聚合氯化铝铁改性凹凸棒石对Cd污染土壤的钝化修复效应

任珺; 王艺蓉; 任汉儒; 仝云龙; 王彤玉; 陶玲

doi:DOI:10.13205/j.hjgc.202207018

聚合氯化铝铁改性凹凸棒石对Cd污染土壤的钝化修复效应

doi: DOI:10.13205/j.hjgc.202207018

任珺^1,2,3, ,,
王艺蓉^1,2,
任汉儒^1,2,
仝云龙^1,2,
王彤玉⁴,
陶玲^1,2,3

1. 兰州交通大学甘肃省黄河水环境重点实验室, 兰州 730070;
2. 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070;
3. 甘肃瀚兴环保科技有限公司, 兰州 730070;
4. 兰州大学大气科学学院, 兰州 730070

基金项目:

甘肃省教育厅产业支撑计划项目(2021CYZC-31)

甘肃省科技支撑计划(20JR2RA002)

兰州交通大学大学生科技创新项目(DXS-KJCX-2019-08,09)

详细信息

作者简介:
任珺(1968-),男,博士,教授,主要从事污染控制与修复研究。renjun@mail.lzjtu.cn

通讯作者:
任珺(1968-),男,博士,教授,主要从事污染控制与修复研究。renjun@mail.lzjtu.cn

计量
- 文章访问数: 262
- HTML全文浏览量: 33
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2021-10-09
- 网络出版日期: 2022-09-02

STABILIZATION REMEDIATION OF Cd-POLLUTED SOILS USING ATTALPULGITE

REN Jun^{1,2,3
, ,},
WANG Yirong^1,2,
REN Hanru^1,2,
TONG Yunlong^1,2,
WANG Tongyu⁴,
TAO Ling^1,2,3

1. Key laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Institute of Environmental Ecology, Lanzhou 730070, China;
3. Gansu Hanxing Environmental Protection Co., Ltd, Lanzhou 730070, China;
4. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730070, China

摘要

摘要: 土壤重金属Cd具有难降解、易迁移和累积性强等特点,会破坏土壤环境,威胁粮食安全。将聚合氯化铝铁负载到凹凸棒石上,制备5种聚合氯化铝铁改性凹凸棒石新型钝化材料,通过扫描电镜(SEM)表征实验、钝化实验和玉米盆栽实验评价聚合氯化铝铁改性凹凸棒石对土壤Cd的钝化效果和环境风险。结果表明:将聚合氯化铝铁改性凹凸棒石施用于土壤中,能显著降低污染土壤二乙烯三胺五乙酸(DTPA)提取态Cd和毒性特征浸出态(TCLP) Cd的浓度。其中,掺入聚合氯化铝铁比例(质量分数)为25%的改性凹凸棒石处理土壤中2种生物有效态Cd的含量降幅最大,分别为21.51%和22.19%。改性凹凸棒石的施用促进了玉米幼苗的生长,聚合氯化铝铁掺入比例为25%时钝化效果最佳,玉米幼苗茎长较对照组增加了52.2%,玉米幼苗茎、根鲜生物量较对照组分别增加了75.1%和64.5%,茎、根干生物量较对照组分别增加了80.5%和79.7%,玉米幼苗茎、根Cd的含量较对照组分别下降了43.4%和24.7%。聚合氯化铝铁改性凹凸棒石具有较大比表面积、良好的离子交换能力和表面络合性能,显著降低了土壤重金属的生物有效性,可应用于Cd污染农田土壤的钝化修复。
- 凹凸棒石 /
- 钝化修复 /
- 重金属污染 /
- 生态风险 /
- 土壤
Abstract: Cadium in soil has the characteristics of difficult degradation,easy migration accumulation,and is easily to cause damage to the soil environment and threatens food security.Five kinds of new stabilization materials were prepared by loading poly-aluminum ferric chloride on attapulgite.Scanning electron microscope (SEM) characterization,stabilization experiment and corn pot experiment were conducted to evaluate the stabilization effect and environmental risk of Cd in contaminated soil.The results showed that the concentrations of diethylenetriamine pentaacetic acid extracted Cd (DTPA),and toxic characteristic leached Cd (TCLP) were significantly reduced after the application of attapulgite modified with poly-aluminum ferric chloride.In the soil treated with attapulgite modified with a 25% mass ratio of poly-aluminum ferric chloride,the two bioavailable Cd concentrations decreased by 21.51% and 29.3%,respectively.The application of modified attapulgite promoted the growth of corn,and the treatment effect of modified attapulgite with 25% poly-aluminum ferric chloride was the best.In comparison to the control group,the shoot length of corn increased by 52.2%,and the fresh biomass of shoot and root increased by 75.1% and 64.5% respectively.Meanwhile,the dry biomass of shoot and root increased by 80.5% and 79.7% compared with CK.Furthermore,the content of Cd accumulated in the shoot and root of corn decreased by 43.4% and 24.7%,respectively.Attapulgite modified by poly-aluminum ferric chloride has larger specific surface area,higher ion exchange capacity and surface complexation properties,which greatly reduced the bioavailability of heavy metals in soil,so it could be used in stabilization remediation of Cd contaminated farmland soils.
- attapulgite /
- stabilization remediation /
- heavy metal pollution /
- ecological risk /
- soil

