3种不同类型土壤对Cr(Ⅵ)的吸附特性
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摘要
为了解Cr(Ⅵ)在土壤中的迁移转化规律,探明Cr(Ⅵ)在土壤中的吸附行为,采用室内振荡平衡法,以褐土、潮土以及黄绵土为研究对象,研究振荡时间、温度对土壤吸附Cr(Ⅵ)的影响。结果表明:(1)不同类型、不同层次土壤对Cr(Ⅵ)的吸附平衡时间和吸附量不同。3种供试土壤的振荡平衡时间顺序依次为黄绵土>潮土>褐土;在吸附平衡24 h时,3种供试土壤的吸附量顺序依次为潮土>褐土>黄绵土;(2)随着温度的升高,吸附量逐渐下降,不同类型的土壤下降速度不一样。3种供试土壤对Cr(VI)的吸附量下降速度的顺序为潮土>黄绵土>褐土;(3)3种供试土壤吸附Cr(Ⅵ)的等温线均符合Freundlich方程和Langmuir方程,但Freundlich方程的拟合效果更好;(4)3种供试土壤的吸附都是非自发的(ΔG>0),且放热(ΔH<0)的化学吸附过程。
To understand the regulation of migration and conversion of Cr(Ⅵ) in soil, and investigate the adsorption of Cr(Ⅵ) in soil, the oscillation balance method was used to study the effect of oscillation time and temperature on Cr(Ⅵ) adsorption of cinnamon soil, fluvo-aquic soil and loess soil. The results showed that(1) the adsorption equilibrium time and adsorption capacity of Cr(Ⅵ) in different soil types and depths were different, the order of oscillation equilibrium time of the tested soil was loess soil > fluvo-aquic soil >cinnamon soil; for 24 h adsorption equilibrium, the adsorption of the tested soil was fluvo-aquic soil >cinnamon soil > loess soil;(2) as temperature increased, the amount of adsorption gradually decreased, and the rate of decline was different; the decreasing order of the adsorption rate of Cr(Ⅵ) was fluvo-aquic soil > loess soil > cinnamon soil;(3) the isotherms of Cr(Ⅵ) adsorbed by the three soil types were consistent with the Freundlich equation and the Langmuir equation, and the Freundlih equation was better;(4) the adsorption of the tested soil was non-spontaneous(ΔG>0) and exothermic(ΔH<0) chemisorption process.
To understand the regulation of migration and conversion of Cr(Ⅵ) in soil, and investigate the adsorption of Cr(Ⅵ) in soil, the oscillation balance method was used to study the effect of oscillation time and temperature on Cr(Ⅵ) adsorption of cinnamon soil, fluvo-aquic soil and loess soil. The results showed that(1) the adsorption equilibrium time and adsorption capacity of Cr(Ⅵ) in different soil types and depths were different, the order of oscillation equilibrium time of the tested soil was loess soil > fluvo-aquic soil >cinnamon soil; for 24 h adsorption equilibrium, the adsorption of the tested soil was fluvo-aquic soil >cinnamon soil > loess soil;(2) as temperature increased, the amount of adsorption gradually decreased, and the rate of decline was different; the decreasing order of the adsorption rate of Cr(Ⅵ) was fluvo-aquic soil > loess soil > cinnamon soil;(3) the isotherms of Cr(Ⅵ) adsorbed by the three soil types were consistent with the Freundlich equation and the Langmuir equation, and the Freundlih equation was better;(4) the adsorption of the tested soil was non-spontaneous(ΔG>0) and exothermic(ΔH<0) chemisorption process.
引文
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[18]缪鑫,李兆君,龙健,等.不同类型土壤对汞和砷的吸附解吸特征研究[J].核农学报,2012,26(3):552-557.
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[20]胡小娜,南忠仁,王胜利,等.干旱区绿洲灌漠土Cu、Zn和Pb的吸附解吸特征[J].生态环境,2009,18(6):2183-2188.
[21]余国营,吴燕玉.土壤环境中重金属元素的相互作用及其对吸持特性的影响[J].环境化学,1997,16(1):30-36.
[22]景丽洁,王敏.不同类型土壤对重金属的吸附特性[J].生态环境,2008,17(1):245-248.
[23]Han H W,Ling Z M,Zhou T Y,et al.Copper(II)binding of NAD(P)H-flavin oxidoreductase(NfoR)enhances its Cr(VI)-reducing ability[J].Sci Rep,2017,7(1):15481.
[24]朱月珍.影响土壤中铬迁移转化的几个因素[J].土壤学报,1985,22(4):390-393.
[25]陈英旭,朱荫湄,袁可能,等.土壤中铬的化学行为研究Ⅱ.土壤对Cr(Ⅵ)吸附和还原动力学[J].环境科学学报,1989,9(2):137-143.
[26]朱月珍.土壤中六价铬的吸附与还原[J].环境化学,1982(5):359-364.
[27]傅臣家,刘洪禄,吴文勇,等.六价铬在土壤中吸持和迁移的试验研究[J].灌溉排水学报,2008,27(2):13-42.
