骨炭粉对Cd污染农田的修复效果与稳定性评价

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (455 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了探明骨炭粉对Cd污染土壤的修复效果及稳定性，以潮土与红壤Cd污染农田土壤为对象，基于土壤Cd有效态、作物降Cd率（DR，%）及降Cd失活率（IR，%）等指标，研究田间条件下施用3种浓度（0.25%、0.50%及1.0%）骨炭粉对Cd污染土壤的修复效果及120，360d后修复效果的稳定性.结果表明：骨炭粉处理均能有效促进潮土与红壤中作物生长，增加作物产量.施用骨炭粉能不同程度提高土壤中pH值、阳离子交换量（CEC）、全磷及有效磷含量；其中，0.5%和1.0%骨炭粉处理均显著（P<0.05）提高土壤pH值、土壤全磷及有效磷含量.与对照相比，不同骨炭粉处理120d后潮土和红壤中有效态Cd含量分别降低32.1%~48.4%、32.8%~56.2%，360d后土壤中有效态Cd仍然显著低于对照，降幅为26.9%~37.8%、25.8%~39.5%.对修复后三季作物Cd吸收测定结果表明，与对照相比，不同浓度（0.25%~1.0%）骨炭粉处理的第一季作物降Cd率（DR_-Cd）分别达36.0%~60.4%、33.9%~58.2%，作物降Cd率随骨炭粉施用量增加而增加.基于降Cd失活率（IR_-Cd）对骨炭粉修复效果的稳定性测定结果表明，潮土与红壤施用骨炭粉360d后，第三季作物降Cd失活率IR_-Cd为21.2%~34.7%和6.2%~21.6%，表明在酸性红壤中修复效果的稳定性大于潮土.综上骨炭粉对Cd污染土壤的修复效果及其稳定性结果表明，骨炭粉在Cd污染农田土壤修复中具有较大应用价值.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	孙晓艺
	王丹
	王萌
	郑灿
	陈世宝

关键词 ：骨炭粉, 作物, Cd, 修复效果, 稳定性评价

Abstract：To investigate the remediation effect and its sustainability of bone charcoal on Cd polluted soil, this paper studied the remediation effect of bone charcoal application (0.25%, 0.50% and 1.0%) on Cd polluted soils, i.e. the fluvo-aquatic soil in Henan province and red earth in Hunan province, the phytoavailability of Cd in soil, the decreasing rate of Cd in crops (DR,%) and inactivation rate (IR,%) of Cd reducing defined as comparison with the first season crop, etc were used to evaluate the remediation efficiency and its sustainability after 120d and 360d application under field conditions. all bone charcoal applications could effectively promote the growth of crops and increase the yield of crops in tested soils. The application of bone charcoal improved the pH value, CEC, total P and available P content in soils to various degrees. Among the treatments, the bone charcoal application with 0.5% and 1.0% (w/w) significantly (P<0.05) improved the pH value, total P and available P content in soils when compared with the control groups. The content of available Cd as extracted with DPTA-CaCl₂-TEA in fluvo-aquatic soil and red earth decreased by 32.1%~48.4% and 32.8%~56.2% respectively after 120d of bone charcoal application treatments. The content of DPTA-CaCl₂-TEA-Cd in the soils was still significantly lower than that of the control groups after 360d, with a decrease of 26.9%~37.8% and 25.8%~39.5%, respectively. The uptake of Cd by three-season rotation crops showed that, as compared with the controls, the decreasing rate (DR,%) of Cd uptake by first season crop treated with different application levels (0.25%~1.0%) of bone charcoal ranged from 36.0% to 60.4% for fluvo-aquatic soil and 33.9% to 58.2% for red earth, respectively, the decreasing rate (DR,%) of Cd increased with the application level of bone charcoal. The inactivation rate (IR,%) of Cd was used to evaluate the sustainability of remediation efficiency in this study, the result indicated that the IRs of Cd for the third season crop ranged from 21.2%~34.7% in fluvo-aquatic soil and 6.2% to 21.6% in red earth, respectively, which indicated that the sustainability of remediation efficiency for acidic red earth was better than that in fluvo-aquatic soil. Taking into account all these factors of remediation effect and the sustainability of remediation efficiency, bone charcoal could be potentially used in the remediation of Cd polluted soil.

