改性纳米TiO<sub>2</sub>对污染土壤砷形态及土壤性质的影响

李海燕; 强瑀; 呼艳姣; 刘静; 秦樊鑫

doi:10.13205/j.hjgc.202208019

改性纳米TiO₂对污染土壤砷形态及土壤性质的影响

doi: 10.13205/j.hjgc.202208019

李海燕¹,
强瑀¹,
呼艳姣²,
刘静²,
秦樊鑫^2,3, ,

1. 贵州师范大学贵州省山地环境信息系统与生态环境保护重点实验室, 贵阳 550001;
2. 贵州师范大学生命科学学院, 贵阳 550025;
3. 贵州师范大学贵州省植物生理与发育调控重点实验室, 贵阳 550025

基金项目:

国家自然科学基金(21467005)

详细信息

作者简介:
李海燕(1995-),女,硕士研究生,主要研究方向为环境分析化学。1335716465@qq.com

通讯作者:
秦樊鑫(1978-),男,博士,教授,主要研究方向为环境污染控制与修复。qinfanxin@gznu.edu.cn

计量
- 文章访问数: 121
- HTML全文浏览量: 8
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2021-07-13
- 刊出日期: 2022-11-08

EFFECT OF MODIFIED NANO-TIO₂ ON ARSENIC SPECIES AND ENZYME ACTIVITY IN ARSENIC CONTAMINATED SOIL

LI Haiyan¹,
QIANG Yu¹,
HU Yanjiao²,
LIU Jing²,
QIN Fanxin^{2,3
, ,}

1. Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China;
2. School of Life Sciences, Guizhou Normal University, Guiyang 550025, China;
3. Guizhou Provincial Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Guiyang 550025, China

摘要

摘要: 基于纳米TiO₂对土壤砷的稳定效果,以自制的改性纳米TiO₂(活性炭负载纳米二氧化钛TiO₂/AC和铁改性活性炭负载纳米二氧化钛 Fe-TiO₂/AC)为试验材料,通过室内模拟试验,研究改性纳米TiO₂对土壤砷形态、土壤pH、土壤养分及土壤酶活性的影响。结果表明:在2种改性纳米TiO₂的作用下,土壤中砷活性较强的非专性和专性吸附态均降低,惰性的砷无定形和弱结晶水合铁铝氧化物结合态和残渣态均升高。土壤pH随改性纳米TiO₂施用量的增加而升高,速效钾含量均增加,而土壤有效氮减少。在TiO₂/AC和Fe-TiO₂/AC作用下,土壤pH分别为7.07~7.21、7.28~7.43。施加TiO₂/AC和Fe-TiO₂/AC,速效钾的增幅分别为17.2%~32.2%和28.7%~29.5%,有效氮含量降幅分别为25.1%~37.8%和23.5%~44.6%。2种改性纳米TiO₂对土壤中性、碱性磷酸酶的活性均有激活作用;TiO₂/AC对土壤过氧化氢酶和脲酶活性具有一定的抑制作用,但铁改性后的Fe-TiO₂/AC抑制作用减弱,且在施加量为0.3%土壤过氧化氢酶活性比对照提高了19.5%;施加TiO₂/AC后土壤脲酶活性下降范围为63.0%~76.6%,但在0.4%Fe-TiO₂/AC作用下,土壤脲酶活性较对照上升了5.8%。可见,改性纳米TiO₂可以使土壤中砷由活性态向惰性态转化,对土壤性质的影响可通过铁改性来进行控制。
- 纳米TiO₂ /
- 砷形态 /
- 土壤养分 /
- 土壤酶活性
Abstract: Based on the stabilizing effect of nano-TiO₂ dioxide on soil arsenic, using self-made modified nano-TiO₂ (TiO₂/AC and Fe-TiO₂/AC) as the test material, the effects of modified nano-TiO₂ on the speciation of As, soil pH, nutrients and enzymatic activities were studied through indoor simulation experiments. The results showed that: with the action of TiO₂/AC and Fe-TiO₂/AC, the non-specific adsorption state and obligate adsorption state of arsenic with strong activity in soil decreased by 1.1%~6.3%, 1.8%~9.5% and 2.1%~6.9%, 10.1%~18%, respectively. While the bound and residual states of inert arsenic amorphous and weakly crystalline hydrated iron-aluminum oxides increased by 1.0%~14.8%, 2.2%~10.5% and 3.7%~16.9%, 6.5%~16.7%, respectively. With the action of TiO₂/AC and Fe-TiO₂/AC, the soil pH increased by 0.05~0.13 and 0.20~0.35, respectively. The increase rates of available potassium were 17.2%~32.2% and 28.7%~29.5%, and the decrease rates of available nitrogen content were 25.1%~37.8% and 23.5%~44.6%, respectively. Two kinds of modified nano-TiO₂ all had activating effect on soil neutral and alkaline phosphatase activity. TiO₂/AC had an inhibiting effect on activity of urease and catalase, and after iron modification, its inhibiting effect tended to be weaker. The soil catalase activity increased by 19.5% compared with the control when the application amount was 0.3%; the soil urease activity decreased by 63.0%~76.6% after applying TiO₂/AC, but under the action of 0.4% Fe-TiO₂/AC, the soil urease activity decreased by 63.0%~76.6%. Urease activity increased by 5.8% compared with the control. In short, the modified nano-TiO₂ transformed arsenic in soil from active states to inert states, and the influence on the soil properties could be controlled by iron modification.
- nano-TiO₂ /
- arsenic speciation /
- soil nutrients /
- soil enzyme activity