[28]张亚丽,沈其荣,王兴兵,等.猪粪和稻草对铬污染黄泥土生物活性的影响[J].植物营养与肥料学报,2002,8(4):488-492.
[29]李桂菊.铬在植物及土壤中的迁移与转化[J].中国皮革,2004,33(5):30-31.
[30]宋娇艳,袁林,杨志丹,等.铁锰复合氧化物对铅离子的吸附特征及影响因素研究[J].西南大学学报:自然科学版,2014,36(7):135-142.
[31]梁化学,王益权,石宗琳,等.不同形态氧化铁对黄土性土壤吸附铅的影响[J].干旱地区农业研究,2017,35(1):64-70.
[32]Amar R W,Kenneth J L,Alan T S,et al.Influence of oxygenation on chromium redox reactions with manganese sulfide(MnS(s))[J].Environ Sci Technol,2015,49(6):3523-31.
[33]吴敦敖,鲁文毓.土壤对铬的吸附作用研究[J].上海环境科学,1991,10(2):19-23
[34]王果.Cu,Cd在2种土壤上的吸附特征[J].福建农业大学学报:自然科学版,1995,24(4):436-441.
[35]陈锋.土壤中重金属铬吸附机制研究[J].北华航天工业学院学报,2016,26(1):30-32.
[36]杜佳鑫,白英花,任晓莉,等.温度对土壤吸附铜的影响[J].大连民族学院学报,2011,13(5):536-537.
[37]陈冉.粉粘土中Cr(Ⅵ)的吸附特性及水溶性有机质对铬吸附和形态的影响[D].上海:华东师范大学,2016.
[38]Tsz-Him S,Anthoy M,Vinci K C Lee,et al.Kinetics of zinc ions removal from effluents using ion exchange resin[J].Chemical Engineering Journal,2009,146(1):63-70.
[39]Fethiye G,Erol P.Removal of chromium(III)from aqueous solutions using Lewatit S 100:the effect of p H,time,metal concentration and temperature[J].J Hazard Mater,2006,136(2):330-337.
[40]陈健,罗伟亮,李晗.有机胺吸收二氧化碳的热力学和动力学研究进展[J].化工学报,2014,65(1):12-21.
[41]吴敦敖,鲁文毓.铬在土壤-地下水系统中的污染研究[J].环境科学学报,1991,11(3):276-283.
[42]毛振强.N235萃淋树脂吸附盐酸的热力学和动力学[J].湿法冶金,2017,36(1):28-32.
[43]宋秀玲,钱会,刘小丽,等.离子交换树脂吸附铬(Ⅵ)的热力学和动力学研究[J].应用化工,2013,42(1):99-101.
[44]唐嘉英,李鑫,应汉杰.离子交换树脂吸附TP5的热力学和动力学研究[J].南京工业大学学报:自然科学版,2006,28(5):79-83.
[2]Hugo P.Van Landeghem,Rapha?le Danoix,Mohamed Gouné,et al.Contribution of Local Analysis Techniques for the Characterization of Iron and Alloying Elements in Nitrides:Consequences on the Precipitation Process in Fe(-)Si and Fe(-)Cr Nitrided Alloys[J].Materials(Basel),2018,11(8).
[3]张子栋.六价铬毒性作用及其影响因素[J].生物技术世界,2013(8):71-71.
[4]刘婉,李泽琴.水中铬污染治理的研究进展[J].广东微量元素科学,2007,14(9):5-9.
[5]谢文强.六价铬对人体急性与慢性危害探究[J].资源节约与环保,2016(07):131,135.
[6]江长楠,朱宗强,朱义年,等.桉树遗态Fe/C复合材料对水中Cr(Ⅵ)的动态吸附-解吸附特性研究[J].农业环境科学学报,2018,37(8):1767-1774.
[7]戴宇.土壤-植物系统中铬的环境行为及其毒性评价[J].环境科学,2009,30(11):3432-3440.
[8]徐佳全.燃煤中有害元素铬在水体环境中的迁移转化规律[J].中国矿业大学学报,1994,23(1):53-59.
[9]张志红,赵成刚,李涛.污染物在土壤、地下水及粘土层中迁移转化规律研究[J].水土保持学报,2005,19(1):176-180.
[10]李世业,成杰民.化工厂遗留地铬污染土壤化学淋洗修复研究[J].土壤学报,2015,52(4):869-878.
[11]黄益宗,郝晓伟,雷鸣,等.重金属污染土壤修复技术及其修复实践[J].农业环境科学学报,2013,32(03):409-417.
[12]胡婧琳,林雅洁,朱钢.地下环境中铬迁移转化机制及修复技术综述[J].环境工程,2016,34(S1):1053-1056.
[13]赵光辉,常文越,陈晓东,等.典型场地铬(Ⅵ)迁移路径分析及耐铬植物初步筛选[J].环境保护科学,2011,37(3):40-43.
[14]陈丽蓉,陈小罗,严志辉,等.土壤中重金属污染物铬的迁移转化及治理[J].科技咨询导报,2011,(33):122-123.