Key words： bone charcoal crops Cd remediation effect sustainability assessment

收稿日期: 2020-02-03

PACS:

X53

基金资助:国家自然科学基金（41877387）；国家重点研发计划项目（2016YFD0800707，2017YFD0800900）

通讯作者: 陈世宝,研究员,chenshibao@caas.cn E-mail: chenshibao@caas.cn

作者简介: 孙晓艺(1997-),女,辽宁葫芦岛人,中国农业科学院农业资源与农业区划研究所硕士研究生,主要从事土壤重金属污染机制与修复相关研究.

引用本文:

孙晓艺, 王丹, 王萌, 郑灿, 陈世宝. 骨炭粉对Cd污染农田的修复效果与稳定性评价[J]. 中国环境科学, 2020, 40(10): 4449-4456. SUN Xiao-yi, WANG Dan, WANG Meng, ZHENG Can, CHEN Shi-bao. Remediation effect of bone charcoal on Cd polluted soil and its sustainability assessment under field condition. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4449-4456.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2020/V40/I10/4449

[1]	张桃林.科学认识和防治耕地土壤重金属污染[J]. 土壤, 2015, 47(3):435-439. Zhang T L. More comprehensive understanding and effective control of heavy metal pollution of cultivated soils in China[J]. Soils, 2015,47(3):435-439.
[2]	陈世宝,王萌,李杉杉,等.中国农田土壤重金属污染防治现状与问题思考[J]. 地学前缘, 2019,2019,26(6):35-41. Chen S B, Wang M, Li S S, et al. Current status of and discussion on farmland heavy metal pollution prevention in China[J]. Earth Science Frontiers, 2019,26(6):35-41.
[3]	庄国泰.我国土壤污染现状与防控策略[J]. 中国科学院院刊, 2015,30(4):477-483. Zhuang G T. Current situation of national soil pollution and strategies on prevention and control[J]. Bulletin of the Chinese Academy of Sciences, 2015,30(4):477-483.
[4]	徐建明,孟俊,刘杏梅,等.我国农田土粮壤食重安金全属保污障染防治与粮食安全保障[J]. 中国科学院院刊, 2018,33(2):153-159. Xu J M, Meng J, Liu X M, et al. Control of heavy metal pollution in farmland of China in terms of food security[J]. Bulletin of the Chinese Academy of Sciences, 2018,33(2):153-159.
[5]	Li S S, Wang M, Chen S B. Use of soil amendments to reduce cadmium accumulation in rice by changing Cd distribution in soil aggregates[J]. Environmental Science and Pollution Research, 2019,26:20929-20938.
[6]	Cui H B, Ma K Q, Fan Y C, et al. Stability and heavy metal distribution of soil aggregates affected by application of apatite, lime, and charcoal[J]. Environmental Science and Pollution Research, 2016,23:10808-10817.
[7]	Diagboya P N, Olu-Owolabi B I, Adebowale K O. Effects of time, soil organic matter, and iron oxides on the relative retention and redistribution of lead, cadmium, and copper on soils[J]. Environmental Science and Pollution Research, 2015,22:10331-10339.
[8]	王林,徐应明,梁学峰,等.广西刁江流域Cd和Pb复合污染稻田土壤的钝化修复[J]. 生态与农村环境学报, 2012,28(5):563-568. Wang L, Xu Y M, Liang X F, et al. In-situ remediation of Cd-Pb polluted paddy soil in Diaojiang Guangxi province[J]. Journal of Ecology and Rural Environment, 2012,28(5):563-568.
