“蜡烛”型过硫酸盐缓释材料释放行为与机制

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Abstract Paraffin wax (PW) was selected as the matrix material, and various "candle" shaped persulfate(PS) sustained-release materials (PS@PW) were prepared by melt injection molding condensation method. The release performance of PS was evaluated by static release batch experiment. The results showed that the mass ratio of PS to PW greatly influenced the release performance of PS. After 20days of reaction, the PS release rate was lower than 30% when PS: PW≤1:1, while the PS release rate was higher than 80% when PS:PS>1:1. Under the same ratio of PS to PW, the larger the diameter of PS@PW, the longer the PS release time, but the maximum PS release rate decreased. When PS: PW= 2:1, h=70mm, D=22mm, the longest release time of PS@PW was 36d, and the PS release rate was 92%. The Bhasker and Rigter-Peppas models were used to fit the PS release from PS@PW. Combined with SEM characterization, it was determined that the release mechanism of PS from PS@PW was divided into two stages: surface PS dissolution and internal PS diffusion. It provides a theoretical basis for the application of in-situ oxidation in organically polluted sites.

Key words： persulfate sustained-release material release mechanism groundwater

Received: 27 June 2022

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X523

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	ZHU Xue-qiang
	HUA Gang
	ZHOU Lai
	LI Dan-qiong

Cite this article:

ZHU Xue-qiang,HUA Gang,ZHOU Lai等. Release behavior and mechanism of candle-shaped persulfate sustained-release material[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(2): 601-609.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I2/601

