification of ultrasound and microreactor[J]. CIESC Journal, 2018, 69(1):102-115(in Chinese)
[16] BAYAREH M, ASHANI M N, USEFIAN A. Active and passive micromixers:A comprehensive review[J]. Chemical Engineering and Processing-Process Intensification, 2020, 10.1016/j.cep.2019.107771
[17] DONG Z, YAO C, ZHANG X, et al. A high-power ultrasonic microreactor and its application in gas-liquid mass transfer intensification[J]. Lab on a Chip, 2015, 15(4):1145-1152
[18] ZHAO S, YAO C, DONG Z, et al. Role of ultrasonic oscillation in chemical processes in microreactors:A mesoscale issue[J]. Particuology, 2020, 48:88-99
[19] THANGAVADIVEL K, KONAGAYA M, OKITSU K, et al. Ultrasound-assisted degradation of methyl orange in a micro reactor[J]. Journal of Environmental Chemical Engineering, 2014, 2(3):1841-1845
[20] RAYAROTH M P, ARAVINDAKUMAR C T, SHAH N S, et al. Advanced oxidation processes (AOPs) based wastewater treatment-unexpected nitration side reactions-a serious environmental issue:A review[J]. Chemical Engineering Journal, 2022, doi:10.1016/j.cej.2021.133002
[21] XU X, ZHAO Z, LI X, et al. Chemical oxidative degradation of methyl tert-butyl ether in aqueous solution by Fenton's reagent[J]. Chemosphere, 2004, 55(1):73-79
[22] XU X, LI X. Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion[J]. Separation and Purification Technology, 2010, 72(1):105-111
[23] HAN D, WAN J, MA Y, et al. New insights into the role of organic chelating agents in Fe(Ⅱ) activated persulfate processes[J]. Chemical Engineering Journal, 2015, 269:425-433
[24] SHANG W, DONG Z, LI M, et al. Degradation of diatrizoate in water by Fe(Ⅱ)-activated persulfate oxidation[J]. Chemical Engineering Journal, 2019, 361:1333-1344
[25] 陈昱冉. 超声驻波场中疏水颗粒稳态声团聚机理[D]. 江苏徐州:中国矿业大学, 2020 CHEN Yuran. The mechanism of the stable acoustic aggregation of hydrophobic particles in ultrasonics standing waves field[D]. Jiangsu Xuzhou:China University of Mining and Technology, 2020 (in Chinese)
[26] 王凯, 齐广宇, 蒋章妹, 等. 亚甲基蓝溶液中分子二聚现象的压致增强研究[J]. 高等学校化学学报, 2014, 35(11):2431-2434 WANG Kai, QI Guangyu, JIANG Zhangmei, et al. High pressure-enhanced dimeric aggregation in methylene blue solution†[J]. Chemical Journal of Chinese Universities, 2014, 35(11):2431-2434(in Chinese)
[27] 刘赵淼, 赵晟, 王文凯, 等. 几何构型对平面混沌式微混合器混合性能的影响[J]. 分析化学, 2019, 47(9):1321-1331 LIU Zhaomiao, ZHAO Sheng, WANG Wenkai, et al. Influence of geometric configuration on mixing performance of planar chaotic micro-mixer[J]. Chinese Journal of Analytical Chemistry, 2019, 47(9):1321-1331(in Chinese)
[28] 梁洁. 基于波形微混合器的黄芩素电化学检测技术研究[D]. 江苏无锡:江南大学, 2021 LIANG Jie. Research on electrochemical detection technology based on wavy micromixers for the determination of baicalein[D]. Jiangsu Wuxi:Jiangnan University, 2021 (in Chinese)
[29] 谢耀聪. 基于微流控芯片和电化学技术的茶多酚检测方法研究[D]. 江苏无锡:江南大学, 2020 XIE Yaocong. Research on the detection method of tea polyphenols based on microfluidic chip and electrochemical technology[D]. Jiangsu Wuxi:Jiangnan University, 2020 (in Chinese)