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Effect of Salinity on the Potential Cadmium Phytoremediation From the Polluted Soil by Carpobrotus Rossii Publisher



Miranzadeh MB1 ; Bashardoust P2, 3 ; Atoof F4 ; Rezvani Ghalhari M2, 3 ; Mostafaeii G1 ; Rabbani D1 ; Alimohammadi M2, 5, 6 ; Rahmani H1 ; Ghadami F1
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Student's Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Biostatistics & Epidemiology, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
  5. 5. Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Health Equity Research Center (HERC), Tehran University of Medical Sciences, Tehran, Iran

Source: Heliyon Published:2023


Abstract

Nowadays, toxic metals accumulation in soil texture due to anthropogenic activities is a major form of pollution, which can lead to worldwide concerns; however, there are many treatment methods to remove them from soil such as phytoremediation. The carpobrotus rossii, has shown great potential to tolerate high salinity and accumulate Cd from contaminated soils. The experiments, in this study, are analyzed and optimized by Central Composite Design (CCD) as method and using Response Surface Methodology (RSM) package in R software. The Cd removal by root and the whole plant followed the quadratic model and the R2 values were 94.95 and 94.81, respectively. The results showed that a decrease in NaCl concentration in Cd-containing solution can increase the phytoremediation process of Cd by carpobrotus rossii, significantly. The optimum conditions for 58% Cd removal by the whole plant, predicted through a CCD response surface methodology model were as follows: initial Cd concentration of 49 mgKg−1,NaCl concentration of 16 dSm−1, time of 17 days, and pH of 6.5. C. rossii's potential in removing 58% of Cd under the obtained optimum condition from the modelling was evaluated in real condition in the laboratory. The results revealed that around 56% of the initial added Cd concentration was removed by carpobrotus rossii. As a take home message, carpobrotus rossii can be recommended as an efficient plant to remove heavy metals especially cadmium from soil and sediments in arid area which have a salty soil. © 2023 The Authors