HTML全文

参考文献(33)

[1]	许文泽,杨春风,李静,等.二氧化钛光催化氧化阿散酸[J].环境科学,2016,37(1):193-197.
[2]	周雄,张金洋,王定勇,等.纳米TiO₂吸附HgCl₂水溶液中Hg(Ⅱ)[J].环境科学,2016(1):220-227.
[3]	段雅楠,张兴惠,李梦.TiO₂/活性碳纤维膜光催化降解甲醛的研究[J].化工新型材料,2018,46(2):127-130.
[4]	赵顶.纳米TiO_(2-_x₎的制备及其对砷离子吸附特性的研究[D].昆明:昆明理工大学,2019.
[5]	赵红艳,陈爽,石中亮.纳米Fe₂O₃/TiO₂复合材料用于吸附与氧化除As(Ⅲ)[J].沈阳化工大学学报,2019,33(1):46-53.
[6]	王阿楠,骆永明.纳米二氧化钛光催化修复二苯砷酸污染土壤的研究[J].土壤,2015,47(1):107-112.
[7]	陈美凤,李新丽,杨沛林,等.改性纳米TiO₂对砷污染土壤的稳定化试验[J].环境工程,2020,38(10):222-227.
[8]	范峰华,郑荣波,郭雪莲,等.二氧化钛纳米颗粒对湖滨沼泽土壤氮矿化的影响[J].环境科学学报,2020,40(6):2220-2228.
[9]	叶兴银,张卫,龙精华,等.人工纳米颗粒输入对稻田土壤Cd形态转化及生物有效性的影响[J].环境工程学报,2018,12(12):3426-3432.
[10]	DU W C,SUN Y Y,JI R,et al.TiO₂ and ZnO nanoparticles negatively affect wheat growth and soil enzyme activities in agricultural soil[J].Journal of Environmental Monitoring,2011,13(4):822-828.
[11]	刘启明,李瑶,葛健,等.纳米TiO₂和ZnO颗粒对红壤理化性质的影响[J].地球与环境,2019,47(3):380-384.
[12]	XU C,PENG C,SUN L J,et al.Distinctive effects of TiO₂ and CuO nanoparticles on soil microbes and their community structures in flooded paddy soil[J].Soil Biology and Biochemistry,2015,86(86):24-33.
[13]	李琳慧.纳米TiO₂对土壤氮转化相关微生物和酶的影响[D].长春:吉林大学,2015.
[14]	孙影,李琳慧,郭平,等.纳米 TiO₂对土壤中氮转化相关细菌活性的影响[J].科学技术与工程,2016,16(20):295-300.
[15]	张金洋,王定勇,梁丽,等.纳米TiO₂对土壤重金属释放及形态变化的影响[J].环境科学,2016,37(5):1946-1952.
[16]	GIL-DÍAZ M,ALONSO J,RODRÍGUEZ-VALDÉSE,et al.Comparing different commercial zero valent iron nanoparticles to immobilize As and Hg in brownfield soil[J].Science of the Total Environment,2017(584/585):1324-1332.
[17]	YANG P L,QIN F X,DAI G C,et al.Reducing the leachability and bioaccessibility of arsenic in soils using supported nano titanium dioxide[J].Soil and Sediment Contamination:An International Journal,2019,28(4):347-359.
[18]	WENZEL W W,KIRCHBAUMER N,PROHASKA T,et al.Arsenic fractionation in soils using an improved sequential extraction procedure[J].Analytica Chimica Acta,2001,436(2):309-323.
