Adsorption of Pd(Ⅱ)from Aqueous Solution by the Biomass Residue of Brown Alga Laminaria Japonica
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摘要: 用乙醇处理褐藻海带得到其生物质残渣（Residue of Laminaria japonica，简称ROLJ），探讨了ROLJ对水溶液中Pd(Ⅱ)的吸附性能.实验考察了溶液pH、接触时间、温度和初始Pd(Ⅱ)浓度等因素对吸附效果的影响，并探讨了ROLJ对Pd(Ⅱ)的吸附动力学及等温吸附特性.结果表明：在pH为3～4范围内，吸附效果最好；吸附平衡时间为80min；吸附动力学符合伪二级动力学模型；Langmuir等温吸附方程能较好地描述Pd(Ⅱ)在ROLJ上的吸附特性，303 K 时ROLJ对Pd(Ⅱ)静态饱和吸附容量为294.12mg/g.热力学分析结果表明，实验条件下ROLJ对Pd(Ⅱ)的吸附反应是自发、吸热和熵值增加的过程.用0.1M HCl+5%硫脲溶液可洗脱回收Pd(Ⅱ)，ROLJ是一种有应用前景的钯吸附回收材料.
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关键词:
- 吸附
Abstract: The biomass residue of Laminaria japonica (namely ROLJ) was prepared by treating Laminaria japonica with ethanol. The adsorption property of ROLJ for Pd(II) from aqueous solution was investigated. The effects of various parameters such as the initial pH, contact time, temperature and initial metal ion concentration on the adsorption efficiency of Pd(II) were studied. The experimental results showed that the optimum adsorption pH of ROLJ for Pd(II) was 3～4,the adsorption equilibrium time was 80min. The adsorption of Pd (II) on the ROLJ was found to follow the pseudo second order kinetics equation and agree well with Langmuir adsorption isotherm model. Thermodynamic parameters indicated that the adsorption was spontaneous, endothermic accompanied by increase in entropy under the experimental conditions. The recovery of Pd (II) was eluted with 0.1M HCl+5% thiourea solution, which indicated that ROLJ is a promising material for recovery of palladium.-
Keywords:
- adsorption
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Bioresource Technology, 2014, (160):67-78.DOI:http://dx.doi.org/10.1016/j.biortech.2014.01.068 [31]Xiong Y, Xu J, Shan W J, Lou Z N, Fang D W, Zang S L, Han G X .A new approach for rhenium(VII) recovery by using modified brown algae Laminaria japonica adsorbent[J]. Bioresource Technology, 2013, (127): 464–472. DOI: http://dx.doi.org/10.1016/j.biortech.2012.09.099 [32]杨会成，曾名勇，刘尊英，董士远，郭玉华，李瑞雪.超声波微波复合提取海带多酚的工艺研究[J].食品与发酵工业, 2007, 33(11):132-135 [33]Yang H C, Zeng M Y, Liu Z Y, Gong S Y, Guo Y H, Li R X.Study on the Extracting Technology of Kelp Polyphenols with Ultrasonicsnd Microwave Extraction[J].Food and fermentation industries, 2007, 33(11):132-135 [34]Lim, S F, Zheng, Y M, Zou, S W, Chen, J P.Characterization of copper adsorption onto an alginate encapsulated magnetic sorbent by a combined FTIR, XPS, and mathematical modeling study[J]. Environ. Sci. Technol. 2008, 42 (7): 2551–2556. DOI:10.1021/es7021889 [35]Freitas O M, Martins R J, Delerue-Matos C M, Boaventura R A.Removal of Cd(II),Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling[J].Journal of Hazardous Materials, 2008, 153(1-2):493-501 [36].[J]., 2010, (182):518-524 [1]余建民.贵金属萃取化学.北京:化学工业出版社，2010 [2]周一康，李关芳.我国贵金属二次资源回收技术现状[J].稀有金属, 1998, 22(1):63-66 [3]Zhou Y K, Li G F.Technological Status of Recovering Precious Metals from Secondary Resources in China[J].Chinese journal of Rare metal, 1998, 22(1):63-66 [4]汪云华，吴晓峰，童伟锋.铂族金属催化剂回收技术及发展动态[J].贵金属, 2011, 32(1):76-81 [5]Wang Y H, Wu X F, Tong W F.Present Research Status and Developments on Recycling Technology of Renewable Resources of Platinum Group Metals[J].Precious Metals, 2011, 32(1):76-81 [6]谭柯.选择性沉淀法从废催化剂中回收金属把的研究湖南冶金[J].湖南冶金, 2002, (3):17-20 [7]Tan K.Study on recover of palladium from waste catalysts with selective precipitation[J]., 2002, (3):17-20 [8]朱云, 胡汉, 郭淑仙.活性炭吸附铂和钯的实验研究[J].稀有金属, 2001, 25(6):474-477 [9]Zhu Y, Hu H, Guo S X.Experimental Study on Adsorption of Platinum and Palladium with Active Carbon[J].Chinese Journal of raremetals, 2001, 25(6):474-477 [10].[J]., 2005, 10(8):912-921 [11]马弘，侯凯湖.贵金属回收中的离子交换树脂技术[J].中国资源综合利用, 2006, 24(9):7-10 [12]Ma H, Hou K H.Ion-exchange Resin Techniques for recovering precious metals[J].China resources comprehensive utilization, 2006, 24(9):7-10 [13]Sharma R.K, Pandey A, Gulati S, Adholeya A. An optimized procedure for preconcentration, determination and on-line recovery of palladium using highly selective diphenyldiketone-monothiosemicarbazone modified silica gel [J]. Journal of Hazardous Materials, 2012, 209-210:285-292. DOI:10.1016/j.jhazmat.2012.01.022 [14]杨明珠，李耀威，王刚，刘健.