柠檬酸型超支化聚酰胺淋洗剂对重金属污染土壤的修复效果

doi:10.19491/j.issn.1001-9278.2019.05.014

中国塑料 ›› 2019, Vol. 33 ›› Issue (5): 82-88.DOI: 10.19491/j.issn.1001-9278.2019.05.014

柠檬酸型超支化聚酰胺淋洗剂对重金属污染土壤的修复效果

龚伟¹,李姣姣¹,强杰¹,李美兰¹,张倩¹,刘白玲²

1. 商洛学院
2. 中国科学院成都有机化学研究所

收稿日期:2019-01-11 修回日期:2019-01-31 出版日期:2019-05-26 发布日期:2019-06-26

Study on Effect of Citric-acid Hyperbranched Polyamide Leaching Agent on Removal of Heavy Metal From Soil

Received:2019-01-11 Revised:2019-01-31 Online:2019-05-26 Published:2019-06-26

摘要/Abstract

摘要： 以二乙醇胺为中心核，柠檬酸为共聚单体，通过熔融聚合法，成功制备了柠檬酸型超支化聚酰胺，通过核磁共振仪和红外光谱仪对其结构进行了表征，并采用振荡淋洗法研究了柠檬酸型超支化聚酰胺在不同因素影响下对重金属污染土壤Zn、Cd和Pb的淋洗效果。结果表明，柠檬酸型超支化聚酰胺对污染土壤中Zn、Cd和Pb的淋洗效果随淋洗时间的延长总体呈现增大的趋势。在使用浓度为1.0 %（质量分数，下同），且pH=3时，柠檬酸型超支化聚酰胺对Cd和Zn的去除率最高；在相同使用浓度和pH=4.5时，对Pb的去除率最高；相比于柠檬酸而言，柠檬酸型超支化聚酰胺具有更好的淋洗效果，柠檬酸型超支化聚酰胺对重金属的去除能力为Pb>Cd>Zn，且经柠檬酸型超支化聚酰胺淋洗后，土壤的基本理化性质变化相对较小。

Abstract: Citric-acid hyperbranched polyamide was successfully prepared by melt polymerization using alkanolamide as a core and citric acid as a monomer and its chemical structure was characterized by 1H-NMR and FTIR spectroscopy. The effects of citric-acid hyperbranched polyamide on the removal of Zn, Cd and Pb from soil were investigated by batch experiments. The results indicated that the removal efficiency of Zn, Cd and Pb from soil was improved with an increase of contact time. When citric-acid hyperbranched polyamide was used as a washing agent at an concentration of 1.0 wt%, the maximum removal efficiency was achieved for Cd and Zn at pH=3 and for Pb at pH=4.5. Citric-acid hyperbranched polyamide as a leaching agent exhibited a better removal effect on heavy metals compared to normal citric acid. Moreover, citric-acid hyperbranched polyamide presented the extraction efficiency on removal of target heavy metals in an order of Pb>Cd>Zn, and however it showed less effect on the basic physical-chemical properties of soil.

龚伟李姣姣强杰李美兰张倩刘白玲. 柠檬酸型超支化聚酰胺淋洗剂对重金属污染土壤的修复效果[J]. 中国塑料, 2019, 33(5): 82-88.