[15]刘云惠,魏显有,王秀敏,等.土壤中铬的吸附与形态提取研究[J].河北农业大学学报,2000,23(1):16-20.
[16]尹华,王锋,刘文.重金属铬在水环境中的迁移转化规律及其污染防治措施[J].农业与技术,2010,30(5):47-49.
[17]王珑,马耀光.灌溉条件下铬在黄土层中迁移机制的研究[J].干旱地区农业研究,2013,31(1):122-126.
[18]缪鑫,李兆君,龙健,等.不同类型土壤对汞和砷的吸附解吸特征研究[J].核农学报,2012,26(3):552-557.
[19]陈英旭,骆永明,朱永官,等.土壤对Cr_吸附和还原动力学[J].环境科学学报,1989,9(2).
[20]胡小娜,南忠仁,王胜利,等.干旱区绿洲灌漠土Cu、Zn和Pb的吸附解吸特征[J].生态环境,2009,18(6):2183-2188.
[21]余国营,吴燕玉.土壤环境中重金属元素的相互作用及其对吸持特性的影响[J].环境化学,1997,16(1):30-36.
[22]景丽洁,王敏.不同类型土壤对重金属的吸附特性[J].生态环境,2008,17(1):245-248.
[23]Han H W,Ling Z M,Zhou T Y,et al.Copper(II)binding of NAD(P)H-flavin oxidoreductase(NfoR)enhances its Cr(VI)-reducing ability[J].Sci Rep,2017,7(1):15481.
[24]朱月珍.影响土壤中铬迁移转化的几个因素[J].土壤学报,1985,22(4):390-393.
[25]陈英旭,朱荫湄,袁可能,等.土壤中铬的化学行为研究Ⅱ.土壤对Cr(Ⅵ)吸附和还原动力学[J].环境科学学报,1989,9(2):137-143.
[26]朱月珍.土壤中六价铬的吸附与还原[J].环境化学,1982(5):359-364.
[27]傅臣家,刘洪禄,吴文勇,等.六价铬在土壤中吸持和迁移的试验研究[J].灌溉排水学报,2008,27(2):13-42.
[28]张亚丽,沈其荣,王兴兵,等.猪粪和稻草对铬污染黄泥土生物活性的影响[J].植物营养与肥料学报,2002,8(4):488-492.
[29]李桂菊.铬在植物及土壤中的迁移与转化[J].中国皮革,2004,33(5):30-31.
[30]宋娇艳,袁林,杨志丹,等.铁锰复合氧化物对铅离子的吸附特征及影响因素研究[J].西南大学学报:自然科学版,2014,36(7):135-142.
[31]梁化学,王益权,石宗琳,等.不同形态氧化铁对黄土性土壤吸附铅的影响[J].干旱地区农业研究,2017,35(1):64-70.
[32]Amar R W,Kenneth J L,Alan T S,et al.Influence of oxygenation on chromium redox reactions with manganese sulfide(MnS(s))[J].Environ Sci Technol,2015,49(6):3523-31.
[33]吴敦敖,鲁文毓.土壤对铬的吸附作用研究[J].上海环境科学,1991,10(2):19-23
[34]王果.Cu,Cd在2种土壤上的吸附特征[J].福建农业大学学报:自然科学版,1995,24(4):436-441.
[35]陈锋.土壤中重金属铬吸附机制研究[J].北华航天工业学院学报,2016,26(1):30-32.
[36]杜佳鑫,白英花,任晓莉,等.温度对土壤吸附铜的影响[J].大连民族学院学报,2011,13(5):536-537.
[37]陈冉.粉粘土中Cr(Ⅵ)的吸附特性及水溶性有机质对铬吸附和形态的影响[D].上海:华东师范大学,2016.
[38]Tsz-Him S,Anthoy M,Vinci K C Lee,et al.Kinetics of zinc ions removal from effluents using ion exchange resin[J].Chemical Engineering Journal,2009,146(1):63-70.
[39]Fethiye G,Erol P.Removal of chromium(III)from aqueous solutions using Lewatit S 100:the effect of p H,time,metal concentration and temperature[J].J Hazard Mater,2006,136(2):330-337.
[40]陈健,罗伟亮,李晗.有机胺吸收二氧化碳的热力学和动力学研究进展[J].化工学报,2014,65(1):12-21.
[41]吴敦敖,鲁文毓.铬在土壤-地下水系统中的污染研究[J].环境科学学报,1991,11(3):276-283.
[42]毛振强.N235萃淋树脂吸附盐酸的热力学和动力学[J].湿法冶金,2017,36(1):28-32.
[43]宋秀玲,钱会,刘小丽,等.离子交换树脂吸附铬(Ⅵ)的热力学和动力学研究[J].应用化工,2013,42(1):99-101.
[44]唐嘉英,李鑫,应汉杰.离子交换树脂吸附TP5的热力学和动力学研究[J].南京工业大学学报:自然科学版,2006,28(5):79-83.