Effective degradation of methylisothiazolone biocide using ozone: Kinetics, mechanisms, and decreases in toxicity

Li, Ang; Wu, Qian-Yuan; Tian, Gui-Peng; Hu, Hong-Ying

doi:10.1016/j.jenvman.2016.08.057

Cited by 31 publications

(15 citation statements)

References 35 publications

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“…2-Methyl-1,2-thiazol-3(2H)-one, also named methylisothiazolinone (MIT), and 1,2-Benzisothiazol-3(2H)-one, or benzisothiazolinone (BIT), are very common biocides employed in personal care products, detergents (Li et al, 2016a;Garcia-Hidalgo et al, 2016), roof and outdoor paints, paper materials, and in other important industrial applications (Jungnickel et al, 2008;Wieck et al, 2016, Wang et al, 2017Li et al, 2016b), i.e. in reverse osmosis processes for water reclamation and desalination (Li et al, 2016a) and, in high concentrations, in cooling towers, paper mills, and refinery industry (Amat et al, 2015). As a result, significant concentrations of MIT and BIT have been reported in wastewater treatment plants' (WWTPs') influent, effluent, and in surface water (Wieck et al, 2016;Speksnijder et al, 2010;Liu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Ultrafast photodegradation of isoxazole and isothiazolinones by UV254 and UV254/H2O2 photolysis in a microcapillary reactor

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Ultrafast photodegradation of isoxazole and isothiazolinones by UV254 and UV254/H2O2 photolysis in a microcapillary reactor

et al. 2020

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“…MIT is applied in RO applications as a non-oxidizing biocide in cleaning events and membrane storage either alone or in combination with 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT) in a CMIT/MIT ratio of 3:1 (Collier et al 1990;Majamaa et al 2011;Kucera 2015;Li et al 2016). According to Kucera (2015), isothiazolinones are a viable choice to control biofouling in polyamide membrane systems.…”

Section: Methylisothiazolinone (Mit)mentioning

confidence: 99%

“…The main limitations of MIT biocide treatment are its high toxicity and the long exposure time and high doses needed for controlling biofouling (Li et al 2016;Kucera 2019;Silva et al 2020). Silva et al (2020) reported many hazards associated with the industrial use of MIT as a biocide such as high aquatic toxicity and adverse health effects (e.g.…”

Section: Advantages and Limitationsmentioning

confidence: 99%

“…eye and skin irritation). Li et al (2016) reported that the concentrate containing MIT is not easily and safely disposable, because MIT needs to be removed from the concentrate as a result of its high toxicity. The researchers also reported that UV radiation and ozonation can both degrade MIT, providing a possible post-treatment approach for both the concentrate and permeate.…”

Section: Advantages and Limitationsmentioning

confidence: 99%

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The application of non-oxidizing biocides to prevent biofouling in reverse osmosis polyamide membrane systems: a review

Da-Silva-Correa

Smith

Thibodeau

et al. 2022

Journal of Water Supply: Research and Technology-Aqua

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Biofouling of polyamide membranes is one of the main barriers faced by reverse osmosis (RO) technologies to supply fresh water. Currently, biofouling is addressed by feed water pretreatment using chlorine, followed by membrane cleaning. Chlorine damages polyamide membranes and also generates harmful disinfection byproducts. Thus, safer strategies are needed to prevent biofouling in polyamide membrane systems. This review investigates the applicability of the following non-oxidizing biocides in preventing and controlling biofouling in RO systems, including their antimicrobial efficiency, hazard levels, membrane compatibility, and applicability to drinking water treatment: (1) 2,2-dibromo-3-nitropropionamide (DBNPA); (2) 2-methyl-4-isothiazolin-3-one (MIT); (3) sodium bisulfite (SBS), (4) phenoxyethanol (PE), (5) sodium benzoate (SB). According to this review, MIT and DBNPA present most of the features attributed to an ideal anti-biofouling chemical but also are the most hazardous biocides. Due to safety and efficacy, none of the five chemicals were determined to be the final solution to address membrane biofouling. However, alternative RO biocide research is in early development and requires further investigation via biofouling prevention studies. Therefore, future research efforts on the investigation of economic, eco-friendly, and safe antifouling agents to prevent and treat biofouling in RO systems are paramount to promote sustainable water supply in water-stressed countries.

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“…Moreover, a CMIT/MIT mixture can cause allergic reactions, and the halogenated groups induce CMIT sensitization [1]. The median lethal concentration (LC50) of MIT for Daphnia magna is 18.2 µmol•L −1 , and its primary ozonation product remains toxic [10]. Biocides that are discharged into natural water systems without appropriate treatment may cause potential environmental and toxicological problems [11].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Isothiazolone Biocides in Textile Reverse Osmosis Concentrate by Powdered Activated Carbon

Chen

Wang

et al. 2018

Water

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Isothiazolones have been widely applied as non-oxidizing biocides to prevent biofouling of reverse osmosis (RO) membranes. However, few studies have investigated suitable RO concentrate treatments to remove these biocides. This study evaluated the adsorption behavior of four isothiazolone biocides, 2-methyl-4-isothiazolin-3-one (MIT), 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT), 1,2-benzisothiazol-3(2H)-one (BIT), and 2-n-octyl-4-isothiazolin-3-one (OIT), by powdered activated carbon (PAC). Isothiazolones adsorption was found to obey pseudo second-order kinetics. Langmuir adsorption isotherms were more suitable to simulation of the adsorption effects than Freundlich isotherms. The adsorption amount followed the order OIT > BIT > CMIT > MIT, in accordance with the isothiazolones octanol/water partition coefficients (K ow), indicating that hydrophobicity is the main factor for influencing adsorption amounts. Following normalization with K ow , the amounts of isothiazolones adsorbed at equilibrium and normalized aqueous concentrations showed a linear relationship in a log-linear form. 1,2-benzisothiazol-3(2H)-one is anionic at high pH, and difficult to adsorb, while neutral BIT is more likely to be adsorbed. Textile reverse osmosis concentrate had an adverse effect on MIT, CMIT and BIT adsorption, but little effect on adsorption of OIT, which has a high log K ow value. There was competition between organics and isothiazolones for PAC adsorption sites, which influenced the adsorption efficiency.

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Effective degradation of methylisothiazolone biocide using ozone: Kinetics, mechanisms, and decreases in toxicity

Cited by 31 publications

References 35 publications

Ultrafast photodegradation of isoxazole and isothiazolinones by UV254 and UV254/H2O2 photolysis in a microcapillary reactor

Ultrafast photodegradation of isoxazole and isothiazolinones by UV254 and UV254/H2O2 photolysis in a microcapillary reactor

The application of non-oxidizing biocides to prevent biofouling in reverse osmosis polyamide membrane systems: a review

Adsorption of Isothiazolone Biocides in Textile Reverse Osmosis Concentrate by Powdered Activated Carbon

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