HTML全文

参考文献(43)

[1]	李剑睿,徐应明,林大松,等.农田重金属污染原位钝化修复研究进展[J].生态环境学报, 2014,23(4):721-728.
[2]	陈卫平,杨阳,谢天,等.中国农田土壤重金属污染防治挑战与对策[J].土壤学报, 2018,55(2):261-272.
[3]	MU J, HU Z Y, HUANG L J, et al. Influence of alkaline silicon-based amendment and incorporated with biochar on the growth and heavy metal translocation and accumulation of vetiver grass (Vetiveria zizanioides) grown in multi-metal-contaminated soils[J]. Journal of Soil and Sediments, 2019,19(5):2277-2289.
[4]	LIU Y S, TANG Y Y, ZHONG G S, et al. A comparison study on heavy metal/metalloid stabilization in Maozhou River sediment by five types of amendments[J]. Journal of soil and sediments, 2019,19(12):3922-3933.
[5]	GUO F Y, DING C F, ZHOU Z G, et al. Stability of immobilization remediation of several amendments on cadmium contaminated soils as affected by simulated soil acidification[J]. Ecotoxicology and Environmental Safety, 2018,161(10):164-172.
[6]	LIN J J, SUN M Q, SU B L, et al. Immobilization of cadmium in polluted soils by phytogenic iron oxide nanoparticles[J]. Science of the Total Environment, 2019,659(4):491-498.
[7]	GRAFE M, NACHTEGAAL M, SPARKS D. Formation of metal-arsenate precipitates at the goethite-water interface[J]. Environmental Science and Technology, 2004,38(24):6561-6570.
[8]	赵庆圆,李小明,杨麒,等.磷酸盐、腐殖酸与粉煤灰联合钝化处理模拟铅镉污染土壤[J].环境科学, 2018,39(1):389-398.
[9]	DAVID A M, JEFFREY E P, EDGAR S E. Vibrational analysis of palygorskite and sepiolite[J]. Clay and Clay Miner, 2002,50(5):667-680.
[10]	MAMINDY-PAJANY Y, HUREL C, GERET F, et al. Comparison of mineral-based amendments for ex-situ stabilization of trace elements (As, Cd, Cu, Mo, Ni, Zn) in marine dredged sediments:a pilot-scale experiment[J]. Journal of Hazardous Materials, 2013,252/253(15):213-219.
[11]	章绍康,弓晓峰,申钊颖,等.改性凹凸棒土对土壤中Cd²⁺吸附解吸及钝化效果影响[J].环境工程, 2019,37(3):192-197.
[12]	田振华,薛胜平.凹凸棒石改性及其修复重金属污染土壤的研究[J].应用化工, 2019,48(4):883-887.
[13]	章兴华,周丽芸,汤敏.聚合氯化铝铁的红外光谱研究[J].光谱学与光谱分析, 2002,22(1):39-42.
[14]	郑怀礼,刘克万,龙腾锐,等.聚合氯化铝铁(PAFC)絮凝剂污水除磷的研究[J].环境化学, 2005,24(6):64-66.
[15]	马放,李大鹏,郑丽娜,等.复合型生物絮凝剂与聚合氯化铝铁复配处理高藻水[J].中国给水排水, 2008,24(3):39-41.
[16]	赵莉,杨柳,常青,等. PAFC对水体中持久性有机污染物PFOA的混凝效果[J].环境工程学报, 2013,7(7):2437-2442.
[17]	任珺,刘丽莉,陶玲,等.甘肃地区凹凸棒石的矿物组成分析[J].硅酸盐通报, 2013,32(11):2362-2365.
[18]	陶玲,张晓郡,刘瑞珍,等.热改性坡缕石对土壤镉污染的钝化效果及对土壤镉生态毒性的影响[J].环境工程学报, 2021,15(6):2008-2017.
[19]	LIANG X F, LI N, HE L Z, et al. Inhibition of Cd accumulation in winter wheat (Triticum aestivum L.) grown in alkaline soil using mercapto-modified attapulgite[J]. Science of the Total Environment, 2019,688(10):818-826.