改性硅胶对水溶液中Pd2+的吸附[J].环境工程学报.2014，8(12)：5117-5123 [15]Yang M Z, Li Y W, Wang G, Liu J.Adsorption of Pd2+ from aqueous using modified silica gel[J].Chinese Journal of Environmental Engineering, 2014, 8(12):5117-5123 [16]周乐舟, 付胜, 高寿泉, 周方钦.中孔分子筛--分离富集火焰原子吸收光谱法测定烟花中痕量钯的研究与应用[J].分析化学学报, 2009, 28(2):173-176 [17]Zhou L Z, Fu S, Gao S Q, Zhou F Q.Separation preconcentration of mesoporous SBA-15-NH2 Material for Trace Pd(Ⅱ) in Fireworks and Its Determination by Flame Atomic Absorption Spectrometry[J].Journal of Instrumental Analysis, 2009, 28(2):173-176 [18]Zhou L M，Liu J H, Liu Z R.Adsorption of platinum (IV) and palladium ( II) from aqueous solution by thiourea-modified chitosan microspheres[J].Journal of Hazardous Materials, 2009, 172(1):439-446 [19]Fujiwara K, Ramesh A, Maki T, Hasegawa H, Ueda K.Adsorption of platinum (IV),palladium (II) and gold (III) from aqueous solutions onto l-lysine modified crosslinked chitosan resin[J].Journal of Hazardous Materials, 2007, 146(1-2):39-50 [20]Ruhela R, Singh K K, Tomar B S, Sharma J N, Kumar M, Hubli R C, Suri A K.Amberlite XAD-16 functionalized with 2-acetyl pyridine group for the solid phase extraction and recovery of palladium from high level waste solution. Separation and Purification Technology, 2012, 99 :36-43.DOI: http://dx.doi.org/10.1016/j.seppur.2012.08.018 [21]Sharififard H，Soleimani M，Ashtiani F Z.Evaluation of activated carbon and biopolymer modified activated carbon performance for palladium and platinum removal[J].Journal of the Taiwan Institute of Chemical Engineers, 2012, 43(5):696-703 [22]Hassanien M.M. FAAS determination of palladium after its selective recovery by silica modified with hydrazine derivative [J]. Microchim Acta, 2009, 167：81-89. 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DOI 10.1080/19443994.2015.1019370 [25]Mirghaffari N, Moeini E, Farhadian O.Biosorption of Cd and Pb ions from aqueous solutions by biomass of the green microalga, Scenedesmus quadricauda [J] J Appl Phycol, 2015, 27:311-320.DOI:10.1007/s10811-014-0345-z [26]王岩，代群威，陈国华，高超，王先念.藻类吸附剂对六价铬的吸附特性[J].环境工程学报, 2014, 8(5):1769-1774 [27]Wang Y, Dai Q W, Chen G H, Gao C, Wang X N.Cr (Ⅵ) adsorption characteristic of alga adsorbent[J].Chinese Journal of Environmental Engineering, 2014, 8(5):1769-1774 [28]苏峰，罗胜联，曾光明，肖潇，曹喆.海带对镉的吸附动力学与热力学研究[J].环境工程学报, 2009, 3(5):857-860 [29]Su F, Luo S L, Zeng G M, Xiao X, Cao Z.Kinetics and thenmodynamics of Cd(Ⅱ) biosorption onto Laminaria japonica[J].Chinese Journal of Environmental Engineering, 2009, 3(5):857-860 [30]He J, Chen J P .A comprehensive review on biosorption of heavy metals by algal biomass: materials, performances, chemistry, and modelling simulation tools [J]. Bioresource Technology, 2014, (160):67-78.DOI:http://dx.doi.org/10.1016/j.biortech.2014.01.068 [31]Xiong Y, Xu J, Shan W J, Lou Z N, Fang D W, Zang S L, Han G X .A new approach for rhenium(VII) recovery by using modified brown algae Laminaria japonica adsorbent[J]. Bioresource Technology, 2013, (127): 464–472. DOI: http://dx.doi.org/10.1016/j.biortech.2012.09.099 [32]杨会成，曾名勇，刘尊英，董士远，郭玉华，李瑞雪.超声波微波复合提取海带多酚的工艺研究[J].食品与发酵工业, 2007, 33(11):132-135 [33]Yang H C, Zeng M Y, Liu Z Y, Gong S Y, Guo Y H, Li R X.Study on the Extracting Technology of Kelp Polyphenols with Ultrasonicsnd Microwave Extraction[J].Food and fermentation industries, 2007, 33(11):132-135 [34]Lim, S F, Zheng, Y M, Zou, S W, Chen, J P.Characterization of copper adsorption onto an alginate encapsulated magnetic sorbent by a combined FTIR, XPS, and mathematical modeling study[J]. Environ. Sci. Technol. 2008, 42 (7): 2551–2556. DOI:10.1021/es7021889 [35]Freitas O M, Martins R J, Delerue-Matos C M, Boaventura R A.Removal of Cd(II),Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling[J].Journal of Hazardous Materials, 2008, 153(1-2):493-501 [36].[J]., 2010, (182):518-524
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