烟梗生物炭持久性自由基反应活性的比较

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Abstract In this study, tobacco stem biochar prepared at different pyrolysis temperatures (300℃, 500℃ and 700℃) was used for the adsorption and degradation of organic pollutants p-nitrophenol (PNP). The aim of this research was to explore the relationship between the intensity of environmental persistent free radicals (EPFRs) on tobacco stem biochar and its reactivity towards organic pollutants degradation. The results showed that the intensity of EPFRs in the tobacco stem biochar increased from 6.155×10⁴ to 1.343×10⁵ at first and then declined to 5.458×10⁴ with the increase of pyrolysis temperature, while the degradation rate of PNP remained unchanged at around 31% and then declined to 14.64% with the increase of pyrolysis temperature. These phenomena indicated that the intensity of EPFRs in biochar was not directly correlated to its reactivity. The oxygen-centered EPFRs in biochar pyrolyzed at 300℃ could transfer electrons to oxygen molecules in the water and generate reactive oxygen species (ROS), thus promote the degradation of PNP. The carbon-centered EPFRs in biochar pyrolyzed at 500℃ and 700℃ could be consumed after reacting with water or pollutants, and the newly generated free radicals were stabilized on the surface of biochar, which led to a significant increase in their intensity but their degradation activity declined dramatically.

Key words： degradation of organic pollutants tobacco waste reactivity of persistent radical

Received: 08 January 2020

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X131

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	Articles by authors
	QIU Shu-yue
	ZHAO Ze-ying
	CHEN Fang-yuan
	LI Fang-fang
	DUAN Wen-yan

Cite this article:

QIU Shu-yue,ZHAO Ze-ying,CHEN Fang-yuan等. Comparison of reactivity of persistent free radicals on tobacco stem biochar[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(8): 3458-3464.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I8/3458

