Deposition of sediments on land in atmospheric conditions causes many risks connected with environmental protection. Particularly dangerous is leaching of heavy metals from sediments deposited on land The research aimed at assessment of leaching of heavy metals from dredged bottom sediments potentially disposed on land. In this research it has been shown that the leaching of heavy metals during...

There is growing interest in the recovery of pure palladium (Pd) compound from cemented Pd spent electroplating solutions due to increasing demand for Pd, and there considerable motivation develop an efficient process. In conventional methods leaching metal, HCl containing oxidizing agents are employed. this work, ethylene glycol (EG) replaced water as a diluent solution such H2O2, NaClO NaClO3...

Technology-oriented approaches to reduce chemical fertilization in agroecosystems without influencing the vegetable yield is a proficient method for sustainable agriculture and environmental safety. However, short-term studies are not capable indicate effects of various inputs long run; therefore, six-year experiment was conducted Ningxia, China. The experimental units were: no fertilizer contr...

The capacity of Acidithiobacillus thiooxidans DMS 11478 to recover the heavy metals contained in the residue obtained from the CARON process has been evaluated. Different bioreactor configurations were studied: a two-stage batch system and two semi-continuous systems (stirred-tank reactor leaching and column leaching). In the two-stage system, 46.8% Co, 36.0% Mg, 26.3% Mn and 22.3% Ni were solu...

A novel thermoacidophilic iron and sulfur-oxidizing archaeon, strain YN25, was isolated from an in situ enriched acid hot spring sample collected in Yunnan, China. Cells were irregular cocci, about 0.9-1.02 µm × 1.0-1.31 µm in the medium containing elemental sulfur and 1.5-2.22 µm × 1.8-2.54 µm in ferrous sulfate medium. The ranges of growth and pH were 50-85 (optimum 65) and pH 1.0-6.0 (optimu...