Fly ashes are usually contaminated with toxic heavy metals. These metals are leaching out aftercontact with water during wet disposal system, thus polluting the soil, surface and groundwater. In the present study, a hydroponics experiment was conducted to examine the removalof heavy metals Cd, Pb and Zn by Eichhornia crassipes grown at various concentration of fly ash ranging from 10, 20 and 40...

normal 0 false false false en-us x-none ar-sa background: cadmium and lead compounds are classified as human carcinogens by several regulatory agencies. twenty five percent of all cancer-related deaths are attributed to gastrointestinal cancers (gi ca). we investigated the levels of 2 different heavy metals (cd and pb) in the soils of the lenjanat region, isfahan province, central iran where in...

Generally, heavy metals enter into the aquatic environment through atmospheric deposition, erosion of geological matrix or due to anthropogenic activities caused by industrial effluents, domestic sewage and mining wastes. The present study analyzed the concentration of seven elements (Cd, Cu, Mn, Ni, Pb, Zi and Hg) in eight seaweeds such as Centrocerous clavutum, Sargassum wightii, Colpemenia s...

Many of mushrooms species from the forest area of Bucegi Mountains are consumed by the native population without thinking about the heavy metals uptake in the human body. From all the edible species we choose eight mushrooms, part of them considered edible and part with uncertain edibility. Heavy metals concentration in the fruiting body of mushrooms are different from one species to another an...

Background & objectives: Since many plants have high efficiency in absorbing heavy elements, the use of phytoremediation is of great importance. The purpose of this study is to identify native plants that absorb heavy metals. Also, the possibility of using them in phytoremediation technology in soils contaminated with heavy metals (around the petrochemical industry of Razi fertilizer in Tehran ...

Over the past century, unrestricted mining, extensive industrialization, modern agricultural practices and faulty waste disposal methods have resulted in the release of unprecedented levels of toxic heavy metals like Cd, Hg, Ag, Sn, Pb, Cu, Co, Mn, Zn, etc into the environment. Many metals are essential for microbial growth in less concentration, yet are toxic in higher concentrations. Biosorpt...

Heavy metal contamination of soils has become a serious problem in industrial or agricultural areas. Soils polluted with heavy metals pose a significant health risk to humans as well as plants and animals, often requiring soil remediation practices. Synthetic chelates such as ethylenediaminetetraacetic acid (EDTA) have been shown to enhance phytoextraction of some heavy metals from contaminated...

In recent years, environmental pollution by coal mining is a long-established human activity affecting all levels of life with various environmental impacts by generating heavy metals. The presence of heavy metals even in trace amount is toxic and detrimental to all living organisms. The coal mine area in Bokaro is one of the “Toxic Hotspot” in India. Bacteria have evolved uptake and efflux mec...

Phytoremediation is a site remediation strategy, which employs plants to remove non-volatile and immisible soil contents. This sustainable and inexpensive process is emerging as a viable alternative to traditional contaminated land remediation methods. To enhance phytoremediation as a viable strategy, fast growing plants with high metal uptake ability and rapid biomass gain are needed. This pap...