羟基磷灰石、骨炭对Pb~(2+)、Cd~(2+)吸附性能的差异研究
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摘要
通过间歇试验研究了羟基磷灰石(HAP)和骨炭(BC)对Pb~(2+)和Cd~(2+)吸附-解吸特性的差异,并借助红外光谱技术(FTIR)研究了HAP和BC对Pb~(2+)、Cd~(2+)吸附机制上的差异。结果表明,HAP和BC对Pb~(2+)和Cd~(2+)的吸附过程与Henry型和Freundlich型等温方程均具有较好拟合性,且BC对Pb~(2+)的吸附固定能力及吸附速率均明显高于HAP,而HAP对Cd~(2+)的吸附固定能力及吸附速率高于BC。
It was investigated about the different characteristics of Pb~(2+) or Cd~(2+)adsorption or desorption onto hydroxyapatite(HAP) and bone charcoal(BC) through batch experiment,furtherly,FTIR were used to explore the mechanisms underlying that.The results revealed that the adsorption of Pb~(2+)and Cd~(2+)onto HAP and BC fitted well with both Henry and Freundlich isotherm model,BC had much higher efficiency to remove Pb~(2+)from aqueous solution compared with HAP,besides,the Pb~(2+)could be more quickly adsorbed onto BC than that onto HAP. But it was opposite for the Cd~(2+)adsorption with the much higher removal efficiency and adsorption rate being found on HAP.
It was investigated about the different characteristics of Pb~(2+) or Cd~(2+)adsorption or desorption onto hydroxyapatite(HAP) and bone charcoal(BC) through batch experiment,furtherly,FTIR were used to explore the mechanisms underlying that.The results revealed that the adsorption of Pb~(2+)and Cd~(2+)onto HAP and BC fitted well with both Henry and Freundlich isotherm model,BC had much higher efficiency to remove Pb~(2+)from aqueous solution compared with HAP,besides,the Pb~(2+)could be more quickly adsorbed onto BC than that onto HAP. But it was opposite for the Cd~(2+)adsorption with the much higher removal efficiency and adsorption rate being found on HAP.
引文
[1]黄雁飞,陈桂芬,熊柳梅,等.耕地土壤重金属污染现状及植物修复的应用[J].安徽农业科学,2015,43(26):88-89.
[2]罗锡文.对加速我国农业机械化发展的思考[J].农业工程,2011,1(4):1-8.
[3]马荣艳.外源铅在土壤中的化学行为及其对小白菜的生物效应研究[D].合肥:安徽农业大学,2007.
[4]蔡美芳,李开明,谢丹平,等.我国耕地土壤重金属污染现状及防治对策研究[J].环境科学与技术,2014,37(12):223-230.
[5]尹肃,冯成洪,李扬飏,等.长江口沉积物重金属赋存形态及风险特征[J].环境科学,2016,37(3):917-924.
[6]张婧,王淑秋,谢琰,等.辽河水系表层沉积物中重金属分布及污染特征研究[J].环境科学,2008,29(9):2413-2418.
[7]陈春霄,姜霞,战玉柱,等.太湖表层沉积物中重金属形态分布及其潜在生态风险分析[J].中国环境科学,2011,31(11):1842-1848.
[8]刘春早,黄益宗,雷鸣,等.湘江流域土壤重金属污染及其生态环境风险评价[J].环境科学,2012,33(1):261-265.
[9]刘春早,黄益宗,雷鸣,等.重金属污染评价方法(TCLP)评价资江流域土壤重金属生态风险[J].环境化学,2011,30(9):1582-1589.
[10]金娜,印万忠.铅的危害及国内外除铅的研究现状[J].有色矿冶,2006(S1):114-115.
[11]王凯荣,张格丽.农田土壤镉污染及其治理研究进展[J].作物研究,2006(4):359-361.
[12]VIRKUTYTE J,SILLANPAA M,LATOSTENMAA P.Electrokinetic soil remediation-critical overview[J].The Science of the Total Environment,2002,289(1-3):97-121.