[9]	黄益宗,郝晓伟.赤泥、骨炭和石灰对玉米吸收积累As、Pb和Zn的影响[J]. 农业环境科学学报, 2013,32(3):456-462. Huang Y Z, Hao X W. Effect of red mud, bone char and lime on uptake and accumulation of As, Pb and Zn by Maize planted in contaminated soil[J]. Journal of Agro-Environment Science, 2013, 32(3):456-462.
[10]	杨昆,杜彩艳,段宗颜,等.不同改良剂处理对玉米生长和吸收Cd影响研究[J]. 中国农学通报, 2017,33(22):7-12. Yang K, Du C Y, Duan Z Y, et al. Effects of different amendments on growth and cadmium uptake in zea mays[J]. Chinese Agricultural Science Bulletin, 2017,33(22):7-12.
[11]	Guo F, Ding C, Zhou Z, et al. Effects of combined amendments on crop yield and cadmium uptake in two cadmium contaminated soils under rice-wheat rotation[J]. Ecotoxicology and Environmental Safety, 2017,148:303-310.
[12]	林爱军,张旭红,苏玉红,等.骨炭修复重金属污染土壤和降低基因毒性的研究[J]. 环境科学, 2007,28(2):232-237. Lin A J, Zhang X H, Su Y H, et al. Chemical fixation of metals in soils using bone char and assessment of soil genotoxicity[J]. Environmental Science, 2007,28(2):232-237.
[13]	李红,区杰泳,颜增光,等.牛骨炭与伊/蒙黏土组配改良剂对土壤中Cd的钝化效果[J]. 环境科学研究, 2018,31(4):725-731. Li H, Qu J Y, Yan Z G, et al. Immobilization of soil cadmium using combined amendments of illite/smectite clay with cattle bone char[J]. Research of Environmental Sciences, 2018,31(4):725-731.
[14]	Hodson M E, Valsami-Jones E, Cotter-Howells J D. Bone meal additions as a remediation treatment for metal contaminated soil[J]. Environmental Science & Technology, 2000,34:3501-3507.
[15]	鲁如坤.土壤农业化学分析方法[M]. 北京:中国农业科技出版社, 1999. Lu R K. Agro-chemical analysis of soil[M]. Beijing:China Agricultural Science and Technology Press, 1999.
[16]	GB/T 17141-1997土壤质量铅、镉的测定石墨炉原子吸收分光光度法[S]. GB/T 17141-1997 Soil quality——determination of lead, cadmium-graphite furnace atomic absorption spectrophotometry[S].
[17]	郑涵,王萌,段淑辉,等.基于籽粒Cd消减率与边际效率评价Cd污染稻田的修复效果[J]. 农业工程学报, 2018,34(1):217-223. Zheng H, An P, Duan S H, et al. Remediation effect of Cd polluted paddy soil evaluated by grain Cd reduction rate and marginal efficiency[J]. Transactions of the Chinese Society of Agricultural Engineering, 2018,34(1):217-223.
[18]	刘彬,孙聪,陈世宝,等.水稻土中外源Cd老化的动力学特征与老化因子[J]. 中国环境科学, 2015,35(7):2137-2145. Liu B, Sun C, Chen S B, et al. Dynamic characteristics and ageing factors of Cd added to paddy soils with various properties[J]. China Environmental Science, 2015,35(7):2137-2145.
[19]	Adriano D C. Trace elements in terrestrial environments:Biogeochemistry bioavailability and risks of metals, second edition[M]. Springer, New York, NY. 2001.
[20]	Chen S B, Zhu Y G, Ma Y B, et al. Effect of bone char application on Pb Bioavailability in a Pb-contaminated soil, Environmental Pollution[J], 2006,139(3):433-439.
[21]	Melamed R, Cao X D, Chen M, et al. Field assessment of lead immobilization in a contaminated soil after phosphate application[J]. Science of the Total Environment, 2003,305:117-127.