pH和磷的交互作用对稳定化土壤砷释放的影响
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摘要
以3种含Fe材料稳定化土壤(FeSO_4、FeS和Fe~0稳定化土壤)为研究对象,研究了不同pH和P的交互作用对As释放量的影响及其作用机理。结果表明,在pH=3条件下,随着时间的延长能够促进释放的As重新趋于稳定化,而pH=11时3种稳定化土壤中As的释放量显著增加,144 h后分别约为pH=3时的10.5、16和10倍。添加P时,在3种pH条件下都促进了稳定化土壤中As的释放,尤其在酸性条件下,相对于无P体系As的释放量增加最为明显。FeSO_4稳定化土壤中As的释放特征能用Elovich方程较好地描述,而双常数方程拟合FeS和Fe~0稳定化土壤效果更优。在pH=3条件下,3种稳定化土壤中As的释放量与Ca、Mg、Mn的溶出量呈(极)显著相关,而pH=11时FeSO_4和FeS稳定化土壤中As的释放量与SO_4~(2–)的溶出量呈(极)显著相关,表明在酸性条件下,稳定化土壤As的释放主要受Ca、Mg、Mn氧化物结合态As溶解的影响,而碱性条件下,FeSO_4和FeS稳定化土壤中As的释放可能与硫化物的溶解有关。
Soils stablished by FeSO_4,FeS and Fe~0 were chosen to study the interaction effect of pH and phosphorus on arsenic release and the mechanisms involved.The results showed that the released arsenic tended to stabilize again over time at pH 3.0,whereas increased dramatically at pH 11.0,reached 10.5,10 and 16 times of those at pH 3.0 in 144 h,respectively.Phosphorus addition promoted arsenic release from stabilized soils,especially under acidic condition.Elovich equation could describe better arsenic release from FeSO_4 stabilized soil,while power function equation fitted better from FeS and Fe~0 stabilized soils.Arsenic release was significantly correlated with dissolved Ca,Mg and Mn from soils at pH 3.0 and with SO_4~(2–) released from FeSO_4 and FeS stabilized soils at pH 11.0,which imply that arsenic release from stabilized soil is influenced mainly by dissolution of arsenic binded in Ca,Mg and Mn oxides under acidic conditions,while might relate with dissolution of sulfides in FeSO_4 and FeS stabilized soils under alkaline conditions.
Soils stablished by FeSO_4,FeS and Fe~0 were chosen to study the interaction effect of pH and phosphorus on arsenic release and the mechanisms involved.The results showed that the released arsenic tended to stabilize again over time at pH 3.0,whereas increased dramatically at pH 11.0,reached 10.5,10 and 16 times of those at pH 3.0 in 144 h,respectively.Phosphorus addition promoted arsenic release from stabilized soils,especially under acidic condition.Elovich equation could describe better arsenic release from FeSO_4 stabilized soil,while power function equation fitted better from FeS and Fe~0 stabilized soils.Arsenic release was significantly correlated with dissolved Ca,Mg and Mn from soils at pH 3.0 and with SO_4~(2–) released from FeSO_4 and FeS stabilized soils at pH 11.0,which imply that arsenic release from stabilized soil is influenced mainly by dissolution of arsenic binded in Ca,Mg and Mn oxides under acidic conditions,while might relate with dissolution of sulfides in FeSO_4 and FeS stabilized soils under alkaline conditions.
