Variations in cadmium (Cd) tolerances and accumulations among fifteen wetland plant species in moderately (0.5 mg·L−1) and heavily (1.0 mg·L−1) Cd-polluted wastewaters were investigated in constructed wetlands. Cd removal efficiencies from the wastewaters were more than 90%, and 23.5% and 16.8% of the Cd in the water accumulated in wetland plants for 0.5 and 1.0 mg·L−1 Cd treatments, respectively. The variations among the plant species were 29.4-fold to 48.7-fold in plant biomasses, 5.4-fold to 21.9-fold in Cd concentrations, and 13.8-fold to 29.6-fold in Cd accumulations. The plant species were also largely diversified in terms of Cd tolerance. Some species were tolerant of heavy Cd stress, and some others were sensitive to moderate Cd level. Four wetland plant species were selected for the treatment of Cd-polluted wastewater for their high Cd accumulating abilities and relative Cd tolerances. Plant Cd quantity accumulations are correlated positively and significantly (P <0.05) with plant biomasses and correlated positively but insignificantly (P >0.05) with plant Cd concentrations. The results indicate that the Cd accumulation abilities of wetland plant species are determined mainly by their biomasses and Cd tolerances in growth, which should be the first criteria in selecting wetland plant species for the treating Cd-polluted wastewaters. Cd concentration in the plants may be the second consideration.
| [1] |
DalCorso G, Farinati S, Maistri S, Furini A. How plants cope with cadmium: staking all on metabolism and gene expression. Journal of Integrative Plant Biology, 2008, 50(10): 1268–1280
|
| [2] |
Madejón P, Marañón T, Murillo J M, Robinson B. White poplar (Populus alba) as a biomonitor of trace elements in contaminated riparian forests. Environmental Pollution, 2004, 132(1): 145–155
|
| [3] |
Wang H, Jia Y, Wang S, Zhu H, Wu X. Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis. Journal of Hazardous Materials, 2009, 167(1−3): 641–646
|
| [4] |
Solano M L, Soriano P, Ciria M P. Constructed wetlands as a sustainable solution for wastewater treatment in small villages. Biosystems Engineering, 2004, 87(1): 109–118
|
| [5] |
Carty A, Scholz M, Heal K, Gouriveau F, Mustafa A. The universal design, operation and maintenance guidelines for farm constructed wetlands (FCW) in temperate climates. Bioresource Technology, 2008, 99(15): 6780–6792
|
| [6] |
Kaseva M E. Performance of a sub-surface flow constructed wetland in polishing pre-treated wastewater-a tropical case study. Water Research, 2004, 38(3): 681–687
|
| [7] |
Korkusuz E A, Beklioglu M, Demirer G N. Comparison of the treatment performance of the blast furnace slag-based and gravel-based vertical flow wetlands operated identically for domestic wastewater treatment in Turkey. Ecological Engineering, 2005, 24(3): 187–200
|
| [8] |
Zhang D Q, Gersberg R M, Hua T, Zhu J, Tuan N A, Tan S K. Pharmaceutical removal in tropical subsurface flow constructed wetlands at varying hydraulic loading rates. Chemosphere, 2012, 87(3): 273–277
|
| [9] |
Rai U N, Tripathi R D, Singh N K, Upadhyay A K, Dwivedi S, Shukla M K, Mallick S, Singh S N, Nautiyal C S. Constructed wetland as an ecotechnological tool for pollution treatment for conservation of Ganga river. Bioresource Technology, 2013, 148: 535–541
|
| [10] |
Bulc T G. Long term performance of a constructed wetland for landfill leachate treatment. Ecological Engineering, 2006, 26(4): 365–374
|
| [11] |
Justin M Z, Zupančič M. Combined purification and reuse of landfill leachate by constructed wetland and irrigation of grass and willows. Desalination, 2009, 24: 15–16
|
| [12] |
Bobbink R, Whigham D F, Beltman B, Verhoeven J T A. Wetland functioning in relation to biodiversity conservation and restoration. In: Bobbink R, Beltman B, Verhoeven J T A, Whigham D F, eds. Wetlands: functioning, biodiversity conservation, and restoration. Berlin: Springer, 2006, 1–12.
