辉光放电电解等离子放电参数对纤维素基水凝胶吸附重金属离子的影响
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- 英文论文题名：Effects of Glow Discharge Electrolysis Plasma Parameters on Adsorption Properties of Cellulose-Based Hydrogel
- 论文作者：张文明 ; 黄莹 ; 崔宁 ; 丁跃迪 ; 李玲 ; 李晓苇
- 英文论文作者：ZHANG Wen-ming ; HUANG Ying ; CUI Ning ; DING Yue-di ; LI Ling ; LI Xiao-wei ; College of Physics Science and Technology ; Hebei University
- 年：2015
- 作者机构：河北大学物理科学与技术学院;
- 论文关键词：辉光放电电解等离子体 ; 放电电压 ; 放电时间 ; 纤维素 ; 水凝胶 ; 重金属离子 ; 吸附动力学
- 英文论文关键词：glow discharge electrolysis plasma ; discharge volgate ; discharge time ; cellulose ; hydrogel ; heavy metal ions ; adsorption kinetics
- 会议召开时间：2015-08-12
- 会议录名称：静电放电：从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议论文集
- 语种：中文
- 分类号：O647.3;O461
- 学会代码：WLJD
- 会议名称：静电放电 ; 从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议
- 会议地点：中国河北石家庄
- 主办单位：中国物理学会静电专业委员会
- 学会名称：中国物理学会静电专业委员会
- 页数：6
- 文件大小：656k
- 原文格式：D
- 会议级别：全国
摘要
本文研究辉光放电电解等离子体放电参数(放电电压和放电时间)对其引发合成的纤维素基水凝胶材料吸附重金属性能影响,进一步拓展该放电技术的应用领域,为其在重金属离子污染的废水处理方面提供理论依据。通过不同的放电电压和放电时间制备一系列以纤维素为基材的水凝胶,通过浸泡、恒温震荡、EDTA滴定实验检测水凝胶对重金属的吸附能力,优化制得水凝胶放电参数的最佳条件;通过准二级动力学模型和Langmuir等温方程描述不同放电参数下制得水凝胶吸附重金属离子动力学。结果得出,不同放电电压和放电时间对水凝胶金属离子吸附性能有较大影响,水凝胶对重金属离子的吸附容量随着pH值的增加而增大,可在60 min内达到吸附平衡,吸附机制为离子交换吸附,吸附动力学可用准二级动力学模型和Langmuir等温方程描述,水凝胶经过吸附-解吸8次循环后,仍有较高的吸附性能。结论,在放电电压620 V,放电时间90 s下,制得的水凝胶对Pd~(2+)、Cd~(2+)和Zn~(2+)的最大吸附量可达597、425和168 mg/g。
The purpose of this work was to investigate the effects of glow discharge electrolysis plasma parameters(discharge voltage and discharge time)on adsorption properties of cellulose-based hydrogel.To further expand the application field of the discharge technology and provide theory basis for the pollution of heavy metal ions wastewater treatment.A series of cellulose-based hydrogels were synthesized using various discharge voltage and discharge time.The adsorption capacity of hydrogels was tested through soak,oscillation and standard EDTA titration experiments.The best conditions of discharge parameters were optimized.The adsorption kinetics of hydrogels was investigated by accurate secondary dynamics model and the langmuir isotherm equation.The discharge voltage and discharge time on hydrogel had great influence on the adsorption capacity.The adsorption capacity increased with the increasing of p H.The adsorption equilibrium time was approximately 60 min.The results show that the adsorption process was an ion-exchange mechanism,which suggested that the adsorption kinetics fits the pseudo-second-order model and the adsorption follows the Langmuir model.Furthermore,cellulose-based hydrogel also exhibited highly efficient adsorption of metal ions after 8 repeated adsorption/desorption cycles.The maximum adsorption capacities of Pd~(2+),Cd~(2+),and Zn~(2+)were 597,425 and 168 mg/g,respectively,under 620 V and 90 s.
The purpose of this work was to investigate the effects of glow discharge electrolysis plasma parameters(discharge voltage and discharge time)on adsorption properties of cellulose-based hydrogel.To further expand the application field of the discharge technology and provide theory basis for the pollution of heavy metal ions wastewater treatment.A series of cellulose-based hydrogels were synthesized using various discharge voltage and discharge time.The adsorption capacity of hydrogels was tested through soak,oscillation and standard EDTA titration experiments.The best conditions of discharge parameters were optimized.The adsorption kinetics of hydrogels was investigated by accurate secondary dynamics model and the langmuir isotherm equation.The discharge voltage and discharge time on hydrogel had great influence on the adsorption capacity.The adsorption capacity increased with the increasing of p H.The adsorption equilibrium time was approximately 60 min.The results show that the adsorption process was an ion-exchange mechanism,which suggested that the adsorption kinetics fits the pseudo-second-order model and the adsorption follows the Langmuir model.Furthermore,cellulose-based hydrogel also exhibited highly efficient adsorption of metal ions after 8 repeated adsorption/desorption cycles.The maximum adsorption capacities of Pd~(2+),Cd~(2+),and Zn~(2+)were 597,425 and 168 mg/g,respectively,under 620 V and 90 s.