引文
[1]廖自基.微量元素的环境化学及生物效应[M].北京:中国环境科学出版社,1992
[2]Kumpiene J,Lagerkvist A,Maurice C.Stabilization of As,Cr,Cu,Pb and Zn in soil using amendments-A review[J].Waste Management,2008,28(1):215-225
[3]李士杏,骆永明,章海波,等.不同性质铁铝土对砷酸根吸附特性的比较研究[J].土壤学报2012,49(3):474-480
[4]Zeng X,Wu P,Su S,et al.Phosphate has a differential influence on arsenate adsorption by soils with different properties[J].Plant Soil&Environment,2012,58(9):405-411
[5]王小玲,马杰,顾明华,等.砷和磷在不同污染类型土壤中的竞争吸附动力学[J].生态环境学报,2015,24(4):694-699
[6]Bissen M,Frimmel F H.Arsenic-a review.Part I:Occurrence,toxicity,speciation,mobility[J].Acta Hydrochimica et Hydrobiologica,2003,31(1):9-18
[7]Jain A,And K P R,Loeppert R H.Arsenite and arsenate adsorption on ferrihydrite:Surface charge reduction and net OH-release stoichiometry[J].Environmental Science&Technology,1999,33(8):3696
[8]卢聪,李青青,罗启仕,等.场地土壤中有效态砷的稳定化处理及机理研究[J].中国环境科学,2013,33(2):298-304
[9]杨剑虹,王成林,代亨林.土壤农化分析与环境监测[M].北京:中国大地出版社,2008
[10]吕洪涛,贾永锋,闫洪,等.pH值、碱类型及预停留时间对铁砷共沉淀物长期稳定性的影响[J].生态学杂志,2008,27(9):1576-1579
[11]Masscheleyn P H,Delaune R D,Jr W H P.Effect of redox potential and pH on arsenic speciation and solubility in a contaminated soil[J].Environmental Science&Technology,1991,25(8):1414-1419
[12]罗磊,张淑贞,马义兵.土壤中砷吸附机理及其影响因素研究进展[J].土壤,2008,40(3):351-359
[13]Impellitteri C A.Effects of pH and phosphate on metal distribution with emphasis on As speciation and mobilization in soils from a lead smelting site[J].Science of The Total Environment,2005,345(1/2/3):175-190
[14]Rubinos D A,Iglesias L,Díaz-Fierros F,et al.Interacting effect of pH,phosphate and time on the release of arsenic from polluted river sediments(Anllóns River,Spain)[J].Aquatic Geochemistry,2011,17(3):281-306
[15]Qi Y,Donahoe R J.The environmental fate of arsenic in surface soil contaminated by historical herbicide application[J].Science of the Total Environment,2008,405(1/2/3):246-254
[16]吴萍萍,曾希柏,白玲玉.不同类型土壤中As(V)解吸行为的研究[J].环境科学学报,2011,31(5):1004-1010
[17]莫小荣,吴烈善,王芸,等.复合材料对砷污染土壤稳定化处理及机理研究[J].环境科学学报,2017,37(3):1115-1121
[18]吴烈善,莫小荣,曾东梅,等.复合矿化稳定剂对土壤中砷稳定效果的研究[J].土壤通报,2014,45(6):1522-1526
[19]胡立琼,曾敏,雷鸣,等.含铁材料对污染水稻土中砷的稳定化效果[J].环境工程学报,2014,8(4):1599-1604
[20]Bostick B C,Fendorf S.Arsenite sorption on troilite(FeS)and pyrite(FeS2)[J].Geochimica et Cosmochimica Acta,2003,67(5):909-921
[21]Hess R E,Blanchar R W.Arsenic stability in contaminated soils[J].Soil Sci.Soc.Am.J.(United States),1976,40(6):847-852
[22]Masue Y,Loeppert R H,Kramer T A.Arsenate and arsenite adsorption and desorption behavior on coprecipitated aluminum:Iron hydroxides[J].Environmental Science&Technology,2007,41(3):837-842
[23]Jain A,Loeppert R H.Effect of competing anions on the adsorption of arsenate and arsenite by ferrihydrite[J].Journal of Environmental Quality,2000,29(5):1422-1430
[24]Jackson B P,Miller W P.Effectiveness of phosphate and hydroxide for desorption of arsenic and selenium species from iron oxides[J].Soil Science Society of America Journal,2000,64(5):1616-1622
[25]孟顺龙,裘丽萍,陈家长,等.污水化学沉淀法除磷研究进展[J].中国农学通报,2012,28(35):264-268
[26]Cappuyns V,Swennen R.Kinetics of element release during combined oxidation and pH(stat)leaching of anoxic river sediments[J].Applied Geochemistry,2005,20(6):1169-1179
[27]Bose P,Sharma A.Role of iron in controlling speciation and mobilization of arsenic in subsurface environment[J].Water Research,2002,36(19):4916-4926
[28]李勇,徐忠敏,吕翠翠,等.碱浸预处理提高某含砷锑难处理金精矿回收率的试验研究[J].黄金,2013,34(3):61-64
[29]李世玉,刘彬,杨常亮,等.上覆水pH值和总磷浓度对含铁盐的高砷沉积物中砷迁移转化的影响[J].湖泊科学,2015,27(6):1101-1106
[30]钟松雄,尹光彩,陈志良,等.水稻土中砷的环境化学行为及铁对砷形态影响研究进展[J].土壤,2016,48(5):854-862