[13]ZHOU D M,DENG C F,CANG L.Electrokinetic remediation of a Cu contaminated red soil by conditioning catholyte p H with different enhancing chemical reagents[J].Chemosphere,2004,56(3):265-273.
[14]曹心德,魏晓欣,代革联,等.土壤重金属复合污染及其化学钝化修复技术研究进展[J].环境工程学报,2011,7(5):1441-1453.
[15]周世伟,徐明岗.磷酸盐修复重金属污染土壤的研究进展[J].生态学报,2007,27(7):3043-3050.
[16]胥焕岩,刘羽,彭明生.碳羟磷灰石吸附水溶液中镉离子的动力学研究[J].矿物岩石,2004,24(1):108-112.
[17]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.
[18]张金利,刘大伟,杨庆.骨炭对Pb(Ⅱ)的吸附特性[J].环境工程学报,2014,5(8):1784-1790.
[19]CHEN Y N,CHAI Y L,SHU Y D.Study of arsenic(V)adsorption on bone char from aqueous solution[J].J Hazard Mater,2008,160(1):168-172.
[2]罗锡文.对加速我国农业机械化发展的思考[J].农业工程,2011,1(4):1-8.
[3]马荣艳.外源铅在土壤中的化学行为及其对小白菜的生物效应研究[D].合肥:安徽农业大学,2007.
[4]蔡美芳,李开明,谢丹平,等.我国耕地土壤重金属污染现状及防治对策研究[J].环境科学与技术,2014,37(12):223-230.
[5]尹肃,冯成洪,李扬飏,等.长江口沉积物重金属赋存形态及风险特征[J].环境科学,2016,37(3):917-924.
[6]张婧,王淑秋,谢琰,等.辽河水系表层沉积物中重金属分布及污染特征研究[J].环境科学,2008,29(9):2413-2418.
[7]陈春霄,姜霞,战玉柱,等.太湖表层沉积物中重金属形态分布及其潜在生态风险分析[J].中国环境科学,2011,31(11):1842-1848.
[8]刘春早,黄益宗,雷鸣,等.湘江流域土壤重金属污染及其生态环境风险评价[J].环境科学,2012,33(1):261-265.
[9]刘春早,黄益宗,雷鸣,等.重金属污染评价方法(TCLP)评价资江流域土壤重金属生态风险[J].环境化学,2011,30(9):1582-1589.
[10]金娜,印万忠.铅的危害及国内外除铅的研究现状[J].有色矿冶,2006(S1):114-115.
[11]王凯荣,张格丽.农田土壤镉污染及其治理研究进展[J].作物研究,2006(4):359-361.
[12]VIRKUTYTE J,SILLANPAA M,LATOSTENMAA P.Electrokinetic soil remediation-critical overview[J].The Science of the Total Environment,2002,289(1-3):97-121.
[13]ZHOU D M,DENG C F,CANG L.Electrokinetic remediation of a Cu contaminated red soil by conditioning catholyte p H with different enhancing chemical reagents[J].Chemosphere,2004,56(3):265-273.
[14]曹心德,魏晓欣,代革联,等.土壤重金属复合污染及其化学钝化修复技术研究进展[J].环境工程学报,2011,7(5):1441-1453.
[15]周世伟,徐明岗.磷酸盐修复重金属污染土壤的研究进展[J].生态学报,2007,27(7):3043-3050.
[16]胥焕岩,刘羽,彭明生.碳羟磷灰石吸附水溶液中镉离子的动力学研究[J].矿物岩石,2004,24(1):108-112.
[17]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.
[18]张金利,刘大伟,杨庆.骨炭对Pb(Ⅱ)的吸附特性[J].环境工程学报,2014,5(8):1784-1790.
[19]CHEN Y N,CHAI Y L,SHU Y D.Study of arsenic(V)adsorption on bone char from aqueous solution[J].J Hazard Mater,2008,160(1):168-172.