[1]	Wang T, Xu K, Yan K, et al. Comparative study of the performance of controlled release materials containing mesoporous MnOx in catalytic persulfate activation for the remediation of tetracycline contaminated groundwater [J]. Science and the Total Environment, 2022,846: 157217.
[2]	Chen W, Luo Y, Ran G, et al. Microwave-induced persulfate-hydrogen peroxide binary oxidant process for the treatment of dinitrodiazophenol industrial wastewater [J]. Chemical Engineering Journal, 2020,382:122803.
[3]	Kim U, Parker J C, Borden R C. Stochastic cost-optimization and risk assessment of in situ chemical oxidation for dense non-aqueous phase liquid (DNAPL) source remediation [J]. Stochastic Environmental Research and Risk Assessment, 2019,33:73-89.
[4]	Maghrebi m, Jankovic I, Allen-King R M, et al. Impacts of transport mechanisms and plume history on tailing of sorbing plumes in heterogeneous porous formations [J]. Advances in Water Resources, 2014,73:123-133.
[5]	Brusseau M L, Nelson N T, Zhang Z, et al. Source-zone characterization of a chlorinated-solvent contaminated superfund site in Tucson, AZ [J]. Journal of Contaminant Hydrology, 2007,90(1/2): 21-40.
[6]	O'connor D, Hou D, Ok Y S, et al. Sustainable in situ remediation of recalcitrant organic pollutants in groundwater with controlled release materials: A review [J]. Journal of Controlled Release, 2018,283: 200-213.
[7]	Yuan B, Li F, Chen Y, et al. Laboratory-scale column study for remediation of TCE-contaminated aquifers using three-section controlled-release potassium permanganate barriers [J]. Journal of Environmental Sciences, 2013,25(5):971-977.
[8]	Christenson M, Kambhu A, Reece J, et al. A five-year performance review of field-scale, slow-release permanganate candles with recommendations for second-generation improvements [J]. Chemosphere, 2016,150:239-247.
[9]	Hung C, Huang C, Chen C, et al. Hydrodynamic cavitation activation of persulfate for the degradation of polycyclic aromatic hydrocarbons in marine sediments [J]. Environmental Pollution, 2021, 286:117245.
[10]	García-Cervilla R, Santos A, Romero A, et al. Remediation of soil contaminated by lindane wastes using alkaline activated persulfate: Kinetic model [J]. Chemical Engineering Journal, 2020,393:124646.
[11]	Kambhu A, Comfort S, Chokejaroenrat C, et al. Developing slow-release persulfate candles to treat BTEX contaminated groundwater [J]. Chemosphere, 2012,89(6):656-664.
[12]	Dai Z, Li D, Ao Z, et al. Theoretical exploration of VOCs removal mechanism by carbon nanotubes through persulfate-based advanced oxidation processes: Adsorption and catalytic oxidation [J]. Journal of Hazardous Materials, 2021,405:124684.
[13]	Zhang Y, Zhao H, Wen J, et al. Insights into the nonradical degradation mechanisms of antibiotics in persulfate activation by tourmaline [J]. Separation and Purification Technology, 2021,270: 118772.
[14]	Wang T, Xu K, Yan K, et al. Comparative study of the performance of controlled release materials containing mesoporous MnOx in catalytic persulfate activation for the remediation of tetracycline contaminated groundwater [J]. Science of the Total Environment, 2022,846:157217.
[15]	王文丽.以石蜡为载体缓释过硫酸盐在水溶液和砂孔介质的研究 [D]. 长沙:湖南大学, 2019. Wang W L. Sustained release of persulfate in aqueous solution and sand porous media using paraffin as carrier [D]. Changsha: Hunan University, 2019.
[16]	杨昱,徐祥健,韩旭,等.双层包覆型缓释材料中过硫酸盐释放性能研究 [J]. 环境科学研究, 2020,33(3):652-658. Yang Y, Xu X J, Han X, et al. Release characteristics of persulfate from double layer slow-release materials [J]. Research of Environmental Sciences, 2020,33(3):652-658.
[17]	万朔阳.注入型过硫酸盐凝胶缓释剂的制备及降解2,4-DNT性能研究 [D]. 成都:成都理工大学, 2020. Wan S Y. Preparation of slow release persulfate gel for remediation of 2,4-DNT [D]. Chengdu: Chengdu University of Technology, 2020.
[18]	Pham P T, Federico-Perez R A, Fine K L, et al. Sustained release of persulfate from inert inorganic materials for groundwater remediation [J]. Chemosphere, 2020,259:127508.
[19]	Ranjha N M, Khan H, Naseem S. Encapsulation and characterization of controlled release flurbiprofen loaded microspheres using beeswax as an encapsulating agent [J]. Journal of Materials Science: Materials in Medicine, 2010,21:1621-1630.
[20]	Assimi T E, Lakbita O, Meziane A E, et al. Sustainable coating material based on chitosan-clay composite and Paraffin wax for Slow-Release DAP Fertilizer [J]. International Journal of Biological Macromolecules, 2020,161:492-502.
[21]	蒋慧灵,臧娜,钱新明,等.过硫酸钠和过硫酸钾的热稳定性分析 [J]. 化工学报, 2006,57(12):2798-2800. Jiang H L, Zang n, Qian X M, et al. Thermal stability of potassium supersulphate and sodium supersulphate [J]. Journal of Chemical Industry and Engineering (China), 2006,57(12):2798-2800.
[22]	Kambhu A, Comfort S, Chokejaroenrat C, et al. Developing slow-release persulfate candles to treat BTEX contaminated groundwater [J]. Chemosphere, 2012,89(6):656-664.
[23]	Ma Y, Feng Y, Feng Y, et al. Characteristics and mechanisms of controlled-release KMnO4for groundwater remediation: Experimental and modeling investigations [J]. Water Research, 2020,(171):115385.
[24]	Ma J, Ma Y, Xun R, et al. Persulfate-based controlled release beads for in situ chemical oxidation of common organic pollutants [J]. Journal of Environmental Chemical Engineering, 2021,9:105627.
[25]	孙志鹏.卡托普利/Zn-Ti-LDHs的相互作用机理及药物释放动力学研究 [D]. 合肥:安徽理工大学, 2020. Sun Z P. The interaction mechanism of Captopril/Zn-Ti-LDHs and its release kinetics for Captopril [D]. Hefei: Anhui University of Science and Technology, 2020.
[26]	Bhaskar R, Murthy R, Miglani B D, et al. Novel method to evaluate diffusion controlled release of drug from resinate [J]. International Journal of Pharmaceutics, 1986,28(1):59-66.
[27]	Serra L, Doménech J, Peppas N A. Drug transport mechanisms and release kinetics from molecularly designed poly(acrylic acid-g-ethylene glycol) hydrogels [J]. Biomaterials, 2006,27(31):5440-5451.