|
| [13] |
Maine M A, Suñe N, Hadad H, Sánchez G, Bonetto C. Removal efficiency of a constructed wetland for wastewater treatment according to vegetation dominance. Chemosphere, 2007, 68(6): 1105–1113
|
| [14] |
Deng H, Ye Z H, Wong M H. Accumulation of lead, zinc, copper and cadmium by 12 wetland plant species thriving in metal-contaminated sites in China. Environmental Pollution, 2004, 132(1): 29–40
|
| [15] |
Ye Z H, Cheung K C, Wong M H. Copper uptake in Typha latifolia as affected by iron and manganese plaque on the root surface. Canadian Journal of Botany, 2001, 79(3): 314–320
|
| [16] |
Stoltz E, Greger M. Accumulation properties of As, Cd, Cu, Pb and Zn by four wetland plant species growing on submerged mine tailings. Environmental and Experimental Botany, 2002, 47(3): 271–280
|
| [17] |
Najeeb U, Xu L, Ali S, Jilani G, Gong H J, Shen W Q, Zhou W J. Citric acid enhances the phytoextraction of manganese and plant growth by alleviating the ultrastructural damages in Juncus effusus L. Journal of Hazardous Materials, 2009, 170(2−3): 1156–1163
|
| [18] |
Yoon J, Cao X, Zhou Q, Ma L Q. Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site. Science of the Total Environment, 2006, 368(2−3): 456–464
|
| [19] |
Qian Y, Gallagher F J, Feng H, Wu M. A geochemical study of toxic metal translocation in an urban brownfield wetland. Environmental Pollution, 2012, 166: 23–30
|
| [20] |
Liu J G, Li G H, Shao W C, Xu J K, Wang D K. Variations in uptake and translocation of copper, chromium, and nickel among nineteen wetland plant species. Pedosphere, 2010, 20(1): 96–103
|
| [21] |
Liu J, Dong Y, Xu H, Wang D, Xu J. Accumulation of Cd, Pb and Zn by 19 wetland plant species in constructed wetland. Journal of Hazardous Materials, 2007, 147(3): 947–953
|
| [22] |
Amacher M C. Nickel, cadmium, and lead. In: Sparks D L, ed. Methods of soil analysis, part 3- chemical methods. Madison: Soil Science Society of America Inc. and American Society of Agronomy Inc., 1996, 739–768
|
| [23] |
Demirezen D, Aksoy A. Accumulation of heavy metals in Typha angustifolia (L.) and Potamogeton pectinatus (L.) living in Sultan Marsh (Kayseri, Turkey). Chemosphere, 2004, 56(7): 685–696
|
| [24] |
Allen S E. Analysis of vegetation and other organic materials. In: Allen S E, ed. Chemical Analysis of Ecological Materials. Oxford: Blackwell Scientific Publications, 1989, 46–61
|
| [25] |
Song Z W, Zheng Z P, Li J, Sun X F, Han X Y, Wang W, Xu M. Seasonal and annual performance of a full-scale constructed wetland system for sewage treatment in China. Ecological Engineering, 2006, 26(3): 272–282
|
| [26] |
Maine M A, Suñe N, Hadad H, Sánchez G, Bonetto C. Nutrient and metal removal in a constructed wetland for wastewater treatment from a metallurgic industry. Ecological Engineering, 2006, 26(4): 341–347
|
| [27] |
Maine M A, Suñe N, Hadad H, Sánchez G, Bonetto C. Phosphate and metal retention in a small-scale constructed wetland for waste-water treatment. In: Golterman, H L, Serrano L, eds. Phosphate in Sediments. Leiden: Backhuys Publishers, 2005, 21–31
|
| [28] |
Cheng S P, Grosse W, Karrenbrock F, Thoennessen M. Efficiency of constructed wetlands in decontamination of water polluted by heavy metals. Ecological Engineering, 2002, 18(3): 317–325
|
| [29] |
Ayaz S C, Akça L. Treatment of wastewater by natural systems. Environment International, 2001, 26(3): 189–195
|
| [30] |
Xue P Y, Li G X, Liu W J, Yan C Z. Copper uptake and translocation in a submerged aquatic plant Hydrilla verticillata (L.f.) Royle. Chemosphere, 2010, 81(9): 1098–1103
|
| [31] |
Zhang M Y, Cui L J, Sheng L X, Wang Y F. Distribution and enrichment of heavy metals among sediments, water body and plants in Hengshuihu Wetland of Northern China. Ecological Engineering, 2009, 35(4): 563–569
|
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