[19]	国家质量监督检验检疫总局,国家标准化管理委员会.土壤质量总汞、总砷、总铅的测定原子荧光法第2部分:土壤中总砷的测定:GB/T 22105.2—2008[S].北京:中国标准出版社,2008.
[20]	鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000.
[21]	关松荫.土壤酶及其研究法[M].北京:农业出版社,1986.
[22]	SUNDARAY S K,NAYAK B B,LIN S,et al.Geochemical speciation and risk assessment of heavy metals in the river estuarine sediments—A case study:mahanadi basin,India[J].Journal of Hazardous Materials,2011,186(2/3):1837-1846.
[23]	窦韦强,安毅,秦莉,等.土壤pH对镉形态影响的研究进展[J].土壤,2020,52(3):439-444.
[24]	宋宜,王华伟,吴雅静,等.三价铁促进生物氧化锰稳定土壤砷的效果和机制[J].环境科学学报,2020,40(4):1460-1466.
[25]	MOORE T J,RIGHTMIRE C M,VEMPATI R K.Ferrous iron treatment of soils contaminated with arsenic-containing wood-preserving solution[J].Journal of Soil Contamination,2000,9 (4):375-405.
[26]	XU W Q,JIN Y,REN Y S,et al.Synergy mechanism for TiO₂/activated carbon composite material:photocatalytic degradation of methylene blue solution[J].The Canadian Journal of Chemical Engineering,2022,100(2):276-290.
[27]	KOMAREK M,VANEK A,ETTLER V.Chemical stabilization of metals and arsenic in contaminated soils using oxides-a review[J].Environmental Pollution,2013,172:9-22.
[28]	刘启明,吴泽恩,曹英兰,等.纳米TiO₂对耕作红壤土壤微生物活性的影响[J].生态环境学报,2014,23 (5):859-863.
[29]	黄志博,石艳,吴晓辉.蒙脱土有机改性研究进展[J].高分子通报,2021(10):1-10.
[30]	MALANDRINO M,ABOLLINO O,BUOSO S,et al.Accumulation of heavy metals from contaminated soil to plants and evaluation of soil remediation by vermiculite[J].Chemosphere,2011,82(2):169-178.
[31]	ASADISHAD B,CHAHAL S,AKBARI A,et al.Amendment of agricultural soil with metal nanoparticles:effects on soil enzyme activity and microbial community composition[J].Environmental Science & Technology,2018,52(4):1908-1918.
[32]	尹勇.三种金属氧化物纳米材料对水稻幼苗生长及根际微生物群落结构的影响[D].桂林:广西师范大学,2019.
[33]	方国东,司友斌.纳米Fe₃O₄对红壤微生物数量、酶活性及2,4-D降解的影响[J].中国农业科学,2011,44(6):1165-1172.