Bioleaching is a proven bioprocess for metal recovery by solution from solid matrices, while a bioprecipitation or biomineralization approach is of potential for biorecovery from solution. Fungi can directly and indirectly mediate the formation of many kinds of minerals, including oxides, phosphates, carbonates and oxalates, as well as elemental forms of metals and metalloids such as Ag, Se and...

Genetic engineering of radiation-resistant organisms to recover radionuclides/heavy metals from radioactive wastes is an attractive proposition. We have constructed a Deinococcus radiodurans strain harboring phoN, a gene encoding a nonspecific acid phosphatase, obtained from a local isolate of Salmonella enterica serovar Typhi. The recombinant strain expressed an approximately 27-kDa active Pho...

The main objective of this study was to achieve the continuous biorecovery and bioreduction Pb(II) using an industrially obtained consortia as a biocatalyst. An upflow anaerobic sludge blanket reactor used in treatment process. bioremediation technique that applied made use yeast extract microbial substrate Pb(NO3)2 source Pb(II). UASB exhibited removal efficiencies between 90 100% for inlet Pb...

Heavy metal removal using genetically engineered organisms (GEOs) offer more cost and energy-efficient, safer, greener, environmentally-friendly opportunities as opposed to conventional strategies requiring hazardous or toxic chemicals, complex processes, high pressure/temperature. Additionally, GEOs exhibited superior potentials for biosynthesis of nanoparticles with significant capabilities i...