[1]	Rajapaksha A U, Chen S S, Tsang D C W, et al. Engineered/designer biochar for contaminant removal/immobilization from soil and water:Potential and implication of biochar modification[J]. Chemosphere, 2016,148:276-291.
[2]	Yang X, Tsibart A, Nam H, et al. Effect of gasification biochar application on soil quality:Trace metal behavior, microbial community and soil dissolved organic matter[J]. Journal of Hazardous Material, 2019,5;365:684-694.
[3]	Luo J, Li X, Ge C, et al. Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems[J]. Bioresource Technology, 2018,263:385-392.
[4]	Yang F, Zhang S, Li H, et al.Corn straw-derived biochar impregnated with, α-FeOOH nanorods for highly effective copper removal[J]. Chemical Engineering Journal, 2018,348:191-201.
[5]	马锋锋,赵保卫,刁静茹,等.磁性生物炭对水体中对硝基苯酚的吸附特性[J].中国环境科学, 2019,39(1):170-178. Ma F F, Zhao B W, Diao J R, et al. Adsorption characteristics ofp-nitrophenol removal by magnetic biochar[J]. China Environmental Sciencece, 2019,39(1):170-178.
[6]	Ruan X X, Sun Y Q, Du W M, et al. Formation, characteristics, and applications of environmentally persistent free radicals in biochars:A review[J]. Bioresource Technology, 2019,281:457-468.
[7]	Kotake T, Kawamoto H, Saka S. Mechanisms for the formation of monomers and oligomers during the pyrolysis of a softwood lignin[J]. Journal of Analytical & Applied Pyrolysis, 2014,105:309-316.
[8]	Collard F X, Blin J. A review on pyrolysis of biomass constituents:Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin[J]. Renewable and Sustainable Energy Reviews, 2014,38:594-608.
[9]	Fang G, Gao J, Liu C, et al. Key role of persistent free radicals in hydrogen peroxide activation by biochar:Implications to organic contaminant degradation[J]. Environmental Science & Technology, 2014,48(3):1902-1910.
[10]	Gehling W, Dellinger B. Environmentally persistent free radicals and their lifetimes in PM2.5[J]. Environmental Science & Technology, 2013,47(15):8172-8178.
[11]	Chen Q, Wang M, Wang Y, et al. Rapid determination of environmentally persistent free radicals (EPFRs) in atmospheric particles with a quartz sheet-based approach using electron paramagnetic resonance (EPR) spectroscopy[J]. Atmospheric Environment, 2018,184:140-145.
[12]	Liao S H, Pan B, Li H, et al. Detecting free radicals in biochars and determining their ability to inhibit the germination and growth of corn, wheat and rice seedlings[J]. Environmental Science & Technology, 2014,48(15):8581-8587.
[13]	Fang G, Zhu C, Dionysiou D D, et al. Mechanism of hydroxyl radical generation from biochar suspensions:Implications to diethyl phthalate degradation[J]. Bioresource Technology, 2015,176:210-217.
[14]	Fang G D, Liu C, Gao J, et al. Manipulation ofpersistent free radicals in biochar to activate persulfate for contaminant degradation[J]. Environmental Science & Technology, 2015,49(9):5645-5653.
[15]	姚淑华,马锡春,李士凤.秸秆生物炭活化过硫酸盐氧化降解苯酚[J].中国环境科学, 2018,38(11):4166-4172. Yao S H, Ma X C, Li S F. Straw biochar activated persulfate oxidation and degradation of phenol[J]. China Environmental Sciencece, 2018,38(11):4166-4172.
[16]	Yang J, Pan B, Li H, et al. Degradation of p-Nitrophenol on biochars:Role of persistent free radicals[J]. Environmental Science and Technology, 2015,50:694-700.
[17]	杨乾栩,和智君,杨蕾,等.复合酶条件优化对烟梗品质提升研究[J].食品与生物技术学报, 2016,35(11):1206-1211. Yang Q X, He Z J, Yang L, et al. Study on the improvement of tobacco stem quality by optimizing compound enzyme conditions[J]. Journal of Food and Biotechnology, 2016,35(11):1206-1211.
[18]	张建云.烟杆生物炭复配海泡石粉对重金属污染土壤的钝化效应及其对烟草种植的影响[D].杭州:浙江农林大学, 2018. Zhang J Y, The passivation effect of biochar mixed with sepiolite powder on heavy metal contaminated soil and its effect on tobacco cultivation[D]. Hanzhou:Zhejiang A & F University, 2018.
[19]	Forjána R, Asensio V, Rodríguez-Vila A, et al. Contribution of waste and biochar amendment to the sorption of metals in a copper mine tailing[J]. Catena, 2016,137:120-125.
[20]	GB/T 17664-1999《木炭和木炭试验方法》[S]. GB/T 17664-1999 Wood charcoal and test method of wood charcoal[S].
[21]	于奡,白令君.电子顺磁共振谱仪Bruker EMX EPR简介[J].现代仪器, 2001,3:21-22. Yu A, Bai L J. Introduction of Bruker EMX EPR electron paramagnetic resonance spectrometer[J]. Modern Instruments, 2001,3:21-22.
[22]	袁帅,赵立欣,孟海波,等.生物炭主要类型、理化性质及其研究展望[J].植物营养与肥料学报, 2016,22(5):1402-1417. Yuan S, Zhao L X, Meng H B, et al. The physicochemical properties of main biochar types and their research prospects[J]. Plant Nutrition and Fertilizer Science, 2016,22(5):1402-1417.
[23]	赵力,陈建,李浩,等.裂解温度和酸处理对生物炭中持久性自由基产生的影响[J].环境化学, 2017,36(11):2472-2478. Zhao L, Chen J, Li H, etal. Effects of pyrolysis temperature and acid treatment on the generation of persistent free radicals in biochar[J]. Environmental Chemistry, 2017,36(11):2472-2478.
[24]	周丹丹,屈芳舟,吴敏,等.植物根际分泌有机酸对生物炭吸附Pb (Ⅱ)的影响[J].中国环境科学, 2019,39(3):305-313. Zhou D D, Qu F Z, Wu M, et al. Plant rhizosphere secretion of organic acids on the influence of the biological carbon adsorption Pb (Ⅱ)[J]. China Environmental Science, 2019,39(3):305-313.
[25]	Zhang X, Yang W, Dong C. Levoglucosan formation mechanisms during cellulose pyrolysis[J]. Journal of Analytical and Applied Pyrolysis, 2013,104:19-27.
[26]	Dellinger B, Lomnicki S, Khachatryan L, et al. Formation and stabilization of persistent free radicals[J]. 2007,31(1):521-528.
[27]	Chen Z, Chen B, Zhou D, et al. Bisolute sorption and thermodynamic behavior of organic pollutants to biomass-derived biochars at two pyrolytic temperatures[J]. Environmental Science & Technology, 2012,46(22):12476-12483.
[28]	Lian F, Xing B. Black carbon (biochar) in water/soil environments:Molecular structure, sorption, stability, and potential risk[J]. Environ Science & Technology, 2017,51(23):13517-13532.
[29]	Zhu B Z, Zhao H T, Kalyanaraman B, et al. Metal-independent production of hydroxyl radicals by halogenated quinones and hydrogen peroxide:an ESR spin trapping study[J]. Free Radical Biology and Medicine, 2002,32(5):465-473.
[30]	Page S E, Sander M, Arnold W A, et al. Hydroxyl radical formation upon oxidation of reduced humic acids by oxygen in the dark[J]. Environmental Science & Technology, 2012,46(3):1590-1597.
[31]	Fang G, Gao J, Liu C, et al. Key role of persistent free radicals in hydrogen peroxide activation by biochar:Implications to organic contaminant degradation[J]. Environmental Science & Technology, 2014,48(3):1902-1910.