鸟粪石天然沸石复合材料对水中铅离子的去除
|
摘要
将一种含鸟粪石的氮磷回收产物(NZ-MAP)应用于水中重金属离子铅的去除.通过XRD、FTIR、SEM/EDS分析手段对NZ-MAP进行表征,并探究投加量、溶液初始pH、反应时间对去除过程的影响.结果表明NZ-MAP材料主要成分为负载有鸟粪石的天然沸石;当投加量为0. 4 g·L~(-1)时,最大吸附量为749. 74 mg·g~(-1),同时NZ-MAP对溶液中Pb~(2+)的吸附量随pH的增大呈先增加后趋于平衡的趋势,其去除机理主要为Pb_(10)(PO_4)_6(OH)_2沉淀作用,且当pH为5. 0时效果最佳.该材料对于水中铅离子的去除过程更加符合准二级动力学模型.为深入探讨共存重金属离子对NZ-MAP去除水中铅离子的影响,发现共存Ni~(2+)和Cu~(2+)对NZ-MAP吸附Pb~(2+)的影响较小,共存Zn~(2+)和Al~(3+)明显抑制了NZ-MAP对Pb~(2+)的吸附.研究显示,NZ-MAP材料可高效去除水中铅离子,可为水体中铅离子的去除提供有效的方法
A nitrogen and phosphorus recovery product( NZ-MAP) containing struvite was applied to remove heavy metal ions and lead from water. NZ-MAP was characterized using XRD,FTIR,and SEM/EDS. The effects of dosage,initial pH,and reaction time on the removal process were investigated. The results show that the main component of NZ-MAP is a natural zeolite loaded with struvite. When the dosage is 0. 4 g·L~(-1),the maximum adsorption amount is 749. 74 mg·g~(-1),and the adsorption of Pb~(2+)in the solution increases first and then tends to reach a balance with increase of the pH. Its removal mechanism is mainly Pb_(10)( PO_4)_6( OH)_2 precipitation,and the effect is best when pH is 5. 0. The removal process of Pb~(2+)from water is more in line with the quasi-two stage kinetic model. In an investigation of the effect of coexisting heavy metal ions on the removal of lead ions in water by NZ-MAP,it was found that coexisting Ni~(2+)and Cu~(2+)have little effect on NZ-MAP adsorption on Pb~(2+). Coexisting Zn~(2+)and Al~(3+)obviously inhibit the adsorption of Pb~(2+)by NZ-MAP. The research shows that NZ-MAP material can remove lead ions from water efficiently,thus offering an effective method for doing this.
A nitrogen and phosphorus recovery product( NZ-MAP) containing struvite was applied to remove heavy metal ions and lead from water. NZ-MAP was characterized using XRD,FTIR,and SEM/EDS. The effects of dosage,initial pH,and reaction time on the removal process were investigated. The results show that the main component of NZ-MAP is a natural zeolite loaded with struvite. When the dosage is 0. 4 g·L~(-1),the maximum adsorption amount is 749. 74 mg·g~(-1),and the adsorption of Pb~(2+)in the solution increases first and then tends to reach a balance with increase of the pH. Its removal mechanism is mainly Pb_(10)( PO_4)_6( OH)_2 precipitation,and the effect is best when pH is 5. 0. The removal process of Pb~(2+)from water is more in line with the quasi-two stage kinetic model. In an investigation of the effect of coexisting heavy metal ions on the removal of lead ions in water by NZ-MAP,it was found that coexisting Ni~(2+)and Cu~(2+)have little effect on NZ-MAP adsorption on Pb~(2+). Coexisting Zn~(2+)and Al~(3+)obviously inhibit the adsorption of Pb~(2+)by NZ-MAP. The research shows that NZ-MAP material can remove lead ions from water efficiently,thus offering an effective method for doing this.
引文
[1]孙伟锋,肖迪.水体重金属污染现状及治理技术[J].能源与节能,2012,(2):49-50.Sun W F,Xiao D.Status and control technology of heavy metal pollution[J].Energy and Energy Conservation,2012,(2):49-50.
