Phytoremediation and Adsorption of Heavy Industry Emitted from Cement Industry through Plant Leaves, Case Study: Golestan Peivand Cement Factory

Abstract

Cement factories are found to be one of the major causes of pollution. Cement mist and dusts depositions affect the photosynthesis, secretion and fertility of the plant. Increasing the concentration of airborne dust reduces photosynthetic potential in leaves, closes leaf stomatals and, in general, reduces the growth and fertility of plants. The purpose of this study is to determine the best tree species for absorbing contaminants from the cement plant. Data were analyzed using descriptive statistics and inferential statistics. To determine the normal distribution of metal content in oak, Paliurusspina-christi Phragmitesaustralis, Kolmogorov-Smirnov test was used and one-way analysis of variance was used to determine the difference. The results showed that F calculated for cadmium level (F = 4.123) with degrees of freedom df = 17 and df = 2 at 95% confidence level (α = 0.05) is greater than F from critical table (F = 3.59), therefore difference between cadmium and oak and Paliurusspina-christi and Phragmitesaustralis plants is statistically significant, but the means of other metals in oak and Paliurusspina-christiandPhragmitesaustralisis statistically equal. Also, the amount of cadmium with oak tree was significantly different (P-value = 0.049). It was found that the cadmium content of the Paliurusspina-christi was higher than the oak tree, in other words Paliurusspina-christicadmium others get better.