Introduction Bacteria may carry determinants of resistance to a number of heavy metals, including silver, bismuth, cadmium, cobalt, copper, mercury, lead, nickel, thallium or zinc cations and the oxyanions of arsenic, chromium, antimony, tellurium or tungsten. Such resistance determinants have been reviewed extensively [ 1-41. Bacterial resistance to heavy metals is conferred by specific resist...

The project concerns to adsorptive elimination of heavy metal ions from aqueous solution, namely to synthesis, modifying, studying of properties and to application combined biosorbents on the base of materials from agricultural by products. The main purpose is preparation of effective biosorbents for elimination of heavy metals ions from aqueous systems. The potential to remove metal ions from ...

Background: Water pollution is an important environmental problem, undoubtedly, the presence of toxic heavy metals forms the main source of water contamination. Sorption characteristics of polyurethane foams modified with bis (2-ethylhexyl)phosphoric acid (DEHPA) for the removal of zinc, lead and cadmium ions from contaminated solutions were investigated. Methods: Operating variables, such as ...

Concentrations of heavy metals (As, Co, Cu, Ni, Mo, Pb and Zn) are studied in the soil of Shiraz industrial complex zone, south Shiraz, Iran to asses metal contamination due to industrialization, urbanization and agricultural activity. Soil samples were collected from three different depths. The A and C depths are enriched with metals such as Ni, As, Mo, Cu, Pb and Zn, compared with the B depth...

The modern technologies of the adsorption processes are searching new, ecologically friendly adsorbents as natural polymers – chitin and chitosan. Chitin chitosan have high ability in relation to mineral oils, dyes, alcohols, phenols heavy metals. basic sources shells crustacean biomass fungus` mycelium. provides mechanical strength structure without rigid bonds between microfibrilles, that all...

Background & Aims of the Study: One of the most important pollutants in drinking water, air and soils is heavy metals. It is very harmful for humans and other live organisms. The purpose of this study was the usage of a co-composting process for removal of heavy metals from municipal solid waste and sewage sludge. Materials and Methods: This experimental study was a condu...

There is increasing interest in the stabilization of heavy metals in road-derived sediments (RDS), to enable environmentally responsible reuse applications and circumvent the need for costly landfill disposal. To reduce the mobility of heavy metals (i.e. Cu, Pb and Zn) the effectiveness of amendments using phosphate, compost and fly ash addition were investigated using batch leaching experiment...

To study the extent of removal of Cu(II) ions from the electroplating industrial effluent, metal resistant fungal strain of Penicillium janthinellum was selected for the present study. Response surface methodology was used to optimize the sorption process variables i.e. temperature (20-40 oC), biomass concentration (0.5-2.5 mg/l), pH (2.0-6.0) and initial concentration of metal ions (20-100 mg/...

The disposed wastes of zinc industries contain large amounts of heavy metals such as Pb2+ and Cd2+. These elements are considered as hazardous elements to human beings and other organisms. This study aims at introducing the fungal isolates that evolved to be compatible with waste deposits during the time and can absorb Pb2+ and Cd2+ions. During the spring and autumn in 2011, eight samples of se...