[2]于晓莉,刘强.水体重金属污染及其对人体健康影响的研究[J].绿色科技,2011,(10):123-126.Yu X L,Liu Q.Research status of heavy metal pollution in waters and its effects on human health[J].Journal of Green Science and Technology,2011,(10):123-126.
[3]王小丹,铁绍龙.纳米氧化锌的性能及其在涂料中的应用[J].电镀与涂饰,2005,24(3):27-30.Wang X D,Tie S L.Performance of nano-ZnO and its applications in coatings[J].Electroplating&Finishing,2005,24(3):27-30.
[4]朱一民,王忠安,苏秀娟,等.钙基膨润土对水相中铜离子的吸附[J].东北大学学报(自然科学版),2006,27(1):99-102.Zhu Y M,Wang Z A,Su X J,et al.Adsorption of Cu2+by Cabentonite in wastewater[J].Journal of Northeastern University(Natural Science),2006,27(1):99-102.
[5]孟霞,张旭东,田燕,等.纳米材料在涂料中的应用[J].山东化工,2004,33(3):19-21.Meng X,Zhang X D,Tian Y,et al.Application of nanomaterials in coatings industry[J].Shandong Chemical Industry,2004,33(3):19-21.
[6]Afkhami A,Saber-Tehrani M,Bagheri H.Simultaneous removal of heavy-metal ions in wastewater samples using nano-alumina modified with 2,4-dinitrophenylhydrazine[J].Journal of Hazardous Materials,2010,181(1-3):836-844.
[7]钟常明,方夕辉,许振良.膜技术及其组合工艺在重金属废水中的应用[J].环境科学与技术,2008,31(8):44-48.Zhong C M,Fang X H,Xu Z L.Membrane technology and its application in heavy metal wastewater treatment[J].Environmental Science&Technology,2008,31(8):44-48.
[8]马楠,刘华波,谢鑫源.天然矿物负载Fe/Co催化H2O2氧化降解阳离子红3R[J].环境科学,2015,36(2):576-583.Ma N,Liu H B,Xie X Y.Oxidation of cationic red 3R in water with H2O2catalyzed by mineral loaded with Fe/Co[J].Environmental Science,2015,36(2):576-583.
[9]黄万联.试论电镀废水处理工艺[J].科技与企业,2012,(10):107-108.
[10]Park J H,Bolan N,Megharaj M,et al.Comparative value of phosphate sources on the immobilization of lead,and leaching of lead and phosphorus in lead contaminated soils[J].Science of the Total Environment,2011,409(4):853-860.
[11]Huang H M,Xu C L,Zhang W.Removal of nutrients from piggery wastewater using struvite precipitation and pyrogenation technology[J].Bioresource Technology,2011,102(3):2523-2528.
[12]刘羽,彭明生.磷灰石在废水治理中的应用[J].安全与环境学报,2001,1(1):9-12.Liu Y,Peng M S.Applications of mineral apatites in the treatment of waste water[J].Journal of Safety and Environment,2001,1(1):9-12.
[13]Feng Y,Gong J L,Zeng G M,et al.Adsorption of Cd(II)and Zn(II)from aqueous solutions using magnetic hydroxyapatite nanoparticles as adsorbents[J].Chemical Engineering Journal,2010,162(2):487-494.
[14]成雪君,王学江,王浩,等.载镁天然沸石复合材料对污水中氮磷的同步回收[J].环境科学,2017,38(12):5139-5145.Cheng X J,Wang X J,Wang H,et al.Simultaneous recovery of nutrients from wastewater by mesoporous Mg O-loaded natural zeolital[J].Environmental Science,2017,38(12):5139-5145.
[15]Mier M V,Callejas R L,Gehr R,et al.Heavy metal removal with mexican clinoptilolite::multi-component ionic exchange[J].Water Research,2001,35(2):373-378.
[16]Demirbas A.Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication[J].Journal of Hazardous Materials,2004,109(1-3):221-226.
