高级搜索

6种低分子有机酸对针铁矿、蒙脱石和生物炭中结合态Cd活化效果的对比

,  ,  ,  , 

downloadPDF

上一篇

下一篇

罗涛, 李取生, 陈惠君, 方皓, 魏佳. 6种低分子有机酸对针铁矿、蒙脱石和生物炭中结合态Cd活化效果的对比[J]. 环境工程学报, 2018, 12(7): 2047-2055. doi: 10.12030/j.cjee.201801038
引用本文: 罗涛, 李取生, 陈惠君, 方皓, 魏佳. 6种低分子有机酸对针铁矿、蒙脱石和生物炭中结合态Cd活化效果的对比[J]. 环境工程学报, 2018, 12(7): 2047-2055. doi: 10.12030/j.cjee.201801038
shu
LUO Tao, LI Qusheng, CHEN Huijun, FANG Hao, WEI Jia. Comparison of activation effects of six kinds of low molecular weight organic acids on Cd bound to goethite, montmorillonite and biochar[J]. Chinese Journal of Environmental Engineering, 2018, 12(7): 2047-2055. doi: 10.12030/j.cjee.201801038
Citation: LUO Tao, LI Qusheng, CHEN Huijun, FANG Hao, WEI Jia. Comparison of activation effects of six kinds of low molecular weight organic acids on Cd bound to goethite, montmorillonite and biochar[J]. Chinese Journal of Environmental Engineering, 2018, 12(7): 2047-2055. doi: 10.12030/j.cjee.201801038
shu

6种低分子有机酸对针铁矿、蒙脱石和生物炭中结合态Cd活化效果的对比

  • 1.

    暨南大学环境学院，广州 510632

  • 2.

    广东省环境污染控制与修复材料中心，广州 510632

  • 基金项目:

    国家自然科学基金资助项目（41673094）

    广东省科技计划项目(2016A020221015，2017A010105005)

Comparison of activation effects of six kinds of low molecular weight organic acids on Cd bound to goethite, montmorillonite and biochar

  • 1.

    School of Environment, Jinan University, Guangzhou 510632, China

  • 2.

    Guangdong Province Environmental Pollution Control and Rehabilitation Materials Center, Guangzhou 510632, China

  • Fund Project:

  • 摘要: 选择3种常用的土壤重金属稳定介质针铁矿、蒙脱石和生物炭，首先通过吸附实验使其对Cd达到吸附平衡（8、16和4 h），并通过氯化镁洗脱获得稳定结合的Cd（2.52、0.93和1.04 mg·g-1）。随后分别用柠檬酸、苹果酸、马来酸、酒石酸、草酸、琥珀酸6种常见的植物根际低分子有机酸进行结合态Cd活化实验，测定活化率和活化量，对比活化效果。结果表明，6种低分子有机酸对针铁矿、蒙脱石、生物炭中结合态Cd的活化效果随浓度的增加而增加，其中柠檬酸的活化作用最大，其次为草酸，其余4种酸的活化效果差异不显著。柠檬酸随浓度增加，其对Cd活化率的线性增长率最高，在针铁矿、蒙脱石、生物炭中分别为1.74%、4.71%、2.12%。在250 μmol·L-1时，柠檬酸对针铁矿、蒙脱石、生物炭3种材料中Cd的活化率分别达到4.2%、11.0%、5.6%。对比研究表明，针铁矿吸附Cd效率高且稳定，蒙脱石吸附Cd效率低且易于被低分子有机酸活化。
    Abstract: Three commonly used stable mediums for remediation of soil heavy metals including goethite, montmorillonite and biochar were selected to investigate the activation effects of cadmium (Cd) stably bound to them by six low molecular weight organic acids (citric acid, malic acid, maleic acid, tartaric acid, oxalic acid and succinic acid respectively) which were often released by root of plants. The adsorption equilibrium (8, 16 and 4 h) of Cd on the three mediums was obtained by adsorption experiment. The Cd stably bound to mediums (2.52, 0.93 and 1.04 mg·g-1) was obtained by MgCl2 elution. Subsequently, the quantity of Cd activated by six low molecular weight organic acids was measured. The results showed that the activation of Cd bound to goethite, montmorillonite and biochar by six acids increased significantly with elevated acid concentrations. Citric acid had the highest activation effect, followed by oxalic acid, while the rest had no significant effects. The linear increase rate of citric acid with increasing concentrations was the highest, with the time of 1.74%, 4.71% and 2.12% in goethite, montmorillonite and biochar, respectively. The activation rates of Cd bound to goethite, montmorillonite and biochar were 4.2%, 11.0% and 5.6%, respectively at 250 μmol·L-1of citric acid. In general, goethite adsorbed Cd with higher efficiency and stability, while the Cd adsorption by montmorillonite was relatively low and easily activated by low molecular weight organic acids.
  • 加载中
  • [1] GUO G, ZHOU Q, MA L Q.Availability and assessment of fixing additives for the in situ remediation of heavy metal contaminated soils: A review[J].Environmental Monitoring & Assessment,2006,116(1/2/3):513-528 10.1007/s10661-006-7668-4
    [2] 赵秋香, 黄晓纯, 李媛媛, 等. 蒙脱石-OR-SH复合体修复剂对重金属污染土壤中Cd的钝化效果[J]. 环境化学,2014,33(11):1871-1877
    [3] 林志灵, 曾希柏, 张杨珠, 等. 人工合成铁、铝矿物和镁铝双金属氧化物对土壤砷的钝化效应[J]. 环境科学学报,2013,33(7):1953-1959
    [4] JIANG J, XU R K, JIANG T Y, et al.Immobilization of Cu(II), Pb(II) and Cd(II) by the addition of rice straw derived biochar to a simulated polluted ultisol[J].Journal of Hazardous Materials,2012,229–230:145-150 10.1016/j.jhazmat.2012.05.086
    [5] 郭文娟. 生物炭对镉污染土壤的修复效应及其环境影响行为[D].北京：中国农业科学院,2013
    [6] FRIESL W, FRIEDL J, PLATZER K, et al.Remediation of contaminated agricultural soils near a former Pb/Zn smelter in austria: Batch, pot and field experiments[J].Environmental Pollution,2006,144(1):40-50 10.1016/j.envpol.2006.01.012
    [7] 王晨, 王海燕, 赵琨, 等. 硅对镉、锌、铅复合污染土壤中黑麦草生理生化性质的影响[J]. 生态环境,2008,17(6):2240-2245
    [8] 易龙生, 王文燕, 陶冶, 等. 有机酸对污染土壤重金属的淋洗效果研究[J]. 农业环境科学学报,2013,32(4):701-707
    [9] DI PALMA L, MECOZZI R.Heavy metals mobilization from harbour sediments using edta and citric acid as chelating agents[J].Journal of Hazardous Materials,2007,147(3):768-775 10.1016/j.jhazmat.2007.01.072
    [10] KUO S, LAI M S, LIN C W.Influence of solution acidity and CaCl2 concentration on the removal of heavy metals from metal-contaminated rice soils[J].Environmental Pollution,2006,144(3):918-925 10.1016/j.envpol.2006.02.001
    [11] ROUT K, DASH A, MOHAPATRA M, et al.Manganese doped goethite: Structural, optical and adsorption properties[J].Journal of Environmental Chemical Engineering,2014,2(1):434-443 10.1016/j.jece.2014.01.001
    [12] 罗文倩，魏世强. 镉在针铁矿、腐殖酸及其复合胶体上吸持行为比较研究[J].中国农学通报,2009,25(3):255-259
    [13] QIN F, SHAN X Q, WEI B.Effects of low-molecular-weight organic acids and residence time on desorption of Cu, Cd, and Pb from soils[J].Chemosphere,2004,57(4):253-263 10.1016/j.chemosphere.2004.06.010
    [14] GAO Y, HE J, LING W, et al.Effects of organic acids on copper and cadmium desorption from contaminated soils[J].Environment International,2003,29(5):613-618 10.1016/S0160-4120(03)00048-5
    [15] ELLIOTT H A, SHASTRI N L.Extractive decontamination of metal-polluted soils using oxalate[J].Water，Air & Soil Pollution,1999,110(3/4):335-346
    [16] 洪汉烈,闵新民. 量子化学方法研究矿物的表面化学[M].武汉：中国地质大学出版社, 2004
    [17] MANCEAU A, NAGY K L, SPADINI L, et al.Influence of anionic layer structure of Fe-oxyhydroxides on the structure of Cd surface complexes[J].Journal of Colloid and Interface Science,2000,228(2):306-316 10.1006/jcis.2000.6922
    [18] 杨咏华. 镉离子 (II) 在针铁矿表面化学吸附的理论研究[D].青岛：中国海洋大学,2008
    [19] MUSTAFA G, KOOKANA R S, SINGH B.Desorption of cadmium from goethite: Effects of pH, temperature and aging[J].Chemosphere,2006,64(5):856-865 10.1016/j.chemosphere.2005.10.041
    [20] BARROW N, BRUMMER G, FISCHER L.Rate of desorption of eight heavy metals from goethite and its implications for understanding the pathways for penetration[J].European Journal of Soil Science,2012,63(3):389-398 10.1111/j.1365-2389.2012.01450.x
    [21] 罗远恒,顾雪元, 吴永贵, 等. 钝化剂对农田土壤镉污染的原位钝化修复效应研究[J]. 农业环境科学学报,2014,33(5):890-897
    [22] 郝红英, 何孟常, 林春野. 采用XPS研究镉在蒙脱石表面的吸附机理[J]. 环境化学,2007,26(6):797-800
    [23] LEHMANN J, GAUNT J, RONDON M.Bio-char sequestration in terrestrial ecosystems：A review[J].Mitigation and Adaptation Strategies for Global Change,2006,11(2):395-419 10.1007/s11027-005-9006-5
    [24] REGMI P, GARCIA-MOSCOSO J L, KUMAR S, et al.Removal of copper and cadmium from aqueous solution using switchgrass biochar produced via hydrothermal carbonization process[J].Journal of Environmental Management,2012,109:61-69 10.1016/j.jenvman.2012.04.047
    [25] HUANG L, HU H, LI X, et al.Influences of low molar mass organic acids on the adsorption of Cd2+ and Pb2+ by goethite and montmorillonite[J].Applied Clay Science,2010,49(3):281-287
    [26] LACKOVIC K, ANGOVE M J, WELLS J D, et al.Modeling the adsorption of Cd (II) onto goethite in the presence of citric acid[J].Journal of Colloid and Interface Science,2004,269(1):37-45 10.1016/j.jcis.2003.08.041
    [27] ABOLLINO O, ACETO M, MALANDRINO M, et al.Adsorption of heavy metals on Na-montmorillonite.Effect of pH and organic substances[J].Water Research,2003,37(7):1619-1627 10.1016/S0043-1354(02)00524-9
    [28] BEESLEY L, MORENOJIMENEZ E, GOMEZEYLES J L.Effects of biochar and greenwaste compost amendments on mobility, bioavailability and toxicity of inorganic and organic contaminants in a multi-element polluted soil[J].Environmental Pollution,2010,158(6):2282-2287 10.1016/j.envpol.2010.02.003
    [29] BEESLEY L, MARMIROLI M.The immobilisation and retention of soluble arsenic, cadmium and zinc by biochar[J].Environmental Pollution,2011,159(2):474-480 10.1016/j.envpol.2010.10.016
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  2096
  • HTML全文浏览数:  1818
  • PDF下载数:  213
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-07-26