引文
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[2]Alvaro S,Greame J,Carl A,et al.Effect of cyclohexylene bridges on the metal ion size based selectivity of ligands in aqueous solution[J].Inorganic Chemistry,2002,30,18.
[3]Uckun F M,Evans W E,Forsyth C J,et al.Biotherapy of B-cell precursor leukemia by targeting genistein to CD19-associated tyrosine kinases[J].Science,1995,267(5199),886-891.
[4]Martin T P,Davies G A.The extraction of copper from dilute aqueous solutions using a liquid membrane process[J].Hydrometallurgy,1977,2,315-334.
[5]Pérez G,Fernández-Alba A R,Urtiaga A M,et al.Electro-oxidation of reverse osmosis concentrates generated in tertiary water treatment[J].Water research,2010,44(9),2763-2772.
[6]Chang Y,Zhang L.Cellulose-based hydrogels:present status and application prospects[J].Carbohydrate Polymers,2011,84,40-53.
[7]李晓丽.聚合物基新型复合吸附材料的制备及对水体中重金属污染物的吸附性能研究[D].甘肃:兰州大学,2013,5.LI Xiaoli.Preparation of novel composite adsorbents based on polymer matrix and the research on the adsorption of heavy metals in aqueous solutions[D].Gansu,China:Lanzhou University,2013,5.
[8]Chang C,Duan B,Cai J,et al.Superabsorbent hydrogels based on cellulose for smart swelling and controllable delivery[J].European Polymer Journal,2010,46:92-100.
[9]Zhong L,Peng X,Yang D,et al.Adsorption of heavy metals by a porous bioadsorbent from lignocellulosic biomass reconstructed in an ionic liquid[J].Journal of Agricultural and Food Chemistry,2012,60:5621-5628.
[10]Hoffman A.Hydrogels for biomedical applications[J].Advanced Drug Delivery Reviews,2002,54:3-12.
[11]Sen G,Singh R,Pal S.Microwave-initiated synthesis of polyacrylamide grafted sodium alginate:synthesis and characterization[J].Journal of Applied Polymer Science,2010,115:63-71.
[12]张文明,张玉苍,李庆等.辉光放电电解等离子体引发纤维素基水凝胶的制备及其多重响应行为[J].高电压技术,2015,41,523-528.Zhang W,Zhang Y,Li Q,et al.Glow Discharge Electrolysis Plasma Induced Synthesis of Cellulose-graft-acrylic[J].2015,41,523-528.Hydrogels and Their Multiple Responses Behaviors
[13]Chang C,He M,Zhou J,et al.Swelling behaviors of p H-and Salt-responsive cellulose-based hydrogels[J].Macromolecules,2011,44:1642-1648.
[14]Sengupat S,Singh R,Srivastava A.A study on the origin of nonfaradaic behavior of anodic contact glow discharge electrolysis:The relationship between power dissipated in glow discharges and nonfaradaic yields[J].Jounal of the Electrochemical society,1998,145:2209-2213.
[15]Gao J,Li Y,Li Y,et al.Fabrication of superhydrophobic surface of stearic acid grafted zinc by using an aqueous plasma etching technique[J].Central European Journal of Chemistry,2012,10(6):1766-1772.
[16]Gao J,Wang A,Li Y,et al.Synthesis and characterization of superabsorbent composite by using glow discharge electrolysis plasma[J].Reactive and Functional Polymers,2008,68,1377-1383.
[17]Gao J,Ma D,Lu Q,et al.Synthesis and characterization of montmorillonite-graft-acrylic acid superabsorbent by using glow discharge electrolysis plasma[J].Plasma Chemistry and Plasma Processing,2010,30,873-883.
[18]Gao J,Li Y,Li Y,et al.Fabrication of superhydrophobic surface of stearic acid grafted zinc by using an aqueous plasma etching technique[J].Centtal European Journal of Chemistry,10(6),1766-1772.
[19]王兴刚.辉光放电电解等离子体在高分子复合材料合成中的应用[D].甘肃:西北师范大学,2010,5.Wang X.Application of glow discharge electrolysis plasma in synthesis of polymer composite materials[D].Gansu,China:Northwest Normal University,2010,5.
[20]Peng X,Zhong L,Ren J,et al.Highly effective adsorption of heavy metal ions from aqueous solutions by macroporous xylan-rich hemicelluloses-based hydrogel[J].Journal of Agricultural and Food Chemistry,2012,60:3909-3916.
[21]Nada A A,El-Wakil N A,Hassan M L,et al.Differential adsorption of heavy metal ions by cotton stalk cation exchang-ers containing multiple functional group[J].Journal of Applied Polymer Science,2006,101(6):4124-4132.
[22]Pellera F M,Giannis A,Kalderis D,et al.Adsorption of Cu(II)ions from aqueous solutions on biochars prepared from agricultural by-products[J].Journal of Environmental Management,2012,96:35-42.
[23]Zhu C S,Wang L P,Chen W B,et al.Removal of Cu(II)from aqueous solution by agricultural by-product:Peanut hull[J].Journal of Hazardous Materials,2009,168:739-746.
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