[17]Ganzagh M A A,Yousefpour M,Taherian Z,et al.The removal of mercury(II)from water by Ag supported on nanomesoporous silica[J].Journal of Chemical Biology,2016,9(4):127-142.
[18]Ho Y S.Effect of pH on lead removal from water using tree fern as the sorbent[J].Bioresource Technology,2005,96(11):1292-1296.
[19]Han R P,Lu Z,Zou W H,et al.Removal of copper(II)and lead(II)from aqueous solution by manganese oxide coated sand:II.Equilibrium study and competitive adsorption[J].Journal of Hazardous Materials,2006,137(1):480-488.
[20]周莹,潘纲,陈灏.土壤原位覆盖对底泥的修复作用研究[J].环境工程学报,2011,5(11):2459-2463.Zhou Y,Pan G,Chen H.Effect of in-situ capping on contaminated sediment remediation using local soil[J].Chinese Journal of Environmental Engineering,2011,5(11):2459-2463.
[21]Hamidian A H,Atashgahi M,Khorasani N.Phytoremediation of heavy metals(Cd,Pb and V)in gas refinery wastewater using common reed(Phragmitis australis)[J].International Journal of Aquatic Biology,2014,2(1):29-35.
[22]Wang H,Wang X J,Ma J X,et al.Removal of cadmium(II)from aqueous solution:a comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrientrich wastewater[J].Journal of Hazardous Materials,2017,329:66-76.
[23]周平,黄汝常,李永辉,等.去除废水中重金属离子的新工艺研究[J].中国给水排水,2015,14(4):17-20.Zhou P,Huang R C,Li Y H,et al.Study of a novel process for removal of heavy metals from industrial wastewater[J].China Water&Wastewater,2015,14(4):17-20.
[24]蒲文斌.给水深度处理技术在城市水厂中的应用[J].建材与装饰,2017,(2):266-267.
[25]Wang H,Wang X J,Chen J,et al.Recovery of nutrients from wastewater by a Mg Cl2modified zeolite and their reuse as an amendment for Cu and Pb immobilization in soil[J].RSCAdvances,2016,6(61):55809-55818.
[2]于晓莉,刘强.水体重金属污染及其对人体健康影响的研究[J].绿色科技,2011,(10):123-126.Yu X L,Liu Q.Research status of heavy metal pollution in waters and its effects on human health[J].Journal of Green Science and Technology,2011,(10):123-126.
[3]王小丹,铁绍龙.纳米氧化锌的性能及其在涂料中的应用[J].电镀与涂饰,2005,24(3):27-30.Wang X D,Tie S L.Performance of nano-ZnO and its applications in coatings[J].Electroplating&Finishing,2005,24(3):27-30.
[4]朱一民,王忠安,苏秀娟,等.钙基膨润土对水相中铜离子的吸附[J].东北大学学报(自然科学版),2006,27(1):99-102.Zhu Y M,Wang Z A,Su X J,et al.Adsorption of Cu2+by Cabentonite in wastewater[J].Journal of Northeastern University(Natural Science),2006,27(1):99-102.
[5]孟霞,张旭东,田燕,等.纳米材料在涂料中的应用[J].山东化工,2004,33(3):19-21.Meng X,Zhang X D,Tian Y,et al.Application of nanomaterials in coatings industry[J].Shandong Chemical Industry,2004,33(3):19-21.
[6]Afkhami A,Saber-Tehrani M,Bagheri H.Simultaneous removal of heavy-metal ions in wastewater samples using nano-alumina modified with 2,4-dinitrophenylhydrazine[J].Journal of Hazardous Materials,2010,181(1-3):836-844.
[7]钟常明,方夕辉,许振良.膜技术及其组合工艺在重金属废水中的应用[J].环境科学与技术,2008,31(8):44-48.Zhong C M,Fang X H,Xu Z L.Membrane technology and its application in heavy metal wastewater treatment[J].Environmental Science&Technology,2008,31(8):44-48.