[20]	WEN J, ZENG G M. Chemical and biological assessment of Cd-polluted sediment for land use:the effect of stabilization using chitosan-coated zeolite[J]. Journal of Environment Management, 2018,212(4):46-53.
[21]	ZHANG H L, MA G F, SUN L N, et al. Effect of alkaline material on phytotoxicity and bioavailability of Cu, Cd, Pb and Zn in stabilized sewage sludge[J]. Environmental Technology, 2017,39(17):2168-2177.
[22]	HUANG G Y, GAO R L, YOU J W, et al. Oxalic acid activated phosphate rock and bone meal to immobilize Cu and Pb in mine soils[J]. Ecotoxicology and Environmental Safety, 2019,174(7):401-407.
[23]	HUANG Y, WANG M X, LI Z J, et al. In situ remediation of mercury-contaminated soil using thiol-functionalized graphene oxide/Fe-Mn composite[J].Journal of Hazardous Materials, 2019,373(7):783-790.
[24]	林海,靳晓娜,董颖博,等.膨润土对不同类型农田土壤重金属形态及生物有效性的影响[J].环境科学, 2019,40(2):945-952.
[25]	谭科艳,刘晓端,刘久臣,等.凹凸棒石用于修复铜锌镉重金属污染土壤的研究[J].岩矿测试, 2011,30(4):451-456.
[26]	闫家普,丁效东,崔良,等.不同改良剂及其组合对土壤镉形态和理化性质的影响[J].农业环境科学学报, 2018,37(9):1842-1849.
[27]	张定兵,张文辉,万亚珍.添加不等量聚合氯化铝铁对固定土壤砷的影响[J].应用化工, 2017,46(6):1148-1151.
[28]	武雷杰,杨秀娟,张路,等.聚合氯化铝(PAC)改性膨胀土的胀缩特性试验研究[J].长江科学院院报, 2020,37(1):84-89.
[29]	HERNÁNDEZ-MONTOYA V, PÉREZ-CRUZ M A, MENDOZA-CASTILLO D I, et al. Competitive adsorption of dyes and heavy metals on zeolitic structures[J]. Journal of Environmental Management, 2013,116(2):213-221.
[30]	任静华,廖启林,范健,等.凹凸棒粘土对镉污染农田的原位钝化修复效果研究[J].生态环境学报, 2017,26(12):2161-2168.
[31]	陈展祥,陈传胜,陈卫平,等.凹凸棒石及其改性材料对土壤镉生物有效性的影响与机制[J].环境科学, 2018,39(10):4744-4751.
[32]	刘左军,陈正宏,袁惠君,等.凹凸棒石粘土对土壤团粒结构及小麦生长的影响[J].土壤通报, 2010,41(1):142-144.
[33]	武成辉,李亮,雷畅,等.硅酸盐钝化剂在土壤重金属污染修复中的研究与应用[J].土壤, 2017,49(3):446-452.
[34]	ZHAN F D, ZENG W Z, YUAN X C, et al. Field experiment on the effects of sepiolite and biochar on the remediation of Cd-and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China[J]. Environmental Science Polluton Research, 2019,26(8):7743-7751.
[35]	任珺,张文杰,赵乾程,等.凹凸棒基土壤重金属钝化材料的热改性制备方法及功能研究[J].硅酸盐通报, 2018,37(3):781-785.
[36]	陶玲,杨欣,颜子皓,等.酸活化坡缕石制备重金属钝化材料的研究[J].非金属矿, 2018,41(1):11-14.
[37]	陶玲,管天成,刘瑞珍,等.热改性坡缕石对土壤Cd污染的钝化修复研究[J].农业环境科学学报, 2021,40(4):782-790.
[38]	陶玲,张倩,张雪彬,等.凹凸棒石-污泥共热解生物炭对玉米苗期生长特性和重金属富集效应的影响[J].农业环境科学学报, 2020,39(7):1512-1520.
[39]	余高,陈芬,赵成刚,等.高分子聚合物与钝化剂复配对汞污染土壤钝化修复研究[J].环境工程, 2021,39(4):174-179.
[40]	徐持平,周卫军,徐庆国.复配钝化剂对污染土壤中铅具有良好的稳定效果[J].基因组学与应用生物学, 2018,37(6):2443-2450.
[41]	方眠.广州市屋顶绿化成本及生态效益分析[D].广州:华南理工大学, 2015.
[42]	吴海勇,李明德,刘琼峰,等.农业有机废弃物还田的生态经济效益研究[J].土壤, 2012,44(5):769-775.
[43]	周伟,邓良基,贾凡凡,等.基于土壤重金属风险和经济效益的双孢蘑菇菌渣还田量估算[J].农业环境科学学报, 2017,36(3):507-514.