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Sewage sludge as an uncalled for product of wastewater treatment poses the challenge to society of disposing of it. Application of sewage sludge to agricultural land may be beneficial because it can improve the physical, chemical and biological properties of soils which may enhance crop growth. While, sewage sludge contains various heavy metals and it contains a wide variety of pathogens and can be infectious for different species of animals and plants as well as for humans. Consequently environmentally sound decisions need to be based on an integrative evaluation of contaminant sources and...

Heavy metals contamination of soil-water-plant ecosystems are one of the most important environmental and health problems throughout the world. Recent approaches to remediation of heavy metals include adsorption (dead microbial and renewable biomass), phytoaccumulation (plants), dendroremediation (growing trees) biostimutation, (stimulating living microbial population), rhizoremediation (plant and microbe), mycoremediation (stimulating living fungi/mycelial ultra-filtration), cyanoremediation (stimulating algal mass)and genoremediation (stimulating genes) for remediation process. The adequate...