6种低分子有机酸对针铁矿、蒙脱石和生物炭中结合态Cd活化效果的对比

  • 1. 暨南大学环境学院，广州 510632
  • 2. 广东省环境污染控制与修复材料中心，广州 510632
基金项目:

国家自然科学基金资助项目（41673094）

广东省科技计划项目(2016A020221015，2017A010105005)

摘要: 选择3种常用的土壤重金属稳定介质针铁矿、蒙脱石和生物炭，首先通过吸附实验使其对Cd达到吸附平衡（8、16和4 h），并通过氯化镁洗脱获得稳定结合的Cd（2.52、0.93和1.04 mg·g-1）。随后分别用柠檬酸、苹果酸、马来酸、酒石酸、草酸、琥珀酸6种常见的植物根际低分子有机酸进行结合态Cd活化实验，测定活化率和活化量，对比活化效果。结果表明，6种低分子有机酸对针铁矿、蒙脱石、生物炭中结合态Cd的活化效果随浓度的增加而增加，其中柠檬酸的活化作用最大，其次为草酸，其余4种酸的活化效果差异不显著。柠檬酸随浓度增加，其对Cd活化率的线性增长率最高，在针铁矿、蒙脱石、生物炭中分别为1.74%、4.71%、2.12%。在250 μmol·L-1时，柠檬酸对针铁矿、蒙脱石、生物炭3种材料中Cd的活化率分别达到4.2%、11.0%、5.6%。对比研究表明，针铁矿吸附Cd效率高且稳定，蒙脱石吸附Cd效率低且易于被低分子有机酸活化。

English Abstract

参考文献 (29)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心