南四湖含菲表层沉积物对镉吸附影响的研究
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摘要
研究南四湖含菲表层沉积物对镉吸附的影响,可为复合污染的机理研究及预防控制措施的确立提供参考依据。文章以南四湖表层沉积物为吸附剂,分别选取镉、菲为重金属、多环芳烃有机物的代表,测定水样中镉的含量,通过建立南四湖表层沉积物对镉的吸附动力学曲线、吸附等温线,分析菲存在与否的情况下南四湖表层沉积物对镉的吸附影响。结果表明:菲存在时沉积物对镉的吸附作用会减弱,有、无菲条件下吸附比例分别为71.65%、76.39%;等温及等沉积物量的状态下,沉积物对镉的吸附效果会随镉离子浓度的增加而增强;镉离子浓度一定的状态下,沉积物对镉的吸附效果会随沉积物量的增加而增强,但会减少单位吸附量;随着p H值的增加,沉积物吸附镉的量逐渐增多,但是温度的升高会使沉积物对镉的吸附效果逐渐减弱。
The phenanthrene in the surface sediment of Nansi Lake will affect the adsorption function of cadmium.This study can provide theoretical basis for the prevention and control of water pollution in Nansi Lake basin. This paper takes the surface sediments of Nansi Lake as adsorbent,and takes cadmium as the representative heavy metals and the phenanthrene as the representative polycyclic aromatic hydrocarbon organics,the influence of the adsorption of cadmium on the surface sediments of Nansi Lake is analyzed by establishing the adsorption kinetics curve and adsorption isotherm of cadmium on the surface sediments. The results show that the adsorption of cadmium by sediments in the presence of phenanthrene would be weaken and the desorption capacity would be enhanced. Under the condition of isothermal and equal amount of sediment,the adsorption effect of sediment on cadmium will be enhanced with the increase of cadmium ion concentration. When the concentration of cadmium ions is certain,the adsorption effect of sediment on cadmium will be enhanced with the increase of sediment quantity,but it will reduce the unit adsorption. With the increase of pH value,the amount of cadmium adsorbed by sediments gradually increased,but the adsorption effect of cadmium by sediments gradually decreased with the increase of temperature.
The phenanthrene in the surface sediment of Nansi Lake will affect the adsorption function of cadmium.This study can provide theoretical basis for the prevention and control of water pollution in Nansi Lake basin. This paper takes the surface sediments of Nansi Lake as adsorbent,and takes cadmium as the representative heavy metals and the phenanthrene as the representative polycyclic aromatic hydrocarbon organics,the influence of the adsorption of cadmium on the surface sediments of Nansi Lake is analyzed by establishing the adsorption kinetics curve and adsorption isotherm of cadmium on the surface sediments. The results show that the adsorption of cadmium by sediments in the presence of phenanthrene would be weaken and the desorption capacity would be enhanced. Under the condition of isothermal and equal amount of sediment,the adsorption effect of sediment on cadmium will be enhanced with the increase of cadmium ion concentration. When the concentration of cadmium ions is certain,the adsorption effect of sediment on cadmium will be enhanced with the increase of sediment quantity,but it will reduce the unit adsorption. With the increase of pH value,the amount of cadmium adsorbed by sediments gradually increased,but the adsorption effect of cadmium by sediments gradually decreased with the increase of temperature.
引文
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[11]周守勇,薛爱莲,张艳,等.聚丙烯酸改性凹土对Pb2+、Ni2+和Cr3+的选择性吸附[J].化工学报,2015,66(2):139-146.
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[15]陈苗苗,徐明岗,周世伟,等.不同磷酸盐对污染土壤中镉生物有效性的影响[J].农业环境科学学报,2011,30(2):255-262.
[16]杜斌,赵秀兰.紫色水稻土对镉吸附解吸特性的研究[J].安徽农业科学,2012,40(14):8139-8142.
[17] Li Y X,Xiang L,Tian P. Desorption characteristics of total phosphorus and heavy metalsfrom impervious urban surface sediments[J].Science Bulletin,2013,58(27):3357-3360.
[18]杨洪美,张桂斋,李小明.南四湖表层沉积物中N的形态及其分布特征[J].山东大学学报(理学版),2012,47(3):14-26.
[19] Mudhoo A,Garg V K,Wang S. Heavy metals:toxicity and removal by biosorption[M]. Dordrecht:Springer,2012.
[20]陈娟娟,葛成凤,姬泓巍,等.长江口邻近海域沉积物对磷的吸附作用初步研究[J].中国海洋大学学报(自然科学版),2015,45(3):79-86.
[21]王金贵,吕家珑,李宗仁.镉在土壤中吸附的能量特征和解吸滞后效应研究[J].安徽农业科学,2013,25:10290-10293.
[22]宗良纲,徐晓炎.土壤中镉的吸附解吸研究进展[J].生态环境,2003,12(3):331-335.
[23] Benjamin J. Multiple-site adsorption of Cd,Cu,Zn,and Pb on amorphous iron oxyhydroxide[J]. Journalof Colloid and Interface Science,1981,79:209-221.
[24] Mc Laren R G,Swift R S,Williams J G.The adsorption of copper by soil materials at low equilibrium solution concentrations[J].Journal of Soil Science,1981,3(3):247-256.
[25]刘佳.重金属汞在中国两种典型土壤中的吸附解吸特性研究[D].济南:山东大学,2008.