[2]Kumpiene J,Lagerkvist A,Maurice C.Stabilization of As,Cr,Cu,Pb and Zn in soil using amendments-A review[J].Waste Management,2008,28(1):215-225
[3]李士杏,骆永明,章海波,等.不同性质铁铝土对砷酸根吸附特性的比较研究[J].土壤学报2012,49(3):474-480
[4]Zeng X,Wu P,Su S,et al.Phosphate has a differential influence on arsenate adsorption by soils with different properties[J].Plant Soil&Environment,2012,58(9):405-411
[5]王小玲,马杰,顾明华,等.砷和磷在不同污染类型土壤中的竞争吸附动力学[J].生态环境学报,2015,24(4):694-699
[6]Bissen M,Frimmel F H.Arsenic-a review.Part I:Occurrence,toxicity,speciation,mobility[J].Acta Hydrochimica et Hydrobiologica,2003,31(1):9-18
[7]Jain A,And K P R,Loeppert R H.Arsenite and arsenate adsorption on ferrihydrite:Surface charge reduction and net OH-release stoichiometry[J].Environmental Science&Technology,1999,33(8):3696
[8]卢聪,李青青,罗启仕,等.场地土壤中有效态砷的稳定化处理及机理研究[J].中国环境科学,2013,33(2):298-304
[9]杨剑虹,王成林,代亨林.土壤农化分析与环境监测[M].北京:中国大地出版社,2008
[10]吕洪涛,贾永锋,闫洪,等.pH值、碱类型及预停留时间对铁砷共沉淀物长期稳定性的影响[J].生态学杂志,2008,27(9):1576-1579
[11]Masscheleyn P H,Delaune R D,Jr W H P.Effect of redox potential and pH on arsenic speciation and solubility in a contaminated soil[J].Environmental Science&Technology,1991,25(8):1414-1419
[12]罗磊,张淑贞,马义兵.土壤中砷吸附机理及其影响因素研究进展[J].土壤,2008,40(3):351-359
[13]Impellitteri C A.Effects of pH and phosphate on metal distribution with emphasis on As speciation and mobilization in soils from a lead smelting site[J].Science of The Total Environment,2005,345(1/2/3):175-190
[14]Rubinos D A,Iglesias L,Díaz-Fierros F,et al.Interacting effect of pH,phosphate and time on the release of arsenic from polluted river sediments(Anllóns River,Spain)[J].Aquatic Geochemistry,2011,17(3):281-306
[15]Qi Y,Donahoe R J.The environmental fate of arsenic in surface soil contaminated by historical herbicide application[J].Science of the Total Environment,2008,405(1/2/3):246-254
[16]吴萍萍,曾希柏,白玲玉.不同类型土壤中As(V)解吸行为的研究[J].环境科学学报,2011,31(5):1004-1010
[17]莫小荣,吴烈善,王芸,等.复合材料对砷污染土壤稳定化处理及机理研究[J].环境科学学报,2017,37(3):1115-1121
[18]吴烈善,莫小荣,曾东梅,等.复合矿化稳定剂对土壤中砷稳定效果的研究[J].土壤通报,2014,45(6):1522-1526
[19]胡立琼,曾敏,雷鸣,等.含铁材料对污染水稻土中砷的稳定化效果[J].环境工程学报,2014,8(4):1599-1604
[20]Bostick B C,Fendorf S.Arsenite sorption on troilite(FeS)and pyrite(FeS2)[J].Geochimica et Cosmochimica Acta,2003,67(5):909-921
[21]Hess R E,Blanchar R W.Arsenic stability in contaminated soils[J].Soil Sci.Soc.Am.J.(United States),1976,40(6):847-852
[22]Masue Y,Loeppert R H,Kramer T A.Arsenate and arsenite adsorption and desorption behavior on coprecipitated aluminum:Iron hydroxides[J].Environmental Science&Technology,2007,41(3):837-842
[23]Jain A,Loeppert R H.Effect of competing anions on the adsorption of arsenate and arsenite by ferrihydrite[J].Journal of Environmental Quality,2000,29(5):1422-1430
[24]Jackson B P,Miller W P.Effectiveness of phosphate and hydroxide for desorption of arsenic and selenium species from iron oxides[J].Soil Science Society of America Journal,2000,64(5):1616-1622
[25]孟顺龙,裘丽萍,陈家长,等.污水化学沉淀法除磷研究进展[J].中国农学通报,2012,28(35):264-268
[26]Cappuyns V,Swennen R.Kinetics of element release during combined oxidation and pH(stat)leaching of anoxic river sediments[J].Applied Geochemistry,2005,20(6):1169-1179
[27]Bose P,Sharma A.Role of iron in controlling speciation and mobilization of arsenic in subsurface environment[J].Water Research,2002,36(19):4916-4926
[28]李勇,徐忠敏,吕翠翠,等.碱浸预处理提高某含砷锑难处理金精矿回收率的试验研究[J].黄金,2013,34(3):61-64
[29]李世玉,刘彬,杨常亮,等.上覆水pH值和总磷浓度对含铁盐的高砷沉积物中砷迁移转化的影响[J].湖泊科学,2015,27(6):1101-1106
[30]钟松雄,尹光彩,陈志良,等.水稻土中砷的环境化学行为及铁对砷形态影响研究进展[J].土壤,2016,48(5):854-862