Characteristics of cadmium adsorption on particulate organic matter isolated from an acidic purple paddy soil
ZHANG Lan-ping1,2, MIN Wen-hao1,2, FAN Zhi-qiang1,2, ZHAO Xiu-lan1,2, WEI Shi-qiang1,2
1. Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;
2. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, China
Characteristics of cadmium ion (Cd2+) adsorption on particulate organic matter (POM) isolated from a typical acid purple paddy soil were investigated by means of scanning electron microscopy-energy dispersive spectrometer (EDS), fourier transform infrared spectroscopy (FTIR), and the fractionation of Cd2+ in POM before and after adsorption. The affinity of Cd2+ to POM was much higher than that to the original soil. The adsorption kinetic data could be well described by the pseudo-secondary order equation. The Freundlich equation was better than Langmuir model in describing Cd2+ adsorption isotherm of POM, indicating that the adsorption of Cd2+ on POM was a heterogeneous multi-molecular layer adsorption. The negative Gibbs free energy (DGθ), and the positive Entropy (DHθ) and Enthalpy (DSθ) illustrated that the adsorption was a spontaneous endothermic process. The value of DHθand the desorption rate of adsorbed Cd2+ indicated that Cd2+ was bond to POM primarily through chemical reactions, while to the original soil it did mainly through physical forces. The fractionation showed that the adsorption process increased the percentage of exchangeable Cd2+ in the original soil and the percentage of exchangeable and complex forms in POM. The above results together with the analysis of EDS and the FTIR spectra revealed that the mechanisms of Cd2+adsorption on POM included complexation of oxygen-containing functional groups, ion exchange, cation-π bonding, precipitation and electrostatic adsorption.
Niazi N K, Singh B, Minasny B, et al.Mid-infrared spectroscopy and partial least-squares regression to estimate soil arsenic at a highly variable arsenic-contaminated site [J].Environmental Science & Technology, 2015,12:1965-1974.
[2]
吴曼,徐明岗,徐绍辉,等.有机质对红壤和黑土中外源铅镉稳定化过程的影响[J].农业环境科学学报, 2011,30(3):461-467. Wu M, Xu M G, Xu S H, et al.Effects of organic matter on the stabilization process of added cadmium and lead in red soil and black soil [J].Journal of Agro-Environment Science, 2011,30(3):461-467.
[3]
刘铮,白英,刘琴.熟污泥改性黄土对铜的吸附解吸特征[J].中国环境科学, 2014,34(9):2306-2312. Liu Z, Bai Y, Liu Q, et al.Sorption and desorption of copper in loess improved by composted sludge [J].China Environmental Science, 2014,34(9):2306-2312.
[4]
Li Z W,Huang B, Huang J Q, et al.Influence of removal of organic matter and iron and manganese oxides on cadmium adsorption by red paddy soil aggregates [J].RSC Advances, 2015,5(110):90588-90595.
[5]
李虎,贺婧,刘冲,等.农田灰钙土中有机质和碳酸钙对Zn吸附-解吸行为的影响[J].中国环境科学, 2015,35(6):1786- 1793. Li H, He J, Liu C, et al.Effect of organic matter and calcium carbonate on behaviors of zinc adsorption-desorption on/from Ningxia farmland sierozem soils [J].China Environmental Science, 2014,34(9):2306-2312.
[6]
李杰颖,梁成华,杜立宇.土壤有机质对汞在棕壤中吸附－解吸行为的影响[J].水土保持通报, 2014,34(6):32-42. Li J Y, Liang C H, Du L Y, et al.Effect of organic matter on mercury adsorption-desorption in brown soil [J].Bulletin of Soil and Water Conservation, 2014,34(6):32-42.
[7]
郭微,戴九兰,王仁卿.溶解性有机质影响土壤吸附重金属的研究进展[J].土壤通报, 2012,43(3):761-768. Guo W, Dai J L, W R Q, et al.Progress in the effect of dissolved organic matter on adsorption of heavy metals by soil [J].Chinese Journal of Soil Science, 2012,43(3):761-768.
[8]
冯启言,张彦,孟庆俊.煤矿区废水中溶解性有机质与铜的结合特性[J].中国环境科学, 2013,33(8):1433-1441. Feng Q Y, Zhang Y, Meng Q J, et al.Quantitative characterization of Cu binding potential of dissolved organic matter in wastewater of mining area [J].China Environmental Science, 2013,33(8):1433-1441.
[9]
Wang X N, Wang S, Pan X L, et al.Heteroaggregation of soil particulate organic matter and biogenic selenium nanoparticles for remediation of elemental mercury contamination [J].Chemosphere, 2019,221:486-492.
