[1]余哲帆,张可佳,毛如寅,等.微纳米气泡协同PMS降解2-MIB的机制及影响因素[J].中国给水排水,2025,41(15):31-38.
　YUZhe-fan,ZHANGKe-jia,MAORu-yin,et al.Mechanism and Influencing Factors of 2-MIB Degradation by Micro?nano Nubbles Combined with PMS[J].China Water & Wastewater,2025,41(15):31-38.
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微纳米气泡协同PMS降解2-MIB的机制及影响因素

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第15期 页码: 31-38 栏目: 出版日期: 2025-08-01
Title:
Mechanism and Influencing Factors of 2-MIB Degradation by Micro?nano Nubbles Combined with PMS
作者:
余哲帆1， 张可佳1,2， 毛如寅1， 金莎1， 胡婷婷1
（1.浙江大学 建筑工程学院，浙江 杭州 310058；2.浙江大学 长三角智慧绿洲创新中心，浙江 嘉兴 314100）
Author(s):
YU　Zhe-fan1， ZHANG　Ke-jia1，2， MAO　Ru-yin1， JIN　Sha1， HU　Ting-ting1
（1. College of Civil Engineering and Architecture， Zhejiang University， Hangzhou 310058， China； 2. Innovation Center of Yangtze River Delta， Zhejiang University， Jiaxing 314100， China）
关键词:
饮用水嗅味;  微纳米气泡;  过硫酸盐;  2-甲基异莰醇
Keywords:
drinking water odor;  micro-nano bubble;  persulfate;  2-methylisoborneol
摘要:
2-甲基异莰醇（2-MIB）是饮用水中的代表性嗅味物质。研究了微纳米气泡协同过硫酸盐体系（MNBs-PMS）降解2-MIB的动力学和降解机制，考察了PMS投加量、气源、进气量和pH等工艺参数对2-MIB降解效能的影响。结果表明，MNBs破裂时产生的极端高温高压能够更好地活化PMS。在相同条件下，该体系的去除效果是单独PMS和MNBs的3~5倍，反应速率可达两种单独体系的4~6倍，协同效果显著。体系的去除效果与PMS投加量和进气量呈明显正相关，投加量从0.5 mmol/L增加到5 mmol/L时，其反应速率常数由0.005 0 min-1增加至0.011 2 min-1；进气量为50 mL/min的去除效果相比于进气量为10 mL/min的提升了40%。在pH为3~9的范围内，pH为9时去除效能最佳。以氧气作为气源可以提高水中溶解氧水平，天然无机阴离子和腐殖质的存在也会影响降解，效果与其种类和浓度有关。体系降解2-MIB 的主要活性物质有·OH和·SO4-等。此外，还探究了MNBs-PMS体系降解2-MIB的中间产物，并提出了可能的降解路径。
Abstract:
2-methylisoborneol (2-MIB) is a representative odorant in drinking water. The study investigated the kinetics and degradation mechanisms of 2-MIB using a micro-nano bubble combined with a peroxymonosulfate system (MNBs-PMS). The effects of various parameters, such as PMS dosage, gas source, gas flow rate, and pH, on the degradation of 2-MIB were examined. The results showed that the extreme high temperature and pressure generated during MNBs rupture could better activate PMS. Under the same conditions, the removal efficiency of the combined system was 3-5 times greater than that of PMS or MNBs alone, with reaction rates achieving 4-6 times, highlighting a significant synergistic effect. The removal efficiency positively correlated with PMS dosage and gas flow rate. When the PMS dosage increased from 0.5 mmol/L to 5 mmol/L, the reaction rate constant increased from 0.005 0 min-1 to 0.011 2 min-1. The experimental group with a gas flow rate of 50 mL/min showed a 40% improvement in removal efficiency compared to the group with a flow rate of 10 mL/min, with optimal efficiency achieved at pH 9 within a range of 3 to 9. Using oxygen as the gas source inproved dissolved oxygen levels in the water. The presence of natural inorganic anions and humic substances influenced degradation, with the effects varying based on their type and concentration. Quenching experiments identified hydroxyl radicals (·OH) and sulfate radicals (·SO4-) as the primary active species responsible for the degradation of 2-MIB. Additionally, the study explored the intermediate products formed during the degradation of 2-MIB in the MNBs-PMS system and proposed possible degradation pathways.

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[1]王庆斌,刘贵彩,朱友兵,等.微纳米气泡强化海水淡化反渗透浓水膜蒸馏脱盐效能[J].中国给水排水,2026,42(1):28.
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更新日期/Last Update: 2025-08-01