Phytoextraction of zinc contaminated water by Tagetes minuta L

Document Type: Research paper

Authors

1 Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad 22060, Pakistan

2 Faculty Member of Islamic Azad University, Joybar Branch, Iran

3 Department of Natural Resources Engineering, Aquaculture, Babol Branch, Islamic Azad University, Babol, Iran

Abstract

The heavy metals like zinc affect the aquatic and terrestrial environments in a number of ways which are currently well established. The practice of treating contaminated water and soil at low cost is continually gaining attention in developing countries. The phytoremediation technique is the most effective and low cost as compared to other technologies and also it is environment friendly. It is used to remove pollutants such as heavy metals from both water and soil. The experiment was based on two objectives i.e. to evaluate how marigold helps in phytoremediation of zinc from wastewater and secondly, to study the growth parameters under zinc metal stress. In this experiment, the marigold plant was used to remove zinc from synthetic wastewater at different concentrations (0, 100, 200, 300, and 400 µM). The experiment was done in different steps including plant collection, growth in a controlled environment, pre-analysis, post-analysis, drying, separation of parts, grinding digestion, filtration, and metal detection by using atomic absorption spectrophotometer. Zinc accumulation was checked by the detection of zinc metal in roots, shoots, and leaves of plants. Effects of zinc were analyzed by measurement of plant height, root length, and the number of leaves counting before and after zinc treatment and the result of zinc accumulation was obtained by atomic absorption spectrophotometer in each part of the plant. In roots zinc found in the range of (5.67 to 17.37) in stem (4.81 to 9.33) and in leaves (3.3 to 8.37) according to given treatments. This plant has zinc accumulation capacity and it is useful to treat zinc contaminated site.

Graphical Abstract

Phytoextraction of zinc contaminated water by Tagetes minuta L

Highlights

  • Heavy metals affect adversely the aquatic and terrestrial environments.
  • A phytoremediation is an approach used to detoxify contaminated areas.
  • The plant can be a useful material for remediation of heavy metals from contaminated sites.

Keywords

Main Subjects


Aleagha, M.M., Ebadi, A.G., 2011. Study of heavy metals bioaccumulation in the process of vermicomposting. Afr. J. Biotech., 10(36), 6997-7001.
Garbisu, C., Alkorta, I., 2001. Phytoextraction: a cost-effective plant-based technology for the removal of metals from the environment. Bioresour. Technol., 77(3), 229-236.
Ghosh, M., Singh, S.P., 2005. A review on phytoremediation of heavy metals and utilization of it’s by products. Asian. J. Energy. Environ., 6(4), 18.
Jadia, C.D., Fulekar, M.H., 2009. Phytoremediation of heavy metals: Recent techniques. Afr. J. biotechnol., 8(6), 312.
Lone, M.I., He, Z.L., Stoffella, P.J., Yang, X.E., 2008. Phytoremediation of heavy metal polluted soils and water: progresses and perspectives. J. Zhejiang. Univ. Sci., 9(3), 210-220.
 
Mirza, N., Mahmood, Q., Pervez, A., Ahmad, R., Farooq, R., Shah, M.M., Azim, M.R., 2010. Phytoremediation potential of Arundodonax in arsenic-contaminated synthetic wastewater. Bioresour. Technol., 101(15), 5815-5819.
Schwartz, C., Echevarria, G., Morel, J.L., 2003. Phytoextraction of cadmium with Thlaspicaerulescens. Plant. Soil., 249(1), 27-35.
Singh, O.V., Labana, S., Pandey, G., Budhiraja, R., Jain, R.K., 2003. Phytoremediation: an overview of metallic ion decontamination from soil. Appl. Microbiol. Biot., 61(5-6), 405-412.
Susarla, S., Medina, V.F., McCutcheon, S.C., 2002. Phytoremediation: an ecological solution to organic chemical contamination. Ecol. Eng., 18(5), 647-658.
Xiong, Y.H., Yang, X.E., Ye, Z.Q., He, Z.L., 2004. Characteristics of cadmium uptake and accumulation by two contrasting ecotypes of Sedum alfrediiHance. J. Environ. Sci. Health., 39(11-12), 2925-2940.
 
Yoon, J., Cao, X., Zhou, Q., Ma, L.Q., 2006. Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site. Sci. Total. Environ., 368(2), 456-464.
Zhang, B.Y., Zheng, J.S., Sharp, R.G., 2010. Phytoremediation in engineered wetlands: mechanisms and applications. Procedia. Environ.Sci., 2, 1315-1325.