[10]
袁颖红,李辉信,黄欠如,等.长期施肥对水稻土颗粒有机碳和矿物结合态有机碳的影响[J].生态学报, 2008,28(1):353-360. Yuan Y H, Li H X, Huang Q R, et al.Effects of long-term fertilization on particulate organic carbon and mineral organic carbon of the paddy soil [J].Acta Ecologica Sinica, 2008,28(1):353-360.
[11]
郑顺安,郑向群,刘书田,等.再生水灌溉下紫色水稻土颗粒态有机质中重金属的富集特征[J].水土保持学报, 2012,26(2):246-250. Zheng S A, Zheng X Q, Liu S T, et al.Heavy metal enrichment in particulate organic matter from reclaimed water irrigated purple paddy soil [J].Journal of Soil and Water Conservation, 2012,26(2):246-250.
[12]
Zeller B, Dambrine E.Coarse particulate organic matter is the primary source of mineral N in the topsoil of three beech forests [J].Soil Biology & Biochemistry, 2011,43(3):542-550.
[13]
Ha K V, Marschner P, Buenemann E K.Dynamics of C, N, P and microbial community composition in particulate soil organic matter during residue decomposition [J].Plant and Soil, 2008,303(1/2): 253-264.
[14]
Sebastia J, Van Oort F, Lamy I.Buffer capacity and Cu affinity of soil particulate organic matter (POM) size fractions [J].European Journal of Soil Science, 2008,59(2):304-314.
[15]
Shi J, Wu Q, Zheng C, et al.The interacotin between particulate organic matter and Copper, Zinc in paddy soil [J].Environmental Pollution, 2018,243:1394-1402.
[16]
Luo Y F, Wu Y G, Shu J, Wu Z X.Effect of particulate organic matter fractions on the distribution of heavy metals with aided phytostabilization at a zinc smelting waste slag site [J].Environmental Pollution, 2019,253:330-341.
[17]
章明奎,郑顺安,王丽平.土壤颗粒状有机质对重金属的吸附作用[J].土壤通报, 2007,38(6):1100-1104. Zhang M K, Zheng S A, Wang L P, et al.Adsorption of heavy metals by soil particulate organic matter [J].Chinese Journal of Soil Science, 2007,38(6):1100-1104.
[18]
Guo X Y, Zhang S Z, Shan X Q, et al.Characterization of Pb, Cu, and Cd adsorption on particulate organic matter in soil [J].Environmental Toxicology and Chemistry, 2006,25(9):2366-2373.
[19]
Balabane M, Faivre D, van Oort F, et al.Mutual effects of soil organic matter dynamics and heavy metals fate in a metallophyte grassland [J].Environmental Pollution, 1999,105(1):45-54.
[20]
Zhao X L, Jiang T, Du B.Effect of organic matter and calcium carbonate on behaviors of cadmium adsorption-desorption on/from purple paddy soils [J].Chemosphere, 2014,99:41-48.
[21]
鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社, 2000. Lu R K.Analytical methods of soil agricultural chemistry [M].Beijing: Agriculture Science and Technology Press, 2000.
[22]
王丽平,郑顺安,章明奎.土壤颗粒态有机质中铜和铅的结合特征[J].浙江大学学报农业与生命科学版, 2007,33(6):667-670. Wang L P, Zheng S A, Zhang M K, et al.Binding characteristics of copper and lead in soil particulate organic matter [J].Journal of Zhejiang University(Agric.& Life Sci.), 2007,38(6):1100-1104.
[23]
Dawood S, Sen T K, Phan C.Synthesis and characterization of slow pyrolysis pine cone bio-char in the removal of organic and inorganic pollutants from aqueous solution by adsorption: Kinetic, equilibrium, mechanism and thermodynamic [J].Bioresource Technology, 2017, 246:76-81.
[24]
Stromer B S, Woodbury B, Williams C F.Tylosin sorption to diatomaceous earth described by Langmuir isotherm and Freundlich isotherm models [J].Chemosphere, 2018,193:912-920.
[25]
朱丹尼,邹胜章,周长松.岩溶区石灰性土壤对Cd2+吸附的解吸特性及滞后效应[J].环境化学, 2016,35(7):1407-1414. Zhu D N, Zou S Z, Zhou C S, et al.Desorption characteristics and hysteresis of adsorbed cadmium in calcareous soils on karstarea [J].Environmental Chemistry, 2016,35(7):1407-1414.
[26]
郭文娟,梁学峰,林大松,等.土壤重金属钝化修复剂生物炭对镉的吸附特性研究[J].环境科学, 2013,34(9):3716-3721. Guo W J, Liang X F, Lin D S, et al.Adsorption of Cd2+ on biochar from aqueous solution [J].Environmental Science, 2013,34(9):3716-3721.