参考文献

[1] Wang S., Liu Y., Li X., Peng L., Xia W. Removal of heavy metals from lead-zinc mine tailings by improved electro-kinetic technique[J], Environment Protection of Chemical Industry, 2008, 28(4):331-335.
[2] Orish E., John K., Cecilia N., et al. Heavy metals health risk assessment for population via consumption of food crops and fruits in Owerri, South Eastern, Nigeria[J]. Chemistry Central Journal, 2012, 6(1): 1-7.
[3] Sun Z., Xie X., Wang P., et al. Heavy metal pollution caused by small-scale metal ore mining activities: A case study from a polymetallic mine in South China[J]. Science of the Total Environment, 2018, 639:217-227.
[4] Chen F., Yao Q., Tian J. Review of Ecological Restoration Technology for Mine Tailings in China [J], Engineering Review, 2016, 36(2):115-121.
[5] Nwachukwu M.A., Feng H., Alinnor J. Assessment of heavy metal pollution in soil and their implications within and around me-chanic villages[J]. International Journal of Environmental Science and Technology, 2010, 7(2):347-358.
[6] 李飞宇. 土壤重金属污染的生物修复技术[J]. 环境科学与技术, 2011, 34(S2):148-151.
[7] Beesley L., Inneh O.S., Norton G.J., et al. Assessing the influence of compost and biochar amendments on the mobility and toxicity of metals and arsenic in a naturally contaminated mine soil[J]. Environmental Pollution, 2014, 186:195-202.
[8] Rahman M.S., Saha N., Molla A.H. Potential ecological risk assessment of heavy metal contamination in sediment and water body around Dhaka export processing zone, Bangladesh[J]. Environmental Earth Sciences, 2014, 71(5):2293-2308.
[9] Li H., Ji H. Chemical speciation, vertical profile and human health risk assessment of heavy metals in soils from coal-mine brownfield, Beijing, China[J]. Journal of Geochemical Exploration, 2017, 183.
[10] Yao Z., Li J., Xie H., et al. Review on remediation technologies of soil contaminated by heavy metals[J]. Procedia Environmental Sciences,2012,16(4):722-729.
[11] 郑复乐, 姚荣江, 杨劲松, 等. 淋洗液对沿海滩涂设施土壤重金属的洗脱效应[J]. 中国环境科学, 2018, 38(11):4218-4227.
[12] Feng C., Zhang S., Li L., et al. Feasibility of four wastes to remove heavy metals from contaminated soils[J]. Journal of environmental management, 2018, 212:258-265.
[13] 串丽敏, 赵同科, 郑怀国, 等. 土壤重金属污染修复技术研究进展[J]. 环境科学与技术, 2014, 37(S2):213-222.
[14] Wang J., Feng X., Anderson C.W., et al. Remediation of mercury contaminated sites-A review[J]. Journal of Hazardous Materials, 2012, 221-222(1):1-18.
[15] Badawi M.A., Negm N.A., Abou Kana M.T.H., et al. Adsorption of aluminum and lead from wastewater by chitosan-tannic acid modi?ed biopolymers: isotherms, kinetics, thermodynamics and process mechanism[J]. International Journal of Biological Macromolecules, http://dx.doi.org/doi:10.1016/j.ijbiomac. 2017.03.003.
[16] Zhu G., Guo Q., Yang J., et al. Research on the effect and technique of remediation for multi-metal contaminated tailing soils[J], Environmental Science, 2013, 34(9):3690-3696.
[17] 陈欣园, 仵彦卿. 不同化学淋洗剂对复合重金属污染土壤的修复机理[J]. 环境工程学报, 2018, 12(10):2845-2854.
[18] Zhang W., Tong L., Yuan Y., et al. Influence of soil washing with a chelator on subsequent chemical immobilization of heavy metals in a contaminated soil[J]. Journal of Hazardous Materials, 2010, 178:578-587.
[19] 邓红侠, 田鹏, 丁克廉, 等. 不同淋洗剂对塿土中Cu、Pb的淋洗效果及对其他元素淋出的影响[J]. 环境化学, 2017, 36(06):1343-1352.
[20] 杜蕾. 化学淋洗与生物技术联合修复重金属污染土壤[D]. 西北大学, 2018.
[21] Beiyuan J., Tsang D.C.W., Valix M., et al. Combined application of EDDS and EDTA for removal of potentially toxic elements under multiple soil washing schemes[J]. Chemosphere, 2018, 205:178-187. DOI: 10.1016/j.chemosphere.2018.04.081.
[22] 许超, 夏北城, 林颖. 柠檬酸对中低污染土壤中重金属的淋洗动力学[J]. 生态环境学报, 2009, 18(2):507-510.
[23] 林青. 土壤中重金属离子竞争吸附的研究进展[J]. 土壤, 2008, 40(5):706-711.
[24] Ottosen L.M., Hansen H.K., Jensen P.E. Relation between pH and desorption of Cu, Cr, Zn, and Pb from industrially polluted soils[J]. Water, Air and Soil Pollution, 2009, 201:295-304.
[25] 许端平, 李晓波, 孙璐. 有机酸对土壤中Pb和Cd淋洗动力学特征及去除机理[J]. 安全与环境学报, 2015, 15(3):261-266.
[26] Huang H.H., Yao Q., Liu B.L., et al. Synthesis and characterization of scale and corrosion inhibitors with hyper-branched Structure and its mechanism[J]. New Journal of Chemistry, 2017, 41:12205-12217.
[27] 姚瑶, 张世熔, 王怡君, 等. 3种环保型淋洗剂对重金属污染土壤的淋洗效果[J]. 环境工程学报, 2018, 12(7):2039-2046.

柠檬酸型超支化聚酰胺淋洗剂对重金属污染土壤的修复效果

Study on Effect of Citric-acid Hyperbranched Polyamide Leaching Agent on Removal of Heavy Metal From Soil

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价