Fe_(78)Si_9B_(13)非晶合金还原水中Cu(Ⅱ)的性能研究
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摘要
采用单辊甩带法制备Fe_(78)Si_9B_(13)非晶合金条带,研究其对水中Cu(Ⅱ)的去除效果。结果表明,反应60min,添加量为1g/L的Fe_(78)Si_9B_(13)非晶条带对初始浓度为50mg/L的Cu(Ⅱ)去除率达98.4%,且其去除过程符合伪一级动力学模型。在相同条件下,Fe_(78)Si_9B_(13)非晶条带对Cu(Ⅱ)还原反应的表面积约化反应速率系数为300目还原Fe粉的341倍。通过研究不同环境条件下Fe_(78)Si_9B_(13)非晶条带对Cu(Ⅱ)去除速率的影响,发现反应速率与溶液的温度、条带用量成正比,与Cu(Ⅱ)溶液的初始浓度成反比。连续使用4次后的Fe_(78)Si_9B_(13)非晶条带仍保留61.1%的Cu(Ⅱ)去除能力。
The Fe_(78)Si_9B_(13) amorphous alloy ribbon was prepared by melt-spun method,and its removal efficiency on Cu(Ⅱ)in aqueous solution was investigated.The results show that 98.4% of Cu(Ⅱ)(50 mg/L)can be removed within 60 min by 1 g/L Fe_(78)Si_9B_(13) amorphous ribbons.Kinetic analysis show that the removal process can be described by apseudo-first-order kinetic model.Under the same conditions,the surface normalized reaction rate constant for the uptake of Cu(Ⅱ)by Fe_(78)Si_9B_(13) amorphous alloy ribbon is 341 times larger than those obtained by using 300 mesh iron powders.The experiments under different environmental conditions reveal that the apparent rate constant is proportional to the temperature of the solution and the dosage of the ribbons,and inversely proportional to the initial concentration of Cu(Ⅱ).Cyclic experiments show that the Fe_(78)Si_9B_(13) amorphous ribbon retains 61.1% of the removal ability after 4 consecutive uses.
The Fe_(78)Si_9B_(13) amorphous alloy ribbon was prepared by melt-spun method,and its removal efficiency on Cu(Ⅱ)in aqueous solution was investigated.The results show that 98.4% of Cu(Ⅱ)(50 mg/L)can be removed within 60 min by 1 g/L Fe_(78)Si_9B_(13) amorphous ribbons.Kinetic analysis show that the removal process can be described by apseudo-first-order kinetic model.Under the same conditions,the surface normalized reaction rate constant for the uptake of Cu(Ⅱ)by Fe_(78)Si_9B_(13) amorphous alloy ribbon is 341 times larger than those obtained by using 300 mesh iron powders.The experiments under different environmental conditions reveal that the apparent rate constant is proportional to the temperature of the solution and the dosage of the ribbons,and inversely proportional to the initial concentration of Cu(Ⅱ).Cyclic experiments show that the Fe_(78)Si_9B_(13) amorphous ribbon retains 61.1% of the removal ability after 4 consecutive uses.
引文
[1]WANG J,ZONG Q.A new turn-on fluorescent probe for the detection of copper ion in neat aqueoussolution[J].Sensors&Actuators Chemical,2015,B216:572-577.
[2]AWUAL M R,ISMAEL M,YAITA T,et al.Tracecopper(Ⅱ)ions detection and removal from water using novel ligand modified composite adsorbent[J].Chemical Engineering Journal,2013,222(15):67-76.
[3]KARABELLI D,SCOTT T B,SHAHWAN T,et al.Batch removal of aqueous Cu2+ions using nanoparticles of zero-valent iron:A study of the capacity and mechanism of uptake[J].Industrial&Engineering Chemistry Research,2008,47(14):4 758-4 764.
[4]李钰婷,张亚雷,代朝猛,等.纳米Fe颗粒去除水中重金属的研究进展[J].环境化学,2012,31(9):1 349-1 354.
[5]ZHANG C,ZHU Z,ZHANG H,et al.On thedecolorization property of Fe-Mo-Si-B alloys with different structures[J].Journal of Non-Crystalline Solids,2012,358(1):61-64.
[6]CRANE R A,SCOTT T B.Nanoscale zero-valent iron:future prospects for an emerging water treatment technology[J].Journal of Hazardous Materials,2012,211-212:112-125.
[7]乐文凯,袁子洲,周子刚,等.Zr基非晶合金在含Cl介质中的腐蚀行为[J].特种铸造及有色合金,2016,36(1):77-79.