[26]王艳,唐晓武,刘晶晶,等.黄土对锰离子的吸附特性及机理研究[J].岩土工程学报,2012,34(12):2292-2298.
[27] Esfandbod M,Forghani A,Adhami E,et al. The role of CEC and p H in Cd retention from soils of north of Iran[J]. Soil&Sediment Contamination,2011,20(8):908-920.
[28]庄云龙,张沪春.重金属在淀山湖沉积物上的吸附研究[J].安全与环境学报,2003,3(1):37-39.
[29]任会学,姜佳慧,高志敏,等.非金属矿物改性及吸附重金属离子的研究进展[J].山东建筑大学学报,2014,29(5):448-456.
[2]韩桂琪,王彬,徐卫红,等.重金属Cd、Zn、Cu和Pb复合污染对土壤生物活性的影响[J].中国生态农业学报,2012,20(9):1236-1242.
[3]张志斌,周光军,魏垒垒,等.主要理化因子对南四湖底泥磷释放的影响[J].山东建筑大学学报,2010,25(6):637-641.
[4]刘良,张祖陆.南四湖表层沉积物重金属的空间分布、来源及污染评价[J].水生态学杂志,2013(6):7-15.
[5]刘恩峰,沈吉,杨丽原,等.南四湖及主要入湖河流表层沉积物重金属形态组成及污染研究[J].环境科学,2007,28(6):1377-1383.
[6]周东美,王慎强,陈怀满.土壤中有机污染物—重金属复合污染的交互作用[J].土壤与环境,2000,9(2):143-145.
[7]王恒.吉林省土壤—水稻系统环境质量分析评估及重金属复合污染研究[D].长春:中国科学院大学,2014.
[8]闫帅成,张克峰,刘雷,等.土壤中镉的形态及其影响因素研究进展[J].中国人口·资源与环境,2016,26(11):354-358.
[9]曾凡凡,曾光明,牛秋雅,等.菲对湘江沉积物吸附镉的影响[J].环境科学研究,2009,22(11):1294-1298.
[10]洪晓青.基于沉积物吸附与植物吸收特性的重金属污染修复机理实验研究[D].合肥:合肥工业大学,2012.
[11]周守勇,薛爱莲,张艳,等.聚丙烯酸改性凹土对Pb2+、Ni2+和Cr3+的选择性吸附[J].化工学报,2015,66(2):139-146.
[12] Mclaren V. Study on soil copper. 2. The specific adsorption of copper by soils[J].Journal of Soil Science,1973,24:443-452.
[13] Sawhney L. Selective sorption and fixation of canons by clay mineral[J].Clays and Clay Minerals,1972,20:93-100.
[14]郭观林,周启星.镉在黑土和棕壤中吸附行为比较研究[J].应用生态学报,2005,16(12):2403-2408.
[15]陈苗苗,徐明岗,周世伟,等.不同磷酸盐对污染土壤中镉生物有效性的影响[J].农业环境科学学报,2011,30(2):255-262.
[16]杜斌,赵秀兰.紫色水稻土对镉吸附解吸特性的研究[J].安徽农业科学,2012,40(14):8139-8142.
[17] Li Y X,Xiang L,Tian P. Desorption characteristics of total phosphorus and heavy metalsfrom impervious urban surface sediments[J].Science Bulletin,2013,58(27):3357-3360.
[18]杨洪美,张桂斋,李小明.南四湖表层沉积物中N的形态及其分布特征[J].山东大学学报(理学版),2012,47(3):14-26.
[19] Mudhoo A,Garg V K,Wang S. Heavy metals:toxicity and removal by biosorption[M]. Dordrecht:Springer,2012.
[20]陈娟娟,葛成凤,姬泓巍,等.长江口邻近海域沉积物对磷的吸附作用初步研究[J].中国海洋大学学报(自然科学版),2015,45(3):79-86.
[21]王金贵,吕家珑,李宗仁.镉在土壤中吸附的能量特征和解吸滞后效应研究[J].安徽农业科学,2013,25:10290-10293.
[22]宗良纲,徐晓炎.土壤中镉的吸附解吸研究进展[J].生态环境,2003,12(3):331-335.
[23] Benjamin J. Multiple-site adsorption of Cd,Cu,Zn,and Pb on amorphous iron oxyhydroxide[J]. Journalof Colloid and Interface Science,1981,79:209-221.
[24] Mc Laren R G,Swift R S,Williams J G.The adsorption of copper by soil materials at low equilibrium solution concentrations[J].Journal of Soil Science,1981,3(3):247-256.
[25]刘佳.重金属汞在中国两种典型土壤中的吸附解吸特性研究[D].济南:山东大学,2008.
[26]王艳,唐晓武,刘晶晶,等.黄土对锰离子的吸附特性及机理研究[J].岩土工程学报,2012,34(12):2292-2298.
[27] Esfandbod M,Forghani A,Adhami E,et al. The role of CEC and p H in Cd retention from soils of north of Iran[J]. Soil&Sediment Contamination,2011,20(8):908-920.
[28]庄云龙,张沪春.重金属在淀山湖沉积物上的吸附研究[J].安全与环境学报,2003,3(1):37-39.
[29]任会学,姜佳慧,高志敏,等.非金属矿物改性及吸附重金属离子的研究进展[J].山东建筑大学学报,2014,29(5):448-456.