Bioreduction of selenite and tellurite by phanerochaete chrysosporium
著者
書誌事項
Bioreduction of selenite and tellurite by phanerochaete chrysosporium
（A Balkema book）
CRC Press/Balkema, c2016
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注記
Includes bibliographical references
内容説明・目次
内容説明
Selenium (Se) and tellurium (Te) are metalloids of commercial interest due to their physicochemical properties. The water soluble oxyanions of these elements (selenite, selenate, tellurite and tellurate) exhibit high toxicities; hence, their release in the environment is of great concern.
This study demonstrates the potential use of fungi as Se- and Te-reducing organisms. The response of Phanerochaete chrysosporium to the presence of selenite and tellurite was evaluated, as well as its potential application in wastewater treatment and production of nanoparticles. Growth stress and morphological changes were induced in P. chrysosoporium when exposed to selenite and tellurite. Synthesis of Se0 and Te0 nanoparticles entrapped in the fungal biomass was observed, as well as the formation of unique Se0-Te0 nanocomposites when the fungus was cultivated concurrently with Se and Te. The response of P. chrysosporium to selenite exposure was investigated in different modes of fungal growth (pellets and biofilm). A bioprocess for selenite removal and Se0 nanoparticles recovery using an up-flow fungal pelleted reactor was developed. 70% selenite removal (10 mg Se L-1 d-1) was achieved under continuous mode. The use of Se0 nanoparticles immobilized in P. chrysosporium pellets as a new sorbent material for the removal of heavy metals from wastewater was demonstrated.
目次
1. General introduction
2. Literature review
3. Effects of selenium oxyanions on the white-rot fungus P. chrysosporium
4. Removal of selenite from wastewater in a P. chrysosporium pellet based fungal bioreactor
5. Sorption of zinc onto elemental selenium nanoparticles immobilized in P. chrysosporium pellets
6. Morphological and inhibitory effects of selenite on biofilms of P. chrysosporium
7. Biomineralization of tellurium and selenium-tellurium nanoparticles by the P. chrysosporium
8. Mycotechnology for the treatment of Se and Te contaminated effluents and biomineralization of Se and Te nanoparticles
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