[27]
Regmi P, Garcia Moscoso J L, Kumar S, et al.Removal of copper and cadmium from aqueous solution using switchgrass biochar produced via hydrothermal carbonization process [J].Journal of Environmental Management, 2012,109:61-69.
[28]
常春,王胜利,郭景阳,等.不同热解条件下合成生物炭对铜离子的吸附动力学研究[J].环境科学学报, 2016,36(7):2491-2502. Chang C, Wang S L, Guo J Y, et al.Adsorption kinetics and mechanism of copper ion on biochar with different pyrolysis condition [J].Acta Scientiae Circumstantiae, 2016,36(7):2491-2502.
[29]
易蔓,李婷婷,李海红,等.Ca/Mg负载改性沼渣生物炭对水中磷的吸附特性[J].环境科学, 2019,40(3):1318-1327. Yi M, Li T T, Li H H, et al.Characteristic of phosphorus adsorption in aqueous solution by Ca/Mg-loaded biogas residue biochar [J].Environmental Science, 2019,40(3):1318-1327.
[30]
王哲,黄国和,安春江,等.对硝基苯酚在高炉水淬渣上的吸附机制及表面分形研究[J].环境科学, 2016,37(6):2211-2219. Wang Z, Huang G H, An C J, et al.Mechanism and surface fractal characteristics for the adsorption of p-nitrophenol on water-quenched blast furnace slag [J].Environmental Science, 2016,37(6):2211-2219.
[31]
Mohamed I, Ahamadou B, Li M, et al.Fractionation of copper and cadmium and their binding with soil organic matter in a contaminated soil amended with organic materials [J].Journal of Soils and Sediments, 2010,10:973-982.
[32]
王彤彤,马江波,曲东,等.两种木材生物炭对铜离子的吸附特性及其机制[J].环境科学, 2017,38(5):2161-2171. Wang T T, Ma J B, Qu D, et al.Characteristics and mechanism of copper adsorption from aqueous solutions on biochar produced from sawdust and apple branch [J].Environmental Science, 2017,38(5): 2161-2171.
[33]
郑翠清.水稻(Oryza sativa L.)根际颗粒态有机质与重金属交互作用的机制[D].杭州:浙江大学, 2016. Zheng C Q.The mechanism of interaction between particulate organic matter and heavy metal in rice (Oryza sativa L.) rhizosphere [D].Hangzhou: Zhejiang University, 2016.
[34]
孙航,蒋煜峰,石磊平,等.不同热解及来源生物炭对西北黄土吸附敌草隆的影响[J].环境科学, 2016,37(12):4857-4866. Sun H, Jiang Y F, Shi L P, et al.Adsorption and influential factors of Diuron on the loess soil by adding different biochar prepared at varying temperatures [J].Environmental Science, 2016,37(12):4857-4866.
[35]
李秋言.紫色水稻土颗粒有机质(POM)及其对重金属的富集特征[D].重庆:西南大学, 2017. Li Q Y.Accumulation of heavy metals in particulate organic matter(POM) from purple paddy soils [D].Chongqing: Southwest University, 2017.
[36]
陈友媛,惠红霞,卢爽,等.浒苔生物炭的特征及其对Cr(Ⅵ)的吸附特点和吸附机制[J].环境科学, 2017,38(9):3953-3961. Chen Y Y, Hui H X, Lu S, et al.Characteristics of enteromorpha prolifera biochars and their adsorption performance and mechanisms for Cr(Ⅵ) [J].Environmental Science, 2017,38(9):3953-3961.
[37]
Loganathan P, Vigneswaran S, Kandasamy J, et al.Cadmium sorption and desorption in soils: A Review [J].Critical Reviews in Environmental Science and Technology, 2012,42(5):489-533.
[38]
Hettiarachchi G M, Ryan J A, Chaney R L, et al.Sorption and desorption of cadmium by different fractions of biosolids-amended soils [J].Journal of Environmental Quality, 2003,32:1684-1693.
[39]
段德超,戴露莹,徐劼,等.某冶炼厂周边土壤碳组分与铜形态的相关性[J].环境科学学报, 2016,36(8):3027-3032. Duan D C, Dai D Y, Xu J, et al.Relationship between organic carbon fractions and copper speciation in soil around the smelting area [J].Acta Scientiae Circumstantiae, 2016,36(8):3027-3032.
[40]
Yang H E, Wang Y B, Huang Y J.Chemical fraction sand phytoavailability of copper to rape grown in the polluted paddy soil [J].International Journal of Environmental Science and Technology, 2015,12:2929-2938.