[8]徐骏,袁子洲,李断弦,等.Sn对Ti-Zr-Cu-Ni系非晶薄带热稳定性及耐蚀性能的影响[J].特种铸造及有色合金,2015,35(12):1 311-1 314.
[9]TANG Y,SHAO Y,CHEN N,et al.Insight into the high reactivity of commercial Fe-Si-B amorphous zero-valent iron in degrading azo dye solutions[J].Rsc.Advances,2015,43(5):34 032-34 039.
[10]RANGISVEK R,JEKEL M R.Removal of dissolved metals by zero-valent iron(ZVI):Kinetics,equilibria,processes and implications for stormwater runoff treatment[J].Water Research,2005,39(17):4 153-4 163.
[11]AZZAM A M,EL-WAKEEL S T,MOSTAFA B B,et al.Removal of Pb,Cd,Cu and Ni from aqueous solution using nano scale zero valent iron particles[J].Journal of Environmental Chemical Engineering,2016,4(2):2 196-2 206.
[12]WANG Q,QIANG J B,WANG Y M,et al.From clusters to phase diagrams:composition rules ofquasicrystals and bulk metallic glasses[J].Journal of Physics,2007,D40(15):273-281.
[13]AND X L,ZHANG W.Sequestration of metalcations with zero valent iron nanoparticles a study with high resolution x-ray photoelectron spectroscopy(HR-XPS)[J].Journal of Physical Chemistry,2007,C111(19):6 939-6 946.
[14]EFECAN N,SHAHWAN T,LIEBERWIRTH I,et al.Characterization of the uptake of aqueous Ni 2+ions on nanoparticles of zero-valent iron(nZVI)[J].Desalination,2009,249(3):1 048-1 054.
[2]AWUAL M R,ISMAEL M,YAITA T,et al.Tracecopper(Ⅱ)ions detection and removal from water using novel ligand modified composite adsorbent[J].Chemical Engineering Journal,2013,222(15):67-76.
[3]KARABELLI D,SCOTT T B,SHAHWAN T,et al.Batch removal of aqueous Cu2+ions using nanoparticles of zero-valent iron:A study of the capacity and mechanism of uptake[J].Industrial&Engineering Chemistry Research,2008,47(14):4 758-4 764.
[4]李钰婷,张亚雷,代朝猛,等.纳米Fe颗粒去除水中重金属的研究进展[J].环境化学,2012,31(9):1 349-1 354.
[5]ZHANG C,ZHU Z,ZHANG H,et al.On thedecolorization property of Fe-Mo-Si-B alloys with different structures[J].Journal of Non-Crystalline Solids,2012,358(1):61-64.
[6]CRANE R A,SCOTT T B.Nanoscale zero-valent iron:future prospects for an emerging water treatment technology[J].Journal of Hazardous Materials,2012,211-212:112-125.
[7]乐文凯,袁子洲,周子刚,等.Zr基非晶合金在含Cl介质中的腐蚀行为[J].特种铸造及有色合金,2016,36(1):77-79.
[8]徐骏,袁子洲,李断弦,等.Sn对Ti-Zr-Cu-Ni系非晶薄带热稳定性及耐蚀性能的影响[J].特种铸造及有色合金,2015,35(12):1 311-1 314.
[9]TANG Y,SHAO Y,CHEN N,et al.Insight into the high reactivity of commercial Fe-Si-B amorphous zero-valent iron in degrading azo dye solutions[J].Rsc.Advances,2015,43(5):34 032-34 039.
[10]RANGISVEK R,JEKEL M R.Removal of dissolved metals by zero-valent iron(ZVI):Kinetics,equilibria,processes and implications for stormwater runoff treatment[J].Water Research,2005,39(17):4 153-4 163.
[11]AZZAM A M,EL-WAKEEL S T,MOSTAFA B B,et al.Removal of Pb,Cd,Cu and Ni from aqueous solution using nano scale zero valent iron particles[J].Journal of Environmental Chemical Engineering,2016,4(2):2 196-2 206.
[12]WANG Q,QIANG J B,WANG Y M,et al.From clusters to phase diagrams:composition rules ofquasicrystals and bulk metallic glasses[J].Journal of Physics,2007,D40(15):273-281.
[13]AND X L,ZHANG W.Sequestration of metalcations with zero valent iron nanoparticles a study with high resolution x-ray photoelectron spectroscopy(HR-XPS)[J].Journal of Physical Chemistry,2007,C111(19):6 939-6 946.
[14]EFECAN N,SHAHWAN T,LIEBERWIRTH I,et al.Characterization of the uptake of aqueous Ni 2+ions on nanoparticles of zero-valent iron(nZVI)[J].Desalination,2009,249(3):1 048-1 054.