[8]马楠,刘华波,谢鑫源.天然矿物负载Fe/Co催化H2O2氧化降解阳离子红3R[J].环境科学,2015,36(2):576-583.Ma N,Liu H B,Xie X Y.Oxidation of cationic red 3R in water with H2O2catalyzed by mineral loaded with Fe/Co[J].Environmental Science,2015,36(2):576-583.
[9]黄万联.试论电镀废水处理工艺[J].科技与企业,2012,(10):107-108.
[10]Park J H,Bolan N,Megharaj M,et al.Comparative value of phosphate sources on the immobilization of lead,and leaching of lead and phosphorus in lead contaminated soils[J].Science of the Total Environment,2011,409(4):853-860.
[11]Huang H M,Xu C L,Zhang W.Removal of nutrients from piggery wastewater using struvite precipitation and pyrogenation technology[J].Bioresource Technology,2011,102(3):2523-2528.
[12]刘羽,彭明生.磷灰石在废水治理中的应用[J].安全与环境学报,2001,1(1):9-12.Liu Y,Peng M S.Applications of mineral apatites in the treatment of waste water[J].Journal of Safety and Environment,2001,1(1):9-12.
[13]Feng Y,Gong J L,Zeng G M,et al.Adsorption of Cd(II)and Zn(II)from aqueous solutions using magnetic hydroxyapatite nanoparticles as adsorbents[J].Chemical Engineering Journal,2010,162(2):487-494.
[14]成雪君,王学江,王浩,等.载镁天然沸石复合材料对污水中氮磷的同步回收[J].环境科学,2017,38(12):5139-5145.Cheng X J,Wang X J,Wang H,et al.Simultaneous recovery of nutrients from wastewater by mesoporous Mg O-loaded natural zeolital[J].Environmental Science,2017,38(12):5139-5145.
[15]Mier M V,Callejas R L,Gehr R,et al.Heavy metal removal with mexican clinoptilolite::multi-component ionic exchange[J].Water Research,2001,35(2):373-378.
[16]Demirbas A.Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication[J].Journal of Hazardous Materials,2004,109(1-3):221-226.
[17]Ganzagh M A A,Yousefpour M,Taherian Z,et al.The removal of mercury(II)from water by Ag supported on nanomesoporous silica[J].Journal of Chemical Biology,2016,9(4):127-142.
[18]Ho Y S.Effect of pH on lead removal from water using tree fern as the sorbent[J].Bioresource Technology,2005,96(11):1292-1296.
[19]Han R P,Lu Z,Zou W H,et al.Removal of copper(II)and lead(II)from aqueous solution by manganese oxide coated sand:II.Equilibrium study and competitive adsorption[J].Journal of Hazardous Materials,2006,137(1):480-488.
[20]周莹,潘纲,陈灏.土壤原位覆盖对底泥的修复作用研究[J].环境工程学报,2011,5(11):2459-2463.Zhou Y,Pan G,Chen H.Effect of in-situ capping on contaminated sediment remediation using local soil[J].Chinese Journal of Environmental Engineering,2011,5(11):2459-2463.
[21]Hamidian A H,Atashgahi M,Khorasani N.Phytoremediation of heavy metals(Cd,Pb and V)in gas refinery wastewater using common reed(Phragmitis australis)[J].International Journal of Aquatic Biology,2014,2(1):29-35.
[22]Wang H,Wang X J,Ma J X,et al.Removal of cadmium(II)from aqueous solution:a comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrientrich wastewater[J].Journal of Hazardous Materials,2017,329:66-76.
[23]周平,黄汝常,李永辉,等.去除废水中重金属离子的新工艺研究[J].中国给水排水,2015,14(4):17-20.Zhou P,Huang R C,Li Y H,et al.Study of a novel process for removal of heavy metals from industrial wastewater[J].China Water&Wastewater,2015,14(4):17-20.
[24]蒲文斌.给水深度处理技术在城市水厂中的应用[J].建材与装饰,2017,(2):266-267.
[25]Wang H,Wang X J,Chen J,et al.Recovery of nutrients from wastewater by a Mg Cl2modified zeolite and their reuse as an amendment for Cu and Pb immobilization in soil[J].RSCAdvances,2016,6(61):55809-55818.